CN101162264A - Watthour meter remote verify monitoring system - Google Patents
Watthour meter remote verify monitoring system Download PDFInfo
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- CN101162264A CN101162264A CNA2006101171366A CN200610117136A CN101162264A CN 101162264 A CN101162264 A CN 101162264A CN A2006101171366 A CNA2006101171366 A CN A2006101171366A CN 200610117136 A CN200610117136 A CN 200610117136A CN 101162264 A CN101162264 A CN 101162264A
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Abstract
The invention provides a remote checking and monitoring system for electrical energy measuring instrument, the system is composed of a local unit, a local computer, a remote computer; a local display unit and a remote communication unit are connected with a microprocessor unit; the local computer and the remote computer are connected with the remote communication unit; the secondary voltage of a voltage transformer and the secondary current of a current transformer are connected with a checked ammeter and a standard ammeter in the local unit at a same time. The invention has the advantages that: firstly, an omni-bearing test for the whole electrical energy measuring system can be realized; secondly, a real-time on-line test for the electrical energy measuring system is realized; thirdly, the invention is provided with a remote communication function; fourthly, the invention can be interfaced with electrical energy measuring instruments of different types and from different factories; fifthly, the problems existing in the electrical energy measuring work of electrical customers can be accurately grasped.
Description
Technical field
The present invention relates to a kind of online verification monitoring system that can remote monitoring electric power meter operation characteristic, be mainly used under the situation of electric power meter charging operation the sum of errors abnormal conditions of monitoring from the mutual inductor secondary side to the whole measurement loop of watt-hour meter in real time.
Background technology
Complete electric power meter comprises voltage transformer (VT), current transformer, secondary cable loop and electric energy meter.At present, adopt multiple checkout equipment to carry out respectively at the detection of electric power meter: the error characteristics of current transformer and voltage transformer (VT) mainly utilize all kinds of portable testers to carry out under power down mode, the error characteristics of watt-hour meter mainly utilize electric energy meter on-site calibrator to carry out under off working state, and the equal working voltage transformer secondary voltage drop of the test in secondary cable loop tester carries out.The shortcoming that above-mentioned method of testing exists, the one, sense cycle is long, can do nothing to help the operations staff and monitor the actual working state of electric power meter in real time, the 2nd, can not fault and the misoperation situation that measurement loop occurs be detected in real time, influence the timely processing of fault, also can't realize afterwards remedying of electric weight.
Summary of the invention
The objective of the invention is shortcoming single at present electric power meter detection means, that the calibration interval are long, provide a kind of and can implement comprehensive on-line monitoring, and possess the verification monitoring system of remote communicating function the duty of electric power meter.
Design proposal of the present invention:
Watthour meter remote verification monitoring system, by local unit 14, computing machine 12, remote computer 13 are formed on the spot, it is characterized in that: local unit 14 comprises internal standard watt-hour meter 6, microprocessor unit 8, isolating transformer 9, display unit 10, telecommunication unit 11 on the spot; Display unit 10 and telecommunication unit 11 link with microprocessor unit 8 on the spot, computing machine 12 and remote computer 13 link with telecommunication unit 11 on the spot, and the secondary side current of the secondary side voltage and current mutual inductor 1 of voltage transformer (VT) 2 inserts the reference kilowatthourmeter 6 of tested watt-hour meter 7 and local unit 14 inside simultaneously.
The microprocessor unit 8 of local unit 14 inside can receive the pulsed power signal of tested watt-hour meter 7 and 6 outputs of internal standard watt-hour meter, adopts relative method to calculate the error in dipping of tested watt-hour meter 7; When tested watt-hour meter 7 errors surpassed setting value, local unit 14 can be reported to the police by telecommunication unit 11; Microprocessor unit 8 can be gathered the voltage at voltage transformer (VT) 2 Secondary Winding lead-out terminals 3 and watt-hour meter input terminal 5 two ends simultaneously, and calculates the voltage landing of voltage transformer (VT) 2 secondary circuits; Microprocessor unit 8 adopts the high-frequency signal injection method to measure the admittance value of current transformer 1 whole secondary circuit, and test result and historical data are compared, and can detect fault and abnormality that current transformer 1 secondary circuit occurs; Computing machine on the spot 12 and remote computer 13 that professional software is installed can be by the message exchange of data communication realization with local unit 14.
The present invention has following beneficial effect:
The one, can realize comprehensive detection to the whole electric energy metered system that comprises current transformer, voltage transformer (VT), secondary cable circuit and watt-hour meter, more comprehensive to the Performance Evaluation of electric power meter, reliable; The 2nd, realized the real-time online of electric power meter is detected, avoided the deficiency that the calibration interval are long, can't in time find electric power meter fault and abnormal operating condition; The 3rd, possess remote communicating function, can in time notify the maintainer for fault and abnormal operating condition that electric power meter occurs, help reducing trouble duration, avoid the fault dispute, guarantee the justice of electric energy metrical and just better; The 4th, can with the electric power meter interface of any producer and model, have extensive applicability; The 5th, can accurately grasp the problem that power customer exists in electric energy metrical work.
Description of drawings
Fig. 1 is a principle schematic of the present invention.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
See also Fig. 1.Watthour meter remote verification monitoring system is by local unit 14, computing machine 12 and remote computer 13 are formed on the spot, and wherein local unit 14 comprises internal standard watt-hour meter 6, microprocessor unit 8, isolating transformer 9, display unit 10, telecommunication unit 11 on the spot; The secondary side current of the secondary side voltage and current mutual inductor 1 of voltage transformer (VT) 2 inserts the reference kilowatthourmeter 6 and the tested watt-hour meter 7 of local unit 14 inside simultaneously; The output pulses of the microprocessor unit 8 of local unit 14 inside acceptance criteria watt-hour meter 6 and 7 outputs of tested watt-hour meter simultaneously, and calculate the error in dipping of tested watt-hour meter 7; Microprocessor unit 8 is the secondary side terminal 3 of measuring voltage mutual inductor 2 and the voltage at electric power meter input terminal 5 two ends simultaneously, calculates the voltage landing of voltage transformer secondary cable line 4 then; Microprocessor unit 8 injects the AC signal of certain frequency by isolating transformer 9 to the secondary circuit of current transformer, and measures the voltage of injection side, can calculate the admittance value of secondary loop of mutual inductor; When microprocessing unit 8 detects the secondary circuit admittance of error in dipping, the voltage transformer (VT) 2 secondary circuit voltages landing of tested watt-hour meter 7 or current transformer 1 when unusual, can be by telecommunication unit 11 to computing machine 12 or remote computer 13 send warning information on the spot; Computing machine 12 or remote computer 13 receive alarm and the metrical information that local unit 14 sends on the spot, are input to inner database then and manage, and support the printing of data sheet.Operating personnel can be by computing machine 12 or the remote computer 13 long-range working methods that local unit 14 is set on the spot.
Claims (6)
1. Watthour meter remote verification monitoring system, by local unit (14), computing machine (1 2) and remote computer (13) are formed on the spot, it is characterized in that: local unit (14) comprises internal standard watt-hour meter (6), microprocessor unit (8), isolating transformer (9), display unit (10), telecommunication unit (11) on the spot; Display unit (10) and telecommunication unit (11) link with microprocessor unit (8) on the spot, computing machine (12) and remote computer (13) link with telecommunication unit (11) on the spot, and the secondary side current of the secondary side voltage and current mutual inductor (1) of voltage transformer (VT) (2) inserts tested watt-hour meter (7) and the inner reference kilowatthourmeter (6) of local unit (14) simultaneously.
2. Watthour meter remote verification monitoring system according to claim 1, it is characterized in that: the inner microprocessor unit (8) of described local unit (14) can receive the pulsed power signal of tested watt-hour meter (7) and internal standard watt-hour meter (6) output, adopts relative method to calculate the error in dipping of tested watt-hour meter (7).
3. Watthour meter remote verification monitoring system according to claim 1 is characterized in that: when tested watt-hour meter (7) error surpassed setting value, local unit (14) can be reported to the police by telecommunication unit (11).
4. Watthour meter remote verification monitoring system according to claim 1, it is characterized in that: described microprocessor unit (8) can be gathered the voltage at voltage transformer (VT) (2) Secondary Winding lead-out terminal (3) and watt-hour meter input terminal (5) two ends simultaneously, and calculates the voltage landing of voltage transformer (VT) (2) secondary circuit.
5. Watthour meter remote verification monitoring system according to claim 1, it is characterized in that: described microprocessor unit (8) adopts the high-frequency signal injection method to measure the admittance value of the whole secondary circuit of current transformer (1), and test result and historical data compared, can detect fault and abnormality that current transformer (1) secondary circuit occurs.
6. Watthour meter remote verification monitoring system according to claim 1, it is characterized in that: described computing machine on the spot (12) and remote computer (13) are equipped with professional software, can be by the message exchange of data communication realization with local unit (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101171366A CN101162264A (en) | 2006-10-13 | 2006-10-13 | Watthour meter remote verify monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101171366A CN101162264A (en) | 2006-10-13 | 2006-10-13 | Watthour meter remote verify monitoring system |
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| CN101162264A true CN101162264A (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006101171366A Pending CN101162264A (en) | 2006-10-13 | 2006-10-13 | Watthour meter remote verify monitoring system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726652B (en) * | 2009-11-26 | 2011-10-19 | 深圳市双合电脑系统股份有限公司 | Method for sampling secondary loop in power system with optimized measurement accuracy |
| CN102387191A (en) * | 2010-09-03 | 2012-03-21 | Ls产电株式会社 | System for remotely managing electric vehicle |
| CN101498775B (en) * | 2009-03-17 | 2012-07-04 | 江苏省电力试验研究院有限公司 | Calibration apparatus for gate energy meter of digitized transforming plant |
| CN102928808A (en) * | 2012-10-29 | 2013-02-13 | 江苏省电力公司常州供电公司 | Power consumer on-site electric energy meter fault remote judging method |
| CN101923149B (en) * | 2009-06-12 | 2013-03-13 | 郑州三晖电气股份有限公司 | Positioning and wiring mechanism of electric energy meter |
| CN103399185A (en) * | 2013-07-19 | 2013-11-20 | 国家电网公司 | Computer system for preventing electricity stealing based on smart electric meters |
| CN103513221A (en) * | 2013-10-14 | 2014-01-15 | 国家电网公司 | Secondary voltage drop/secondary load on-line monitoring device and system and monitoring method thereof |
| CN105182277A (en) * | 2015-10-20 | 2015-12-23 | 广州磐通电气技术有限公司 | Electric energy meter connection check system |
| CN106872928A (en) * | 2017-01-19 | 2017-06-20 | 宁波三星医疗电气股份有限公司 | The electric energy meter and self checking method of a kind of electric energy self checking |
| CN109828861A (en) * | 2018-12-13 | 2019-05-31 | 国网江苏省电力有限公司电力科学研究院 | A kind of electric energy measurement data check system and method towards Electricity retail market |
| CN110988783A (en) * | 2019-12-27 | 2020-04-10 | 广东电科院能源技术有限责任公司 | Intelligent electric meter precision online monitoring method and device |
| CN111896910A (en) * | 2020-07-30 | 2020-11-06 | 贵州电网有限责任公司 | Pluggable metering data comparison method and system based on metering equipment |
| CN113009405A (en) * | 2021-01-28 | 2021-06-22 | 国网河北省电力有限公司沧州供电分公司 | Three-phase power detection system and electronic equipment |
-
2006
- 2006-10-13 CN CNA2006101171366A patent/CN101162264A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498775B (en) * | 2009-03-17 | 2012-07-04 | 江苏省电力试验研究院有限公司 | Calibration apparatus for gate energy meter of digitized transforming plant |
| CN101923149B (en) * | 2009-06-12 | 2013-03-13 | 郑州三晖电气股份有限公司 | Positioning and wiring mechanism of electric energy meter |
| CN101726652B (en) * | 2009-11-26 | 2011-10-19 | 深圳市双合电脑系统股份有限公司 | Method for sampling secondary loop in power system with optimized measurement accuracy |
| US9100420B2 (en) | 2010-09-03 | 2015-08-04 | Lsis Co., Ltd. | System for remotely managing electric vehicle |
| CN102387191A (en) * | 2010-09-03 | 2012-03-21 | Ls产电株式会社 | System for remotely managing electric vehicle |
| CN102387191B (en) * | 2010-09-03 | 2015-06-03 | Ls产电株式会社 | System for remotely managing electric vehicle |
| CN102928808A (en) * | 2012-10-29 | 2013-02-13 | 江苏省电力公司常州供电公司 | Power consumer on-site electric energy meter fault remote judging method |
| CN103399185A (en) * | 2013-07-19 | 2013-11-20 | 国家电网公司 | Computer system for preventing electricity stealing based on smart electric meters |
| CN103513221B (en) * | 2013-10-14 | 2016-06-29 | 国家电网公司 | Secondary voltage drop/secondary load on-Line Monitor Device and system and monitoring method thereof |
| CN103513221A (en) * | 2013-10-14 | 2014-01-15 | 国家电网公司 | Secondary voltage drop/secondary load on-line monitoring device and system and monitoring method thereof |
| CN105182277A (en) * | 2015-10-20 | 2015-12-23 | 广州磐通电气技术有限公司 | Electric energy meter connection check system |
| CN106872928A (en) * | 2017-01-19 | 2017-06-20 | 宁波三星医疗电气股份有限公司 | The electric energy meter and self checking method of a kind of electric energy self checking |
| CN106872928B (en) * | 2017-01-19 | 2019-04-12 | 宁波三星医疗电气股份有限公司 | A kind of electric energy meter and self checking method of electric energy self checking |
| CN109828861A (en) * | 2018-12-13 | 2019-05-31 | 国网江苏省电力有限公司电力科学研究院 | A kind of electric energy measurement data check system and method towards Electricity retail market |
| CN109828861B (en) * | 2018-12-13 | 2019-12-06 | 国网江苏省电力有限公司电力科学研究院 | electric energy metering data verification system and method for electric power retail market |
| CN110988783A (en) * | 2019-12-27 | 2020-04-10 | 广东电科院能源技术有限责任公司 | Intelligent electric meter precision online monitoring method and device |
| CN111896910A (en) * | 2020-07-30 | 2020-11-06 | 贵州电网有限责任公司 | Pluggable metering data comparison method and system based on metering equipment |
| CN113009405A (en) * | 2021-01-28 | 2021-06-22 | 国网河北省电力有限公司沧州供电分公司 | Three-phase power detection system and electronic equipment |
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