CN202034827U - Integrated online monitoring system for 110-330kV substation circuit breaker - Google Patents
Integrated online monitoring system for 110-330kV substation circuit breaker Download PDFInfo
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- CN202034827U CN202034827U CN2011200970283U CN201120097028U CN202034827U CN 202034827 U CN202034827 U CN 202034827U CN 2011200970283 U CN2011200970283 U CN 2011200970283U CN 201120097028 U CN201120097028 U CN 201120097028U CN 202034827 U CN202034827 U CN 202034827U
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Abstract
The utility model provides an integrated online monitoring system for a 110-330kV substation circuit breaker. A high-speed data processor DSP5409 is taken as a core chip; furthermore, the integrated online monitoring system comprises a complex programmable logical device (CPLD), a large-capacity memory chip, a clock chip, a clock source, an isolation receiving and sending device (RS485) and various monitoring circuits; various state parameters can be recorded under the running process of the circuit breaker, such as LH secondary current, divide-shut brake coil current, divide-shut brake state, movable contact displacement, SF6 gas density, energy storage motor current, startup time interval, and the like. The data for recording the occurred event is processed and analyzed and the running state of the circuit breaker is scientifically evaluated so as to judge the running states of an operation mechanism of the circuit breaker, an energy storage mechanism, the service life of an electric contact, SF6 gas density, mechanical characteristic and the like, thus providing scientific basis for the state maintenance of the circuit breaker. Furthermore, the standard clock source can be calibrated so that the event records of a monitoring unit strictly correspond to the event record of a protective system, thus providing reliable data for the accident analysis of the circuit breaker.
Description
Technical field
The utility model relates to a kind of on-line monitoring system of transformer station, the particularly a kind of 110kV～comprehensive on-line monitoring system of 330kV substation breakers.
Background technology
The circuit breaker of power supply enterprise is safeguarded scheduled overhaul and the trouble hunting system always carried out.Its substantive characteristics is: will " overhaul " no matter the equipment actual state how, needs only " expiring ", blindness is big.The result causes the ineffective investment of a large amount of manpower and materials, increases the scheduled outage time, also increases the possibility of personal injury and misoperation fault simultaneously.
In recent years, along with the popularizing and using in electric power system of comprehensive intelligent systems such as sensing technology, microelectric technique, computer software and hardware and Digital Signal Processing, artificial neural net, intelligent expert system, carry out the circuit-breaker status monitoring and diagnose an important research field that becomes in the electric power system.By operating characteristics to circuit breaker, carry out real-time data acquisition and monitoring as: type of action (combined floodgate, separating brake, refuse branch, refuse to close, steal and jump etc.), action character (normal, unusual) and drop-out current, divide-shut brake coil current, SF6 density and parameters such as mechanical trip and speed, in conjunction with the characteristic parameter of circuit breaker, under the help of intelligent expert system, the running status of circuit breaker is carried out the science assessment.
Present existing circuit breakers monitoring device does not also form a circuit breaker monitoring network under " Internet of Things " notion, can't realize automatic identification, interactive cooperation, when accurately locating the school.Monitoring Data can't be carried out defectives such as check analysis with the record data of protective device, and especially same on-line monitoring system is poor in different regional life periods, thereby causes the data of different regions inconsistent, can not realize accurately location check and correction.
The utility model content
Technical problem to be solved in the utility model provides a kind of 110kV～comprehensive on-line monitoring system of 330kV substation breakers, under " Internet of Things " notion, set up the circuit breaker monitoring network, when the recognition of devices of realization circuit-breaker status monitoring, interactive cooperation, accurate school, and under the help of intelligent expert system, realize the running status assessment.
For achieving the above object, the utility model provides a kind of 110kV～comprehensive on-line monitoring system of 330kV substation breakers, comprise high-speed data processor DSP5409, and the switching value observation circuit that is connected with high-speed data processor DSP5409 respectively, the first analog quantity observation circuit, the second analog quantity observation circuit, complex programmable logic device (CPLD), clock chip, and the clock source of monitoring system being carried out the time check and correction, the input of described switching value observation circuit is connected with the auxiliary contact of circuit breaker, and the state variation of auxiliary contact inserts complex programmable logic device (CPLD) after photoelectricity isolation and level conversion; The input of the described first analog quantity observation circuit links to each other with the current sensor signal of energy storage motor, through amplify, level ratio, photoelectricity is isolated and level conversion after insert complex programmable logic device (CPLD); The input of the described second analog quantity observation circuit respectively with current sensor signal, the divide-shut brake coil current sensor signal of circuit breaker fracture, SF6 gas density sensor signal and displacement transducer signal link to each other, the semaphore of second analog quantity switches, amplifies, isolates the back through electronic switch and links to each other with high speed analog-to-digital conversion A/D chip, and the switching of the switching of electronic switch and high speed analog-to-digital conversion A/D passage is controlled through complex programmable logic device (CPLD) by high-speed data processor.
As most preferred embodiment of the present utility model, described clock source is a global position system GPS;
As most preferred embodiment of the present utility model, the described first analog quantity observation circuit comprises first amplifying circuit, is connected first comparison circuit of first amplification circuit output end, and first buffer circuit that is connected the first comparison circuit output;
As most preferred embodiment of the present utility model, the described second analog quantity observation circuit comprises second amplifying circuit, is connected the channel selection circuit of second amplification circuit output end, is connected second buffer circuit of channel selection circuit output, and the AD conversion chip that is connected the second buffer circuit output;
As most preferred embodiment of the present utility model, described switching value observation circuit comprises the 3rd buffer circuit, and second level shifting circuit that is connected the 3rd buffer circuit output;
As most preferred embodiment of the present utility model, described monitoring system further comprises the FLASH memory that links to each other with high-speed AD converter.
Compared with prior art, the utility model 110kV～comprehensive on-line monitoring system of 330kV substation breakers has the following advantages at least: the utility model monitoring system is an acp chip with high-speed data processor DSP5409, add complex logic programmable chip CPLD and each observation circuit, can under the circuit breaker running status, write down various state parameters, as LH secondary current, divide-shut brake coil current, opening and closing state, moving contact displacement, SF6 gas density, energy storage motor electric current and start blanking time or the like.By the data that logout takes place are handled and are analyzed, the running status of circuit breaker is carried out the assessment of science, judge running statuses such as circuit breaker operation mechanism, stored energy mechanism, contact electric life, SF6 gas density, mechanical property in view of the above, the foundation of science is provided for the repair based on condition of component of circuit breaker.In addition, in the time of can also carrying out the school by standard clock source, the logout that makes monitoring means is strict corresponding with the logout of protection system, for the accident analysis of circuit breaker provides reliable data.
Description of drawings
Fig. 1 is the schematic diagram of the utility model 110kV～comprehensive on-line monitoring system of 330kV substation breakers;
Fig. 2 is the schematic diagram of the utility model 110kV～comprehensive on-line monitoring system monitoring means of 330kV substation breakers.
Embodiment
Below in conjunction with accompanying drawing the utility model 110kV～comprehensive on-line monitoring system of 330kV substation breakers is done detailed description:
The whole network configuration of application the utility model monitoring system sees also shown in Figure 1, and central computer is connected with a plurality of hubs by opto-electronic conversion, is connected with a plurality of the utility model monitoring systems on each hub.
Below, see also shown in Figure 2, introduce the utility model monitoring system, the utility model 110kV～comprehensive on-line monitoring system of 330kV substation breakers comprises high-speed data processor DSP5409, and the switching value observation circuit that is connected with high-speed data processor respectively, the first analog quantity observation circuit, the second analog quantity observation circuit, complex programmable logic device (CPLD) (Complex Programmable Logic Device), clock chip, and clock source.
The described first analog quantity observation circuit comprises first amplifying circuit, is connected first comparison circuit of first amplification circuit output end, and first buffer circuit that is connected the first comparison circuit output, the input of described first amplifying circuit links to each other with the current signal of energy storage motor, the output of described first buffer circuit is connected with the input of complex programmable logic device (CPLD), the high level of described comparison circuit is represented energy storage motor in running status, and low level represents that energy storage motor is in halted state.
First analog quantity is to become the energy storage motor electric current that send through the punching Hall element, and this current signal inserts the complex programmable logic device (CPLD) interface through amplifying, compare, isolate the back, judges the start and stop blanking time of writing down energy storage motor by analysis.
The described second analog quantity observation circuit comprises second amplifying circuit, be connected the channel selection circuit of second amplification circuit output end, be connected second buffer circuit of channel selection circuit output, and the A/D conversion chip that is connected the second buffer circuit output, the input of described second amplifying circuit links to each other with the various transducers of circuit breaker respectively, the output of described A/D conversion chip links to each other with complex programmable logic device (CPLD), one end of described complex programmable logic device (CPLD) links to each other with the channel selection circuit of second analog quantity, and the other end links to each other with high-speed data processor DSP.
Second analog quantity is one group of signal, comprise circuit breaker fracture current sensor signal, divide-shut brake coil current sensor signal, and displacement transducer signal, this group signal links to each other with each passage of the channel selection circuit of the second analog quantity observation circuit respectively, this group analog signals is through amplifying, after amplifying, passage switching and isolation receive on the analog-digital conversion a/d chip interface, digital signal after the A/D conversion is handled by high-speed data processor DSP behind complex programmable logic device (CPLD), described high-speed data processor DSP also is connected with the FLASH memory, and the result after high-speed data processor DSP handles deposits the FLASH memory in.
Described switching value observation circuit comprises the 3rd buffer circuit, and second level shifting circuit that is connected the 3rd buffer circuit output, the input of described the 3rd buffer circuit links to each other with the auxiliary contact of circuit breaker, and the output of described second level shifting circuit links to each other with complex programmable logic device (CPLD).
Switching value signal and circuit breaker cut-off state synchronized, high-speed data processor DSP in the monitoring system analyzes according to the state of switching value and the data characteristics of various analog quantitys, and to event classify (as: separating brake, close a floodgate, refuse branch, refuse to close, steal accents, deciliter interlock, energy storage start and stop etc.) store.
Described complex programmable logic device (CPLD) is the logic control chip that guarantees that high-speed data processor DSP external chip can normally be worked in order, finish that passage as multi-channel analog signal switches, the signal polarity of analog signal is differentiated, the judgement of start stop signal, A the mode of D conversion control, preservation, the exchanges data of image data with communicate by letter and control during the clock school all be carry out logic control by complex programmable logic device (CPLD) with the sequential distribution.
Described FLASH memory is preserved the event data of record and the event property and the classified information of high-speed data processor DSP analyzing and processing, transfers out in the wait.
The utility model monitoring system also is provided with the isolation transceiver RS485 that is connected with high-speed data processor DSP, and it is integrated isolated from power, electrical isolation, RS-485 interface chip and bus protection device is that monitoring system is carried out central controlled communication interface.
Described clock chip provides time reference for the logout of monitoring system, guarantees that the time of logout is accurate.For the accumulated error of eliminating clock chip and the time error between each monitoring system in the monitoring network, the utility model monitoring system further comprises the global position system GPS standard clock source that links to each other with high-speed data processor DSP with CPLD, and can regularly carry out the time check and correction to each monitoring means in the monitoring network every day.
In the above-described embodiments, described global position system GPS standard clock source is arranged in the monitoring system, and links to each other with high-speed data processor DSP with CPLD, realizes unit time calibration.In order to realize carrying out time check and correction for all monitoring means in the monitoring system, described global position system GPS standard clock source also can directly be connected on the central computer, when regularly all monitoring means of its control being carried out the school by computer every day.
The utility model monitoring system is at any time treats the triggering state, will start each characteristic parameter data of monitoring system registers when any incident takes place circuit breaker.
Introduce the control procedure of the utility model monitoring system below, after the auxiliary contact of circuit breaker change, this variable signal is transferred to complex programmable logic device (CPLD) after isolation, level conversion, judged the state variation of circuit breaker by complex programmable logic device (CPLD); The current signal of described first analog quantity through the first analog quantity observation circuit after, enter the complex programmable logic device (CPLD) interface at last, complex programmable logic device (CPLD) is judged the start and stop blanking time of back record energy storage motor by analysis; The current sensor of described circuit breaker fracture, divide-shut brake coil current sensor, the analog signals amount of SF6 gas density transducer and displacement transducer is switched, amplifies, is isolated the back through electronic switch and links to each other with high speed analog-to-digital conversion (A/D) chip, and the switching of the switching of electronic switch and high speed analog-to-digital conversion (A/D) passage is controlled through CPLD (CPLD) by high-speed data processor DSP.
The utility model monitoring system adopts the Internet of Things notion, with the digit recognition technology, sensor technology, the GPS global-positioning technology, the digitlization detection technique, technology such as photooptical data communication etc. combine, with high-speed data processor DSP5409 is acp chip, peripheral chip adopts large-scale complex logic programmable chip CPLD, high-capacity FLASH 39VF400, advance signal conditioning and buffer circuit, high-precision multi-path A/D conversion chip AD7865, clock chip DS12C887+ chip, isolate transceiver RSM485CHT etc., set up a brand-new circuit breaker monitoring system.
Described digit recognition technology can be discerned each system monitoring unit that transformer station installs automatically, and sets up corresponding relation with monitored target.
Described sensor technology refers to adopt different sensor design, convert all kinds of state parameters of circuit breaker to voltage or the magnitude of current is convenient to Digital Detecting, electrical quantity sensor all adopts open-close type magnetic balance design, need not disassemble the circuit breaker secondary connection and can install and use.
Described GPS global-positioning technology can obtain the geography information and the standard time clock of monitoring system; in conjunction with the clock chip DS12C887+ on the monitoring means; regularly carry out clock alignment every day, make the clock of monitoring network consistent and with the clock strict conformance of transforming plant protecting system.
Described digitlization detection technique is real-time data acquisition and the treatment technology that is based upon on sensor technology, high-speed a/d conversion chip AD7865 and the high-speed data processor DSP5409 basis.
Conditioning of described advance signal and buffer circuit be with each status signal of circuit breaker amplify, filtering, electrical isolation, guarantee safe, stable, the reliability service of monitoring means.
Described photoelectricity isolated communication technology be for guarantee in the monitoring network between each monitoring means and and data switching exchane between isolated from power, electrical isolation, guarantee stable, the reliability service of monitoring network.
Data-handling capacity that high-speed data processor DSP5409 is powerful and high-capacity FLASH memory have guaranteed that monitoring means can catch circuit breaker moment event and write down the characteristic parameter data of each physical quantity, and can carry out feature and behavioural analysis and judgement to the data of recording events, in time connect with the center monitoring main frame and carry out data switching exchane by network data.
The utility model monitoring system is pressed close to the requirement of intelligent grid conscientiously, by the comprehensive monitoring of system's background computer realization to 110-330kV transformer station inner breaker equipment state, promoted the detection level of circuit breaker energetically, promote and realize " repairing when repairing promptly; do not do the inaction maintenance ", the blindness and the mandatory equipment that causes " excessively maintenance " of mechanism's maintenance have been avoided, saved great amount of manpower, material resources, pre-estimation: 1,500,000 yuan (circuit breaker can reduce several 50 of inspection rack can to save mechanism's maintenance fund in 1 year, on average can economize on the use of funds about 30,000 yuan, add up to 1,500,000 yuan for every).Simultaneously, the utility model monitoring system is applicable to electric power system and each factories and mines, enterprise, power plant, transformer station, can produce a profit 2,000,000 yuan.Add up to and produce 3,500,000 yuan of economic benefits.
In addition, the utility model monitoring system makes the judgement of score, combined floodgate reason more accurate by the state of circuit breaker operation is judged, improve monitoring level greatly to circuit breaker, reduce the time of searching fault, reduce the equipment interruption duration, greatly promote power supply reliability.
The above only is a kind of execution mode of the present utility model, it or not whole or unique execution mode, the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model specification is claim of the present utility model and contains.
Claims (6)
1. 110kV～comprehensive on-line monitoring system of 330kV substation breakers, it is characterized in that: comprise high-speed data processor (DSP5409), and the switching value observation circuit that is connected with high-speed data processor (DSP5409) respectively, the first analog quantity observation circuit, the second analog quantity observation circuit, CPLD (CPLD), isolate transceiver (RS485), clock chip, and the clock source of monitoring system being carried out the time check and correction, the input of described switching value observation circuit is connected with the auxiliary contact of circuit breaker, and the state variation of auxiliary contact inserts CPLD (CPLD) after photoelectricity isolation and level conversion; The input of the described first analog quantity observation circuit links to each other with the current sensor signal of energy storage motor, through amplify, level ratio, photoelectricity is isolated and level conversion after insert CPLD (CPLD); The input of the described second analog quantity observation circuit links to each other with current sensor signal, divide-shut brake coil current sensor signal, SF6 gas density sensor signal and the displacement transducer signal of circuit breaker fracture respectively, the semaphore of second analog quantity switches, amplifies, isolates the back through electronic switch and links to each other with high speed analog-to-digital conversion (A/D) chip, and the switching of the switching of electronic switch and high speed analog-to-digital conversion (A/D) passage is controlled through CPLD (CPLD) by high-speed data processor.
2. the 110kV as claimed in claim 1～comprehensive on-line monitoring system of 330kV substation breakers is characterized in that: described clock source is global positioning system (GPS).
3. the 110kV as claimed in claim 1～comprehensive on-line monitoring system of 330kV substation breakers, it is characterized in that: the described first analog quantity observation circuit comprises first amplifying circuit, is connected first comparison circuit of first amplification circuit output end, and first buffer circuit that is connected the first comparison circuit output.
4. the 110kV as claimed in claim 1～comprehensive on-line monitoring system of 330kV substation breakers, it is characterized in that: the described second analog quantity observation circuit comprises second amplifying circuit, is connected the channel selection circuit of second amplification circuit output end, is connected second buffer circuit of channel selection circuit output, and high speed analog-to-digital conversion (A/D) chip that is connected the second buffer circuit output.
5. the 110kV as claimed in claim 1～comprehensive on-line monitoring system of 330kV substation breakers is characterized in that: described switching value observation circuit comprises the 3rd buffer circuit, and second level shifting circuit that is connected the 3rd buffer circuit output.
6. the 110kV as claimed in claim 1～comprehensive on-line monitoring system of 330kV substation breakers is characterized in that: described monitoring system further comprises the FLASH memory that links to each other with high-speed data processor.
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| CN2011200970283U CN202034827U (en) | 2011-04-06 | 2011-04-06 | Integrated online monitoring system for 110-330kV substation circuit breaker |
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| CN2011200970283U CN202034827U (en) | 2011-04-06 | 2011-04-06 | Integrated online monitoring system for 110-330kV substation circuit breaker |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675668A (en) * | 2013-12-18 | 2014-03-26 | 国家电网公司 | State monitoring system of high-voltage breaker |
| CN105139903A (en) * | 2014-06-04 | 2015-12-09 | 中广核工程有限公司 | Nuclear safety classification digital control system (DCS) maintenance method, device and system |
| CN106291036A (en) * | 2016-08-11 | 2017-01-04 | 杭州仕邦电力科技有限公司 | Integral type low voltage monitoring device |
| CN108333505A (en) * | 2018-03-02 | 2018-07-27 | 湖南科技大学 | High-voltage circuitbreaker on-line condition monitoring system based on WSN |
| CN110138294A (en) * | 2019-06-25 | 2019-08-16 | 国网山东省电力公司临朐县供电公司 | A kind of automatic magnetic exciting control device based on DSP |
-
2011
- 2011-04-06 CN CN2011200970283U patent/CN202034827U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675668A (en) * | 2013-12-18 | 2014-03-26 | 国家电网公司 | State monitoring system of high-voltage breaker |
| CN105139903A (en) * | 2014-06-04 | 2015-12-09 | 中广核工程有限公司 | Nuclear safety classification digital control system (DCS) maintenance method, device and system |
| CN105139903B (en) * | 2014-06-04 | 2017-12-29 | 中广核工程有限公司 | Core level DCS maintaining method, apparatus and system |
| CN106291036A (en) * | 2016-08-11 | 2017-01-04 | 杭州仕邦电力科技有限公司 | Integral type low voltage monitoring device |
| CN108333505A (en) * | 2018-03-02 | 2018-07-27 | 湖南科技大学 | High-voltage circuitbreaker on-line condition monitoring system based on WSN |
| CN110138294A (en) * | 2019-06-25 | 2019-08-16 | 国网山东省电力公司临朐县供电公司 | A kind of automatic magnetic exciting control device based on DSP |
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Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: XIANYANG POWER SUPPLY BUREAU Effective date: 20140326 Owner name: XIANYANG POWER SUPPLY BUREAU XI'AN RUICHI ELECTRIC Free format text: FORMER OWNER: XI'AN RUICHI ELECTRIC CO., LTD. Effective date: 20140326 |
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Free format text: CORRECT: ADDRESS; FROM: 712000 XIANYANG, SHAANXI PROVINCE TO: 100031 XICHENG, BEIJING |
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Effective date of registration: 20140326 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Xianyang Power Supply Bureau Patentee after: Xi'an Ruichi Electric Co., Ltd. Address before: Xianyang City, Shaanxi Province, 712000 West Road No. 30 Patentee before: Xianyang Power Supply Bureau Patentee before: Xi'an Ruichi Electric Co., Ltd. |
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Granted publication date: 20111109 |