CN202177672U - High voltage 10KV electric energy quality comprehensive test platform - Google Patents
High voltage 10KV electric energy quality comprehensive test platform Download PDFInfo
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- CN202177672U CN202177672U CN2011202989392U CN201120298939U CN202177672U CN 202177672 U CN202177672 U CN 202177672U CN 2011202989392 U CN2011202989392 U CN 2011202989392U CN 201120298939 U CN201120298939 U CN 201120298939U CN 202177672 U CN202177672 U CN 202177672U
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Abstract
Provided is a high voltage 10kV electric energy quality comprehensive test platform, comprising a high voltage switch system composed of high voltage switches QF1, OF2, OF3, and QF4, an electric energy quality disturbance generator, a step down transformer, an operation supervision platform, and a test apparatus, wherein the electric energy quality disturbance generator comprises an input isolation transformer, a back-to-back power unit, an output filter LC loop, and a bypass switch. The utility model can respectively achieve the generation function of current disturbance and current disturbance and can carry out flexible transition according to the testing requirement, without complicated manual operation. The high voltage 10KV electric energy quality comprehensive test platform causes little influence upon the electrical network and consumes less electric energy amid the testing process. Moreover, the high voltage 10KV electric energy quality comprehensive test platform features simple structure and high intellectualization level and is capable of simulating a plurality of signals, thereby better meeting the requirement for the measurement of electric energy quality interference susceptibility of the electric devices.
Description
Technical field
The utility model belongs to Measurement of Harmonics in Power System, abatement equipment performance test field, relates in particular to a kind of novel high-pressure 10KV quality of power supply comprehensive test platform.
Background technology
The quality of power supply is the important indicator of Operation of Electric Systems, to electrical network with having crucial meaning per family.At present, power quality problem receives people and pays close attention to greatly.In many industries, exist in a large number to quality of power supply apparatus sensitive, especially high-tech and information industry when the power supply of these consumers is interfered, will influence their normal operation, thereby produce enormous economic loss.Therefore; Press for a kind of high-power signal generating means that can simulate the various power quality problems of generation; Various consumers are tested; Understand the sensitivity of these consumers, thereby foundation is provided for the harm that consumer brought for taking the suitable technique measure to solve power quality problem to power quality problem.
Current, being commonly used to simulate the method that produces various quality of power supply signal waveforms has following 5 kinds:
1, drives synchronous generator with diesel engine, make the generator output voltage rapid drawdown, shortcomings such as this method exists that volume is big, weight big, function singleness, output accuracy are not high, versatility difference through the size that changes generator excitation voltage;
2, simulate quality of power supply signals such as producing voltage swells, rapid drawdown, superpotential, under-voltage and harmonic wave with thyristor-controlled reactor, the shortcoming of this method is identical with said method, in addition, also can produce current harmonics;
3, produce quality of power supply signal with electric energy power standard source, the major defect of this method is that output power is not enough, can not can only be used to calibrate various A.C. voltmeters, alternating current ammeter, power meter, phase meter and electric energy meter for some powerful device power supplies;
4, utilize the small-signal source to produce signal, the method that signal amplifies is simulated through amplifier.This method is complicated, complex operation.Even amplify through amplifier, power is still less relatively, is difficult to satisfy the needs of high-power detection;
5, the utilization Power Electronic Technique is simulated generation.Though can do power greatly, satisfy the needs of high-power detection, the signal kinds that can simulate is fewer, can not satisfy the needs that detect well.
In sum, the major defect of present technological means is that volume is big, complex structure, intelligent level signal kinds low, that can simulate are fewer, even might produce the harmonic pollution electrical network.Therefore, existing technological means can't satisfy well and consumer is carried out the quality of power supply disturbs the susceptibility Testing requirement.
The utility model content
Deficiency to prior art; The utility model provide a kind of advantages of small volume, simple in structure, intelligent level is high, can simulate the high pressure 10kV quality of power supply comprehensive test platform of multiple signal; This quality of power supply comprehensive test platform does not produce harmonic wave, has avoided the pollution of harmonic wave to electrical network.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of high pressure 10KV quality of power supply comprehensive test platform comprises high-voltage switch gear system, electrical energy power quality disturbance generator, step-down transformer, operation monitoring platform, testing tool that high-voltage switch gear QF1, QF2, QF3, QF4 constitute, wherein:
High-voltage switch gear QF1, QF2, QF3, QF4 place all are equipped with one group of voltage transformer (VT) summation current transformer;
The electrical energy power quality disturbance generator is structurally formed by three identical unit combination; Each unit comprises input isolating transformer, 10 ~ 16 power cell, output filter LC loop and by-pass switches back-to-back; Each secondary winding of isolating transformer connects an input end of power cell back-to-back; A plurality of cascade of power units back-to-back constitute the 10KV voltage output end and connect output filter LC loop; Inductance L in the output filter LC loop connects an end of by-pass switch, the centre tap of another termination inductance L of by-pass switch;
The termination 10KV power end of high-voltage switch gear QF2; The isolating transformer of another termination electrical energy power quality disturbance generator; The electrical energy power quality disturbance generator links to each other with high-voltage switch gear QF3 through output filter LC loop, and the other end of high-voltage switch gear QF3 can connect the low-pressure side or the high-voltage switch gear QF4 of tested article, the high-pressure side of the termination step-down transformer of high-voltage switch gear QF4; The low-pressure side of step-down transformer connects the low-pressure side of tested article; The high-pressure side of tested article can be selected to connect or do not connect high-voltage switch gear QF1, another termination 10KV power supply of high-voltage switch gear QF1, and the electrical energy power quality disturbance generator is communicated by letter with the operation monitoring platform through the RS485 interface.
Input isolating transformer in the above-mentioned electrical energy power quality disturbance generator all adopts single-phase multiwinding transformer, and former edge joint becomes star or triangle, and secondary adopts many winding outputs, and each secondary winding connects the input end of a power cell.
The aforesaid operations monitoring platform is two workstations that are arranged in Control Room; Comprise electrical energy power quality disturbance generator control monitor and tested article supervision oscillograph; Electrical energy power quality disturbance generator control monitor and tested article are kept watch between the oscillograph and are communicated through the RS485 interface, and tested article are kept watch on oscillograph the voltage that flows through tested article, electric current etc. are kept watch on the record ripple.
Above-mentioned testing tool is power quality analyzer, infrared temperature tester and/or noise-measuring instrument, will be in each test process according to the different choice of tested article different testing tools.
The core of the utility model is the electrical energy power quality disturbance generator, and wherein each power cell is the identical H bridge of structure four quadrant convertor back-to-back, can realize the two-way flow of power.Electrical energy power quality disturbance generator mode of operation is divided into current disturbing source and voltage disturbance source module.Under the current disturbing source module, its equivalent schematic is as shown in Figure 1.Rectification unit can work independently, and adopts vertical compression control and unity power factor to control the balance of guaranteeing dc capacitor voltage, realizes unity power factor simultaneously, and is as shown in Figure 2.Inversion unit can require carry out corresponding modulation according to disturbing source output, and with the inversion side cascade of remaining element, the unit of cascade adopts phase-shift PWM modulation, the carrier wave anti-phase of two half-bridges in the H bridge usually.Be the control strategy synoptic diagram of inversion side like Fig. 3, as can be seen from the figure inversion side is to adopt Current Control Strategy to guarantee that injection current
forces into instruction current
.When the electrical energy power quality disturbance generator was operated in the voltage disturbance source module, its principle of work was identical with principle under the current disturbing pattern.
Compared with prior art, the utlity model has following advantage and beneficial effect:
1, the utility model adopts back-to-back the cascade of power units structure as output, links as the PWM rectifier and the isolating transformer secondary winding of its input end, has the reliability height, characteristics such as design concept advanced person;
2, the utility model can realize respectively that voltage disturbance takes place and current disturbing generation function, generally can only realize voltage disturbance or current disturbing in the prior art, so the utility model can need not the complex manual operation according to the test request flexible conversion;
3, the utility model and measurand constitute a power ring, and be little to the disturbance of electrical network, and power consumption is little in the test process simultaneously;
4 compare with prior art, the utlity model has that volume is less, simple in structure, intelligent level is high, can simulate multiple signal, can better meet consumer and carry out the quality of power supply and disturb the susceptibility Testing requirement.The utility model does not produce harmonic wave in work constitutes, can also avoid the pollution of harmonic wave to electrical network.
Description of drawings
Fig. 1 is the equivalent schematic of electrical energy power quality disturbance generator under the current disturbing source module;
Fig. 2 is an electrical energy power quality disturbance generator rectification side control strategy synoptic diagram;
Fig. 3 is an electrical energy power quality disturbance generator inversion side control strategy synoptic diagram;
Fig. 4 is the utility model structured flowchart;
Fig. 5 is the main circuit synoptic diagram of electrical energy power quality disturbance generator in the utility model;
Fig. 6 is a power cell circuit diagram back-to-back in the electrical energy power quality disturbance generator;
Fig. 7 is substation transformer no-load voltage test wiring schematic diagram;
Fig. 8 is load transformer test wiring schematic diagram;
Fig. 9 is reactive-load compensation capacitor test wiring schematic diagram;
Figure 10 is compensation equipment test wiring schematic diagram.
Embodiment
To combine accompanying drawing that the technical scheme of the utility model is done further to describe below.
Fig. 4 is the high pressure 10kV quality of power supply comprehensive test platform one-piece construction synoptic diagram of the utility model; As can be seen from the figure; The utility model comprises high-voltage switch gear system, electrical energy power quality disturbance generator, step-down transformer, operation monitoring platform, the testing tool that high-voltage switch gear QF1, high-voltage switch gear QF2, high-voltage switch gear QF3, high-voltage switch gear QF4 constitute, wherein:
1. high-voltage switch gear QF1～QF4 all refers to a switch and the high-tension switch gear that the relay protection circuit of measurement and control constitutes; And high-voltage switch gear QF1, QF2, QF3, QF4 place all are equipped with one group of voltage transformer (VT) summation current transformer (PT/CT); Voltage transformer (VT) can become the high voltage of primary side in proportion and is fit to that instrument or relay use, the rated voltage conversion equipment as 100V, and current transformer can become that suitable instrument or relay use, the rated current conversion equipment as 5A or 1A in proportion with primary side current;
2. step-down transformer can carry out the current disturbing test to tested substation transformer;
3. the electrical energy power quality disturbance generator is the core of the utility model; Can realize Power Conversion and export the electrical energy power quality disturbance power signal of various appointments; It is structurally formed by three identical unit combination; Each unit comprises input isolating transformer, a plurality of power cell back-to-back and output filter LC loop, and shown in Figure 5 is the circuit diagram of electrical energy power quality disturbance generator, and the secondary winding of each input isolating transformer connects an input end of power cell back-to-back; A plurality of cascade of power units back-to-back constitute the 10KV voltage output end and connect output filter LC loop, and the quantity of power cell is 10 ~ 16 back-to-back; Power cell adopts prior art back-to-back, is interconnected by PWM rectifier and PWM inverter to constitute, and the PWM rectifier is an input end, and the PWM inverter is output terminal, and is as shown in Figure 6;
The main effect in output filter LC loop is a filtering switch time high frequency ripple, makes output voltage or current waveform smooth, improves precision.When the electrical energy power quality disturbance generator is operated in voltage or current disturbing output; The parameter in output filter LC loop is different; Therefore adopt a by-pass switch to change the inductance value in the place in circuit; One end of the inductance L in the by-pass switch one termination wave filter LC loop, the centre tap of another termination inductance L;
As preferably; Input isolating transformer in each single-phase electric energy quality disturbance generator adopts single-phase multiwinding transformer; Its former edge joint becomes star or triangle, and secondary adopts many winding outputs, and each secondary winding connects the input end of a power cell; Every mutually a plurality of inverter cascade constitutes the output of 10KV high pressure, and single-phase multiwinding transformer can prevent the coupling on the mutual magnetic circuit of PWM rectifier;
4. the operation monitoring platform is two workstations that are arranged in Control Room; Comprise electrical energy power quality disturbance generator control monitor and tested article supervision oscillograph; Electrical energy power quality disturbance generator control monitor and tested article are kept watch between the oscillograph and are communicated through the RS485 interface, and tested article are kept watch on oscillograph the voltage that flows through tested article, electric current etc. are kept watch on the record ripple;
5. testing tool is preferably power quality analyzer, infrared temperature tester and/or noise-measuring instrument, can be in each test process according to the different choice of tested article different testing tools;
6. high-voltage switch gear QF1 ~ QF4 is a three-phase breaker; Three-phase can break off or close simultaneously; The termination 10KV power end of high-voltage switch gear QF2; The three-phase of the other end connects three isolating transformers of electrical energy power quality disturbance generator respectively, and the electrical energy power quality disturbance generator links to each other with the three-phase of high-voltage switch gear QF3 respectively through three output filter LC loops, and the other end of high-voltage switch gear QF3 can select to connect tested article or high-voltage switch gear QF4; The high-pressure side of another termination step-down transformer of high-voltage switch gear QF4; The low-pressure side of step-down transformer connects the low-pressure side of tested article, and high-voltage switch gear QF1, another termination 10KV power supply of high-voltage switch gear QF1 can be selected to connect or do not connect in the high-pressure side of tested article; The electrical energy power quality disturbance generator is communicated by letter with the operation monitoring platform through the RS485 interface.
To combine accompanying drawing 7～10 to specify several kinds of application of the utility model test platform below.
Application 1
When adopting the utility model that substation transformer is carried out the no-load voltage test; This moment, the wiring of the utility model was: the termination 10KV power end of high-voltage switch gear QF2; The isolating transformer of another termination electrical energy power quality disturbance generator; The electrical energy power quality disturbance generator links to each other with high-voltage switch gear QF3 through output filter LC loop, and the other end of high-voltage switch gear QF3 directly connects tested substation transformer, and the infrared temperature tester is connected with tested substation transformer with noise-measuring instrument; So that it is test the temperature and the noise index of tested substation transformer, as shown in Figure 7.
Start this test platform; The electrical energy power quality disturbance generator begins the output order voltage waveform; The monitor of electrical energy power quality disturbance generator control simultaneously starts record ripple signal, after tested article supervision oscillograph receives this signal, through the RS485 interface electrical energy power quality disturbance generator output voltage and tested substation transformer response current is recorded ripple; Receive and write down indexs such as tested distribution transformer actuator temperature and noise simultaneously, and analyze the response characteristic of tested substation transformer loss, exciting current etc.; In addition; Can also apply the lasting electrical energy power quality disturbance voltage of signals waveform that contains to tested substation transformer through the electrical energy power quality disturbance generator; Test tested substation transformer front and back dielectric level then; And the data of being tested are sent to tested article keep watch on oscillograph, and adopt tested article to keep watch on oscillograph and analyze the quantitative data of the quality of power supply tested substation transformer dielectric level influence.
When adopting the utility model substation transformer is with when carrying test; This moment, the wiring of the utility model was: the termination 10KV power end of high-voltage switch gear QF2; The isolating transformer of another termination electrical energy power quality disturbance generator, the electrical energy power quality disturbance generator links to each other another termination high-voltage switch gear QF4 of high-voltage switch gear QF3 through output filter LC loop with high-voltage switch gear QF3; The high-pressure side of another termination step-down transformer of high-voltage switch gear QF4; The low-pressure side of step-down transformer connects the low-pressure side of tested substation transformer, the high pressure side joint high-voltage switch gear QF1 of tested substation transformer, and the infrared temperature tester is connected with substation transformer with noise-measuring instrument; So that it is test the temperature and the noise index of tested substation transformer, as shown in Figure 8.
Start this test platform; The electrical energy power quality disturbance generator begins the output order voltage waveform; The monitor of disturbance generator control simultaneously starts record ripple signal, after tested article are kept watch on oscillograph and are received this signal, through the RS485 interface to the former secondary voltage electric current of tested substation transformer is recorded ripple; Write down the data such as temperature and noise of tested substation transformer simultaneously, and analyze tested substation transformer response characteristic under nonlinear-load.Can also apply the lasting current waveform that contains the electrical energy power quality disturbance signal to tested substation transformer through the electrical energy power quality disturbance generator; Test tested substation transformer front and back dielectric level then; And the data of being tested are sent to tested article keep watch on oscillograph, and adopt tested article to keep watch on oscillograph and analyze the quantitative data of the quality of power supply tested substation transformer dielectric level influence.
Use 3
When adopting the utility model that reactive-load compensation capacitor is tested; This moment, the wiring of the utility model was: the termination 10KV power end of high-voltage switch gear QF2; The isolating transformer of another termination electrical energy power quality disturbance generator, the electrical energy power quality disturbance generator links to each other the tested reactive-load compensation capacitor of another termination of high-voltage switch gear QF3 through output filter LC loop with high-voltage switch gear QF3; The other end ground connection of tested reactive-load compensation capacitor; And the infrared temperature tester is connected with tested reactive-load compensation capacitor with noise-measuring instrument, so that it is test the temperature and the noise index of tested reactive-load compensation capacitor, as shown in Figure 9.
Start this test platform; The electrical energy power quality disturbance generator begins the output order voltage waveform; The monitor of electrical energy power quality disturbance generator control simultaneously starts record ripple signal, after tested article supervision oscillograph receives this signal, through the RS485 interface electrical energy power quality disturbance generator output voltage and capacitor response current is recorded ripple; Write down data such as tested reactive-load compensation capacitor temperature and noise simultaneously, and analyze the response characteristic of tested reactive-load compensation capacitor loss, harmonic wave amplification etc.
Use 4
When adopting the utility model to compensation equipment (like SVG, SVC etc.) when testing; This moment, the wiring of the utility model was: the termination 10KV power end of high-voltage switch gear QF2; The isolating transformer of another termination electrical energy power quality disturbance generator, the electrical energy power quality disturbance generator links to each other with high-voltage switch gear QF3 through output filter LC loop, and the other end of high-voltage switch gear QF3 meets tested compensation equipment and high-voltage switch gear QF1 simultaneously; Another termination 10KV power supply of high-voltage switch gear QF1, shown in figure 10.
Start this test platform; The electrical energy power quality disturbance generator sends various load current waveforms according to instruction; The monitor of electrical energy power quality disturbance generator control simultaneously starts record ripple signal; After tested article are kept watch on oscillograph and are received this signal, through the former secondary current of the tested compensation equipment of RS485 interface tracking, and according to the former secondary current waveform of record analyze compensation equipment dynamically and static characteristics.
Claims (5)
1. a high pressure 10kV quality of power supply comprehensive test platform is characterized in that, comprising:
High-voltage switch gear system, electrical energy power quality disturbance generator, step-down transformer, operation monitoring platform, testing tool that high-voltage switch gear QF1, QF2, QF3, QF4 constitute, wherein:
High-voltage switch gear QF1, QF2, QF3, QF4 place all are equipped with voltage sensor and current sensor;
The electrical energy power quality disturbance generator is structurally formed by three identical unit combination; Each unit comprises input isolating transformer, 10 ~ 16 power cell, output filter LC loop and by-pass switches back-to-back; Each secondary winding of isolating transformer connects an input end of power cell back-to-back; A plurality of cascade of power units back-to-back constitute the 10KV voltage output end and connect output filter LC loop; Inductance L in the output filter LC loop connects an end of by-pass switch, the centre tap of another termination inductance L of by-pass switch;
The termination 10KV power end of high-voltage switch gear QF2; The isolating transformer of another termination electrical energy power quality disturbance generator; The electrical energy power quality disturbance generator links to each other with high-voltage switch gear QF3 through output filter LC loop, and the other end of high-voltage switch gear QF3 can connect the low-pressure side or the high-voltage switch gear QF4 of tested article, the high-pressure side of the termination step-down transformer of high-voltage switch gear QF4; The low-pressure side of step-down transformer connects the low-pressure side of tested article; The high-pressure side of tested article can be selected to connect or do not connect high-voltage switch gear QF1, another termination 10KV power supply of high-voltage switch gear QF1, and the electrical energy power quality disturbance generator is communicated by letter with the operation monitoring platform through the RS485 interface.
2. high pressure 10kV quality of power supply comprehensive test platform according to claim 1 is characterized in that:
Input isolating transformer in the described electrical energy power quality disturbance generator all adopts single-phase multiwinding transformer, and former edge joint becomes star or triangle, and secondary adopts many winding outputs, and each secondary winding connects the input end of a power cell.
3. high pressure 10kV quality of power supply comprehensive test platform according to claim 1 and 2 is characterized in that:
Described operation monitoring platform comprises electrical energy power quality disturbance generator control monitor and tested article supervision oscillograph, and electrical energy power quality disturbance generator control monitor and tested article are kept watch between the oscillograph and communicated through the RS485 interface.
4. high pressure 10kV quality of power supply comprehensive test platform according to claim 1 and 2 is characterized in that:
Described testing tool is power quality analyzer, infrared temperature tester and/or noise-measuring instrument.
5. high pressure 10kV quality of power supply comprehensive test platform according to claim 3 is characterized in that:
Described testing tool is power quality analyzer, infrared temperature tester and/or noise-measuring instrument.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011202989392U CN202177672U (en) | 2011-08-17 | 2011-08-17 | High voltage 10KV electric energy quality comprehensive test platform |
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| CN2011202989392U CN202177672U (en) | 2011-08-17 | 2011-08-17 | High voltage 10KV electric energy quality comprehensive test platform |
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| CN202177672U true CN202177672U (en) | 2012-03-28 |
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| CN2011202989392U Expired - Fee Related CN202177672U (en) | 2011-08-17 | 2011-08-17 | High voltage 10KV electric energy quality comprehensive test platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103018612A (en) * | 2012-12-31 | 2013-04-03 | 国家电网公司 | Full-function electric-energy quality comprehensive test platform |
| CN103743981A (en) * | 2014-01-17 | 2014-04-23 | 海南金盘电气有限公司 | Testing system for static var generator |
| CN104034982A (en) * | 2014-06-19 | 2014-09-10 | 国家电网公司 | Electric energy quality harmonic disturbance source platform |
| CN104635114A (en) * | 2015-03-04 | 2015-05-20 | 江苏省电力公司常州供电公司 | Electric energy quality disturbance source positioning system and positioning method |
| CN104698306A (en) * | 2013-12-06 | 2015-06-10 | 国家电网公司 | Custom power equipment detection circuit and equipment |
| CN104764951A (en) * | 2015-03-16 | 2015-07-08 | 国网河南省电力公司电力科学研究院 | 380 V voltage class APF testing platform and testing method |
| CN104764952A (en) * | 2015-03-16 | 2015-07-08 | 国网河南省电力公司电力科学研究院 | 10 kV voltage class STATCOM testing platform and testing method |
| CN106443256A (en) * | 2016-09-28 | 2017-02-22 | 国家电网公司 | Power grid simulator used for harmonic simulation |
| CN106856373A (en) * | 2015-12-09 | 2017-06-16 | 中国电力科学研究院 | A kind of harmonic wave generation device |
| CN107015084A (en) * | 2017-05-12 | 2017-08-04 | 国网上海市电力公司 | A kind of distribution reactive power compensator analogue test platform |
| CN107783041A (en) * | 2017-11-27 | 2018-03-09 | 华北电力科学研究院有限责任公司 | The test of transducer drive electric system power supply disturbance tolerance, evaluation method and device |
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2011
- 2011-08-17 CN CN2011202989392U patent/CN202177672U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103018612A (en) * | 2012-12-31 | 2013-04-03 | 国家电网公司 | Full-function electric-energy quality comprehensive test platform |
| CN103018612B (en) * | 2012-12-31 | 2015-08-12 | 国家电网公司 | A kind of full-function electric-energy quality comprehensive test platform |
| 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 |
| CN103743981B (en) * | 2014-01-17 | 2017-10-27 | 海南金盘电气有限公司 | A kind of test system of static reacance generator |
| CN103743981A (en) * | 2014-01-17 | 2014-04-23 | 海南金盘电气有限公司 | Testing system for static var generator |
| CN104034982A (en) * | 2014-06-19 | 2014-09-10 | 国家电网公司 | Electric energy quality harmonic disturbance source platform |
| CN104635114A (en) * | 2015-03-04 | 2015-05-20 | 江苏省电力公司常州供电公司 | Electric energy quality disturbance source positioning system and positioning method |
| CN104635114B (en) * | 2015-03-04 | 2017-11-21 | 江苏省电力公司常州供电公司 | Electric energy quality disturbance source positioning system and positioning method |
| CN104764951A (en) * | 2015-03-16 | 2015-07-08 | 国网河南省电力公司电力科学研究院 | 380 V voltage class APF testing platform and testing method |
| CN104764952A (en) * | 2015-03-16 | 2015-07-08 | 国网河南省电力公司电力科学研究院 | 10 kV voltage class STATCOM testing platform and testing method |
| CN106856373A (en) * | 2015-12-09 | 2017-06-16 | 中国电力科学研究院 | A kind of harmonic wave generation device |
| CN106443256A (en) * | 2016-09-28 | 2017-02-22 | 国家电网公司 | Power grid simulator used for harmonic simulation |
| CN107015084A (en) * | 2017-05-12 | 2017-08-04 | 国网上海市电力公司 | A kind of distribution reactive power compensator analogue test platform |
| CN107783041A (en) * | 2017-11-27 | 2018-03-09 | 华北电力科学研究院有限责任公司 | The test of transducer drive electric system power supply disturbance tolerance, evaluation method and device |
| CN108303590A (en) * | 2018-01-31 | 2018-07-20 | 湖南大学 | MW class wide-band impedance measuring device based on MMC and its control method |
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