CN103676623B - Target dynamic reactive generating means response time assay method time unified - Google Patents

Target dynamic reactive generating means response time assay method time unified Download PDF

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Publication number
CN103676623B
CN103676623B CN201310547092.0A CN201310547092A CN103676623B CN 103676623 B CN103676623 B CN 103676623B CN 201310547092 A CN201310547092 A CN 201310547092A CN 103676623 B CN103676623 B CN 103676623B
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current
voltage
transformer
current collection
response
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CN103676623A (en
Inventor
杨超颖
王康宁
王金浩
徐龙
雷达
肖莹
齐月文
仇汴
宋述勇
张悦
弥勇
曹静
杜慧杰
吴玉龙
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Shanxi Electric Power Co Ltd
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Shanxi Electric Power Co Ltd
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Abstract

The invention discloses target dynamic reactive generating means response time assay method when one is unified, what solve prior art existence measures inaccurate problem to the response time of dynamic reactive generating means.Comprise high-voltage side bus, low-pressure side bus, dynamic reactive generating means and wave tracer, the secondary side A phase of the first current collection line current mutual inductor (11) is electrically connected with the second current waveform input terminal of wave tracer (4), operating breaker (10), completes the sampling of response current waveform and response voltage waveform; In a computer, utilize " discrete data calculates effective value instrument ", build response time computation model, arranging computing time is 800 milliseconds, generate level and smooth response process voltage effective value curve (15) and current effective value curve (16), obtain the accurate dynamic reactive generating means response time.The response time of dynamic reactive generating means can accurately be calculated, be particularly suitable at electrical network onsite application.

Description

Target dynamic reactive generating means response time assay method time unified
Technical field
The present invention relates to a kind of dynamic reactive generating means accessed in electrical network to the assay method of the response time of system voltage disturbance.
Background technology
After wind energy turbine set accesses electrical network on a large scale, the application of large quantities of power electronic equipments causes the extensive off-grid of new problem, particularly wind-powered electricity generation to electrical network, can cause have a strong impact on electrical network.In order to the safe and stable operation of safeguards system, new requirement is proposed to the response time of wind energy turbine set dynamic reactive generating means.According to relevant requirements, the wind energy turbine set dynamic reactive generating means response time should within 30 milliseconds, this carries out effectively measuring truly to the response time of dynamic reactive generating means with regard to needing at the scene, thus evaluates the performance of field erected wind energy turbine set dynamic reactive generating means.Existing assay method relies on dynamic reactive generating means self to send out pulse to carry out manufacturing simulation disturbance, the truth of disturbing source can not be reflected, and the coordination and response waveform of dynamic reactive generating means various piece cannot be detected all sidedly, cause the mensuration of response time inaccurate, and then cause losing authenticity to the performance evaluation of dynamic reactive generating means.
Summary of the invention
The invention provides target dynamic reactive generating means response time assay method when one is unified, what solve prior art existence measures inaccurate problem to the response time of dynamic reactive generating means.
The present invention is overcome the above problems by following scheme:
The determinator of a kind of target dynamic reactive generating means response time when unifying, comprise high-voltage side bus, low-pressure side bus, dynamic reactive generating means and wave tracer, high-voltage side bus is electrically connected with transformer respectively, high side voltage mutual inductor, low-pressure side bus is electrically connected with the first current collection circuit respectively, second current collection circuit, dynamic reactive generating means and low-pressure side voltage transformer (VT), isolating switch is provided with between low-pressure side bus and the first current collection circuit, first current collection circuit is provided with the first current collection line current mutual inductor, the secondary side A phase of the first current collection line current mutual inductor is electrically connected with the second current waveform input terminal of wave tracer, second current collection circuit is provided with the second current collection line current mutual inductor, the secondary side A phase of the second current collection line current mutual inductor is electrically connected with the 3rd current waveform input terminal of wave tracer, line between bus and dynamic reactive generating means is provided with reactive generating device connection line current transformer, the secondary side A phase of reactive generating device connection line current transformer is electrically connected with the 4th current waveform input terminal of wave tracer, be provided with high voltage side of transformer current transformer on the transformer, the secondary side A phase of high voltage side of transformer current transformer is electrically connected with the first current waveform input terminal of wave tracer, the secondary side A phase of high side voltage mutual inductor is electrically connected with the first voltage waveform input terminal of wave tracer, the secondary side A phase of low-pressure side voltage transformer (VT) and second of wave tracer, 3rd, 4th voltage waveform input terminal electrical connection.
Wave tracer second, third, the 4th voltage waveform input terminal is connected in parallel.
Target dynamic reactive generating means response time assay method during a kind of unification, comprises the following steps:
The first step, the current collection circuit selecting load maximum are the first current collection circuit, then select other current collection circuits normally run to be the second current collection circuit;
Second step, isolating switch is provided with between low-pressure side bus and the first current collection circuit, first current collection circuit arranges the first current collection line current mutual inductor, the secondary side A phase of the first current collection line current mutual inductor is electrically connected with the second current waveform input terminal of wave tracer, second current collection circuit arranges the second current collection line current mutual inductor, the secondary side A phase of the second current collection line current mutual inductor is electrically connected with the 3rd current waveform input terminal of wave tracer, line between low-pressure side bus and dynamic reactive generating means is arranged reactive generating device connection line current transformer, the secondary side A phase of reactive generating device connection line current transformer is electrically connected with the 4th current waveform input terminal of wave tracer, high voltage side of transformer current transformer is set on the transformer, the secondary side A phase of high voltage side of transformer current transformer is electrically connected with the first current waveform input terminal of wave tracer, high-voltage side bus arranges high side voltage mutual inductor, the secondary side A phase of high side voltage mutual inductor is electrically connected with the first voltage waveform input terminal of wave tracer, low-pressure side bus arranges low-pressure side voltage transformer (VT), by the secondary side A phase of low-pressure side voltage transformer (VT) and second of wave tracer, 3rd, 4th voltage waveform input terminal electrical connection, under the mode of connection described in this step ensure that the waveform of each measuring point is unified in same markers,
3rd step, according on the first current collection circuit isolating switch disconnect time electric current Sudden Changing Rate wave tracer is set, and arrange record the ripple time be 800 milliseconds, start wave tracer;
4th step, operating breaker, cut off the first current collection circuit, and timing from during cut-out, downloads wave tracer data after spending three minutes, complete the sampling of response current waveform and response voltage waveform;
5th step, use wave form analysis software, analyze voltage, the current waveform samples data downloaded.Sample waveform is derived with the form of discrete point edlin of going forward side by side, and final formation ASCII fromat data file, is directed in computing machine;
6th step, in a computer, utilize " discrete data calculates effective value instrument ", build response time computation model, arranging computing time is 800 milliseconds, generates level and smooth response process voltage, current effective value curve;
7th step, scale is carried out to effective value curve, exceed voltage interval of acceptance for response starting point with system voltage, reach 90% of desired value for response end point with dynamic reactive generating means output current, obtain the accurate dynamic reactive generating means response time.
The fluctuation that the present invention utilizes meritorious disturbance to cause voltage and current idle, system voltage disturbance that is virtually reality like reality, can directly under unified markers, record dynamic reactive generating means, current collection circuit and transformer high and low pressure side voltage, current waveform, and calculate the response time of dynamic reactive generating means accurately, be particularly suitable at electrical network onsite application.
Accompanying drawing explanation
Fig. 1 is the structural representation of testing circuit of the present invention;
Fig. 2 is sampled data export schematic diagram of the present invention;
Fig. 3 is response time computation model schematic diagram of the present invention;
Fig. 4 is response time scale diagram of the present invention.
Embodiment
The determinator of a kind of target dynamic reactive generating means response time when unifying, comprise high-voltage side bus 1, low-pressure side bus 2, dynamic reactive generating means 3 and wave tracer 4, high-voltage side bus 1 is electrically connected with transformer 5 respectively, high side voltage mutual inductor 6, low-pressure side bus 2 is electrically connected with the first current collection circuit 7 respectively, second current collection circuit 8, dynamic reactive generating means 3 and low-pressure side voltage transformer (VT) 9, isolating switch 10 is provided with between low-pressure side bus 2 and the first current collection circuit 7, first current collection circuit 7 is provided with the first current collection line current mutual inductor 11, the secondary side A phase of the first current collection line current mutual inductor 11 is electrically connected with the second current waveform input terminal of wave tracer 4, second current collection circuit 8 is provided with the second current collection line current mutual inductor 12, the secondary side A phase of the second current collection line current mutual inductor 12 is electrically connected with the 3rd current waveform input terminal of wave tracer 4, line between low-pressure side bus 2 and dynamic reactive generating means 3 is provided with reactive generating device connection line current transformer 13, the secondary side A phase of reactive generating device connection line current transformer 13 is electrically connected with the 4th current waveform input terminal of wave tracer 4, transformer 5 is provided with high voltage side of transformer current transformer 14, the secondary side A phase of high voltage side of transformer current transformer 14 is electrically connected with the first current waveform input terminal of wave tracer 4, the secondary side A phase of high side voltage mutual inductor 6 is electrically connected with the first voltage waveform input terminal of wave tracer 4, the secondary side A phase of low-pressure side voltage transformer (VT) 9 and second of wave tracer 4, 3rd, 4th voltage waveform input terminal electrical connection.
Wave tracer 4 second, third, the 4th voltage waveform input terminal is connected in parallel.
Target dynamic reactive generating means response time assay method during a kind of unification, comprises the following steps:
The first step, the active power selecting the maximum current collection circuit of load to be the first current collection circuit 7, first current collection circuit 7 require to be greater than 80% of rated power, then select other current collection circuits normally run to be the second current collection circuit 8;
Second step, isolating switch 10 is provided with between low-pressure side bus 2 and the first current collection circuit 7, first current collection circuit 7 arranges the first current collection line current mutual inductor 11, the secondary side A phase of the first current collection line current mutual inductor 11 is electrically connected with the second current waveform input terminal of wave tracer 4, second current collection circuit 8 arranges the second current collection line current mutual inductor 12, the secondary side A phase of the second current collection line current mutual inductor 12 is electrically connected with the 3rd current waveform input terminal of wave tracer 4, line between low-pressure side bus 2 and dynamic reactive generating means 3 is arranged reactive generating device connection line current transformer 13, the secondary side A phase of reactive generating device connection line current transformer 13 is electrically connected with the 4th current waveform input terminal of wave tracer 4, transformer 5 arranges high voltage side of transformer current transformer 14, the secondary side A phase of high voltage side of transformer current transformer 14 is electrically connected with the first current waveform input terminal of wave tracer 4, high-voltage side bus 1 arranges high side voltage mutual inductor 6, the secondary side A phase of high side voltage mutual inductor 6 is electrically connected with the first voltage waveform input terminal of wave tracer 4, low-pressure side bus 2 arranges low-pressure side voltage transformer (VT) 9, by the secondary side A phase of low-pressure side voltage transformer (VT) 9 and second of wave tracer 4, 3rd, 4th voltage waveform input terminal electrical connection, under the mode of connection described in this step ensure that the waveform of each measuring point is unified in same markers,
3rd step, the Sudden Changing Rate of electric current arranges wave tracer 4 when disconnecting according to the isolating switch 10 on the first current collection circuit 7, and to arrange the record ripple time be 800 milliseconds, starts wave tracer 4;
4th step, operating breaker 10, cut off the first current collection circuit 7, and timing from during cut-out, downloads wave tracer 4 data after spending three minutes, complete the sampling of response current waveform and response voltage waveform;
5th step, use wave form analysis software, analyze voltage, the current waveform samples data downloaded, sample waveform derived with the form of discrete point edlin of going forward side by side, and final formation ASCII fromat data file, is directed in computing machine;
6th step, in a computer, utilize " discrete data calculates effective value instrument ", build response time computation model, arranging computing time is 800 milliseconds, generates level and smooth response process voltage effective value curve 15 and current effective value curve 16;
7th step, scale is carried out to voltage effective value curve 15, current effective value curve 16, voltage interval of acceptance is exceeded for response starting point 17 with system voltage, reach 90% of desired value for response end point 18 with dynamic reactive generating means output current, obtain the accurate dynamic reactive generating means response time.
This device and method is based on conventional wave tracer and power system simulation software, and simply, test result is intuitively accurate, has stronger portability for connection type and analytical approach.

Claims (1)

1. target dynamic reactive generating means response time assay method during unification, comprises the following steps:
The first step, the current collection circuit selecting load maximum are the first current collection circuit (7), and the active power of the first current collection circuit (7) requires to be greater than 80% of rated power, then select other current collection circuits normally run to be the second current collection circuit (8; )
Second step, isolating switch (10) is provided with between low-pressure side bus (2) and the first current collection circuit (7), first current collection circuit (7) arranges the first current collection line current mutual inductor (11), the secondary side A phase of the first current collection line current mutual inductor (11) is electrically connected with the second current waveform input terminal of wave tracer (4), second current collection circuit (8) arranges the second current collection line current mutual inductor (12), the secondary side A phase of the second current collection line current mutual inductor (12) is electrically connected with the 3rd current waveform input terminal of wave tracer (4), line between low-pressure side bus (2) and dynamic reactive generating means (3) is arranged reactive generating device connection line current transformer (13), the secondary side A phase of reactive generating device connection line current transformer (13) is electrically connected with the 4th current waveform input terminal of wave tracer (4), transformer (5) arranges high voltage side of transformer current transformer (14), the secondary side A phase of high voltage side of transformer current transformer (14) is electrically connected with the first current waveform input terminal of wave tracer (4), high-voltage side bus (1) arranges high side voltage mutual inductor (6), the secondary side A phase of high side voltage mutual inductor (6) is electrically connected with the first voltage waveform input terminal of wave tracer (4), low-pressure side bus (2) arranges low-pressure side voltage transformer (VT) (9), by second of the secondary side A phase of low-pressure side voltage transformer (VT) (9) and wave tracer (4), 3rd, 4th voltage waveform input terminal electrical connection, under this step ensure that the waveform of each measuring point is unified in same markers,
3rd step, according on the first current collection circuit (7) isolating switch (10) disconnect time electric current Sudden Changing Rate wave tracer (4) is set, and arrange record the ripple time be 800 milliseconds, start wave tracer (4);
4th step, operating breaker (10), cut off the first current collection circuit (7), and timing from during cut-out, downloads wave tracer (4) data after spending three minutes, complete the sampling of response current waveform and response voltage waveform;
5th step, use wave form analysis software, analyze voltage, the current waveform samples data downloaded, sample waveform derived with the form of discrete point edlin of going forward side by side, and final formation ASCII fromat data file, is directed in computing machine;
6th step, in a computer, utilize " discrete data calculates effective value instrument ", build response time computation model, arranging computing time is 800 milliseconds, generates level and smooth response process voltage effective value curve (15) and current effective value curve (16);
7th step, scale is carried out to voltage effective value curve (15), current effective value curve (16), voltage interval of acceptance is exceeded for response starting point (17) with system voltage, reach 90% of desired value for response end point (18) with dynamic reactive generating means output current, obtain the accurate dynamic reactive generating means response time.
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CN103698623A (en) * 2013-11-07 2014-04-02 国家电网公司 Method for measuring the response time of dynamic reactive power compensation device under united time scale
CN111025010A (en) * 2019-11-25 2020-04-17 科华恒盛股份有限公司 Method and device for measuring active response time of equipment and terminal equipment

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CN103033716A (en) * 2012-12-26 2013-04-10 清华大学 Calculation method of proportion of each lode component in power grid comprehensive load model
CN203037757U (en) * 2012-11-29 2013-07-03 山西省电力公司电力科学研究院 Detection apparatus for response waveform of dynamic var generation device

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CN202372798U (en) * 2011-11-16 2012-08-08 贵州航天计量测试技术研究所 Nano-second (ns) grade time interval measurement device
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