CN203465367U - Accurate transformer loss measuring device - Google Patents
Accurate transformer loss measuring device Download PDFInfo
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- CN203465367U CN203465367U CN201320547615.7U CN201320547615U CN203465367U CN 203465367 U CN203465367 U CN 203465367U CN 201320547615 U CN201320547615 U CN 201320547615U CN 203465367 U CN203465367 U CN 203465367U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims description 52
- 230000005540 biological transmission Effects 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses an accurate transformer loss measuring device. The accurate transformer loss measuring device comprises a remote main station (1), wherein the remote main station (1) is connected with a distribution transform monitoring terminal (2) in a distribution station area through GPRS, the distribution transform monitoring terminal (2) is connected with a high voltage electric energy meter (4) in a micro-power wireless mode, and the distribution transform monitoring terminal (2) is connected with a low voltage electric energy meter (3) through RS485. The accurate transformer loss measuring device can accurately measure transformer loss in the station area in real time and is safe and durable.
Description
Technical field:
The utility model relates to a kind of substation transformer loss on transmission measurement mechanism, and especially a kind of device that can carry out continuously transformer loss on transmission, accurately measure, belongs to intelligent grid Distribution Automation Technology field.
Background technology:
Distribution transformer monitoring device generally can be monitored the data such as the voltage, electric current, power, power factor, frequency, harmonic wave, oil temperature of transformer, and some can also realize automatic control reactive-load compensation.Yet, all the time, for the measurement of platform district this basic parameter of transformer own loss, but fail to realize well in monitoring system of distribution transformer.The method of estimation is often still passed through in calculating at real work Zhong，Tai district loss on transmission, is difficult to accomplish accurately.
In order to realize the measurement to loss on transmission, some district has adopted traditional two table Comparison Methods, at high voltage side of transformer and low-pressure side, two ammeters is installed respectively, monthly the electric weight difference of two tables of complicate statistics.Because high side voltage is higher, be generally 10kV, electric current and can reach hundreds of amperes, common table meter cannot directly measure, and need to adopt the mode of voltage transformer (VT)+current transformer, by the scaled certain multiplying power of voltage and current, then accesses common electric energy meter metering.Adopt and have in this way following drawback:
1, high voltage potential transformer summation current transformer can be introduced second order error;
2, current transformer measures range is inadequate, can cause electrical energy meter electricity traffic specification and current transformer ratio unreasonable, causes metering when underload or overload to be forbidden;
3, the mutual inductor permanance that lay open air is poor, easily aging, and actual life was less than 3 years conventionally;
4, in security, be difficult to guarantee, exist the fault of electromagnetic resonance to occur;
5, mutual inductor and electric energy meter can only be distinguished verification, and whole error in dipping can not be unified to define;
6, monthly the method for the two table of comparison electric weight can not realize real-time measurement, can not reflect the true loss of transformer under different load level.
Utility model content:
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art and provides a kind of energy real-time, accurate test desk district's transformer loss, and safe, durable loss on transmission device for accurately measuring.
The purpose of this utility model can reach by following measure: a kind of loss on transmission device for accurately measuring, it is characterized in that it comprises distant place main website, distant place main website connects the distribution transformer monitoring terminal in power distribution station by GPRS, distribution transformer monitoring terminal is by micropower wireless connections high-voltage electric energy meter, and distribution transformer monitoring terminal connects low-voltage electric energy table by RS485.
In order further to realize the purpose of this utility model, described high-voltage electric energy meter comprises primary processor MCU, large power supply, contactless communication interface, electric energy metrical unit, voltage sampling circuit, current collection circuit, GPRS communication module and local radio communication module, large power supply connects primary processor MCU, contactless communication interface, electric energy metrical unit, electric energy metrical unit is connected with voltage sampling circuit, current collection circuit and MCU, contactless communication interface connection primary processor MCU and GPRS communication module, local radio communication module;
Described large power supply is transformed into required operating voltage from the direct power taking of high-tension line, for other module work;
Described voltage sampling circuit, current collection circuit complete high-voltage signal and sample and deliver to electric energy metrical unit and carry out signal processing;
Described MCU carries out bidirectional data exchange as primary processor and electric energy metrical unit, electric energy measurement data is stored and is analyzed, and by contactless communication interface, data are met to GPRS communication module and local radio communication module is transmitted;
Described contactless communication interface has adopted optical communication technique, and GPRS communication module and local radio communication module and high pressure gauge body are realized to electrical isolation.
The utility model can produce following good effect compared with the prior art: the utility model can be realized real-time, the precise monitoring to loss on transmission.Utilize this system to realize:
The accurate measurement of 1 ,Tai district transformer loss on transmission, has overcome the second order error that high-voltage mutual inductor brings, range and has not mated the problems such as the metering causing is inaccurate, poor stability;
The automatic measurement of 2 ,Tai district transformer loss on transmissions, can remove the workload of complicate statistics and the chance of makeing mistakes from, and monitored density and real-time also increase greatly;
3, can accurately measure the loss situation of substation transformer under different load level, different operating mode, can be assessment, select transformer and appropriate design platform district that important evidence is provided.
Accompanying drawing explanation:
Fig. 1 is that system of the present utility model forms schematic diagram;
Fig. 2 is the high-voltage electric energy meter schematic diagram of Fig. 1.
Embodiment: embodiment of the present utility model is elaborated below in conjunction with accompanying drawing:
Embodiment: a kind of loss on transmission device for accurately measuring (referring to Fig. 1) ，Ta You distant place main website 1, distribution transformer monitoring terminal 2, low-voltage electric energy table 3, high-voltage electric energy meter 4 form.
High-voltage electric energy meter 4 is arranged on high voltage side of transformer, can directly measure 10kV high-tension line, does not use voltage transformer (VT) summation current transformer, and has micro power radio communication interface; Distribution transformer monitoring terminal 2 and low-voltage electric energy table 3 are arranged on step down side, distribution transformer monitoring terminal 2 has the functions such as local communication, data acquisition and storage, distant place communication, distribution transformer terminals 2 connects high-voltage electric energy meter 4 by 433MHz micropower wireless signal, periodically gather the data of high-voltage electric energy meter 4, can avoid like this high-pressure side and low-pressure side to be directly electrically connected across transformer, meet safety requirements and management regulation requirement; Distribution transformer monitoring terminal 2 connects low-voltage electric energy table 3 by RS485 mode, periodically gathers the data of low-voltage electric energy table 3, and stube cable is selected Shielded Twisted Pair; Distribution transformer monitoring terminal 2 connects distant place main website 1 by mobile GPRS signal, and distribution transformer monitoring terminal 2 is done client, and server is done by distant place main website 1, connects and adopts the TCP ray mode of being everlasting.Distant place main website 1 is installed in power department telemechanical machine room, multiple servers and network, consists of.Distant place main website 1 can communicate by letter with many distribution transformer monitoring terminals 2, automatically gathers the data of distribution transformer monitoring terminal 2 by the task of customization, completes automatic calculating and data analysis simultaneously, and carries out data issue by WEB server.
High-voltage electric energy meter 4(is referring to Fig. 2), by MCU 4-1, large power supply 4-2, contactless communication interface 4-3, electric energy metrical unit 4-4, voltage sampling circuit 4-5, current collection circuit 4-6, GPRS communication module 4-7 and local radio communication module 4-8 etc., partly formed.Large power supply 4-2 connects MCU 4-1, contactless communication interface 4-3, electric energy metrical unit 4-4, and large power supply 4-2 is transformed into required operating voltage from the direct power taking of high-tension line, for other module work; Voltage sampling circuit 4-5, current collection circuit 4-6 connect electric energy metrical unit 4-4, and sampled signal is handed over to its processing; Electric energy metrical unit 4-4 is connected with MCU 4-1, completes high-voltage signal and samples and deliver to electric energy metrical unit 4-4 and carry out signal processing and electric energy metrical.Primary processor MCU 4-1 is connected with contactless communication interface 4-3 with electric energy metrical unit 4-4, contactless communication interface 4-3 connects MCU 4-1 and GPRS communication module 4-7, local radio communication module 4-8, MCU4-1 carries out bidirectional data exchange as primary processor and electric energy metrical unit 4-4, electric energy measurement data is stored and analyzed, and by contactless communication interface 4-3, data are met to GPRS communication module 4-7 and local radio communication module 4-8 transmits; Contactless communication interface 4-3 has adopted optical communication technique, GPRS communication module 4-7 and local radio communication module 4-8 and high pressure gauge body can be realized to electrical isolation, safeguards or change communication module to guarantee not have a power failure in high-pressure side in the situation that; GPRS communication module 4-7 and local radio communication module 4-8 can select to install as required, wherein local radio communication module 4-8 can carry out radio communication with other collecting device in short distance, and GPRS communication module 4-7 can directly upload the data to distant place main website.
Claims (2)
1. a loss on transmission device for accurately measuring, it is characterized in that it comprises distant place main website (1), distant place main website (1) connects the distribution transformer monitoring terminal (2) in power distribution station by GPRS, distribution transformer monitoring terminal (2) is by micropower wireless connections high-voltage electric energy meter (4), and distribution transformer monitoring terminal (2) connects low-voltage electric energy table (3) by RS485.
2. a kind of loss on transmission device for accurately measuring according to claim 1, it is characterized in that described high-voltage electric energy meter (4) comprises primary processor MCU(4-1), large power supply (4-2), contactless communication interface (4-3), electric energy metrical unit (4-4), voltage sampling circuit (4-5), current collection circuit (4-6), GPRS communication module (4-7) and local radio communication module (4-8), large power supply (4-2) connects primary processor MCU(4-1), contactless communication interface (4-3), electric energy metrical unit (4-4), electric energy metrical unit (4-4) and voltage sampling circuit (4-5), current collection circuit (4-6) and MCU(4-1) connection, contactless communication interface (4-3) connects primary processor MCU(4-1) and GPRS communication module (4-7), local radio communication module (4-8),
Described large power supply (4-2) is transformed into required operating voltage from the direct power taking of high-tension line, for other module work;
Described voltage sampling circuit (4-5), current collection circuit (4-6) complete high-voltage signal and sample and deliver to electric energy metrical unit (4-4) and carry out signal processing;
Described MCU(4-1) as primary processor and electric energy metrical unit (4-4), carry out bidirectional data exchange, electric energy measurement data is stored and analyzed, and by contactless communication interface (4-3), data are met to GPRS communication module (4-7) and local radio communication module (4-8) is transmitted;
Described contactless communication interface (4-3) has adopted optical communication technique, and GPRS communication module (4-7) and local radio communication module (4-8) are realized to electrical isolation with high pressure gauge body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320547615.7U CN203465367U (en) | 2013-09-05 | 2013-09-05 | Accurate transformer loss measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320547615.7U CN203465367U (en) | 2013-09-05 | 2013-09-05 | Accurate transformer loss measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN203465367U true CN203465367U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320547615.7U Expired - Fee Related CN203465367U (en) | 2013-09-05 | 2013-09-05 | Accurate transformer loss measuring device |
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| CN (1) | CN203465367U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439616A (en) * | 2013-09-05 | 2013-12-11 | 国家电网公司 | Transformation-loss precision-measurement device |
| CN105717387A (en) * | 2015-11-27 | 2016-06-29 | 国网河南宜阳县供电公司 | Test apparatus and method for online measurement of transformer loss |
-
2013
- 2013-09-05 CN CN201320547615.7U patent/CN203465367U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439616A (en) * | 2013-09-05 | 2013-12-11 | 国家电网公司 | Transformation-loss precision-measurement device |
| CN105717387A (en) * | 2015-11-27 | 2016-06-29 | 国网河南宜阳县供电公司 | Test apparatus and method for online measurement of transformer loss |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20150905 |
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| EXPY | Termination of patent right or utility model |