CN201935990U - Circuit breaker performance on-line monitoring system - Google Patents
Circuit breaker performance on-line monitoring system Download PDFInfo
- Publication number
- CN201935990U CN201935990U CN2011200714304U CN201120071430U CN201935990U CN 201935990 U CN201935990 U CN 201935990U CN 2011200714304 U CN2011200714304 U CN 2011200714304U CN 201120071430 U CN201120071430 U CN 201120071430U CN 201935990 U CN201935990 U CN 201935990U
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- China
- Prior art keywords
- monitoring system
- line monitoring
- interface
- isolating switch
- circuit breaker
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Abstract
The utility model provides a circuit breaker-line performance monitoring system, which comprises a processor. The processor is connected with a multi-circuit analog-to-digital converter and a large-screen color LCD, the multi-circuit analog-to-digital converter is connected with three current transformers which are based on flexible Roche principle. The system has the advantages of high processing speed, high communication stability and high degree of automation, and can ensure the linearity and accuracy of the circuit breaker within the maximum fault current range.
Description
Technical field
The utility model relates to electric and electronic technical field, particularly a kind of isolating switch performance on-line monitoring system.
Background technology
Each electric pressure (6kV, 10kV, 35kV, 66kV, 110kV, 220kV, 330kV, 500kV, 1000kV) of electric system is now all used isolating switch in a large number, when system's normal running, switch on and off load current, open failure electric current under failure condition, faulty component is excised from system, in system, play important effect.But most isolating switchs are not all installed real-time watch device, but according to original working specification prophylactic repair, have very big blindness, and very big uneconomical factor is also arranged.Present existing circuit breakers monitoring device all is to adopt independent signal pickup assembly and background computer to cooperate to realize monitoring function basically, cost is higher, and installation environment requires relatively harsher, so generally all be that part adopts in the transformer station of 110kV and above electric pressure, be difficult to realize large-area applying.
The shortcoming of prior art is: 1, the transient characterisitics of mutual inductor and magnetic saturation problem can influence the precision of image data; 2, handle by computing machine and daemon software, can influence processing speed, increase system complexity and cost; 3, communication robust and effect can influence the real-time and the accuracy of judgement; 4, the development imagination of building strong intelligent grid with present State Grid Corporation of China misfits, and the on-the-spot development plan that special-purpose computing machine and software and unattended substation be installed is absonant in each transformer station.
The utility model content
The utility model provides a kind of isolating switch performance on-line monitoring system, and processing speed is fast, communication stability is high, automaticity is high, can guarantee the linearity and the precision of isolating switch in the maximum fault current scope.
To achieve these goals, the utility model provides following technical scheme:
A kind of isolating switch performance on-line monitoring system, it comprises: processor, described processor connects the analog to digital converter and the large screen color liquid crystal display of multichannel, and described multichannel analog to digital converter connects 3 current transformers based on the flexible Luo principle.
Preferably, also be provided with touch-screen on the described large screen color liquid crystal display.
Preferably, described processor also is connected with switching value IO interface, real-time clock and house dog, RS485 interface, CAN interface, fiber optic Ethernet interface, DDR, Nand Flash or/and SPI Flash.
By implementing above technical scheme, has following technique effect: the isolating switch performance on-line monitoring system that the utility model provides, adopt the flexible Luo current transformer to gather primary system electric current and circuit breaker trip loop current, the linearity and the magnetic saturation problem of electromagnetic type current transformer have been solved, make and in the fault current gamut, all have the very high precision and the linearity, and on-the-spot installation is very easy, need not to disconnect original current return, and this system handles speed is fast, the automaticity height, safe and reliable, the communication stability height, easy to use, directly perceived and the cost performance height of operation.
Description of drawings
The system construction drawing that Fig. 1 provides for the utility model embodiment.
Embodiment
In order better to understand the technical solution of the utility model, describe the embodiment that the utility model provides in detail below in conjunction with accompanying drawing.
The utility model embodiment provides a kind of isolating switch performance on-line monitoring system, as shown in Figure 1, this system comprises: processor, described processor connects multichannel analog to digital converter and large screen color liquid crystal display, and described multichannel analog to digital converter connects 3 current transformers 1 based on the flexible Luo principle, current transformer 2 summation current transformers 3.Three current transformers are connected on the three-phase wire of isolating switch, by detecting three-phase current signal, serviceability to this isolating switch, state is judged in the present embodiment, described processor is high-performance core processing device (as: model is the processor of MCF54418), described multichannel analog to digital converter is 16 quick analog to digital conversion devices (as: analog to digital converter of AD7606) of sampling simultaneously, realization is to the high precision collecting of figure signal and handle the three-phase current of primary system and the tripping current in circuit breaker trip loop when obtaining circuit breaker trip excision fault at a high speed.Thereby judge performance, fault and the duty etc. of isolating switch.3 current transformers based on the flexible Luo principle of this system's employing are realized the accurate conversion to the electric system three-phase current, realize accurate conversion to the circuit breaker trip loop current in the maximum fault current scope, all can guaranteeing linearity and precision based on the current transformer of flexible Luo principle by 1.
This processor carries out integral operation to fault current with 5/8 millisecond time cycle, draws the electric life aggregate-value of isolating switch, compares with nominal parameter, when reaching setting value, sends alarm signal, and the prompting operation maintenance personnel overhaul isolating switch; The amplitude and the duration (being accurate to 5/8 millisecond) of tripping current are compared with setting value respectively, when reaching the critical value of setting, send alarm signal, prompting operation maintenance personnel overhaul the operating mechanism of isolating switch.
In other embodiment, further, also be provided with touch-screen on the described large screen color liquid crystal display.The operation interface that configuration has the colour liquid crystal display device of touch-screen can all be the operation of icon formula, can all adopt the components and parts of wide temperature range, the shell employing high-protection level design proposal of this system can be directly installed on the open air or high-voltage switch gear is indoor.Have compact conformation, easy to use, characteristics such as operation is directly perceived, cost performance height.
In addition, in other embodiment, in order to make this system have more function and expansion, described processor also is connected with the one or any several of switching value IO interface, real-time clock and house dog, RS485 interface (a kind of interface of intelligence instrument), CAN (controller zone network) interface, fiber optic Ethernet interface, DDR (the Double Data Rate synchronous DRAM is as DDR2, the DDR3 etc. of 1G or 2G), Nand Flash (internal memory of non-linear macroelement pattern), SPI Flash (Serial Peripheral Interface internal memory).
The system that the foregoing description provides adopts the flexible Luo current transformer to gather primary system electric current and circuit breaker trip loop current, the linearity and the magnetic saturation problem of electromagnetic type current transformer have been solved, make and in the fault current gamut, all have the very high precision and the linearity, and on-the-spot installation is very easy, need not to disconnect original current return, safe and reliable.Realize the calculating of circuit breaker electrical endurance and the judgement of mechanical property by high-speed core processor and embedded software, the colour liquid crystal display device of configuration band touch-screen, the operation of icon formula, the shell of wide temperature range device and high-protection level, multiple local communication interface, can direct outdoor installation, conveniently on-the-spot O﹠M.Integrated level height, the realization little, function of work on the spot amount do not rely on communication media, and wiring is easy, cost performance is high.
More than a kind of isolating switch performance on-line monitoring system that the utility model embodiment is provided be described in detail, for one of ordinary skill in the art, thought according to the utility model embodiment, part in specific embodiments and applications all can change, in sum, this description should not be construed as restriction of the present utility model.
Claims (3)
1. isolating switch performance on-line monitoring system, it is characterized in that, comprise: processor, described processor connects the analog to digital converter and the large screen color liquid crystal display of multichannel, and described multichannel analog to digital converter connects 3 current transformers based on the flexible Luo principle.
2. isolating switch performance on-line monitoring system according to claim 1 is characterized in that, also is provided with touch-screen on the described large screen color liquid crystal display.
3. as isolating switch performance on-line monitoring system as described in the claim 2, it is characterized in that described processor also is connected with switching value IO interface, real-time clock and house dog, RS485 interface, CAN interface, fiber optic Ethernet interface, DDR, Nand Flash or/and SPI Flash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200714304U CN201935990U (en) | 2011-03-18 | 2011-03-18 | Circuit breaker performance on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200714304U CN201935990U (en) | 2011-03-18 | 2011-03-18 | Circuit breaker performance on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201935990U true CN201935990U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200714304U Expired - Fee Related CN201935990U (en) | 2011-03-18 | 2011-03-18 | Circuit breaker performance on-line monitoring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201935990U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112951670A (en) * | 2019-12-10 | 2021-06-11 | 华为数字技术（苏州）有限公司 | Circuit breaker with current detection function and communication power supply |
| CN112951670B (en) * | 2019-12-10 | 2024-05-17 | 华为数字能源技术有限公司 | Circuit breaker with current detection function and communication power supply |
-
2011
- 2011-03-18 CN CN2011200714304U patent/CN201935990U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112951670A (en) * | 2019-12-10 | 2021-06-11 | 华为数字技术（苏州）有限公司 | Circuit breaker with current detection function and communication power supply |
| CN112951670B (en) * | 2019-12-10 | 2024-05-17 | 华为数字能源技术有限公司 | Circuit breaker with current detection function and communication power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110817 Termination date: 20120318 |