CN104065279A - Voltage disturbance generation device and method for simulating power grid disturbance - Google Patents
Voltage disturbance generation device and method for simulating power grid disturbance Download PDFInfo
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- CN104065279A CN104065279A CN201410289507.3A CN201410289507A CN104065279A CN 104065279 A CN104065279 A CN 104065279A CN 201410289507 A CN201410289507 A CN 201410289507A CN 104065279 A CN104065279 A CN 104065279A
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Abstract
The invention discloses a voltage disturbance generation device which comprises a three-phase rectifier module. The three-phase rectifier module is connected with a three-phase chopper voltage regulation module A, a three-phase chopper voltage regulation module B and a three-phase chopper voltage regulation module C through a DC LC filter. The three-phase chopper voltage regulation module A is connected with a full-bridge inversion module A through a three-phase DC LC filter A; the three-phase chopper voltage regulation module B is connected with a full-bridge inversion module B through a three-phase DC LC filter B; and the three-phase chopper voltage regulation module C is connected with a full-bridge inversion module C through a three-phase DC LC filter C. The full-bridge inversion module A, the full-bridge inversion module B and the full-bridge inversion module C respectively have two paths of output, wherein one paths of outputs are connected with the input end of a three-phase AC LC filter, and the other paths of outputs are mutually short circuited and are connected with the three-phase AC LC filter simultaneously. The problems that continuously-changing output voltage amplitude cannot be realized in a conventional voltage disturbance generation device, and the control difficulty is high are solved; and the voltage disturbance generation device is simple in structure and easily-controlled.
Description
Technical field
The invention belongs to computer application and electric and electronic technical field, the present invention relates to a kind of voltage disturbance generating means, the invention still further relates to the method that uses this voltage disturbance generating means simulating grid disturbance.
Background technology
In real world applications field, may there are various abnormal conditions in line voltage, and user side's instrument and equipment is caused to harmful effect, causes instrument and equipment irregular working or affect the quality of industrial products.Therefore, need can the various faults of simulating grid voltage equipment, fall temporarily at line voltage, rise temporarily and when phase place is undergone mutation, be used for checking the antijamming capability of industrial instrumentation and equipment self and the service behaviour of verifying voltage disturbance abatement equipment.
The general principle of voltage disturbance device is using power electronic equipment as voltage source, be connected between electrical network and load and equipment, simulating grid voltage swell, fall temporarily, the electric network fault such as phase place variation, for testing performance, the interference rejection ability of industrial equipment to voltage etc. of series compensation equipment.
On market, existing voltage disturbance device mainly contains following several:
(1) the voltage disturbance generating means based on series converter, this device comprises rectification side, DC side and inversion side, rectification side is connected in parallel on electrical network, for inversion side provides required meritorious energy; Inversion side is directly connected or is connected on electrical network by transformer, injects given voltage, with the various voltage operating modes of simulating grid to electrical network.This kind of structure is easy to electric pressure and the capacitance grade of lifting device, but because busbar voltage keeps constant, complete the change of output voltage amplitude by the modulation of modulation ratio, can not realize the continuous variation of output voltage amplitude, control precision is low, can not meet the needs of practical application.
(2) the multi-level concatenation power disturbance generating means based on voltage source converter, carries out rectification by three-phase controlled rectifier to three-phase alternating current, then exports the disturbance waveform of specifying by control inverter.This class device by multiple transformer rectifications after, by the required waveform of cascaded inverter stack output, circuit topological structure complexity, cost be high, very easily break down because cascaded inverter exists electric current commutation problem control difficulty height.
Summary of the invention
The object of the present invention is to provide a kind of voltage disturbance generating means, solved existing voltage disturbance generating means and can not realize output voltage amplitude variation and the high problem of control difficulty continuously.
Another object of the present invention is to provide the method that uses the disturbance of voltage disturbance generating means simulating grid.
The technical solution adopted in the present invention is: a kind of voltage disturbance generating means, comprise three phase rectifier module, the outlet side of three phase rectifier module is connected with the input of three-phase chopper control modules A, three-phase chopper control module B and three-phase chopper control module C respectively by direct current LC filter; The output of three-phase chopper control modules A is connected with the input side of full-bridge inverting modules A by three-phase dc LC filter A, the output of three-phase chopper control module B is connected with the input side of full-bridge inverting module B by three-phase dc LC filter B, and the output of three-phase chopper control module C is connected with the input side of full-bridge inverting module C by three-phase dc LC filter C; Full-bridge inverting modules A, full-bridge inverting module B, full-bridge inverting module C have two-way output, and a road output is connected with the input of three-phase alternating current LC filter respectively, and another road is exported mutual short circuit and is connected with three-phase alternating current LC filter simultaneously.
Feature of the present invention is also,
The input side of three phase rectifier module connects AC network.
The output of three-phase alternating current LC filter connects load, output voltage U, V, W, N.
The circuit of three-phase chopper control modules A comprises two series arms parallel with one another, series arm one is composed in series by copped wave capacitor C 2 and copped wave capacitor C 3, series arm two is composed in series by IGBT switching tube S1 and IGBT switching tube S2, node between node, copped wave capacitor C 2 and copped wave capacitor C 3 between IGBT switching tube S1 and IGBT switching tube S2 is the input of connection transformer T1 respectively, the output of transformer T1 connects full-bridge rectification diode Z2, and full-bridge rectification diode Z2 is connected with the input of three-phase dc LC filter A; Copped wave capacitor C 2 is also parallel with discharge resistance R1, and copped wave capacitor C 3 is parallel with discharge resistance R2;
The circuit of three-phase chopper control module B comprises two series arms parallel with one another, series arm one is composed in series by copped wave capacitor C 4 and copped wave capacitor C 5, series arm two is composed in series by IGBT switching tube S3 and IGBT switching tube S4, node between node, copped wave capacitor C 4 and copped wave capacitor C 5 between IGBT switching tube S3 and IGBT switching tube S4 is the input of connection transformer T2 respectively, the output of transformer T2 connects full-bridge rectification diode Z3, and full-bridge rectification diode Z3 is connected with the input of three-phase dc LC filter B; Copped wave capacitor C 4 is also parallel with discharge resistance R3, and copped wave capacitor C 5 is parallel with discharge resistance R4;
The circuit of three-phase chopper control module C comprises two series arms parallel with one another, series arm one is composed in series by copped wave capacitor C 6 and copped wave capacitor C 7, series arm two is composed in series by IGBT switching tube S5 and IGBT switching tube S6, node between node, copped wave capacitor C 6 and copped wave capacitor C 7 between IGBT switching tube S5 and IGBT switching tube S6 is the input of connection transformer T3 respectively, the output of transformer T3 connects full-bridge rectification diode Z4, and full-bridge rectification diode Z4 is connected with the input of described three-phase dc LC filter C; Copped wave capacitor C 6 is also parallel with discharge resistance R5, and copped wave capacitor C 7 is parallel with discharge resistance R6.
The circuit structure of full-bridge inverting modules A is composed in parallel by two series arms, and series arm one is composed in series by IGBT switching tube S7 and IGBT switching tube S9, and series arm two is composed in series by IGBT switching tube S8 and IGBT switching tube S10;
The circuit structure of full-bridge inverting module B is composed in parallel by two series arms, and series arm one is composed in series by IGBT switching tube S11 and IGBT switching tube S13, and series arm two is composed in series by IGBT switching tube S12 and IGBT switching tube S14;
The circuit structure of full-bridge inverting module C is composed in parallel by two series arms, and series arm one is composed in series by IGBT switching tube S15 and IGBT switching tube S17, and series arm two is composed in series by IGBT switching tube S16 and IGBT switching tube S18.
Node B 3 between Node B 2, IGBT switching tube S16 and IGBT switching tube S18 between Node B 1, IGBT switching tube S12 and IGBT switching tube S14 between IGBT switching tube S8 and IGBT switching tube S10 is connected with input D1, D2, the D3 of described three-phase alternating current LC filter respectively;
Node A2, IGBT switching tube S15 between node A1, IGBT switching tube S11 and IGBT switching tube S13 between IGBT switching tube S7 and IGBT switching tube S9 and the mutual short circuit of node A3 between IGBT switching tube S17 are also connected with the common port D4 in parallel of the capacitor C 11 of described three-phase alternating current LC filter, capacitor C 12, capacitor C 13 simultaneously.
Another technical scheme of the present invention is: the method that uses the disturbance of voltage disturbance generating means simulating grid: comprise the following steps:
The first step, select voltage disturbance type, set the relevant parameter of each phase voltage effective value and each phase voltage phase place;
Second step, starting resistor disturbing generating device, connect three-phase input AC electricity, and three phase rectifier module is direct current by the three-phase alternating current electric rectification of input, and by accessing subsequent conditioning circuit after direct current LC filter filtering;
The 3rd step, each phase voltage effective value parameter of setting according to the first step, by the control to three-phase chopper control modules A, three-phase chopper control module B and three-phase chopper control module C and three-phase dc LC filter A, three-phase dc LC filter B, the filter action of three-phase dc LC filter C to circuit, the tracking of realize target voltage;
Meanwhile, each phase voltage phase parameter of setting according to the first step, the output phase of adjustment full-bridge inverting modules A, full-bridge inverting module B, full-bridge inverting module C pulse width modulated wave SPWM, realizes phase control object;
While adjusting a certain parameter in the 4th step, system work process, the each control cycle of system detects primary voltage pre-set parameter, and does to control and adjust the variation that makes output tracking input; And the adjustment of each phase phase place output is after this SPWM output end cycle, system realizes according to the variation adjustment of phase parameter, realizes online adjustment process;
The 5th step, test job finish, first close the PWM ripple of three-phase chopper control modules A, three-phase chopper control module B and three-phase chopper control module C, then close the SPWM ripple of full-bridge inverting modules A, full-bridge inverting module B, full-bridge inverting module C, last parting system input voltage.
The invention has the beneficial effects as follows: a kind of voltage disturbance generating means of the present invention, by novel topological structure by voltage disturbance apparatus module, solve existing voltage disturbance generating means and can not realize output voltage amplitude variation and the high problem of control difficulty continuously, topological structure is simply clear, output disturbance waveform is comprehensively abundant, can simulating grid voltage dip, rise and the phase place fault such as undergo mutation temporarily, be used for checking the antijamming capability of industrial instrumentation and equipment self and the service behaviour of verifying voltage disturbance abatement equipment.
Brief description of the drawings
Fig. 1 is the schematic diagram of a kind of voltage disturbance generating means of the present invention.
In figure, 1. three phase rectifier module, 2. direct current LC filter, 3. three-phase chopper control modules A, 4. three-phase dc LC filter A, 5. full-bridge inverting modules A, 6. three-phase chopper control module B, 7. three-phase dc LC filter B, 8. full-bridge inverting module B, 9. three-phase chopper control module C, 10. three-phase dc LC filter C, 11. full-bridge inverting module C, 12. three-phase alternating current LC filters, 13. loads.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of voltage disturbance generating means of the present invention, as shown in Figure 1, comprise three phase rectifier module 1, the input side of three phase rectifier module 1 connects AC network, and the outlet side of three phase rectifier module 1 is connected with the input of three-phase chopper control modules A 3, three-phase chopper control module B6 and three-phase chopper control module C9 respectively by direct current LC filter 2; The output of three-phase chopper control modules A 3 is connected with the input side of full-bridge inverting modules A 5 by three-phase dc LC filter A4, the output of three-phase chopper control module B6 is connected with the input side of full-bridge inverting module B8 by three-phase dc LC filter B7, and the output of three-phase chopper control module C9 is connected with the input side of full-bridge inverting module C11 by three-phase dc LC filter C10; Full-bridge inverting modules A 5, full-bridge inverting module B8, full-bridge inverting module C11 have two-way output, one tunnel output is connected with the input of three-phase alternating current LC filter 12 respectively, another road is exported mutual short circuit and is connected with three-phase alternating current LC filter 12 simultaneously, the output of three-phase alternating current LC filter 12 connects load 13, output voltage U, V, W, N.
Wherein, the circuit of three-phase chopper control modules A 3 comprises two series arms parallel with one another, series arm one is composed in series by copped wave capacitor C 2 and copped wave capacitor C 3, series arm two is composed in series by IGBT switching tube S1 and IGBT switching tube S2, node between node, copped wave capacitor C 2 and copped wave capacitor C 3 between IGBT switching tube S1 and IGBT switching tube S2 is the input of connection transformer T1 respectively, the output of transformer T1 connects full-bridge rectification diode Z2, and full-bridge rectification diode Z2 is connected with the input of three-phase dc LC filter A4; Copped wave capacitor C 2 is also parallel with discharge resistance R1, and copped wave capacitor C 3 is parallel with discharge resistance R2;
The circuit of three-phase chopper control module B6 comprises two series arms parallel with one another, series arm one is composed in series by copped wave capacitor C 4 and copped wave capacitor C 5, series arm two is composed in series by IGBT switching tube S3 and IGBT switching tube S4, node between node, copped wave capacitor C 4 and copped wave capacitor C 5 between IGBT switching tube S3 and IGBT switching tube S4 is the input of connection transformer T2 respectively, the output of transformer T2 connects full-bridge rectification diode Z3, and full-bridge rectification diode Z3 is connected with the input of three-phase dc LC filter B7; Copped wave capacitor C 4 is also parallel with discharge resistance R3, and copped wave capacitor C 5 is parallel with discharge resistance R4;
The circuit of three-phase chopper control module C9 comprises two series arms parallel with one another, series arm one is composed in series by copped wave capacitor C 6 and copped wave capacitor C 7, series arm two is composed in series by IGBT switching tube S5 and IGBT switching tube S6, node between node, copped wave capacitor C 6 and copped wave capacitor C 7 between IGBT switching tube S5 and IGBT switching tube S6 is the input of connection transformer T3 respectively, the output of transformer T3 connects full-bridge rectification diode Z4, and full-bridge rectification diode Z4 is connected with the input of three-phase dc LC filter C10; Copped wave capacitor C 6 is also parallel with discharge resistance R5, and copped wave capacitor C 7 is parallel with discharge resistance R6.
The circuit structure of full-bridge inverting modules A 5 is H bridge construction, is composed in parallel by two series arms, and series arm one is composed in series by IGBT switching tube S7 and IGBT switching tube S9, and series arm two is composed in series by IGBT switching tube S8 and IGBT switching tube S10;
The circuit structure of full-bridge inverting module B8 is H bridge construction, is composed in parallel by two series arms, and series arm one is composed in series by IGBT switching tube S11 and IGBT switching tube S13, and series arm two is composed in series by IGBT switching tube S12 and IGBT switching tube S14;
The circuit structure of full-bridge inverting module C11 is H bridge construction, is composed in parallel by two series arms, and series arm one is composed in series by IGBT switching tube S15 and IGBT switching tube S17, and series arm two is composed in series by IGBT switching tube S16 and IGBT switching tube S18;
Node B 3 between Node B 2, IGBT switching tube S16 and IGBT switching tube S18 between Node B 1, IGBT switching tube S12 and IGBT switching tube S14 between IGBT switching tube S8 and IGBT switching tube S10 is connected with input D1, D2, the D3 of described three-phase alternating current LC filter (12) respectively;
Node A2, IGBT switching tube S15 between node A1, IGBT switching tube S11 and IGBT switching tube S13 between IGBT switching tube S7 and IGBT switching tube S9 and the mutual short circuit of node A3 between IGBT switching tube S17 are also connected with the common port D4 in parallel of the capacitor C 11 of described three-phase alternating current LC filter 12, capacitor C 12, capacitor C 13 simultaneously.
The method that uses the disturbance of voltage disturbance generating means simulating grid, comprises the following steps:
The first step, select voltage disturbance type, set the relevant parameter of each phase voltage effective value and each phase voltage phase place;
Second step, starting resistor disturbing generating device, connect three-phase input AC electricity, and three phase rectifier module 1 is direct current by the three-phase alternating current electric rectification of input, and by accessing subsequent conditioning circuit after 2 filtering of direct current LC filter;
The 3rd step, each phase voltage effective value parameter of setting according to the first step, by the control to three-phase chopper control modules A 3, three-phase chopper control module B6 and three-phase chopper control module C9 and three-phase dc LC filter A4, three-phase dc LC filter B7, the filter action of three-phase dc LC filter C10 to circuit, the tracking of realize target voltage;
Meanwhile, each phase voltage phase parameter of setting according to the first step, the output phase of adjustment full-bridge inverting modules A 5, full-bridge inverting module B8, full-bridge inverting module C11 pulse width modulated wave SPWM, realizes phase control object;
While adjusting a certain parameter in the 4th step, system work process, the each control cycle of system detects primary voltage pre-set parameter, and does to control and adjust the variation that makes output tracking input; And the adjustment of each phase phase place output is after this SPWM output end cycle, system realizes according to the variation adjustment of phase parameter, realizes online adjustment process;
The 5th step, test job finish, first close the PWM ripple of three-phase chopper control modules A 3, three-phase chopper control module B6 and three-phase chopper control module C9, then close the SPWM ripple of full-bridge inverting modules A 5, full-bridge inverting module B8, full-bridge inverting module C11, last parting system input voltage.
Three phase rectifier module 1 adopts three-phase not control rectifier system, input termination 380V industrial-frequency alternating current, and through direct current LC filter 2, (LC parameter is chosen as L:2mH to output; C:1000uF) after, be input to respectively in three groups of DC chopped-wave voltage-regulating circuit of three-phase chopper control modules A 3, three-phase chopper control module B6, three-phase chopper control module C9; Through three-phase dc LC filter A4, (LC parameter is chosen as L:1mH in the output of three-phase chopper control modules A 3; C:2000uF) after filtering, be input to the direct-flow input end of full-bridge inverting modules A 5, as the power supply of full-bridge inverting modules A 5; Through three-phase dc LC filter B7, (LC parameter is chosen as L:1mH in the output of three-phase chopper control module B6; C:2000uF) after filtering, be input to the direct-flow input end of full-bridge inverting module B8, as the power supply of full-bridge inverting module B8; Through three-phase dc LC filter C10, (LC parameter is chosen as L:1mH in the output of three-phase chopper control module C9; C:2000uF) after filtering, be input to the direct-flow input end of full-bridge inverting module C11, as the power supply of full-bridge inverting module C11.
Copped wave capacitor C 2, copped wave capacitor C 3, copped wave capacitor C 3, copped wave capacitor C 4, copped wave capacitor C 5, copped wave capacitor C 6, copped wave capacitor C 7 are 160uF, and the no-load voltage ratio of intermediate frequency transformer T1, intermediate frequency transformer T2, intermediate frequency transformer T3 is 1:2.7, and frequency is 4K.
Three-phase chopper control module major function is to regulate direct voltage, three-phase chopper control modules A 3 comprises by capacitor C 2, capacitor C 3 and IGBT switching device S1, the half-bridge circuit that IGBT switching device S2 forms, three-phase chopper control module B6 comprises by capacitor C 4, capacitor C 5 and IGBT switching device S3, the half-bridge circuit that IGBT switching device S4 forms, three-phase chopper control module C9 comprises by capacitor C 6, capacitor C 7 and IGBT switching device S5, the half-bridge circuit that IGBT switching device S6 forms, three groups of half-bridge circuits have independently control loop, output voltage can independent regulation, be independent of each other each other, intermediate frequency transformer T1, intermediate frequency transformer T2 and medium frequency electric depressor T3 play the effect of isolating and boosting, and realize the electrical isolation of output voltage, the SPWM working method of fixed modulation ratio that adopts full-bridge inverting output module A5, full-bridge inverting output module B8 and full-bridge inverting output module C11 realizes inversion output, exports three-phase four-wire system alternating voltage through three-phase alternating current LC filter 12.
In addition, realize the mutual phase place variation of three-phase voltage by changing SPWM output phase angle in three groups of full-bridge inverting modules, reach the object of phase angle disturbance.
The grid disturbance type that this device can be simulated comprises:
A) three-phase symmetrical falls temporarily, rises temporarily and interrupt and (falls temporarily: 0～100%UN, rises: 100～140%UN) temporarily;
B) two-phase is asymmetricly fallen temporarily, is risen temporarily (phase invariant) and (falls temporarily: 0～100%UN, rises: 100～140%UN) temporarily;
C) two-phase is asymmetricly fallen temporarily, is risen temporarily (SPA sudden phase anomalies: can set for 0～360 °) and (falls temporarily: 0～100%UN, rises: 100～140%UN) temporarily;
D) single-phase in three-phase operation asymmetricly fall temporarily, rise temporarily (fall temporarily: 0～100%UN, rises: 100～140%UN) temporarily;
E) three independent falling temporarily with rising temporarily of single-phase while (are fallen: 0～100%UN, rises: 100～140%UN) temporarily temporarily.
A kind of voltage disturbance generating means of the present invention, pass through proposed novel topological structure, realize power disturbance apparatus module, semi-bridge alternation circuit design has realized electrical isolation, circuit control is simple, clear, can realize the voltage disturbance output of any type, the use that Modular Structure Design is convenient to system maintenance, high-frequency chopper has improved efficiency and the power density of system.
Embodiment
The first step, selection voltage disturbance type: simulation three-phase symmetrical falls temporarily, rises temporarily and interrupt and (falls temporarily: 0～100%UN, rises: 100～140%UN) temporarily; Set the relevant parameter of each phase voltage effective value and each phase voltage phase place: A phase voltage output effective value is that 220V, A phase voltage output phase 0 are spent; B phase voltage output effective value is that 110V, B phase voltage output phase 120 are spent; C phase voltage output effective value is that 300V, C phase voltage output phase 240 are spent;
Second step, starting resistor disturbing generating device, connect three-phase input AC electricity, and three phase rectifier module 1 is direct current by the three-phase alternating current electric rectification of input, and by accessing subsequent conditioning circuit after 2 filtering of direct current LC filter;
The 3rd step, each phase voltage effective value parameter of setting according to the first step, by the control to three-phase chopper control modules A 3, three-phase chopper control module B6 and three-phase chopper control module C9 and three-phase dc LC filter A4, three-phase dc LC filter B7, the filter action of three-phase dc LC filter C10 to circuit, the tracking of realize target voltage;
Meanwhile, each phase voltage phase parameter of setting according to the first step, the output phase of adjustment full-bridge inverting modules A 5, full-bridge inverting module B8, full-bridge inverting module C11 pulse width modulated wave SPWM, realizes phase control object;
While adjusting a certain parameter in the 4th step, system work process, as: former A phase voltage output effective value is 220V, is now revised as 0V, and the each control cycle of system detects primary voltage pre-set parameter, and does to control and adjust the variation that makes output tracking input; And the adjustment of each phase phase place output is after this SPWM output end cycle (each SPWM output cycle is 20mS), system realizes according to the variation adjustment of phase parameter, realizes online adjustment process;
The 5th step, test job finish, first close the PWM ripple of three-phase chopper control modules A 3, three-phase chopper control module B6 and three-phase chopper control module C9, then close the SPWM ripple of full-bridge inverting modules A 5, full-bridge inverting module B8, full-bridge inverting module C11, last parting system input voltage.
Claims (7)
1. a voltage disturbance generating means, it is characterized in that, comprise three phase rectifier module (1), the outlet side of described three phase rectifier module (1) is connected with the input of three-phase chopper control modules A (3), three-phase chopper control module B (6) and three-phase chopper control module C (9) respectively by direct current LC filter (2); The output of described three-phase chopper control modules A (3) is connected with the input side of full-bridge inverting modules A (5) by three-phase dc LC filter A (4), the output of described three-phase chopper control module B (6) is connected with the input side of full-bridge inverting module B (8) by three-phase dc LC filter B (7), and the output of described three-phase chopper control module C (9) is connected with the input side of full-bridge inverting module C (11) by three-phase dc LC filter C (10); Described full-bridge inverting modules A (5), full-bridge inverting module B (8), full-bridge inverting module C (11) have two-way output, one tunnel output is connected with the input of three-phase alternating current LC filter (12) respectively, and another road is exported mutual short circuit and is connected with three-phase alternating current LC filter (12) simultaneously.
2. a kind of voltage disturbance generating means as claimed in claim 1, is characterized in that, the input side of described three phase rectifier module (1) connects AC network.
3. a kind of voltage disturbance generating means as claimed in claim 1, is characterized in that, the output of described three-phase alternating current LC filter (12) connects load (13), output voltage U, V, W, N.
4. a kind of voltage disturbance generating means as claimed in claim 1, it is characterized in that, the circuit of described three-phase chopper control modules A (3) comprises two series arms parallel with one another, series arm one is composed in series by copped wave capacitor C 2 and copped wave capacitor C 3, series arm two is composed in series by IGBT switching tube S1 and IGBT switching tube S2, node between described IGBT switching tube S1 and IGBT switching tube S2, node between copped wave capacitor C 2 and copped wave capacitor C 3 is the input of connection transformer T1 respectively, the output of transformer T1 connects full-bridge rectification diode Z2, described full-bridge rectification diode Z2 is connected with the input of described three-phase dc LC filter A (4), described copped wave capacitor C 2 is also parallel with discharge resistance R1, and copped wave capacitor C 3 is parallel with discharge resistance R2,
The circuit of described three-phase chopper control module B (6) comprises two series arms parallel with one another, series arm one is composed in series by copped wave capacitor C 4 and copped wave capacitor C 5, series arm two is composed in series by IGBT switching tube S3 and IGBT switching tube S4, node between described IGBT switching tube S3 and IGBT switching tube S4, node between copped wave capacitor C 4 and copped wave capacitor C 5 is the input of connection transformer T2 respectively, the output of transformer T2 connects full-bridge rectification diode Z3, described full-bridge rectification diode Z3 is connected with the input of described three-phase dc LC filter B (7), described copped wave capacitor C 4 is also parallel with discharge resistance R3, and copped wave capacitor C 5 is parallel with discharge resistance R4,
The circuit of described three-phase chopper control module C (9) comprises two series arms parallel with one another, series arm one is composed in series by copped wave capacitor C 6 and copped wave capacitor C 7, series arm two is composed in series by IGBT switching tube S5 and IGBT switching tube S6, node between described IGBT switching tube S5 and IGBT switching tube S6, node between copped wave capacitor C 6 and copped wave capacitor C 7 is the input of connection transformer T3 respectively, the output of transformer T3 connects full-bridge rectification diode Z4, described full-bridge rectification diode Z4 is connected with the input of described three-phase dc LC filter C (10), described copped wave capacitor C 6 is also parallel with discharge resistance R5, and copped wave capacitor C 7 is parallel with discharge resistance R6.
5. a kind of voltage disturbance generating means as claimed in claim 1, it is characterized in that, the circuit structure of described full-bridge inverting modules A (5) is composed in parallel by two series arms, series arm one is composed in series by IGBT switching tube S7 and IGBT switching tube S9, and series arm two is composed in series by IGBT switching tube S8 and IGBT switching tube S10;
The circuit structure of full-bridge inverting module B (8) is composed in parallel by two series arms, and series arm one is composed in series by IGBT switching tube S11 and IGBT switching tube S13, and series arm two is composed in series by IGBT switching tube S12 and IGBT switching tube S14;
The circuit structure of full-bridge inverting module C (11) is composed in parallel by two series arms, and series arm one is composed in series by IGBT switching tube S15 and IGBT switching tube S17, and series arm two is composed in series by IGBT switching tube S16 and IGBT switching tube S18.
6. a kind of voltage disturbance generating means as claimed in claim 5, it is characterized in that, the Node B 3 between Node B 2, IGBT switching tube S16 and IGBT switching tube S18 between Node B 1, IGBT switching tube S12 and IGBT switching tube S14 between described IGBT switching tube S8 and IGBT switching tube S10 is connected with input D1, D2, the D3 of described three-phase alternating current LC filter (12) respectively;
Node A2, IGBT switching tube S15 between node A1, IGBT switching tube S11 and IGBT switching tube S13 between described IGBT switching tube S7 and IGBT switching tube S9 and the mutual short circuit of node A3 between IGBT switching tube S17 are also connected with the common port D4 in parallel of the capacitor C 11 of described three-phase alternating current LC filter (12), capacitor C 12, capacitor C 13 simultaneously.
7. use the method for voltage disturbance generating means simulating grid disturbance as claimed in claim 1, it is characterized in that, comprise the following steps:
The first step, select voltage disturbance type, set the relevant parameter of each phase voltage effective value and each phase voltage phase place;
Second step, starting resistor disturbing generating device, connect three-phase input AC electricity, and three phase rectifier module (1) is direct current by the three-phase alternating current electric rectification of input, and by accessing subsequent conditioning circuit after direct current LC filter (2) filtering;
The 3rd step, each phase voltage effective value parameter of setting according to the first step, by the control to three-phase chopper control modules A (3), three-phase chopper control module B (6) and three-phase chopper control module C (9) and three-phase dc LC filter A (4), three-phase dc LC filter B (7), the filter action of three-phase dc LC filter C (10) to circuit, the tracking of realize target voltage;
Meanwhile, each phase voltage phase parameter of setting according to the first step, adjust the output phase of full-bridge inverting modules A (5), full-bridge inverting module B (8), full-bridge inverting module C (11) pulse width modulated wave SPWM, realize phase control object;
While adjusting a certain parameter in the 4th step, system work process, the each control cycle of system detects primary voltage pre-set parameter, and does to control and adjust the variation that makes output tracking input; And the adjustment of each phase phase place output is after this SPWM output end cycle, system realizes according to the variation adjustment of phase parameter, realizes online adjustment process;
The 5th step, test job finish, first close the PWM ripple of three-phase chopper control modules A (3), three-phase chopper control module B (6) and three-phase chopper control module C (9), then close the SPWM ripple of full-bridge inverting modules A (5), full-bridge inverting module B (8), full-bridge inverting module C (11), last parting system input voltage.
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| CN105510747A (en) * | 2015-12-25 | 2016-04-20 | 国网安徽省电力公司 | Voltage fluctuation simulating method |
| CN107884652A (en) * | 2017-11-30 | 2018-04-06 | 合肥科威尔电源系统有限公司 | A kind of high-pressure type direct current feed-back type electronic load control system |
| CN107947598A (en) * | 2017-11-23 | 2018-04-20 | 中国电力科学研究院 | A kind of high-frequency isolation grid disturbance device |
| CN108377100A (en) * | 2018-04-24 | 2018-08-07 | 电王精密电器(北京)有限公司 | A kind of high-power sine wave AC Switching Power Supply |
| CN108859790A (en) * | 2017-05-15 | 2018-11-23 | 华东交通大学 | A kind of novel traction transmission system main circuit |
| CN109120013A (en) * | 2018-10-24 | 2019-01-01 | 云南电网有限责任公司电力科学研究院 | A kind of method and device for grid adaptability detection device injection disturbance quantity |
| CN110907740A (en) * | 2019-12-12 | 2020-03-24 | 云南电网有限责任公司临沧供电局 | Automatic commutation equipment detection device and method based on PWM converter |
| CN113364041A (en) * | 2021-08-09 | 2021-09-07 | 四川大学 | Electric power disturbance simulation analysis and control system |
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| CN113364041A (en) * | 2021-08-09 | 2021-09-07 | 四川大学 | Electric power disturbance simulation analysis and control system |
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