CN103715652A - Intelligent backup protection disconnecting device for surge protection devices - Google Patents
Intelligent backup protection disconnecting device for surge protection devices Download PDFInfo
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- CN103715652A CN103715652A CN201410014488.3A CN201410014488A CN103715652A CN 103715652 A CN103715652 A CN 103715652A CN 201410014488 A CN201410014488 A CN 201410014488A CN 103715652 A CN103715652 A CN 103715652A
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Abstract
The invention discloses an intelligent backup protection disconnecting device for surge protection devices. The intelligent backup protection disconnecting device comprises a plurality of surge protection units, a breaker separation device unit and an intelligent measuring and controlling unit, a temperature sensor is installed on a piezoresistor chip of each purse protection device, data of the temperature sensors are transmitted into the intelligent measuring and controlling unit to be processed, once it is detected that the temperatures of the piezoresistor chips exceed a pre-alarm set value, pre-alarm signals are sent out, when the temperatures of the piezoresistor chips exceed a disconnecting threshold value, the intelligent measuring and controlling unit sends disconnecting instructions to the breaker separation device unit, and the thermal protection disconnecting function is achieved. However, when lightning stroke signals are detected, the disconnecting instructions are locked so as to avoid mistakenly disconnecting. When the breaker separation device receives the disconnecting instructions, brake separating is performed on the breaker separation device so as to enable the breaker separation device to be separated from a power grid, thermal insulation dual protection of the pulse protection devices is achieved, therefore, the utilization safety performance of series products of purse protection devices is greatly improved, and major accidents are avoided to the maximum extent.
Description
Technical field
The present invention relates to the technical field of surge protector equipment, relate in particular to a kind of surge protector backup protection intelligence release unit.
Background technology
The research of low-voltage distribution system shocking preventing technology and application is in recent years developed rapidly.Surge protector (SPD) is main protective device, and in SPD, disconnector and voltage dependent resistor chip (MOV) are two parts of core the most.Due to the SPD fault that in use inevitably can be short-circuited; the core devices MOV of limiting voltage type SPD understands ageing failure in addition; if do not taked safeguard procedures, will bring the catastrophic consequences such as fire, so the disconnector of design configurations difference in functionality is greatly important to SPD protection.
Disconnector is a kind of device disconnecting from power-supply system can be SPD degradation failure time, has built-in and two kinds of major functions of external, has heat protection function and excess current protective function.Introduce domestic and international hot release unit technology status and overcurrent disengaging technology status at present below:
1, current domestic and international hot release unit technology status
The disconnector with heat protection function is built-in structure, according to surge protector (SPD) first of GB18802.1-2011 < < low-voltage distribution system: performance requirement and test method > > standard, the requirement in IEC61643.1: A, bear operating duty test ability; B, temporary overvoltage ability; The ability of MOV degradation in C, restriction SPD; D, SPD surface temperature will be lower than 120K.Therefore, the heat protection function of disconnector is that SPD is prerequisite.
The disconnector of heat protection function is mainly to control when MOV is deteriorated to a certain degree in time SPD to be broken from power-supply system.The deteriorated power frequency leakage current that is characterized as of MOV increases.MOV heating aggravation makes caloric value and heat dissipation capacity disequilibrium.When experimental results demonstrate as the deteriorated leakage current > of SPD 40mA, temperature rises and causes burning.
The disconnector of heat protection function is to detect metal electrode place temperature fusing by having material or the element of hot operating chacteristics.Guarantee at SPD shell disconnector deenergization before burning.The disconnected performance materials of hot melt of using is at present low melting point alloy, when low alloy material must have good physical and chemical performance and solderability, there are mechanical strength and temperature characterisitic, because the consistency of low melting point alloy is poor, the discreteness of welding procedure and manufacturing structure craft precision, spring tension, low-temperature alloy adhesion etc., this is all the extremely unsettled reason of current hot disconnector performance.Therefore, often there is the major accident of SPD burning to produce.
2, overcurrent departs from technology status both at home and abroad at present
The overcurrent of SPD departs from for external, generally selects circuit breaker and fuse when SPD is short-circuited fault, to make SPD and electrical network depart from.According to the selection of SPD overcurrent protective device according to discovery.While guaranteeing that lightning current flows through, overcurrent protection is failure to actuate and is had optionally problem of the superior and the subordinate with power supply main switch QF1 and SPD overcurrent protection main switch (hereinafter referred to as surge protector backup protection) QF2, because QF2 is that the SPD fault that is short-circuited shields.And the fault that will be short-circuited is because MOV chip is deteriorated mostly, heat protection disconnector departs from thoroughly and temperature rise burning and the short circuit that causes has accounted for exhausted major part.Therefore, conventional rear protection can only be played the protection after fault, and is maximum defect without the function of external hot protection.
Summary of the invention
Technical problem to be solved by this invention: a kind of surge protector backup protection intelligence release unit with overcurrent protection function and heat protection function is provided for the deficiencies in the prior art.
Technical problem solved by the invention can realize by the following technical solutions:
Surge protector backup protection intelligence release unit, comprising:
Some surge protections unit, the first end interface of one of them surge protector is connected with zero line, and the first end interface of remaining each surge protector all connects with corresponding phase line, and the second end interface of all surge protectors is all connected with ground protection line; Each surge protector has three remote signalling terminals; One temperature sensor is all installed on the voltage dependent resistor chip of each surge protection unit;
One circuit breaker separator unit, described circuit breaker separator unit has first input end mouth, the second input port, shunt opening coil switching signal input port and some by the unified fracture of controlling in described circuit breaker separator unit; Described first input end mouth is attempted by described zero line, and described the second input port is connected in series and is attempted by after a fuse wherein in a described phase line, each fracture all with corresponding described phase line and zero line serial connection; And
One intelligent measurement and control unit, described intelligent measurement and control unit comprises input/output port, display panels and single-chip microcomputer, and described input/output port comprises shunt opening coil switching signal output port, voltage detecting port, deteriorated and temperature detection port, lightning strike signals port and power port; The shunt opening coil switching signal output port of described intelligent measurement and control unit is connected with the shunt opening coil switching signal input port of described circuit breaker separator unit; Described voltage detecting port has some subports, and the subport of each voltage detecting port is attempted by respectively in corresponding described phase line and zero line; Described deteriorated and temperature detection port have three subports, described be deterioratedly connected with the first remote signalling terminal of each surge protection unit respectively with the first subport of temperature detection port, described be deterioratedly connected with the second remote signalling terminal of each surge protection unit respectively with the second subport of temperature detection port, described be deterioratedly connected with the 3rd remote signalling terminal of each surge protection unit respectively with the 3rd subport of temperature detection port; Described lightning strike signals port is connected with described ground protection line; Described power port is electrically connected to external power source.
In a preferred embodiment of the invention, described intelligent measurement and control unit has a RS485 interface, and described intelligent measurement and control unit is connected with host computer by RS485 interface.
In a preferred embodiment of the invention, described intelligent measurement and control unit is connected with 16 surge protectors at most.
In a preferred embodiment of the invention, the shown data of the display panels of described intelligent measurement and control unit comprise output contact open and-shut mode, number of lightning strokes, system voltage state and the system clock of the temperature of the voltage dependent resistor chip of ambient temperature, each surge protection unit, the operating state of all surge protections unit, all surge protections unit.
Owing to having adopted technical scheme as above, beneficial effect of the present invention is: mounting temperature sensor on the voltage dependent resistor chip of each surge protector, the transfer of data of temperature sensor to intelligent measurement and control unit is processed, once the temperature that voltage dependent resistor chip detected, surpass pre-alarm set-point temperature, send pre-alarm signal, when the temperature of voltage dependent resistor chip surpasses disengaging threshold values, intelligent measurement and control unit sends disengaging instruction to circuit breaker separator unit, realizes heat protection detachment function; But while if lightning strike signals being detected, depart from instruction and be blocked, in order to avoid mistake is de-.When circuit breaker separator receives disengaging instruction; circuit breaker separator separating brake and electrical network are departed from; realize the duplicate protection that surge protector heat departs from, this has greatly improved the security performance that surge protector series of products are used, and has farthest avoided the generation of major accident.Intelligent measurement and control unit is connected to host computer, and the operating state that host computer can real-time remote monitoring intelligent measurement and control unit, can be used for the important events such as conference centre, archives, sports center, intelligent building, Intelligent Power Station.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the image of the shown data of display panels of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, the surge protector backup protection intelligence release unit providing in figure, comprises four surge protection unit 110,120,130,140, circuit breaker separator unit 200, intelligent measurement and control unit 300 and host computer 400.
The first end interface of surge protection unit 110,120,130 is connected with phase line L1, L2, L3 respectively; and the first end interface of surge protection unit 140 is connected with zero line N respectively, the second end interface of surge protection unit 110,120,130,140 is all connected with ground protection line PE.Surge protection unit 110,120,130,140 has three remote signalling terminals 111,112,113,121,122,123,131,132,133,141,142,143.On the voltage dependent resistor chip 114,124,134,144 of surge protection unit 110,120,130,140, a temperature sensor 114a, 124a, 134a, 144a are installed.
Circuit breaker separator unit 200 has input port 210,220, shunt opening coil switching signal input port 230 and four fractures 241,242,243,244 by the 200 unified controls of circuit breaker separator, fracture 241,242,243,244 is connected in series with phase line L1, L2, L3 and zero line N, it is upper that input port 210 is attempted by zero line N, after input port 220 serial connection one fuses 250, is attempted by phase line L1.
Intelligent measurement and control unit 300 comprises input/output port, display panels 310 and single-chip microcomputer (not shown).Input/output port comprises shunt opening coil switching signal output port 320, voltage detecting port 330, deteriorated and temperature detection port 340, lightning strike signals port 350, power port 360 and RS485 port.
The shunt opening coil switching signal output port 320 of intelligent measurement and control unit 300 is connected with the shunt opening coil switching signal input port 230 of circuit breaker separator unit 200.Four subports of voltage detecting port 330 tool 331,332,333,334, the subport 331,332,333,334 of voltage detecting port 330 is attempted by respectively on phase line L1, L2, L3 and zero line N.Deteriorated have three subports 341 with temperature detection port 340, 342, 343, the subport 341 of deteriorated and temperature detection port 340 respectively with surge protection unit 110, 120, 130, 140 remote signalling terminal 113, 123, 133, 143 connect, the subport 342 of deteriorated and temperature detection port 340 respectively with surge protection unit 110, 120, 130, 140 remote signalling terminal connects 111, 121, 131, 141, the subport 343 of deteriorated and temperature detection port 340 respectively with surge protection unit 110, 120, 130, 140 remote signalling terminal 112, 122, 132, 142 connect.Lightning strike signals port 350 is connected with ground protection line PE.Power port 360 is electrically connected to external power source.
Referring to Fig. 2, the shown data of display panels 310 of intelligent measurement and control unit 300 comprise temperature 312a, 312b, 312c, 312d, the operating state 313 of surge protector 110,120,130,140, output contact open and-shut mode 314, number of lightning strokes 315, system voltage state 316 and the system clock 317 of surge protector 110,120,130,140 of the voltage dependent resistor chip 114,124,134,144 of ambient temperature 311, surge protector 110,120,130,140.Be positioned at display panels 310 belows and be also provided with five touch screen keys, be respectively menu 318a, displacement 318b, data 318c, inquiry 318d and reset 318e.
When intelligent measurement and control unit 300 monitors surge protection unit 110, 120, 130, 140 voltage dependent resistor chip 114, 124, 134, when 144 temperature surpasses set point, intelligent measurement and control unit 300 sends disengaging instruction by shunt opening coil switching signal output port 320, the shunt opening coil switching signal input port 230 of circuit breaker separator unit 200 receives and departs from instruction, thereby control the fracture 241 in circuit breaker separator 200, 242, 243, 244 disconnect, make surge protection unit 110, 120, 130, 140 depart from electrical network, realize heat protection detachment function.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. surge protector backup protection intelligence release unit, is characterized in that, comprising:
Some surge protections unit, the first end interface of one of them surge protector is connected with zero line, and the first end interface of remaining each surge protector all connects with corresponding phase line, and the second end interface of all surge protectors is all connected with ground protection line; Each surge protector has three remote signalling terminals; One temperature sensor is all installed on the voltage dependent resistor chip of each surge protection unit;
One circuit breaker separator unit, described circuit breaker separator unit has first input end mouth, the second input port, shunt opening coil switching signal input port and some by the unified fracture of controlling in described circuit breaker separator unit; Described first input end mouth is attempted by described zero line, and described the second input port is connected in series and is attempted by after a fuse wherein in a described phase line, each fracture all with corresponding described phase line and zero line serial connection; And
One intelligent measurement and control unit, described intelligent measurement and control unit comprises input/output port, display panels and single-chip microcomputer, and described input/output port comprises shunt opening coil switching signal output port, voltage detecting port, deteriorated and temperature detection port, lightning strike signals port and power port; The shunt opening coil switching signal output port of described intelligent measurement and control unit is connected with the shunt opening coil switching signal input port of described circuit breaker separator unit; Described voltage detecting port has some subports, and the subport of each voltage detecting port is attempted by respectively in corresponding described phase line and zero line; Described deteriorated and temperature detection port have three subports, described be deterioratedly connected with the first remote signalling terminal of each surge protection unit respectively with the first subport of temperature detection port, described be deterioratedly connected with the second remote signalling terminal of each surge protection unit respectively with the second subport of temperature detection port, described be deterioratedly connected with the 3rd remote signalling terminal of each surge protection unit respectively with the 3rd subport of temperature detection port; Described lightning strike signals port is connected with described ground protection line; Described power port is electrically connected to external power source.
2. surge protector backup protection intelligence release unit as claimed in claim 1, is characterized in that, described intelligent measurement and control unit has a RS485 interface, and described intelligent measurement and control unit is connected with host computer by RS485 interface.
3. surge protector backup protection intelligence release unit as claimed in claim 1, is characterized in that, described intelligent measurement and control unit is connected with 16 surge protectors at most.
4. surge protector backup protection as claimed in claim 1 intelligence release unit; it is characterized in that, the shown data of display panels of described intelligent measurement and control unit comprise output contact open and-shut mode, number of lightning strokes, system voltage state and the system clock of the temperature of the voltage dependent resistor chip of ambient temperature, each surge protection unit, the operating state of all surge protections unit, all surge protections unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410014488.3A CN103715652B (en) | 2014-01-13 | 2014-01-13 | Surge protector back-up protection intelligence release unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410014488.3A CN103715652B (en) | 2014-01-13 | 2014-01-13 | Surge protector back-up protection intelligence release unit |
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| CN103715652B CN103715652B (en) | 2016-09-07 |
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Cited By (9)
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| CN105552874A (en) * | 2016-01-29 | 2016-05-04 | 上海雷迅防雷技术有限公司 | Method for judging fault situation of surge protective device by using temperature difference |
| CN106067673A (en) * | 2014-11-10 | 2016-11-02 | 孙麓轩 | A kind of Novel electric surge protector |
| CN108711836A (en) * | 2018-07-02 | 2018-10-26 | 李红斌 | A kind of switching mode SPD of built-in disconnector |
| CN109167342A (en) * | 2018-08-16 | 2019-01-08 | 上海优泰欧申机电有限公司 | Lightning protection monitoring device |
| CN109668594A (en) * | 2018-12-29 | 2019-04-23 | 天津高德朗益科技有限公司 | A kind of Surge Protector having remote signalling warning function |
| CN109713639A (en) * | 2019-03-05 | 2019-05-03 | 浙江雷泰电气有限公司 | A kind of disengaged surge protector of intelligence |
| CN110829394A (en) * | 2019-11-22 | 2020-02-21 | 付世超 | Distribution line fault detection equipment and operation method |
| US10761129B2 (en) | 2018-04-03 | 2020-09-01 | Shimi Nakash | Electrical power supply panel with increased safety through monitoring and control |
| CN113054624A (en) * | 2021-05-10 | 2021-06-29 | 浙江中新电力工程建设有限公司 | Special breaker for intelligent low-voltage surge protector and control method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106067673A (en) * | 2014-11-10 | 2016-11-02 | 孙麓轩 | A kind of Novel electric surge protector |
| CN105552874A (en) * | 2016-01-29 | 2016-05-04 | 上海雷迅防雷技术有限公司 | Method for judging fault situation of surge protective device by using temperature difference |
| CN105552874B (en) * | 2016-01-29 | 2017-12-26 | 上海雷迅防雷技术有限公司 | The method of surge protector trouble situation is judged using the temperature difference |
| US10761129B2 (en) | 2018-04-03 | 2020-09-01 | Shimi Nakash | Electrical power supply panel with increased safety through monitoring and control |
| CN108711836A (en) * | 2018-07-02 | 2018-10-26 | 李红斌 | A kind of switching mode SPD of built-in disconnector |
| CN109167342A (en) * | 2018-08-16 | 2019-01-08 | 上海优泰欧申机电有限公司 | Lightning protection monitoring device |
| CN109668594A (en) * | 2018-12-29 | 2019-04-23 | 天津高德朗益科技有限公司 | A kind of Surge Protector having remote signalling warning function |
| CN109713639A (en) * | 2019-03-05 | 2019-05-03 | 浙江雷泰电气有限公司 | A kind of disengaged surge protector of intelligence |
| CN109713639B (en) * | 2019-03-05 | 2024-03-08 | 浙江雷泰电气有限公司 | Intelligent separation type surge protector |
| CN110829394A (en) * | 2019-11-22 | 2020-02-21 | 付世超 | Distribution line fault detection equipment and operation method |
| CN113054624A (en) * | 2021-05-10 | 2021-06-29 | 浙江中新电力工程建设有限公司 | Special breaker for intelligent low-voltage surge protector and control method thereof |
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|---|---|
| CN103715652B (en) | 2016-09-07 |
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