CN201726122U - Self-powered microcomputer protector capable of fetching electricity on basis of high-voltage current transformer - Google Patents

Self-powered microcomputer protector capable of fetching electricity on basis of high-voltage current transformer Download PDF

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Publication number
CN201726122U
CN201726122U CN2010201719086U CN201020171908U CN201726122U CN 201726122 U CN201726122 U CN 201726122U CN 2010201719086 U CN2010201719086 U CN 2010201719086U CN 201020171908 U CN201020171908 U CN 201020171908U CN 201726122 U CN201726122 U CN 201726122U
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China
Prior art keywords
circuit
alarm signal
master controller
pressure
power supply
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Expired - Fee Related
Application number
CN2010201719086U
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Chinese (zh)
Inventor
王春梅
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王春梅
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Priority to CN2010201719086U priority Critical patent/CN201726122U/en
Application granted granted Critical
Publication of CN201726122U publication Critical patent/CN201726122U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model discloses a self-powered microcomputer protector capable of fetching electricity on the basis of a high-voltage current transformer, which relates to a protector used in the 10-35 KV power transmission and distribution field. The self-powered microcomputer protector is composed of a high-voltage side circuit alarm signal (1), a high-voltage side circuit (2) and a microcomputer protector (12), wherein the high-voltage side circuit (2) comprises a breaker (K1), a breaker (K2), a breaker (K3), a high-voltage current mutual inductor (15), an isolating switch (14) and a tripping coil (11). The microcomputer protector (12) is composed of a switch power supply (3), a sampling circuit (4), an alarm signal detection circuit (5), a filtering operational processor (6), a fault detector (7), a main controller (8), a control key (9) and a signal display (10). The utility model solves the problems that the similar product has poor stability, short use period and high cost, and is not favorable for protecting environment.

Description

Based on the self-powered of the high-tension current inductor power taking protector that declines
Technical field
The utility model relates to the used protective device in 10KV-35KV power transmission and distribution field, utilizes high-tension current inductor to power to microcomputer protecting device, realizes route protection.
Background technology
In 10KV-35KV power transmission and distribution field, all adopt high-tension switch cabinet to cooperate microcomputer protecting device to carry out power transmission and distribution usually.Current high-tension switch cabinet is mainly with the SF6 ring main unit, and loading switch cabinet is inflated cabinet, and cabinet types such as mid-cabinet are main.Traditional power distribution cabinet is by incoming line cabinet, the PT cabinet, and metering cabinet and outlet cabinet constitute, and cooperate active microcomputer protecting device simultaneously.Active microcomputer protecting device need be equipped with accessory power supply, as UPS, and storage battery, direct current cabinet etc.The relevant device that is equipped with is more, and cost is higher.Be used for the accessory power supply (as storage battery) of microcomputer protecting device power supply simultaneously because the defective of himself makes stability and life cycle all can not get ensureing.
In addition, traditional 10KV-35KV power transmission and distribution field, high-tension switch cabinet mostly has the microcomputer protecting device of power supply to monitor and defencive function, need be equipped with corresponding accessory power supply (as storage battery, UPS, direct current cabinet etc.) simultaneously, has increased cost greatly.
The utility model content
The purpose of this utility model provides a kind of self-powered based on high-tension current inductor power taking protector that declines, and the utility model has solved the poor stability that existing like product exists, and is unfavorable for that environmental protection and life cycle are short, and the high problem of cost.
The utility model is made of high-pressure side circuit alarm signal 1, high-pressure side circuit 2 and microcomputer protecting device 12 based on the self-powered of the high-tension current inductor power taking protector that declines; High-pressure side circuit 2 comprises circuit breaker K1, circuit breaker K2, circuit breaker K3, high-tension current inductor 15, isolating switch and switching winding 11; Microcomputer protecting device 12 is made of Switching Power Supply 3, sample circuit 4, alarm signal testing circuit 5 and filtering, amplifier processor 6, tracer 7, master controller 8, control button 9 and Signal Monitor 10;
High-pressure side circuit alarm signal 1 connects alarm signal testing circuit 5, alarm signal testing circuit 5 connects master controller 8, filtering, amplifier processor 6, tracer 7, control button 9, Signal Monitor 10, Switching Power Supply 3 connect master controller 8 respectively, sample circuit 4 connects filtering, amplifier processor 6, and two groups of high-tension current inductors 15 on the high-pressure side circuit 2 connect Switching Power Supply 3 and sample circuit 4 respectively; Switching winding 11 on the high-pressure side circuit 2 connects master controller 8;
Switching Power Supply 3 is obtained energy from high-tension current inductor 15, gives master controller 8 power supplies; Sample circuit 4 by connecting filtering, 6 processing of amplifier processor, is input to master controller 8 from high-tension current inductor 15 sampling electric signals; Alarm signal testing circuit 5 detects the alarm signal by 1 input of high-pressure side circuit alarm signal, is input to after controller 8. master controllers 8 receive the various electric signals of input, carries out the inter-process computing.
Microcomputer protecting device provided by the utility model; with switch power technology; Computer Control Technology; the Protection Technology combination; to make full use of the energy; the saving cost is a prerequisite, and directly obtaining the energy by a high-tension current inductor from the high-tension line mutual inductance is protective device power supply (active microcomputer protecting device only utilizes high-tension current inductor to carry out current measurement), realizes the function of common computer protective device equally.Also can omit the outfit of PT cabinet simultaneously.Has good and economic, practicality and stability.The utility model adopts switch power technology; make full use of the characteristic of high-tension current inductor; when utilizing high-voltage mutual inductor to gather electric parameter; utilizing it is that device is powered; can omit the PT cabinet, accessory power supply (UPS, storage battery; direct current cabinet etc.), can realize the defencive function that power domain is relevant equally.Realized power distribution automation with low-cost pattern, intellectuality also helps environmental protection simultaneously.
Description of drawings
Fig. 1 is the utility model structural representation.
Number in the figure: the circuit 3-Switching Power Supply 4-sample circuit 5-alarm signal testing circuit 6-filtering of circuit alarm signal 2-high-pressure side, 1-high-pressure side, amplifier processor 7-tracer 8-master controller 9-control button 10-Signal Monitor 11-switching winding 12-microcomputer protecting device 13-circuit breaker 14-isolating switch 15-high-tension current inductor
Embodiment
Below in conjunction with accompanying drawing and with illustrated embodiments the utility model is done detailed explanation.
Consult Fig. 1; The utility model is made of high-pressure side circuit alarm signal 1, high-pressure side circuit 2 and microcomputer protecting device 12 based on the self-powered of the high-tension current inductor power taking protector that declines; High-pressure side circuit 2 comprises circuit breaker K1, circuit breaker K2, circuit breaker K3, high-tension current inductor 15, isolating switch and switching winding 11; Microcomputer protecting device 12 is made of Switching Power Supply 3, sample circuit 4, alarm signal testing circuit 5 and filtering, amplifier processor 6, tracer 7, master controller 8, control button 9 and Signal Monitor 10;
High-pressure side circuit alarm signal 1 connects alarm signal testing circuit 5, alarm signal testing circuit 5 connects master controller 8, filtering, amplifier processor 6, tracer 7, control button 9, Signal Monitor 10, Switching Power Supply 3 connect master controller 8 respectively, sample circuit 4 connects filtering, amplifier processor 6, and two groups of high-tension current inductors 15 on the high-pressure side circuit 2 connect Switching Power Supply 3 and sample circuit 4 respectively; Switching winding 11 on the high-pressure side circuit 2 connects master controller 8;
Switching Power Supply 3 is obtained energy from high-tension current inductor 15, gives master controller 8 power supplies; Sample circuit 4 by connecting filter, 6 processing of ripple amplifier processor, is input to master controller 8 from high-tension current inductor 15 sampling electric signals; Alarm signal testing circuit 5 detects the alarm signal by 1 input of high-pressure side circuit alarm signal, is input to after controller 8. master controllers 8 receive the various electric signals of input, carries out the inter-process computing; By tracer (7) detection failure, carry out relevant parameter by control button (9) and set, by Signal Monitor (10) current electric parameter is shown, come tripping circuit breaker (13) by switching winding (11), protect whole distribution line.
The utility model is by master controller (16 low-power consumption type single-chip microcomputers), signals collecting, and signal processing, control is carried out and is waited part to form.Master controller is gathered real-time data signal, carries out signal filtering by internal circuit, and processing and amplifying utilizes the correlation computer algorithm to carry out signal processing by master controller, and the electric signal that collects is shown by liquid crystal display screen.Detect current power network line, the signal of transformer.To the real time data analysis, judge and storage simultaneously.Discovery has fault-signal, and master controller sends sub-gate signal and makes breaker open operation, and protection power equipment, and record trouble reason are convenient to power department and are searched reason.Make distribution automation, intellectuality.
The utility model is gathered the high-voltage electrical apparatus parameter simultaneously by a high-tension current inductor power taking, and as three-phase current, zero-sequence current etc. are monitored some electric signals at electric power scene simultaneously, show the signal of current collection by LCD MODULE.When finding fault, send sub-gate signal,, supply line is disconnected by the switching winding tripping circuit breaker in the external world by this device, thus the protection power equipment.
The high-tension current inductor power taking: according to the mutual inductance principle, conservation of energy principle obtains energy by a high-tension current inductor from high-tension line, and by filtering, processing such as rectification are converted into power supply to device power supply power supply.
Electric signal is gathered: gather current signal by a high-tension current inductor, transform through inner low-voltage current mutual inductor, carry out filtering again, processing and amplifying enters master controller, and master controller carries out signal processing and calculates, and shows by LCD MODULE.
The monitoring of electric signal: the inner photoelectrical coupler that adopts, devices such as relay are that current electrical network is reserved some and opened into amount, in order to monitoring as the too high warning of temperature of oil in transformer, light gas, high temperature, alarm signals such as superhigh temperature warning.Reserve the amount of leaving simultaneously, when finding alarm signal is arranged, in separating brake, the amount of leaving node can send alarm signal.
The preservation of failure logging with check: adopt the Flash memory technology, the CPU Low-power Technology.
When breaking down, external power source disconnects, but the inner high-performance lithium battery of use device this moment is checked failure logging as power supply by LCDs, and failure logging can be stored to the inner Flash of CPU.
Defencive function:: have specified time, inverse time lag curve protection realization defencive function, have zero-sequenceprotection, the fast tripping protection function has the accident alarming function.
The utility model adopts switch power technology, and directly obtaining the energy by a high-tension current inductor from the high-tension line mutual inductance is the protective device power supply, gathers the high-voltage electrical apparatus parameter simultaneously and adopts filtering; amplifier, technology such as A/D sampling are monitored the relevant parameter of current electrical network; as three-phase current, zero-sequence current, temperature of oil in transformer etc.; and the protection of realization syllogic, tranformer protection, separating brake; reclosing, light gas, heavy gas; high temperature alarm, defencive functions such as superhigh temperature warning.Be equipped with remote monitoring simultaneously, make distribution realize unmanned automation, guarantee safely and steadily running of electrical network.
From economic angle, the utility model has saved as direct current cabinet, storage battery, and equipment such as PT cabinet have been saved cost greatly.
On stability and life cycle, the utility model adopts from the principle of high-tension current inductor power taking to the microcomputer protecting device power supply, has directly solved accessory power supply (as storage battery; UPS) life cycle is short; problem of unstable is strengthened controller switching equipment stability greatly, and life cycle increases.
On practicality, the utility model does not have specification requirement to the high-tension current inductor that is adopted, common high-tension current inductor all can, increased practicality and generality greatly.
From the environmental protection aspect, with respect to controller switching equipment in the past, the utility model has omitted the storage battery that pollution is arranged, and has significantly reduced storage battery, and UPS etc. are in use to the pollution of environment.

Claims (1)

1. based on the self-powered of the high-tension current inductor power taking protector that declines, it is characterized in that, constitute by high-pressure side circuit alarm signal (1), high-pressure side circuit (2) and microcomputer protecting device (12); High-pressure side circuit (2) comprises circuit breaker (K1), circuit breaker (K2), circuit breaker (K3), high-tension current inductor (15), isolating switch (14) and switching winding (11); Microcomputer protecting device (12) is made of Switching Power Supply (3), sample circuit (4), alarm signal testing circuit (5) and filtering, amplifier processor (6), tracer (7), master controller (8), control button (9) and Signal Monitor (10); High-pressure side circuit alarm signal (1) connects alarm signal testing circuit (5), alarm signal testing circuit (5) connects master controller (8), filtering, amplifier processor (6), tracer (7), control button (9), Signal Monitor (10), Switching Power Supply (3) connect master controller (8) respectively, sample circuit (4) connects filtering, amplifier processor (6), and the two groups of high-tension current inductors (15) on the high-pressure side circuit (2) connect Switching Power Supply (3) and sample circuit (4) respectively; Switching winding (11) on the high-pressure side circuit (2) connects master controller (8); Switching Power Supply (3) is obtained energy from high-tension current inductor (15), gives master controller (8) power supply; Sample circuit (4) by connecting filtering, amplifier processor (6) processing, is input to master controller (8) from high-tension current inductor (15) sampling electric signal; Alarm signal testing circuit (5) detects the alarm signal by high-pressure side circuit alarm signal (1) input, is input to master controller (8). and master controller (8) carries out the inter-process computing after receiving the various electric signals of input.
CN2010201719086U 2010-04-21 2010-04-21 Self-powered microcomputer protector capable of fetching electricity on basis of high-voltage current transformer Expired - Fee Related CN201726122U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201719086U CN201726122U (en) 2010-04-21 2010-04-21 Self-powered microcomputer protector capable of fetching electricity on basis of high-voltage current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201719086U CN201726122U (en) 2010-04-21 2010-04-21 Self-powered microcomputer protector capable of fetching electricity on basis of high-voltage current transformer

Publications (1)

Publication Number Publication Date
CN201726122U true CN201726122U (en) 2011-01-26

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734365A (en) * 2013-12-20 2015-06-24 国家电网公司 Electromagnetic induction type measuring circuit power supply method and device
CN106300655A (en) * 2015-05-28 2017-01-04 国网河南省电力公司南阳供电公司 Intelligent distribution network open air open circuit supervising device
CN110350495A (en) * 2019-07-11 2019-10-18 南京铁道职业技术学院 A kind of Fuse Type protective relaying device with warning function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104734365A (en) * 2013-12-20 2015-06-24 国家电网公司 Electromagnetic induction type measuring circuit power supply method and device
CN106300655A (en) * 2015-05-28 2017-01-04 国网河南省电力公司南阳供电公司 Intelligent distribution network open air open circuit supervising device
CN110350495A (en) * 2019-07-11 2019-10-18 南京铁道职业技术学院 A kind of Fuse Type protective relaying device with warning function

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Wuhan E-Relay Electric Co., Ltd.

Assignor: Wang Chunmei

Contract record no.: 2012420000104

Denomination of utility model: Self-powered microcomputer protector capable of fetching electricity on basis of high-voltage current transformer

Granted publication date: 20110126

License type: Common License

Record date: 20120815

EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110126

Termination date: 20150421