CN201207081Y - Signal detection circuit for electric energy metering error remote on-line detection system - Google Patents
Signal detection circuit for electric energy metering error remote on-line detection system Download PDFInfo
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- CN201207081Y CN201207081Y CNU2008200320847U CN200820032084U CN201207081Y CN 201207081 Y CN201207081 Y CN 201207081Y CN U2008200320847 U CNU2008200320847 U CN U2008200320847U CN 200820032084 U CN200820032084 U CN 200820032084U CN 201207081 Y CN201207081 Y CN 201207081Y
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- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000006698 induction Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 238000012360 testing method Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
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Abstract
Disclosed is a signal detection circuit for an electric energy metering error remote online detecting system. The signal detection circuit is characterized in that a site standard electric energy meter is provided, and the electrical signals of monitored electric energy meters include current signals, voltage signals, pulse signals and communication signals, which are imported into the standard electric energy meter at real time through corresponding switching channels. The signal detection circuit is used to match with the electric energy metering error remote online detecting system for remote online detection to ensure power grid electric energy metering accuracy, to improve error measuring efficiency of the metering device and to ensure real-time error monitoring accuracy and reliability of the metering device and settlement accuracy and reliability of the electric energy meter.
Description
Technical field
The utility model relates to the signal deteching circuit in the error detecting system that is applied in electric power meter.It is a kind of for realizing the signal deteching circuit of the electric power meter error that remote online detects more specifically to say so.
Background technology
China's electric power system all is to adopt artificial mode for the field-checking of electrical network electric power meter in most cases at present.This mode especially when verification is in the measuring apparatus of outlying mountain area, job costs height, big, the inefficiency of workload.
At present, the set of equipments that is used for electric energy meter field error test both at home and abroad seldom and comparatively simple, majority all is to connect on-site calibrator at the scene, the manual observation instrument obtains detecting data, this form not only work efficiency is low, and measuring apparatus can't be carried out comprehensive on-line testing and fault judgement in operational process.
Current, the justice of electric energy metrical, just attention and the concern that more and more is subjected to governments at all levels, quality supervision department and vast power customer are guaranteed electrical network electric energy metrical accuracy, improve measuring apparatus error measure work efficiency, are guaranteed that the measuring apparatus error is monitored in real time, the trade settlement electric energy meter all is accurately to be prerequisite in real time with the electric power meter error-detecting accurately and reliably.But, also do not have to satisfy the electric power meter error remote online detection system of related request so far.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of electric energy metering error remote online detection system signal deteching circuit for cooperating remote online to detect is provided, with guarantee electrical network electric energy metrical accuracy, improve measuring apparatus error measure work efficiency, guarantee that the measuring apparatus error is monitored in real time, the trade settlement electric energy meter accurately and reliably.
The utility model is dealt with problems and is adopted following technical scheme:
The design feature of the utility model electric energy metering error remote online detection system signal deteching circuit is that on-the-spot standard electric energy meter is set, and the electric signal of each monitored electric energy meter comprises that current signal, voltage signal, pulse signal and communication signal are respectively in real time by corresponding switching channel introducing standard electric energy meter.
The design feature of the utility model electric energy metering error remote online detection system signal deteching circuit also is:
Tested electric energy meter three-phase current obtains the three-phase induction electric current through current transformer CT mutual inductance, and is connected in series with standard electric energy meter by switch JK1-JK6 in the switching channel; A phase voltage U
A, B phase voltage U
B, C phase voltage U
C, zero line U
NRespectively by insurance F1, F2, F3 and F4, and in switching channel switch JK7-JK10 and standard electric energy meter and connect, meritorious pulse GD1+, GD1-with idle pulse GD2+, GD2-be connected with standard electric energy meter pulse mouth by switch JK14, JK15 in the switching channel and switch JK16 respectively; Switch JK11, JK12 in the switching channel, JK13 respectively at A mutually, B mutually and the loop parallel connection of C phase current.
The design feature of the utility model electric energy metering error remote online detection system signal deteching circuit is that also each switch JK1-JK1 is by setting the sequential break-make in the described switching channel.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the utility model signal deteching circuit cooperates electric power meter error remote online detection system to can be implemented in line verification electric energy meter error, detect electric current and voltage parameter, it is scarce to accomplish that real-time detection in time disappears, with its work that substitutes artificial field-checking electric energy meter, can improve gage work efficient greatly.
2, the switching channel technology of the utility model signal deteching circuit employing can guarantee metering secondary is pursued measurement mutually, guarantees measuring accuracy simultaneously.
3, the switch that adopts of the utility model signal deteching circuit is by mutually closed principle of work, when having guaranteed to measure certain phase current loop, and other phase current loops phenomenon of can not opening a way, assurance equipment and personal safety.
Description of drawings
Fig. 1 is the utility model circuit theory diagrams.
Fig. 2 is applied in situ part structured flowchart in the electric power meter error remote online detection system for the utility model.
Fig. 3 is applied in remote service end structure block diagram in the electric power meter error remote online detection system for the utility model.
Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings:
Embodiment
Referring to Fig. 1, the electric energy meter that sets up standard at the detection scene, tested electric energy meter three-phase current obtains the three-phase induction electric current through current transformer CT mutual inductance, and is connected in series with standard electric energy meter by switch JK1-JK6 in the switching channel; A phase voltage U
A, B phase voltage U
B, C phase voltage U
c, zero line U
NRespectively by insurance F1, F2, F3 and F4, and in switching channel switch JK7-JK10 and standard electric energy meter and connect, meritorious pulse GD1+, GD1-with idle pulse GD2+, GD2-be connected with standard electric energy meter pulse mouth with JK16 by switch JK14, JK15 in the switching channel respectively; Switch JK11, JK12 in the switching channel, JK13 respectively at A mutually, B mutually and the loop parallel connection of C phase current.Switching channel is as former, and wherein each switch JK1-JK16 is by setting the sequential break-make.Such as: when tested electric energy meter A phase current was measured, switch JK1, JK2 closure, switch JK11 disconnected; B phase and C switch JK3, JK4 disconnection mutually, switch JK12 closure; Voltage and pulse are in like manner worked, and measure with standard electric energy meter.
As electric power meter error remote online detection system, corresponding setting has two parts, i.e. situ part and remote portion, and monitoring range comprises electric energy meter, current transformer, voltage transformer (VT) and whole metering secondary.
Shown in Figure 2, at the scene in the part, the electric signal of each monitored electric energy meter comprises that voltage, electric current, pulse signal and communication signal etc. are incorporated into respectively in each respective channel commutation circuit, chosen electric energy meter is sent on the on-the-spot industrial computer by network by long-range customer side, or come the control channel controller by the on-the-spot industrial computer of on-the-spot direct control, channel controller switches to this road electric signal on the overall channel automatically according to the instruction that on-the-spot industrial computer transmits, and other then can not pass through the overall channel circuit.Chosen passage electric signal is linked into standard scale and measures.Communication function by standard scale is required electric parameter, comprises that voltage, electric current, phase place, frequency, meritorious, reactive power and error etc. upload to on-the-spot industrial computer.The data of on-the-spot industrial computer collection are transferred to the main website of Subscriber Unit information center of remote service end after treatment by network LAN, PSTN, RS485/RS232, GPRS etc.
Shown in Figure 3, system detects automatically in remote portion, and further realizes that by network electric energy error detects the transmission of data.Main website of Subscriber Unit information center is a Subscriber Unit information center.
The utility model is that brand-new mode of operation has been created in the error-detecting of electric power meter, made things convenient for the scene of unmanned electric substation, gate energy meter to detect, the difficult problems such as field-checking cost height of outlying mountain area's measuring apparatus have been solved, greatly improved work efficiency, alleviated labour intensity, made the electric energy metrical field-checking realize robotization.Simultaneously, system guarantees can the surveying in real time of electric power metering device, controlled in real time, detect data by network with data transmission to main website, for relevant departments' reference, improved work efficiency, guarantee the open, just, fair of trade.
Claims (3)
1, electric energy metering error remote online detection system signal deteching circuit, it is characterized in that being provided with on-the-spot standard electric energy meter, the electric signal of each monitored electric energy meter comprises that current signal, voltage signal, pulse signal and communication signal are respectively in real time by corresponding switching channel introducing standard electric energy meter.
2, electric energy metering error remote online detection system signal deteching circuit according to claim 1, it is characterized in that tested electric energy meter three-phase current obtains the three-phase induction electric current through current transformer CT mutual inductance, and be connected in series with standard electric energy meter by switch JK1-JK6 in the switching channel; A phase voltage U
A, B phase voltage U
B, C phase voltage U
C, zero line U
NRespectively by insurance F1, F2, F3 and F4, and in switching channel switch JK7-JK10 and standard electric energy meter and connect, meritorious pulse GD1+, GD1-with idle pulse GD2+, GD2-be connected with standard electric energy meter pulse mouth by switch JK14, JK15 in the switching channel and switch JK16 respectively; Switch JK11, JK12 in the switching channel, JK13 respectively at A mutually, B mutually and the loop parallel connection of C phase current.
3, electric energy metering error remote online detection system signal deteching circuit according to claim 2 is characterized in that each switch JK1-JK16 in the described switching channel is by setting the sequential break-make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200320847U CN201207081Y (en) | 2008-03-14 | 2008-03-14 | Signal detection circuit for electric energy metering error remote on-line detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200320847U CN201207081Y (en) | 2008-03-14 | 2008-03-14 | Signal detection circuit for electric energy metering error remote on-line detection system |
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| Publication Number | Publication Date |
|---|---|
| CN201207081Y true CN201207081Y (en) | 2009-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200320847U Expired - Fee Related CN201207081Y (en) | 2008-03-14 | 2008-03-14 | Signal detection circuit for electric energy metering error remote on-line detection system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950008A (en) * | 2010-10-11 | 2011-01-19 | 威胜集团有限公司 | Method for remotely and dynamically monitoring electric energy metering load |
| CN101776740B (en) * | 2010-01-19 | 2012-12-26 | 云南电网公司 | Electric energy metering automation simulation laboratory |
| CN103149547A (en) * | 2012-12-23 | 2013-06-12 | 北京智网创能科技有限公司 | Transformer substation measurement return circuit online monitoring system and state maintenance method |
| CN103630868A (en) * | 2013-09-23 | 2014-03-12 | 中国电子科技集团公司第二十七研究所 | Remote substation electrical energy metering information detection system |
| CN104614700A (en) * | 2012-10-29 | 2015-05-13 | 江苏省电力公司常州供电公司 | Remote monitoring and diagnosing method for electric energy metering device with good real-time performance |
| CN107037390A (en) * | 2017-02-10 | 2017-08-11 | 国网浙江台州市黄岩区供电公司 | Impact load is to electric energy metering error remote monitoring of customer end |
| CN115774233A (en) * | 2023-02-13 | 2023-03-10 | 武汉华瑞智能电气技术有限公司 | Method and device for judging metering performance of station-end electric energy metering device on line |
-
2008
- 2008-03-14 CN CNU2008200320847U patent/CN201207081Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776740B (en) * | 2010-01-19 | 2012-12-26 | 云南电网公司 | Electric energy metering automation simulation laboratory |
| CN101950008A (en) * | 2010-10-11 | 2011-01-19 | 威胜集团有限公司 | Method for remotely and dynamically monitoring electric energy metering load |
| CN104614700A (en) * | 2012-10-29 | 2015-05-13 | 江苏省电力公司常州供电公司 | Remote monitoring and diagnosing method for electric energy metering device with good real-time performance |
| CN103149547A (en) * | 2012-12-23 | 2013-06-12 | 北京智网创能科技有限公司 | Transformer substation measurement return circuit online monitoring system and state maintenance method |
| CN103149547B (en) * | 2012-12-23 | 2016-04-27 | 北京智网创能科技有限公司 | Transformer substation measurement return circuit on-line monitoring system and state maintenance method |
| CN103630868A (en) * | 2013-09-23 | 2014-03-12 | 中国电子科技集团公司第二十七研究所 | Remote substation electrical energy metering information detection system |
| CN107037390A (en) * | 2017-02-10 | 2017-08-11 | 国网浙江台州市黄岩区供电公司 | Impact load is to electric energy metering error remote monitoring of customer end |
| CN115774233A (en) * | 2023-02-13 | 2023-03-10 | 武汉华瑞智能电气技术有限公司 | Method and device for judging metering performance of station-end electric energy metering device on line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130108 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130108 Address after: 237006 Anhui Province, Lu'an City People's Road No. 71 Patentee after: Anhui Electric Power Co.,Ltd. Liuan Power Supply Co., Ltd. Patentee after: State Grid Corporation of China Address before: 237006 Anhui Province, Lu'an City People's Road No. 71 Patentee before: Anhui Electric Power Co.,Ltd. Liuan Power Supply Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20170314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |