CN2906632Y - Portable dynamic PMU performance tester - Google Patents

Portable dynamic PMU performance tester Download PDF

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Publication number
CN2906632Y
CN2906632Y CN 200520046578 CN200520046578U CN2906632Y CN 2906632 Y CN2906632 Y CN 2906632Y CN 200520046578 CN200520046578 CN 200520046578 CN 200520046578 U CN200520046578 U CN 200520046578U CN 2906632 Y CN2906632 Y CN 2906632Y
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CN
China
Prior art keywords
shaft key
pmu
signal
phase pulse
unit
Prior art date
Application number
CN 200520046578
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Chinese (zh)
Inventor
丁孝华
赵宗强
高翔
孙国成
毕晓亮
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上海南瑞实业有限公司
上海华东电力信息工程技术有限公司
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Application filed by 上海南瑞实业有限公司, 上海华东电力信息工程技术有限公司 filed Critical 上海南瑞实业有限公司
Priority to CN 200520046578 priority Critical patent/CN2906632Y/en
Application granted granted Critical
Publication of CN2906632Y publication Critical patent/CN2906632Y/en

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Abstract

The utility model relates to a portable PMU dynamic performance testing instrument, comprising a GPS clock signal generator connected with a digital signal processing unit and a high-speed analog sample signal input unit. The acquired phase current and phase voltage of external transmission network are transmitted to an engine shaft key phase pulse generating unit and the digital signal processing unit respectively; a switching value input unit is also provided; the engine shaft key phase pulse generating unit is used for transforming the port three-phase voltage and current signals input the engine from outside into analog engine shaft key phase pulse signal, which has the same frequency with the port voltage through wave formation; after the signal is optoelectronic isolated, a changeover switch is used for choosing the external engine shaft key phase pulse input or internal analog engine shaft key phase signal output; a switching value input unit is a relay contact output circuit used for collecting the shifting signal of the switch and outputting the adjustable shifting time through high-voltage optical coupling isolation for checking the time accuracy of PMU instrument collecting signals, so as to solve the problems of field performance checking and error checking of wide area synchronous phasor.

Description

Portable PMU dynamic characteristics measuring instrument
Technical field
The utility model device is a kind of on-the-spot special portable formula PMU dynamic characteristics measuring instrument that phasor measuring set (PMU) is carried out dynamic property, basic function, be applied to electrical power system wide-area measuring system (WAMS) or electrical network dynamic monitoring system, the phasor measuring set (PMU) that is installed on generating plant and transformer station carried out the test such as Performance Detection, function check of the dynamic phasor of on-the-spot electrical network.Portable PMU dynamic characteristics measuring instrument is applicable to the measuring accuracy of field quick detection PMU device high-speed sampling generator built-in potential merit angle, unit and line voltage distribution and electric current phasor, detect the measuring accuracy of direct current signals such as unit phase discriminating pulse, tacho-pulse, exciting current, voltage, the gps satellite timing synchronization performance of test PMU device.Belong to electricity net safety stable Dynamic Monitoring field.
Background technology
Because the U.S., Europe, Russia recur big electricity net safety stable and destroys and cause large area blackout, national economy and social stability caused have a strong impact on.Move in order to ensure area electric network safety stabilization, each big electrical network is all strengthened electrical network dynamic monitoring Study on Technology both at home and abroad, accelerate the application of WAMS (WAMS) and phasor measuring set (PMU), in a large number in some load-center substations and the installation phasor measuring set PMU of big power station.
Because voltage, current amplitude and the phase angle of genset and transmission line of electricity change in time fast, the dynamic stability degree that directly reflects electric system, realize the synchronous phasor measuring device (PMU) of detection of dynamic, use current up-to-date science and technology and international standard, comprise: the measuring technique that gps satellite Clock Synchronization Technology, the high-speed sampling of 4800-10000 point/second and discrete digital are handled, the detection technique at unit built-in potential merit angle, computer network communication technology etc.
At present,, still do not have the suitable on-the-spot portable PMU dynamic characteristics measuring instrument that detects both at home and abroad, be difficult to guarantee that the performance of PMU device satisfies the requirement of electrical network dynamic stability monitoring the PMU device of the new covers up to a hundred new and high technology like this of installing in the whole nation.At present, can only adopt the high-speed figure oscillograph in the laboratory, the sampled data of voltage, current waveform in record a period of time, calculate by numerical analysis, the performance of PMU device is carried out sample testing, this method complicated operation and wasting time and energy, be not suitable for PMU device to a large amount of installation factory station, Performance Detection and the error done before putting into operation are checked, and more can't detect the measuring accuracy of PMU device to unit built-in potential merit angle, directly have influence on the correctness that the electrical network dynamic stability is judged.Therefore, electric system demands researching and developing portable PMU dynamic characteristics measuring instrument urgently.
Summary of the invention
For solving the problem of aforementioned existence, to being distributed in each factory's on-the-spot synchronous phasor measuring device (PMU) in station, the utility model provides a kind of portable PMU dynamic characteristics measuring instrument, guarantees that various places PMU device provides in real time for electrical network dynamic stability supervisory system and phasor data accurately.
The technical solution of the utility model is: a gps clock signal is connected with digital signal processing unit, one high-speed sampling analog input unit, gather phase current, the phase voltage of external electrical network, one the road delivers to alternator shaft key phase pulse generation unit, one the road delivers to digital signal processing unit, other is provided with the switching value input block and is connected with digital signal processing unit, and the signal after digital signal processing unit will be handled is delivered to network communication interface;
Alternator shaft key phase pulse generation unit, be generator machine end three-phase voltage, the current signal of the outside being imported this device, through wave shaping, be transformed to simulation unit rotating shaft key phase pulse signal with the set end voltage same frequency, after the photoelectricity isolation, adopt change-over switch to select to export by external generator rotating shaft key phase pulse input or by internal simulation alternator shaft key signal;
Described switch input block is to adopt the high pressure light-coupled isolation to gather the displacement signal of switch, exports mutual actuation time of adjustable relay tip output circuit, in order to detect the time precision that PMU device acquired signal changes.
Exporting mutual actuation time of adjustable relay tip output circuit, is in each relay front, and a delay circuit is set, and the relay back engages lock output or tripping operation output.
The beneficial effect of the utility model device is: portable PMU dynamic characteristics measuring instrument provides field performance test environment and technological means for the PMU device of generating plant and transformer station.Unit and line voltage distribution/electric current with on-the-spot reality or simulation, field voltage/electric current, switch position signal, this tester of input such as alternator shaft key phase pulse signal and tested PMU device, this tester is with per second 10000Hz sample rate, the various parameter amounts of high speed acquisition input, and calculate target synchronized phasor when having high precision, and can produce phase-locked and simulation unit key phase pulse signal that mutual phasor adjustable angle is put in order with set end voltage, do not have all can detect the measuring power angle performance of PMU device under the key phase pulse input condition when possessing pulse input of key phase or unit maintenance in the time of can satisfying on-the-spot unit operation.The phasor data of this tester and tested PMU device recording are communicated by letter by express network is sent to supporting " wide area phasor measurement main website/concentrator/test of PMU communication simulation and analysis software ", calculates the dynamic property and the measuring accuracy of tested PMU device.The utility model device solves the field performance of wide area synchronous phasor measuring device detect and error is checked problem, bring into play good action on-the-spot detection of 16 30 PMU in station of factories of East China Power Grid in debugging first.
Description of drawings
Accompanying drawing 1 the utility model circuit composition frame chart.
Accompanying drawing 2 analog pulse generation circuit/pulse input and output commutation circuit block diagram.
Accompanying drawing 3 switching value input/output interface block diagrams.
Accompanying drawing 4 is signal processor block schemes.
Embodiment
Please refer to accompanying drawing below describes in further detail the utility model.Among the embodiment shown in Fig. 1,2,3,4, one gps clock signal 4 is connected with digital signal processing unit 4, one high-speed sampling analog input unit 1, gather phase current, the phase voltage of external electrical network, one the road delivers to alternator shaft key phase pulse generation unit 2, one the road delivers to digital signal processing unit 3, other is provided with switching value input block 5 and is connected with digital signal processing unit 3, digital signal processing unit 3, be provided with CPU, A/D analog to digital converter and storer, with the digital signal after handling, deliver to network communication interface 7;
Alternator shaft key phase pulse generation unit 2, be that generator machine end three-phase voltage, current signal are imported in the outside, through filtering circuit 8 and waveform shaping circuit 9, be transformed to simulation unit rotating shaft key phase pulse signal with the set end voltage same frequency, behind photoelectric isolating circuit 10, adopt change-over switch 11, again after photoelectricity isolates 12, selection is used for internal pulses and measures 13 by external generator rotating shaft key phase pulse input or by the output of internal simulation alternator shaft key signal;
Described switch input block is to adopt the high pressure light-coupled isolation to gather the displacement signal of switch, exports mutual actuation time of adjustable relay tip output circuit, in order to detect the time precision that PMU device acquired signal changes.
Exporting mutual actuation time of adjustable relay tip output circuit, is in each relay 15 front, and a delay circuit 14 is set, and relay 15 back engage lock output or tripping operation output 16.
Unit and line voltage distribution/electric current with on-the-spot reality or simulation, field voltage/electric current, switch position signal, this tester of input such as alternator shaft key phase pulse signal and tested PMU device, this tester is with per second 10000Hz sample rate, the various parameter amounts of high speed acquisition input, and calculate target synchronized phasor when having high precision, and can produce phase-locked and simulation unit key phase pulse signal that mutual phasor adjustable angle is put in order with set end voltage, do not have all can detect the measuring power angle performance of PMU device under the key phase pulse input condition when possessing pulse input of key phase or unit maintenance in the time of can satisfying on-the-spot unit operation.The phasor data of this tester and tested PMU device recording are communicated by letter by express network is sent to supporting " wide area phasor measurement main website/concentrator/test of PMU communication simulation and analysis software ", calculates the dynamic property and the measuring accuracy of tested PMU device.The utility model device solves the field performance of wide area synchronous phasor measuring device detect and error is checked problem, bring into play good action on-the-spot detection of 16 30 PMU in station of factories of East China Power Grid in debugging first.

Claims (4)

1. portable PMU dynamic characteristics measuring instrument, it is characterized in that: a gps clock signal is connected with digital signal processing unit, one high-speed sampling analog input unit, gather phase current, the phase voltage of external electrical network, one the road delivers to alternator shaft key phase pulse generation unit, and one the road delivers to digital signal processing unit, and other is provided with the switching value input block and is connected with digital signal processing unit, signal after digital signal processing unit will be handled is delivered to network communication interface.
2. by the described portable PMU dynamic characteristics measuring instrument of claim 1, it is characterized in that: alternator shaft key phase pulse generation unit, be that generator machine end three-phase voltage, current signal are imported in the outside, through wave shaping, be transformed to simulation unit rotating shaft key phase pulse signal with the set end voltage same frequency, after the photoelectricity isolation, adopt change-over switch to select to export by external generator rotating shaft key phase pulse input or by internal simulation alternator shaft key signal.
3. by the described portable PMU dynamic characteristics measuring instrument of claim 1, it is characterized in that: described switch input block is to adopt the high pressure light-coupled isolation to gather the displacement signal of switch, exports mutual actuation time of adjustable relay tip output circuit.
4. by the described portable PMU dynamic characteristics measuring instrument of claim 1, it is characterized in that: export mutual actuation time of adjustable relay tip output circuit, be in each relay front, a delay circuit is set, the relay back engages lock output or tripping operation output.
CN 200520046578 2005-11-16 2005-11-16 Portable dynamic PMU performance tester CN2906632Y (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101465544A (en) * 2008-12-30 2009-06-24 上海市电力公司 Real time collection and monitoring system for electrification side control performance standard check
CN101592695B (en) * 2009-04-22 2010-12-01 北京四方继保自动化股份有限公司 Dynamic performance test method for synchronous phasor measurement unit PMU
CN101271139B (en) * 2008-05-19 2011-07-06 福建亿榕信息技术有限公司 High-precision switching value detecting instrument and detecting method
CN102298115A (en) * 2011-05-20 2011-12-28 国电南瑞科技股份有限公司 Method for online monitoring and analyzing adjustment performance of excitation system based on phasor measurement technology
CN102591211A (en) * 2012-02-28 2012-07-18 江西省电力科学研究院 Synchronous simulation control system
WO2013127034A1 (en) * 2012-02-28 2013-09-06 江西省电力科学研究院 Multi-node synchronous on-site test method
CN105785126A (en) * 2016-04-18 2016-07-20 国网山东省电力公司郓城县供电公司 Novel power grid phasor synchronization measurement device
CN106771599A (en) * 2016-11-21 2017-05-31 国网四川省电力公司电力科学研究院 Intelligent substation synchronous phasor measuring device method of testing and test device
CN108732522A (en) * 2017-04-21 2018-11-02 南京南瑞继保电气有限公司 The test device and method of generator rotor interturn short-circuit fault monitoring device
CN109521331A (en) * 2018-12-18 2019-03-26 国网重庆市电力公司电力科学研究院 A kind of power distribution network applies the automatization test system of signal generation apparatus outside
CN110308343A (en) * 2019-06-11 2019-10-08 南方电网科学研究院有限责任公司 Suitable for distribution PMU device and the test platform of distribution wide area system main website

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101271139B (en) * 2008-05-19 2011-07-06 福建亿榕信息技术有限公司 High-precision switching value detecting instrument and detecting method
CN101465544B (en) * 2008-12-30 2012-12-26 上海市电力公司 Real time collection and monitoring system for electrification side control performance standard check
CN101465544A (en) * 2008-12-30 2009-06-24 上海市电力公司 Real time collection and monitoring system for electrification side control performance standard check
CN101592695B (en) * 2009-04-22 2010-12-01 北京四方继保自动化股份有限公司 Dynamic performance test method for synchronous phasor measurement unit PMU
CN102298115B (en) * 2011-05-20 2013-07-31 国电南瑞科技股份有限公司 Method for online monitoring and analyzing adjustment performance of excitation system based on phasor measurement technology
CN102298115A (en) * 2011-05-20 2011-12-28 国电南瑞科技股份有限公司 Method for online monitoring and analyzing adjustment performance of excitation system based on phasor measurement technology
CN102591211A (en) * 2012-02-28 2012-07-18 江西省电力科学研究院 Synchronous simulation control system
US9784799B2 (en) 2012-02-28 2017-10-10 Jiangxi electric power science research institute Multi-node synchronous on-site test method
WO2013127034A1 (en) * 2012-02-28 2013-09-06 江西省电力科学研究院 Multi-node synchronous on-site test method
CN102591211B (en) * 2012-02-28 2015-03-25 江西省电力科学研究院 Synchronous simulation control system
CN105785126A (en) * 2016-04-18 2016-07-20 国网山东省电力公司郓城县供电公司 Novel power grid phasor synchronization measurement device
CN106771599A (en) * 2016-11-21 2017-05-31 国网四川省电力公司电力科学研究院 Intelligent substation synchronous phasor measuring device method of testing and test device
CN108732522A (en) * 2017-04-21 2018-11-02 南京南瑞继保电气有限公司 The test device and method of generator rotor interturn short-circuit fault monitoring device
CN108732522B (en) * 2017-04-21 2020-07-28 南京南瑞继保电气有限公司 Testing device and method for generator rotor winding turn-to-turn short circuit fault monitoring device
CN109521331A (en) * 2018-12-18 2019-03-26 国网重庆市电力公司电力科学研究院 A kind of power distribution network applies the automatization test system of signal generation apparatus outside
CN110308343A (en) * 2019-06-11 2019-10-08 南方电网科学研究院有限责任公司 Suitable for distribution PMU device and the test platform of distribution wide area system main website

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CP03 Change of name, title or address

Address after: 7 building, No. 32 plant building, 680 Guiping Road, Shanghai, zip code: 200233

Co-patentee after: Shanghai Rui Hao Information Technology Co., Ltd.

Patentee after: Shanghai nun Industry Co., Ltd.

Address before: 7 building, No. 32 plant building, 680 Guiping Road, Shanghai, zip code: 200233

Co-patentee before: Huadong Power Information Engineering Tech Co., Ltd., Shanghai

Patentee before: Shanghai nun Industry Co., Ltd.

C56 Change in the name or address of the patentee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070530

Termination date: 20111116

C17 Cessation of patent right