CN201522541U - Transformer substation electrical equipment on-line monitoring system - Google Patents
Transformer substation electrical equipment on-line monitoring system Download PDFInfo
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- CN201522541U CN201522541U CN2009200830609U CN200920083060U CN201522541U CN 201522541 U CN201522541 U CN 201522541U CN 2009200830609 U CN2009200830609 U CN 2009200830609U CN 200920083060 U CN200920083060 U CN 200920083060U CN 201522541 U CN201522541 U CN 201522541U
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Abstract
The utility model discloses a transformer substation electrical equipment on-line monitoring system which belongs to the field of power transmission and electrical technology and comprises a partial discharge sensor, a current sensor and a voltage sensor, wherein the primary side of the partial discharge sensor is connected with a transformer; the primary side of the current sensor is respectively connected with a transformer sleeve, a zinc oxide arrester, a current transformer and a voltage transformer; the primary side of the voltage sensor is connected with a bus voltage transformer; the partial discharge sensor, the current sensor and the output end of the current sensor are connected with a current signal channel switch; the current sensor, the voltage sensor and the output end of the voltage sensor are connected with a voltage signal channel switch; the output ends of the current signal channel switch and the voltage signal channel switch are connected with a programmable amplification, filtering and signal processing unit, and then is connected with an industrial control computer through a data acquisition card; and the industrial control computer is connected with a monitoring center computer through communication cables. The transformer substation electrical equipment on-line monitoring system is suitable for online monitoring of MOA, CT, PT, OY, CVT and other electrical equipment.
Description
Affiliated technical field
The utility model relates to the electrical equipment monitoring device, and especially the electrical equipment online monitoring device belongs to electric power transfer and technical field of electricity.
Background technology
At present, along with UHV (ultra-high voltage) and extra-high voltage electric transmission and transformation technology rapid development, net capacity is very big, broad covered area, if a certain electrical equipment breaks down, its influence and loss are quite surprising.Therefore, must carry out basic change, set up a kind of novel state maintenance system, carry out the transition to the foreseeability maintenance system gradually by the preventative maintenance system to existing preventative maintenance system.Require the electrical equipment online monitoring device to have the characteristics of high precision, high reliability.Existing pick-up unit can not satisfy above requirement.
The utility model content
In order to overcome the deficiency of existing electrical equipment online monitoring device, the utility model provides that a kind of to collect technology such as sensor, electronics and computing machine be the electrical equipment on-line detecting system of one.
The technical scheme that its technical matters that solves the utility model adopts is: electrical equipment online monitoring system of transformer station, comprise local discharge sensor 1, current sensor 2-5 and voltage sensor 6, the former limit of local discharge sensor 1 is connected with transformer 11, the former limit of current sensor 2-5 is connected with bushing shell for transformer 12, Zinc-Oxide Arrester 13, current transformer 14, voltage transformer (VT) 15 respectively, and the former limit of voltage sensor 6 is connected with bus-bar potential transformer 16; The output terminal of local discharge sensor 1, current sensor 2, current sensor 3 is connected with channel current signal switch 7; The output end voltage signalling channel switch 8 of current sensor 4, current sensor 5, voltage sensor 6 connects; The output terminal of channel current signal switch 7, voltage signal channel switch 8 is connected with program control amplification, filtering and signal processing unit 9; Be connected with industrial control computer 17 through data collecting card 10 again; Industrial control computer 17 connects with computing machine 18 companies of Surveillance center through telecommunication cable C.
The beneficial effects of the utility model are, data test is true, reliable, and good temp characteristic, the life-span is long, measuring accuracy is high, data are reliable and stable.Improved on-line monitoring system security, improved the stability of DATA REASONING.
Description of drawings
Fig. 1 is the utility model structured flowchart;
Fig. 2 is a current sensor circuit schematic diagram in the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Electrical equipment online monitoring system of transformer station, comprise local discharge sensor 1, current sensor 2-5 and voltage sensor 6, the former limit of local discharge sensor 1 is connected with transformer 11, the former limit of current sensor 2-5 is connected with bushing shell for transformer 12, Zinc-Oxide Arrester 13, current transformer 14, voltage transformer (VT) 15 respectively, and the former limit of voltage sensor 6 is connected with bus-bar potential transformer 16; The output terminal of local discharge sensor 1, current sensor 2, current sensor 3 is connected with channel current signal switch 7; The output end voltage signalling channel switch 8 of current sensor 4, current sensor 5, voltage sensor 6 connects; The output terminal of channel current signal switch 7, voltage signal channel switch 8 is connected with program control amplification, filtering and signal processing unit 9; Be connected with industrial control computer 17 through data collecting card 10 again; Industrial control computer 17 connects with computing machine 18 companies of Surveillance center through telecommunication cable C.
Current sensor 2-5 is a punching passive zero flux current sensor.Circuit theory such as Fig. 2.
Industrial control computer 17 is connected with printer 19.
Local discharge sensor 1 is installed on the ground wire of bushing shell for transformer end screen, neutral point and iron core; Current sensor 2 is installed on the ground wire of bushing shell for transformer, iron core, current sensor 3 is installed on the ground wire of Zinc-Oxide Arrester, and the input end of current sensor 4, current sensor 5 is connected with the inferior utmost point winding of current transformer 14, voltage transformer (VT) 15 respectively; Voltage sensor 6 input ends are connected with the inferior utmost point winding of bus-bar potential transformer (16).
During the leakage current of electrical equipments such as on-line monitoring MOA, CT, PT, OY, CVT, these electric currents all very little (even little) to microampere order, thereby obtaining of low current signal is a key of on-line monitoring technique, punching passive zero flux current sensor is a kind of high performance sensor, improved the on-line monitoring precision and the stability of monitoring in real time, operation is perfectly safe to network system from structure and principle this sensor simultaneously.Therefore, select for use punching passive zero flux current sensor as this on-line monitoring system current sensor.
The advantage of native system is:
A. system adopts Computer Control Technology, has good internetworking, reliability and intelligent degree.
B. the sampled signal of each equipment under test is independent transmission, the debugging and easy to maintenance, reliability is high.
C. electric current and voltage signal adopt the simultaneously mode of sampling, have effectively solved dielectric loss measurement accurately and the requirement of precision.
D. simultaneity factor has excellent Scalable Performance, only need increase corresponding monitored equipment according to the needs of system development and get final product, and its tissue is flexible, the utilization of resources is reasonable etc., provides dirigibility to the design and the selection of the network hardware and software.
E. have remote communications capability, communication modes can adopt the serial communication of telephone line or special use etc.
F. on the principle and structure of current sensor, the ground wire of current sensor and system equipment is to isolate mutually at physical level, directly be not electrically connected, thereby the reliable ground that has fully guaranteed system equipment connecting, is safe and reliable to the operation of system.All signal processing units and data acquisition unit all have corresponding overcurrent, overvoltage protection.
G. all digital circuits have all adopted photoelectric isolation technology.
Claims (3)
1. electrical equipment online monitoring system of transformer station, comprise local discharge sensor (1), current sensor (2) one current sensors (5) and voltage sensor (6), it is characterized in that, the former limit of local discharge sensor (1) is connected with transformer (11), the former limit of current sensor (2)-current sensor (5) is connected with bushing shell for transformer (12), Zinc-Oxide Arrester (13), current transformer (14), voltage transformer (VT) (15) respectively, and the former edges generating line voltage transformer (VT) (16) of voltage sensor (6) connects; The output terminal of local discharge sensor (1), current sensor (2), current sensor (3) is connected with channel current signal switch (7); The output end voltage signalling channel switch (8) of current sensor (4), current sensor (5), voltage sensor (6) connects; The output terminal of channel current signal switch (7), voltage signal channel switch (8) is connected with program control amplification, filtering and signal processing unit (9); Connect with industrial control computer (17) through data collecting card (10) again; Industrial control computer (17) connects with Surveillance center's computing machine (18) through telecommunication cable (C).
2. electrical equipment online monitoring system of transformer station according to claim 1 is characterized in that, described current sensor (2)-(5) are punching passive zero flux current sensor.
3. electrical equipment online monitoring system of transformer station according to claim 1 is characterized in that, described industrial control computer (17) is connected with printer (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200830609U CN201522541U (en) | 2009-08-03 | 2009-08-03 | Transformer substation electrical equipment on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200830609U CN201522541U (en) | 2009-08-03 | 2009-08-03 | Transformer substation electrical equipment on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201522541U true CN201522541U (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200830609U Expired - Fee Related CN201522541U (en) | 2009-08-03 | 2009-08-03 | Transformer substation electrical equipment on-line monitoring system |
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| CN (1) | CN201522541U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288850A (en) * | 2011-07-11 | 2011-12-21 | 广东电网公司电力科学研究院 | Zinc oxide arrester monitoring device |
| CN102332752A (en) * | 2011-09-19 | 2012-01-25 | 中国电力科学研究院 | Detection platform and method capable of carrying out remote pretesting and self-evaluation on transformer substation automatic system |
| CN102508134A (en) * | 2011-11-22 | 2012-06-20 | 广东电网公司电力科学研究院 | Partial discharge on-line monitoring method and system |
| CN102608406A (en) * | 2012-03-21 | 2012-07-25 | 武汉贝连测控技术有限公司 | Electric current monitoring terminal of online monitoring device for capacitive equipment of transformer substation |
| CN102650669A (en) * | 2012-05-21 | 2012-08-29 | 安徽省电力公司池州供电公司 | Charged detection device of substation equipment |
| CN104034979A (en) * | 2014-06-10 | 2014-09-10 | 国家电网公司 | Live testing device and testing system for zinc oxide lightning arrester |
| CN105301432A (en) * | 2015-11-26 | 2016-02-03 | 国网山东省电力公司济南供电公司 | Electric power equipment insulation leakage current on-line monitoring circuit |
| CN106019105A (en) * | 2016-07-01 | 2016-10-12 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharging and temperature monitoring device |
| CN109307851A (en) * | 2018-12-13 | 2019-02-05 | 山东泰开互感器有限公司 | A kind of voltage transformer error on-line calibration device |
| CN109932979A (en) * | 2019-04-22 | 2019-06-25 | 嘉应学院 | A kind of electrical equipment remote monitoring system |
| CN113484582A (en) * | 2021-06-30 | 2021-10-08 | 斯贝特(湖北)科技有限公司 | High-low voltage transformer substation electric power monitoring device |
-
2009
- 2009-08-03 CN CN2009200830609U patent/CN201522541U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288850A (en) * | 2011-07-11 | 2011-12-21 | 广东电网公司电力科学研究院 | Zinc oxide arrester monitoring device |
| CN102332752A (en) * | 2011-09-19 | 2012-01-25 | 中国电力科学研究院 | Detection platform and method capable of carrying out remote pretesting and self-evaluation on transformer substation automatic system |
| CN102508134A (en) * | 2011-11-22 | 2012-06-20 | 广东电网公司电力科学研究院 | Partial discharge on-line monitoring method and system |
| CN102608406A (en) * | 2012-03-21 | 2012-07-25 | 武汉贝连测控技术有限公司 | Electric current monitoring terminal of online monitoring device for capacitive equipment of transformer substation |
| CN102650669A (en) * | 2012-05-21 | 2012-08-29 | 安徽省电力公司池州供电公司 | Charged detection device of substation equipment |
| CN104034979A (en) * | 2014-06-10 | 2014-09-10 | 国家电网公司 | Live testing device and testing system for zinc oxide lightning arrester |
| CN105301432A (en) * | 2015-11-26 | 2016-02-03 | 国网山东省电力公司济南供电公司 | Electric power equipment insulation leakage current on-line monitoring circuit |
| CN106019105A (en) * | 2016-07-01 | 2016-10-12 | 河北箱变电器有限公司 | Secondary equipment for monitoring partial discharging and temperature monitoring device |
| CN109307851A (en) * | 2018-12-13 | 2019-02-05 | 山东泰开互感器有限公司 | A kind of voltage transformer error on-line calibration device |
| CN109307851B (en) * | 2018-12-13 | 2024-06-07 | 山东泰开互感器有限公司 | Online calibration device for voltage transformer error |
| CN109932979A (en) * | 2019-04-22 | 2019-06-25 | 嘉应学院 | A kind of electrical equipment remote monitoring system |
| CN113484582A (en) * | 2021-06-30 | 2021-10-08 | 斯贝特(湖北)科技有限公司 | High-low voltage transformer substation electric power monitoring device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20110803 |