CN103296670A - Direct current power supply lightning arrester used for electrical power system - Google Patents
Direct current power supply lightning arrester used for electrical power system Download PDFInfo
- Publication number
- CN103296670A CN103296670A CN2012100535784A CN201210053578A CN103296670A CN 103296670 A CN103296670 A CN 103296670A CN 2012100535784 A CN2012100535784 A CN 2012100535784A CN 201210053578 A CN201210053578 A CN 201210053578A CN 103296670 A CN103296670 A CN 103296670A
- Authority
- CN
- China
- Prior art keywords
- pressure
- sensitive valve
- valve block
- electrode slice
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
A direct current power supply lightning arrester used for an electrical power system structurally comprises a base and a case, wherein the base is provided with a socket, a lightning protection device circuit board module is arranged inside the case, and the case is provided with a matched plug formed by an electrode slice pair. The lightning protection device circuit board module structurally comprises a pressure-sensitive valve plate and a heat tripping switch circuit, wherein the pressure-sensitive valve plate and the heat tripping switch circuit are sequentially arranged between a first electrode slice and a second electrode slice. The direct current power supply lightning arrester is characterized in that a discharge tube is additionally arranged between the first electrode slice and the pressure-sensitive valve plate, a current output end of the discharge tube is connected with a current input end of the pressure-sensitive valve plate, and a current output end of the pressure-sensitive valve plate is connected with a current input end of the heat tripping switch circuit. The direct current power supply lightning arrester used for the electrical power system has reliable heat tripping reliability, meets level limit voltage of relevant standards, and effectively solves the current leakage problem of an existing direct current lightning arrester.
Description
Technical field
The invention belongs to the shocking preventing technology field, relate to the DC power supply lightning protection device of using in a kind of electric power system, specifically the DC power supply lightning protection device of the special-purpose no leakage current of electric power.
Background technology
Dc operation power supply system is one of indispensable secondary device in the electric substation, and its reliability directly influences the safe and reliable operation of substation secondary device.Along with the application in transformer station of a large amount of microcomputer protecting devices and comprehensive automation equipment, and the input of a large amount of unattended stations, also more and more higher to the stability requirement of direct current operative power source.
Existing DC power supply lightning protection device faces following problem:
1, there is leakage current in the DC lightning prevention device, causes the mistake alarm of insulating monitoring system:
The transformer station direct current system insulation against ground requires very high, installs lightning protection device additional and can cause system's leakage current to increase in system.In the DC power system of transformer station secondary system; DC power supply insulation against ground supervisory control system all is installed; this system is very responsive to detecting the direct current system insulation against ground; being generally set point is 20 μ A levels; and at present the DC lightning prevention device leakage current of most of lightning protection manufacturer production both domestic and external all 10 μ A with about; incorporating the DC lightning prevention device in the transformer station direct current system into does when protecting; DC lightning prevention device of every increase; the leakage current of direct current system will be multiplied; the set point that finally can surpass the insulating monitoring system causes the alarm of equipment mistake.In addition, (stability of external famous brand name components and parts better, its leakage current is less with the time variation because the stability problem of lightning protection device components and parts; Even homemade new components and parts leakage current is in 10 μ A, because its less stable, As time goes on can produce very big variation), even the DC lightning prevention device leakage current of installing in direct current system does not reach the set point of insulating monitoring system, along with the passing lightning protection device of lightning protection device running time is progressively aging, its leakage current can slowly become greatly, finally causes the mistake alarm of insulating monitoring system.This is one of maximum hidden danger of present DC power supply existence in transformer station uses.
2, the used DC lightning prevention module Primary Component of electric power machine room is pressure-sensitive valve block at present, and lasting leakage current increases the temperature rising that will cause and causes that on fire, short circuit accident takes place;
3, the used DC lightning prevention module Primary Component of electric power machine room is pressure-sensitive valve block at present, and under the lasting impact of greater impact electric current, if can not reliably thread off, its deterioration generally presents short-circuit condition, causes the power supply short circuit accident to take place.
Summary of the invention
The present invention produces in order to make lightning protection device not have leakage current when the continuous service, thoroughly avoid increasing the insulating monitoring system false alarm situation that causes, the generation that reaches short circuit accident because of the aging leakage current of lightning protection device, design the DC power supply lightning protection device of using in a kind of electric power system, avoided the generation of a series of accidents that the DC power supply lightning protection device causes because of the problem that has leakage current effectively.
The technical solution used in the present invention is: the DC power supply lightning protection device of using in a kind of electric power system, comprise the base that has socket in the structure, be built-in with the lightning protection component circuit board module and have by the cabinet of electrode slice to the supporting plug that forms, be included in the pressure-sensitive valve block that sets gradually between first electrode slice and second electrode slice in the structure of lightning protection component circuit board module, and hot dropout switching circuit, key is: set up discharge tube between first electrode slice and pressure-sensitive valve block, the current output terminal of discharge tube is connected with the current input terminal of pressure-sensitive valve block, and the current output terminal of pressure-sensitive valve block is connected with the current input terminal of hot dropout switching circuit.
Key of the present invention is: 1, the pressure-sensitive valve block of high-energy is with the cascaded structure matching design of gas discharge tube; 2, low residual voltage Technology design: selecting for use of device, adopt big through-flow low pulsed gas discharge pipe and big through-flow pressure-sensitive valve block, guarantee enough current by pass, structurally select extremely short electrode slice pin for use, guarantee the low inductance in earial drainage loop, thereby effectively guaranteed low residual voltage.This DC power supply lightning protection device compatibility the no afterflow characteristic of pressure-sensitive valve block and the no leakage current characteristic of gas discharge tube, with pressure-sensitive valve block with the gas discharge tube series design, pressure-sensitive valve block is selected big through-flow high energy valve block for use, has enough energy to realize hot tripping function when having guaranteed the lightning protection device deterioration.Because pressure-sensitive valve block and gas discharge tube are in the response speed property of there are differences, avoid the stack of both residual voltages, discharge tube is selected the gas discharge tube of the big through-flow characteristic of low pulse (residual voltage is low) for use, therefore based on above 2 points, this product has reliable hot dropout reliability and satisfies the grade deboost of relevant criterion, has effectively solved the problem that there is Leakage Current in present DC lightning prevention device.
The invention has the beneficial effects as follows: 1, during the online continuous service of lightning protection device, no leakage current produces, and has thoroughly avoided the generation that increases the direct current insulation against ground monitoring system false alarm situation that causes because of the aging leakage current of lightning protection device; 2, the temperature of having avoided pressure-sensitive valve block due to leakage current increase to cause raises and causes that on fire, short circuit accident takes place; 3, avoided taking place because of the device deterioration short circuit accident that the lightning impulse of lightning protection device through continuing causes.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is electrical schematic diagram of the present invention.
In the accompanying drawing, 1 represents cabinet, and 2 represent second electrode slice, and 5 represent first electrode slice, and B represents discharge tube, and R represents pressure-sensitive valve block, and S represents hot dropout switching circuit, and 6 represent base.
Embodiment
The DC power supply lightning protection device of using in a kind of electric power system, comprise the base 6 that has socket in the structure, be built-in with the lightning protection component circuit board module and have by the cabinet 1 of electrode slice to the supporting plug that forms, be included in the pressure-sensitive valve block R that sets gradually between first electrode slice 5 and second electrode slice 2 in the structure of lightning protection component circuit board module, and hot dropout switching circuit S, importantly: between first electrode slice 5 and pressure-sensitive valve block R, set up discharge tube B, the current output terminal of discharge tube B is connected with the current input terminal of pressure-sensitive valve block R, and the current output terminal of pressure-sensitive valve block R is connected with the current input terminal of hot dropout switching circuit S.
Described first electrode slice 5 and discharge tube B welding, the fixing welding of discharge tube B and pressure-sensitive valve block R, pressure-sensitive valve block R and 2 welding of second electrode slice also are assembled in the cabinet 1, and cabinet 1 is pegged graft by the socket of plug and base 6.
Described discharge tube B is that the nominal through-current capacity is the action of low-voltage pulse gas discharge tube of 10～20KA.
Described pressure-sensitive valve block R is that the nominal through-current capacity is the pressure-sensitive valve block of 10～20KA.
In the specific implementation, this DC power supply lightning protection device snapped in the reservation guide rail bar in the transforming plant DC power-supply system by base use, it is 20kA action of low-voltage pulse gas discharge tube that discharge tube B adopts the nominal through-current capacity, it is the pressure-sensitive valve block of 20kA that described pressure-sensitive valve block R adopts the nominal through-current capacity, like this, adopt big through-flow low pulsed gas discharge pipe and big through-flow pressure-sensitive valve block, guarantee enough current by pass, structurally select extremely short electrode slice pin for use, guarantee the low inductance in earial drainage loop, thereby effectively guaranteed low residual voltage.With the series connection of the pressure-sensitive valve block of high-energy with gas discharge tube, like this, pressure-sensitive valve block is selected big through-flow high-performance valve block for use, has enough energy to realize hot tripping function when having guaranteed the lightning protection device deterioration.Because pressure-sensitive valve block and gas discharge tube are in the response speed property of there are differences, avoid the stack of both residual voltages, discharge tube is selected the gas discharge tube of the big through-flow characteristic of low pulse (residual voltage is low) for use, therefore based on above 2 points, this product has reliable hot dropout reliability and satisfies the grade deboost of relevant criterion, has effectively solved the problem that there is Leakage Current in present DC lightning prevention device.
Claims (4)
1. the DC power supply lightning protection device of using in the electric power system, comprise the base (6) that has socket in the structure, be built-in with the lightning protection component circuit board module and have by the cabinet (1) of electrode slice to the supporting plug that forms, be included in the pressure-sensitive valve block (R) that sets gradually between first electrode slice (5) and second electrode slice (2) in the structure of lightning protection component circuit board module, and hot dropout switching circuit (S), it is characterized in that: between first electrode slice (5) and pressure-sensitive valve block (R), set up discharge tube (B), the current output terminal of discharge tube (B) is connected with the current input terminal of pressure-sensitive valve block (R), and the current output terminal of pressure-sensitive valve block (R) is connected with the current input terminal of hot dropout switching circuit (S).
2. the DC power supply lightning protection device of using in a kind of electric power system according to claim 1, it is characterized in that: described first electrode slice (5) and discharge tube (B) welding, discharge tube (B) and the fixing welding of pressure-sensitive valve block (R), pressure-sensitive valve block (R) welds and is assembled in the cabinet (1) with second electrode slice (2), and cabinet (1) is pegged graft by the socket of plug and base (6).
3. the DC power supply lightning protection device of using in a kind of electric power system according to claim 1, it is characterized in that: described discharge tube (B) is that the nominal through-current capacity is the action of low-voltage pulse gas discharge tube of 10-20KA.
4. the DC power supply lightning protection device of using in a kind of electric power system according to claim 1, it is characterized in that: described pressure-sensitive valve block (R) is that the nominal through-current capacity is the pressure-sensitive valve block of 10-20KA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100535784A CN103296670A (en) | 2012-03-02 | 2012-03-02 | Direct current power supply lightning arrester used for electrical power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100535784A CN103296670A (en) | 2012-03-02 | 2012-03-02 | Direct current power supply lightning arrester used for electrical power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103296670A true CN103296670A (en) | 2013-09-11 |
Family
ID=49097161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100535784A Pending CN103296670A (en) | 2012-03-02 | 2012-03-02 | Direct current power supply lightning arrester used for electrical power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103296670A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492463A (en) * | 2019-09-29 | 2019-11-22 | 厦门赛尔特电子有限公司 | A kind of surge protection device with high breaking capacity |
| CN114864203A (en) * | 2022-06-10 | 2022-08-05 | 浙江元达防雷科技有限公司 | B + C three-phase power supply lightning protection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2744037Y (en) * | 2004-09-23 | 2005-11-30 | 武汉爱劳高科技有限责任公司 | Overheat protector for surge protector |
| CN200941370Y (en) * | 2006-09-01 | 2007-08-29 | 宁波能士通信设备有限公司 | Surge protector |
| CN101588063A (en) * | 2009-06-30 | 2009-11-25 | 成都兴业雷安电子有限公司 | High power low residual voltage lightning protection module |
| CN201608520U (en) * | 2009-11-12 | 2010-10-13 | 深圳市康普盾电子科技有限公司 | Surge protector for power supply |
| CN101950956A (en) * | 2010-11-03 | 2011-01-19 | 英利能源（中国）有限公司 | Lightning-proof electric control device of photovoltaic power generation system |
| CN102082427A (en) * | 2010-12-21 | 2011-06-01 | 上海雷迅防雷技术有限公司 | Surge protector adopting pressure-sensitive chip and graphite sheet in serial connection |
| CN202749812U (en) * | 2012-03-02 | 2013-02-20 | 广东电网公司清远供电局 | Direct-current lightning protection device for electric power system |
-
2012
- 2012-03-02 CN CN2012100535784A patent/CN103296670A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2744037Y (en) * | 2004-09-23 | 2005-11-30 | 武汉爱劳高科技有限责任公司 | Overheat protector for surge protector |
| CN200941370Y (en) * | 2006-09-01 | 2007-08-29 | 宁波能士通信设备有限公司 | Surge protector |
| CN101588063A (en) * | 2009-06-30 | 2009-11-25 | 成都兴业雷安电子有限公司 | High power low residual voltage lightning protection module |
| CN201608520U (en) * | 2009-11-12 | 2010-10-13 | 深圳市康普盾电子科技有限公司 | Surge protector for power supply |
| CN101950956A (en) * | 2010-11-03 | 2011-01-19 | 英利能源（中国）有限公司 | Lightning-proof electric control device of photovoltaic power generation system |
| CN102082427A (en) * | 2010-12-21 | 2011-06-01 | 上海雷迅防雷技术有限公司 | Surge protector adopting pressure-sensitive chip and graphite sheet in serial connection |
| CN202749812U (en) * | 2012-03-02 | 2013-02-20 | 广东电网公司清远供电局 | Direct-current lightning protection device for electric power system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492463A (en) * | 2019-09-29 | 2019-11-22 | 厦门赛尔特电子有限公司 | A kind of surge protection device with high breaking capacity |
| CN114864203A (en) * | 2022-06-10 | 2022-08-05 | 浙江元达防雷科技有限公司 | B + C three-phase power supply lightning protection device |
| CN114864203B (en) * | 2022-06-10 | 2024-01-30 | 浙江元达防雷科技有限公司 | B+C three-phase power lightning arrester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102222893B (en) | A kind of fast failure demand limiter based on current-carrying isolator | |
| CN103779855A (en) | Novel surge protector | |
| CN108365601A (en) | One kind being based on artificial zero passage direct current rapid on-off apparatus | |
| CN102916421A (en) | Transformer protection mechanism | |
| CN103296670A (en) | Direct current power supply lightning arrester used for electrical power system | |
| CN202749812U (en) | Direct-current lightning protection device for electric power system | |
| CN104659784A (en) | Device for suppressing voltage fluctuation of bus in transformer substation and voltage fluctuation suppression method | |
| CN201466675U (en) | Leakage detection protection circuit | |
| CN101944716B (en) | Electricity leakage detection protective circuit | |
| CN203039359U (en) | Starting device of transformer low-voltage side high-speed short-circuit current limiter | |
| CN204205578U (en) | A kind of efficient high-speed current limiting action device | |
| CN203039363U (en) | Three-phase surge protector | |
| CN202633933U (en) | Surge protector circuit of low-voltage power supply | |
| CN203800403U (en) | Multifunctional distribution terminal box | |
| CN203932969U (en) | A kind of low-voltage leakage protector with over-voltage protecting function | |
| CN202473563U (en) | Overcurrent self-protecting transformer | |
| CN102340125B (en) | Novel leakage detection protection circuit | |
| CN201774224U (en) | Novel electric-leakage detection protection circuit | |
| CN203367980U (en) | Distribution box with temperature protection device | |
| CN203387199U (en) | Generator synchronization grid connected automatic apparatus | |
| CN203871682U (en) | High-voltage switching station for nuclear power plant | |
| CN204068206U (en) | The control device of steam turbine jumped by a kind of generator connection | |
| CN201838987U (en) | Automatic reset breaker with high safety | |
| CN203705490U (en) | Short sealing test wire | |
| CN203398544U (en) | Perfect incoming line synchronous grid-connected detection signal device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Lianjiang County Road 511515 in Guangdong province Qingyuan City Qingcheng District No. 18 Applicant after: Qingyuan Power Supple Bureau, Guangdong Power Grid Corporation Applicant after: SHENZHEN COMPTON TECHNOLOGY CO., LTD. Address before: Lianjiang County Road 511515 in Guangdong province Qingyuan City Qingcheng District No. 18 Applicant before: Qingyuan Power Supple Bureau, Guangdong Power Grid Corporation Applicant before: Shenzhen Compton Electronic Technology Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130911 |
|
| RJ01 | Rejection of invention patent application after publication |