CN204008958U - Intelligent transformer station transmission line travelling wave fault location device - Google Patents
Intelligent transformer station transmission line travelling wave fault location device Download PDFInfo
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- CN204008958U CN204008958U CN201420289109.7U CN201420289109U CN204008958U CN 204008958 U CN204008958 U CN 204008958U CN 201420289109 U CN201420289109 U CN 201420289109U CN 204008958 U CN204008958 U CN 204008958U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000005693 optoelectronics Effects 0.000 abstract description 3
- 230000001052 transient effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Locating Faults (AREA)
Abstract
An Intelligent transformer station transmission line travelling wave fault location device, pure smooth type electronic current mutual inductor, photoelectric switching circuit, travelling wave signal high speed acquisition unit, signal condition and A/D change-over circuit, travelling wave signal processing unit and row wave datum transmission unit are connected successively; Described pure smooth type electronic current mutual inductor is connected to transmission line of electricity; Also comprise the GPS unit that is connected to travelling wave signal processing unit.The beneficial effect the utlity model has is: based on pure smooth type electronic mutual inductor, have better transient response characteristic, be more conducive to realize travelling wave ranging, improve the reliability of range finding, expand the scope of application.At electronic current mutual inductor, by light signal, after opto-electronic conversion, increase travelling wave signal high speed acquisition unit, improved the adaptability of traveling wave fault location device in intelligent substation.
Description
Technical field
The utility model relates to power system transmission line Fault-Locating Test field, specifically a kind of Intelligent transformer station transmission line travelling wave fault location device.
Background technology
Along with the continuous lifting of user to power supply reliability and quality of power supply requirement, the security of electric power supply, reliability and the intelligent developing direction that becomes following electrical network.An importance that improves power supply reliability is exactly to find as early as possible trouble spot, to reduce power off time after fault.After transmission line of electricity breaks down, even if successful reclosing also needs track walker's looking up the fault point, can the damaged condition causing according to fault judgement circuit continue operation or palpus interruption maintenance, to remove a hidden danger.Measuring distance of transmission line fault technology is an important technology that guarantees power grid security, in China 110kV and above electrical network, needs to be equipped with measuring distance of transmission line fault device in the plant stand of neutral-point solid ground.
Utility model content
The purpose of this utility model is to provide a kind of Intelligent transformer station transmission line travelling wave fault location device.
The technical scheme that realizes the utility model object is as follows: a kind of Intelligent transformer station transmission line travelling wave fault location device, and pure smooth type electronic current mutual inductor, photoelectric switching circuit, travelling wave signal high speed acquisition unit, signal condition and A/D change-over circuit, travelling wave signal processing unit and row wave datum transmission unit are connected successively; Described pure smooth type electronic current mutual inductor is connected to transmission line of electricity; Also comprise the GPS unit that is connected to travelling wave signal processing unit.
The beneficial effect the utlity model has is: based on pure smooth type electronic mutual inductor, have better transient response characteristic, be more conducive to realize travelling wave ranging, improve the reliability of range finding, expand the scope of application.At electronic current mutual inductor, by light signal, after opto-electronic conversion, increase travelling wave signal high speed acquisition unit, improved the adaptability of traveling wave fault location device in intelligent substation.
Accompanying drawing explanation
Fig. 1 is system construction drawing of the present utility model.
Embodiment
As shown in Figure 1, an Intelligent transformer station transmission line travelling wave fault location device, pure smooth type electronic current mutual inductor 2, photoelectric switching circuit 3, travelling wave signal high speed acquisition unit 4, signal condition and A/D change-over circuit 5, travelling wave signal processing unit 6 and row wave datum transmission unit 7 are connected successively; Described pure smooth type electronic current mutual inductor is connected to transmission line of electricity 1; Also comprise the GPS unit 8 that is connected to travelling wave signal processing unit.
Wherein, pure smooth type electronic current mutual inductor is for the collection of transmission line of electricity current signal, and the light signal by gathering, via opto-electronic conversion, becomes electric signal, has realized the isolation of high and low pressure side simultaneously.Utilize travelling wave signal high speed acquisition unit to gather transient state travelling wave signal on transmission line of electricity, utilize the data after dual-port SRAM is changed A/D to store.Signal condition and A/D change-over circuit comprise high low-pass filter circuit, amplification and rectification circuit and A/D change-over circuit.For failure judgement, a situation arises in travelling wave signal processing section, and by judged result output, comprise GPS interface section, transmission line of electricity ranging unit.Travelling wave signal processing unit is stamped time tag by travelling wave signal, and the power transmission line comprehensive single end distance measurement method that recycling combines based on impedance method and traveling wave method, calculates measuring distance, sends into data transmission unit.Row wave datum transmission unit, for the transmission of row ripple range data, comprises code and decode, optical fiber receiver-transmitter module.
The course of work of the present utility model is, pure smooth type electronic current mutual inductor 2 senses the signal of tested transmission line of electricity 1, through photoelectric switching circuit 3, be converted to after electric signal, through travelling wave signal high speed acquisition unit 4, signal condition and A/D change-over circuit 5, then by travelling wave signal processing unit 6, process and calculate.During normal operation, the operating electric signal of travelling wave signal high speed acquisition unit 4 Real-Time Monitoring.When system generation disturbance, travelling wave signal high speed acquisition unit 4 is according to fault, start after judgement detects disturbance and start to record ripple, read that GPS unit 8 provides simultaneously unified time code to obtain the markers of disturbance Startup time, then be transferred to row wave datum transmission unit 7.
Claims (1)
1. an Intelligent transformer station transmission line travelling wave fault location device, it is characterized in that, pure smooth type electronic current mutual inductor (2), photoelectric switching circuit (3), travelling wave signal high speed acquisition unit (4), signal condition and A/D change-over circuit (5), travelling wave signal processing unit (6) and row wave datum transmission unit (7) are connected successively; Described pure smooth type electronic current mutual inductor (2) is connected to transmission line of electricity (1); Also comprise the GPS unit (8) that is connected to travelling wave signal processing unit (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420289109.7U CN204008958U (en) | 2014-06-03 | 2014-06-03 | Intelligent transformer station transmission line travelling wave fault location device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420289109.7U CN204008958U (en) | 2014-06-03 | 2014-06-03 | Intelligent transformer station transmission line travelling wave fault location device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008958U true CN204008958U (en) | 2014-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420289109.7U Expired - Lifetime CN204008958U (en) | 2014-06-03 | 2014-06-03 | Intelligent transformer station transmission line travelling wave fault location device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008958U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259470A (en) * | 2015-09-30 | 2016-01-20 | 贵州电力试验研究院 | Fault distance measuring system based on optical current transformers and method |
| CN105445594A (en) * | 2016-01-25 | 2016-03-30 | 国网山东省电力公司高唐县供电公司 | Power grid fault detection system |
| CN111007362A (en) * | 2019-12-27 | 2020-04-14 | 广东电网有限责任公司电力科学研究院 | Power distribution network fault line selection positioning system, method and equipment |
| CN112285458A (en) * | 2020-09-30 | 2021-01-29 | 国家电网公司华北分部 | Flexible direct current line traveling wave protection testing device |
-
2014
- 2014-06-03 CN CN201420289109.7U patent/CN204008958U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259470A (en) * | 2015-09-30 | 2016-01-20 | 贵州电力试验研究院 | Fault distance measuring system based on optical current transformers and method |
| CN105445594A (en) * | 2016-01-25 | 2016-03-30 | 国网山东省电力公司高唐县供电公司 | Power grid fault detection system |
| CN105445594B (en) * | 2016-01-25 | 2018-04-13 | 国网山东省电力公司高唐县供电公司 | Power grid fault detection system |
| CN111007362A (en) * | 2019-12-27 | 2020-04-14 | 广东电网有限责任公司电力科学研究院 | Power distribution network fault line selection positioning system, method and equipment |
| CN112285458A (en) * | 2020-09-30 | 2021-01-29 | 国家电网公司华北分部 | Flexible direct current line traveling wave protection testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141210 |