CN203071576U - Multi-voltage level harmonic disturbance source generation system - Google Patents
Multi-voltage level harmonic disturbance source generation system Download PDFInfo
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- CN203071576U CN203071576U CN2012206516994U CN201220651699U CN203071576U CN 203071576 U CN203071576 U CN 203071576U CN 2012206516994 U CN2012206516994 U CN 2012206516994U CN 201220651699 U CN201220651699 U CN 201220651699U CN 203071576 U CN203071576 U CN 203071576U
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- 230000001276 controlling effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model provides a multi-voltage level harmonic disturbance source generation system. The interface device is connected in series with circuit breakers in serial connection on a power grid bus; the input end of a power quality disturbance generator is connected onto the power grid bus between the circuit breakers via a contactor; the output end of the power quality disturbance generator is provided with two output branches, each output branch is respectively connected with the interface device and the input ends of the transformer, and the contactors are connected in series onto the output branches respectively; and the output end of the transformer is provided with two output branches, and the output branches are connected with a test power bus. Compared with the prior art, the harmonic disturbance source generation system provided by the utility model can output three standard harmonic sources which have the harmonic times of 0 to 50, voltages/capacities of 10KV/2Mvar, 0.38KV/500Kvar and 0.69KV/500Kvar, and the maximum total distortion rate of less than 20%.
Description
Technical field
The utility model relates to a kind of mains by harmonics disturbing source generation systems, specifically relates to a kind of multi-voltage grade harmonic disturbance source generation systems.
Background technology
Along with the extensive use of power electronic technology in electric equipment and the continuous increase of nonlinear-load, the harmonic problem in the electrical network is serious day by day, seriously jeopardizes the safe and stable operation of electrical network and power consumption equipment itself.Therefore, the analysis and synthesis of harmonic problem is administered the hot research field that has become domestic and international extensive concern.Development along with power electronic device and relevant control technology, the development of power quality controlling equipment is very rapid, application in industry also more and more widely, more common Active Power Filter-APF (the active power filter that comprises, APF), STATCOM (static synchronous compensator, STATCOM), Static Var Compensator (static var compensator, SVC), dynamic electric voltage recovery device (dynamic voltagerestorer, DVR) and uninterrupted power supply (uninterruptible power supply, UPS) etc.Need verify that to quality of power supply control device it suppresses the validity of humorous wave energy, and when carrying out quality of power supply research, need correctness and the effect of verification power quality analysis theory.
Application number is that 200810020372.5 patent of invention " energy feeding type electrical energy mass perturbance device " is that a kind of PWM of utilization commutation technique is realized the Measurement of Harmonics in Power System controlling device that inversion refluxes, comprise harmonic source, feedback link, intermediate dc electric capacity, control terminal and LCL filtering link, the output harmonic wave current source, simple in structure, the harmonic source the regulated scope of output is little.
Application number is that 200820220473.2 utility model patent " mains by harmonics disturbing source recognition system " is a kind of collection analysis processing unit at the harmonic disturbance source, solved in-service monitoring identification and handled the problem in harmonic disturbance source, but the problem that how not to produce at the harmonic disturbance source is analyzed.Hence one can see that, develops a kind ofly to export controlled standard harmonic disturbing source generating means and seem very necessary.
Summary of the invention
In order to satisfy the needs of prior art, the utility model provides a kind of multi-voltage grade harmonic disturbance source generation systems, and the design performance of power quality controlling equipment is carried out check analysis, for platform is set up in test, analysis, the assessment of power quality controlling equipment.
A kind of harmonic disturbance source generation systems that the utility model provides comprises electrical energy power quality disturbance generator, circuit breaker, contactor, interface arrangement, power generating facilities and power grids bus and testing power supply bus; Described contactor number is three; Described interface arrangement with connect after described circuit breaker be connected on the described power generating facilities and power grids bus; Described electrical energy power quality disturbance generator input is connected on the described power generating facilities and power grids bus between the described circuit breaker by described contactor; Described electrical energy power quality disturbance generator output end has two output branch lines, and described output branch line links to each other with the transformer input with described interface arrangement respectively, is connected in series described contactor respectively on the described output branch line; Described transformer output has two output branch lines, and described output branch line links to each other with described testing power supply bus; Described electrical energy power quality disturbance generator capacity is 500KVA.
Preferably, described transformer is the 2KV/0.69KV step-down transformer, and described circuit breaker number is two.
Preferably, described power generating facilities and power grids bus is 10KV power generating facilities and power grids buses; The described 10KV power generating facilities and power grids bus of described interface arrangement outlet side links to each other with 10KV testing power supply bus, and described transformer output branch line links to each other with 0.38KV testing power supply bus with 0.69KV respectively.
Preferably, described electrical energy power quality disturbance generator comprises transformer and the rectifier that is connected in series and the inverter that former limit winding and secondary winding link to each other with rectifier with described contactor respectively.
Preferably, the described transformer of described electrical energy power quality disturbance generator is the single-phase many winding input isolating transformers of 10kV/0.5kV; The former limit of described transformer winding is star-like or triangle connects winding, and described transformer secondary winding is three phase windings, and described transformer rated capacity is 200kVA.
Preferably, described rectifier is three single-phase full control PWM rectifiers of low pressure; Described inverter is three single-phase full control PWM inverters of low pressure.
Preferably, the single-phase full control PWM rectifier input of described low pressure links to each other with the single-phase winding of single-phase many winding input isolating transformer secondary windings respectively.
Preferably, the single-phase full control PWM rectifier output end of the described low pressure single-phase full control PWM inverter of described low pressure of connecting respectively; Shunt capacitance between the input and output side that the single-phase full control PWM inverter of the single-phase full control PWM rectifier of described low pressure and described low pressure is connected in series, described electric capacity is used for the direct voltage voltage stabilizing to the output of the single-phase full control PWM rectifier of described low pressure.
Preferably, it is characterized in that, the single-phase full control PWM inverter output end of described first low pressure links to each other with the single-phase full control PWM inverter input of described second low pressure, the single-phase full control PWM inverter output end of described second low pressure links to each other with the single-phase full control PWM inverter input of described the 3rd low pressure, be connected in parallel on the electric capacity two ends with the single-phase full control PWM inverter output end of described the 3rd low pressure after the single-phase full control PWM inverter input of described first low pressure is connected with inductance, described inductance and described electric capacity are used for the filtering high-frequency ripple.
The beneficial effects of the utility model are:
1, the harmonic disturbance source generation systems that provides of the utility model can the output harmonic wave number of times be 0～50, voltage/capacity is 10KV/2Mvar, 0.38KV/500Kvar and 0.69KV/500Kvar, maximum resultant distortion rate is less than three kinds of standard harmonic sources of 20%, adjustable output voltage harmonic wave wide ranges;
2, in the technical solution of the utility model, the single-phase full control PWM rectifier of low pressure links to each other with single-phase input isolating transformer secondary winding, and three single-phase full control PWM inverters adopt the cascade structure, output 1KV high pressure, improved the functional reliability of harmonic disturbance source generation systems, design concept advanced person;
3, in the technical solution of the utility model, the filter capacitor in the electrical energy power quality disturbance generator and inductance are formed LC filtering output loop, can filtering switch time high frequency ripple;
4, in the technical solution of the utility model, the single-phase full control PWM inverter of the single-phase full control PWM rectifier of low pressure and low pressure adopts all-controlling power electronics device IGBT, and control mode is flexible, makes the output of electrical energy power quality disturbance generator can realize continuously adjustable;
5, in the technical solution of the utility model, the electrical energy power quality disturbance generator adopts the modularization drawer type structure, when guaranteeing that system breaks down, can change power cell simply fast;
6, in the technical solution of the utility model, the electrical energy power quality disturbance generator comprises three PWM that connected and composed by the single-phase full control PWM rectifier of low pressure and the single-phase full control PWM inverter of low pressure power cell back-to-back, guarantees that system is in the safety operation area all the time when electron electric power device IGBT bears direct voltage in running.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 shows multi-voltage grade harmonic disturbance source generation systems structure chart.
Fig. 2 shows electrical energy power quality disturbance generator architecture figure.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described.
Show multi-voltage grade harmonic disturbance source generation systems structural representation referring to Fig. 1, comprising: electrical energy power quality disturbance generator, interface arrangement and 2KV/0.69KV step-down transformer, circuit breaker Q F1, QF2, high voltage connector KM1, KM2 and KM3.
The work connected mode that described multi-voltage grade harmonic disturbance source generation systems is respectively formed components and parts is:
Described circuit breaker Q F1, QF2 and described interface arrangement are connected on the 10KV power generating facilities and power grids bus successively, and described circuit breaker Q F2 is used for the switch busbar voltage, and 10KV testing power supply bus links to each other with the 10KV power generating facilities and power grids bus of described interface arrangement outlet side; Described electrical energy power quality disturbance generator input is connected on the 10KV power generating facilities and power grids bus between described two circuit breakers by described high voltage connector KM1; Described electrical energy power quality disturbance generator output end has two output branch lines, one on described output branch line passes through described high voltage connector KM2 and links to each other with described interface arrangement, another links to each other described output branch line with described 2KV/0.69KV step-down transformer input by described high voltage connector KM3, and described 2KV/0.69KV step-down transformer output inserts 0.69KV testing power supply bus and 0.38KV testing power supply bus respectively.
A kind of multi-voltage grade harmonic disturbance source generation systems output 10KV/2Mvar, 0.69KV/500var that the application provides and the specific implementation process of three kinds of standard harmonic disturbing sources of 0.38KV/500var are as follows:
1, as circuit breaker Q F1, QF2, high voltage connector KM1, KM2 closure, when KM3 disconnects, the 10KV power generating facilities and power grids insert 10KV testing power supply bus by KM1, electrical energy power quality disturbance generator and KM2,2KV/0.69KV step-down transformer is not worked, and realizes the voltage disturbance function in 10KV 2Mvar harmonic disturbance source;
2, as circuit breaker Q F1, high voltage connector KM1, KM3 closure, when QF2, KM2 disconnect, the 10KV power generating facilities and power grids insert 0.69KV testing power supply bus by KM1, electrical energy power quality disturbance generator, KM3 and 2KV/0.69KV step-down transformer, realize the voltage disturbance function in 0.69KV/500var harmonic disturbance source;
3, as circuit breaker Q F1, high voltage connector KM1, KM3 closure, when QF2, KM2 disconnect, the 10KV power generating facilities and power grids insert 0.38KV testing power supply bus by KM1, electrical energy power quality disturbance generator, KM3 and 2KV/0.69KV step-down transformer, regulate the output voltage of electrical energy power quality disturbance generator simultaneously, realize the voltage disturbance function in 0.38KV/500var harmonic disturbance source.
Show electrical energy power quality disturbance generator architecture schematic diagram referring to Fig. 2, comprise the single-phase many winding input isolating transformers of the single-phase many winding input isolating transformers of 10kV/0.5kV, three single-phase full control PWM rectifiers of low pressure, three the single-phase full control PWM inverters of low pressure, DC voltage-stabilizing capacitor C D, filter inductance L and filter capacitor C;
Described electrical energy power quality disturbance generator input is the former limits of described single-phase many winding input isolating transformers; Described transformer secondary has three phase windings, described single-phase winding links to each other with a single-phase full control PWM rectifier of described low pressure, described capacitor C D in parallel between the input and output side that the single-phase full control PWM inverter of the single-phase full control PWM rectifier of described low pressure and low pressure is connected in series, described electric capacity is used for the direct voltage voltage stabilizing to the output of the single-phase full control PWM rectifier of described low pressure.
The single-phase full control PWM inverter of described low pressure adopts cascade structure to connect, and concrete connected mode is:
The single-phase full control PWM inverter output end of described first low pressure links to each other with the single-phase full control PWM inverter input of described second low pressure, the single-phase full control PWM inverter output end of described second low pressure links to each other with the single-phase full control PWM inverter input of described the 3rd low pressure, be connected in parallel on the capacitor C two ends with the single-phase full control PWM inverter output end of described the 3rd low pressure after the single-phase full control PWM inverter input of described first low pressure is connected with inductance, described capacitor C output is as the output of electrical energy power quality disturbance generator.
Should be noted that at last: described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the application's protection.
Claims (9)
1. harmonic disturbance source generation systems, described system comprises electrical energy power quality disturbance generator, circuit breaker, contactor, interface arrangement, power generating facilities and power grids bus and testing power supply bus, it is characterized in that, described contactor number is three; Described interface arrangement with connect after described circuit breaker be connected on the described power generating facilities and power grids bus; Described electrical energy power quality disturbance generator input is connected on the described power generating facilities and power grids bus between the described circuit breaker by described contactor; Described electrical energy power quality disturbance generator output end has two output branch lines, and described output branch line links to each other with the transformer input with described interface arrangement respectively, is connected in series described contactor respectively on the described output branch line; Described transformer output has two output branch lines, and described output branch line links to each other with described testing power supply bus; Described electrical energy power quality disturbance generator capacity is 500KVA.
2. a kind of harmonic disturbance as claimed in claim 1 source generation systems is characterized in that described transformer is the 2KV/0.69KV step-down transformer, and described circuit breaker number is two.
3. a kind of harmonic disturbance as claimed in claim 1 source generation systems is characterized in that described power generating facilities and power grids bus is 10KV power generating facilities and power grids buses; The described 10KV power generating facilities and power grids bus of described interface arrangement outlet side links to each other with 10KV testing power supply bus, and described transformer output branch line links to each other with 0.38KV testing power supply bus with 0.69KV respectively.
4. a kind of harmonic disturbance as claimed in claim 1 source generation systems, it is characterized in that described electrical energy power quality disturbance generator comprises transformer and the rectifier that is connected in series and the inverter that former limit winding and secondary winding link to each other with rectifier with described contactor respectively.
5. a kind of harmonic disturbance as claimed in claim 4 source generation systems is characterized in that, the described transformer of described electrical energy power quality disturbance generator is the single-phase many windings input isolating transformers of the single-phase many windings input isolating transformers of 10kV/0.5kV; The former limit of described transformer winding is star-like or triangle connects winding, and described transformer secondary winding is three phase windings, and described transformer rated capacity is 200kVA.
6. a kind of harmonic disturbance as claimed in claim 4 source generation systems is characterized in that described rectifier is three single-phase full control PWM rectifiers of low pressure; Described inverter is three single-phase full control PWM inverters of low pressure.
7. a kind of harmonic disturbance as claimed in claim 6 source generation systems is characterized in that, the single-phase full control PWM rectifier input of described low pressure links to each other with the single-phase winding of single-phase many windings input isolating transformer secondary windings respectively.
8. a kind of harmonic disturbance as claimed in claim 6 source generation systems is characterized in that, the single-phase full control PWM rectifier output end of the described low pressure single-phase full control PWM inverter of described low pressure of connecting respectively; Shunt capacitance between the input and output side that the single-phase full control PWM inverter of the single-phase full control PWM rectifier of described low pressure and described low pressure is connected in series, described electric capacity is used for the direct voltage voltage stabilizing to the output of the single-phase full control PWM rectifier of described low pressure.
9. a kind of harmonic disturbance as claimed in claim 6 source generation systems, it is characterized in that, the single-phase full control PWM inverter output end of described first low pressure links to each other with the single-phase full control PWM inverter input of described second low pressure, the single-phase full control PWM inverter output end of described second low pressure links to each other with the single-phase full control PWM inverter input of described the 3rd low pressure, be connected in parallel on the electric capacity two ends with the single-phase full control PWM inverter output end of described the 3rd low pressure after the single-phase full control PWM inverter input of described first low pressure is connected with inductance, described inductance and described electric capacity are used for the filtering high-frequency ripple.
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| CN2012206516994U CN203071576U (en) | 2012-11-30 | 2012-11-30 | Multi-voltage level harmonic disturbance source generation system |
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| CN2012206516994U CN203071576U (en) | 2012-11-30 | 2012-11-30 | Multi-voltage level harmonic disturbance source generation system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034982A (en) * | 2014-06-19 | 2014-09-10 | 国家电网公司 | Electric energy quality harmonic disturbance source platform |
| CN104698306A (en) * | 2013-12-06 | 2015-06-10 | 国家电网公司 | Custom power equipment detection circuit and equipment |
| CN105866629A (en) * | 2016-04-25 | 2016-08-17 | 云南电力试验研究院(集团)有限公司 | Multifunctional electric energy quality pollution source device |
| CN105866585A (en) * | 2016-04-20 | 2016-08-17 | 国网福建省电力有限公司 | Method for harmonic source identification and liability sharing based on distortion power |
| CN109861551A (en) * | 2018-12-06 | 2019-06-07 | 国电南瑞科技股份有限公司 | A kind of rail traffic direct hanging type modularization three-phase turns single phase power supply system |
| CN114050728A (en) * | 2021-12-03 | 2022-02-15 | 日新电机（无锡）有限公司 | Power supply device for converting single phase into three phase |
-
2012
- 2012-11-30 CN CN2012206516994U patent/CN203071576U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698306A (en) * | 2013-12-06 | 2015-06-10 | 国家电网公司 | Custom power equipment detection circuit and equipment |
| CN104698306B (en) * | 2013-12-06 | 2017-09-12 | 国家电网公司 | Custom power equipment detects circuit and equipment |
| CN104034982A (en) * | 2014-06-19 | 2014-09-10 | 国家电网公司 | Electric energy quality harmonic disturbance source platform |
| CN105866585A (en) * | 2016-04-20 | 2016-08-17 | 国网福建省电力有限公司 | Method for harmonic source identification and liability sharing based on distortion power |
| CN105866629A (en) * | 2016-04-25 | 2016-08-17 | 云南电力试验研究院(集团)有限公司 | Multifunctional electric energy quality pollution source device |
| CN105866629B (en) * | 2016-04-25 | 2018-10-30 | 云南电力试验研究院(集团)有限公司 | A kind of multifunctional electric energy mass defect source device |
| CN109861551A (en) * | 2018-12-06 | 2019-06-07 | 国电南瑞科技股份有限公司 | A kind of rail traffic direct hanging type modularization three-phase turns single phase power supply system |
| CN114050728A (en) * | 2021-12-03 | 2022-02-15 | 日新电机（无锡）有限公司 | Power supply device for converting single phase into three phase |
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