CN205982433U - High -pressure shunt capacitance ware overload protection device who possesses on -line monitoring function - Google Patents

High -pressure shunt capacitance ware overload protection device who possesses on -line monitoring function Download PDF

Info

Publication number
CN205982433U
CN205982433U CN201620998983.7U CN201620998983U CN205982433U CN 205982433 U CN205982433 U CN 205982433U CN 201620998983 U CN201620998983 U CN 201620998983U CN 205982433 U CN205982433 U CN 205982433U
Authority
CN
China
Prior art keywords
module
voltage
line monitoring
current
parallel capacitor
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.)
Active
Application number
CN201620998983.7U
Other languages
Chinese (zh)
Inventor
甘景福
王增平
马静
肖志国
朱长荣
姚庆华
单庆元
李爱民
张西术
姚玉永
穆勇
林峰
林一峰
甘书宇
许自刚
张雪枫
赵福旺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING WISDOM TECHNOLOGY Co Ltd
State Grid Corp of China SGCC
North China Electric Power University
Tangshan Power Supply Co of State Grid Jibei Electric Power Co Ltd
Original Assignee
BEIJING WISDOM TECHNOLOGY Co Ltd
State Grid Corp of China SGCC
North China Electric Power University
Tangshan Power Supply Co of State Grid Jibei Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BEIJING WISDOM TECHNOLOGY Co Ltd, State Grid Corp of China SGCC, North China Electric Power University, Tangshan Power Supply Co of State Grid Jibei Electric Power Co Ltd filed Critical BEIJING WISDOM TECHNOLOGY Co Ltd
Priority to CN201620998983.7U priority Critical patent/CN205982433U/en
Application granted granted Critical
Publication of CN205982433U publication Critical patent/CN205982433U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a high -pressure shunt capacitance ware overload protection device who possesses on -line monitoring function belongs to electric power system high pressure shunt capacitance ware operational monitoring and relay protection field. Technical scheme is: relay protection functional module (3) and on -line monitoring functional module (4) are connected respectively to the output of current -voltage collection module (2), and man -machine interaction module (5) and communication module (6) are connected respectively to the output of relay protection functional module (3), and man -machine interaction module (5) and communication module (6) are connected respectively to the output of on -line monitoring functional module (4). The utility model discloses the health status of high -pressure shunt capacitance ware is appraised in real time to the capacitance of real -time calculation high pressure shunt capacitance ware, can promote high -pressure shunt capacitance ware on -line monitoring's technical merit effectively, can extend high -pressure shunt capacitance ware overload protection device's function simultaneously effectively.

Description

A kind of high-voltage parallel capacitor protective relaying device possessing on-line monitoring function
Technical field
This utility model is related to a kind of high-voltage parallel capacitor protective relaying device possessing on-line monitoring function, for right High-voltage parallel capacitor carries out relay protection and on-line monitoring, belongs to power system high-voltage parallel capacitor operational monitoring and relay Protection field.
Background technology
High-voltage parallel capacitor, as a kind of important reactive power source, for improving NETWORK STRUCTURE PRESERVING POWER SYSTEM, improves electric energy matter Amount plays the role of important.High-voltage parallel capacitor is mainly made up of capacitance core and shell.Capacitance core presses rule by dozens of element Fixed series and parallel mode forms a complete entirety, and shell is welded into by sheet metal is curved, and two ends are equipped with propping up of installing for handling Frame, equipped with the binding post of collar supports on cap.Inside the shell is full of the iknsulating liquid of function admirable in addition to fuse.
High-voltage parallel capacitor runs in rated condition for a long time, and the factor such as harmonic wave, overvoltage has bright to its health status Aobvious infringement.Simultaneously with the use of Powerless voltage automatic control system, the switching of high-voltage parallel capacitor is more frequent.Badly Running environment cause high-voltage parallel capacitor fault rate higher.Due to high-voltage parallel capacitor be typically located at low in transformator Pressure side bus, are equivalent to transformator mesolow terminal short-circuit during its fault, transformator can be caused greater impact affect, be unfavorable for The safe operation of transformator.Therefore in real time, the health status of accurate assurance high-voltage parallel capacitor, it is to avoid accident has non- Often urgent necessity.
The fault of high-voltage parallel capacitor be usually from internal connection in series-parallel element abnormal, the fault of Individual elements start by Step develops.When inside high-voltage parallel capacitor, single element occurs exception, fault, the change of its external electrical tolerance is often not Greatly, the voltage that the other elements being healthy inside it bear can increase.With the growth of run time, other health Connection in series-parallel element may occur exception and fault successively due to the impact of bad service condition, finally causes high-voltage parallel capacitor Fault.
The detection method of the high-voltage parallel capacitor commonly used at present mainly has infrared diagnostics and capacitance test.Infrared measurement of temperature Diagnosis cannot effective discovering device internal flaw.Capacitance detection belongs to the test that periodically has a power failure.Its test environment and equipment Actual motion condition variant it is impossible to accurately reflect potential internal flaw.Simultaneously the test interval cycle longer it is impossible to real-time slap Hold high-voltage parallel capacitor health status.
With the development of technology, the method occurring in that high-voltage parallel capacitor on-line monitoring.High by Real-time measuring and analyzing Pressure shnt capacitor capacitance, to grasp high-voltage parallel capacitor health status, and sends out in shnt capacitor inner member Raw abnormal, fault, but send alarm in time when shnt capacitor does not integrally break down, prevent from being finally evolved into shnt capacitor Fault, it is to avoid high-voltage parallel capacitor equipment itself damages, reduces and power system and miscellaneous equipment is impacted.Its realization side Method is usually to install core through type current transformer on capacitor connecting sleeve, in order to measure the electric current flowing through capacitor.In height Voltage transformer or discharge coil are installed, in order to measure the voltage of capacitor two interpolar between the terminal of pressure shnt capacitor the two poles of the earth.Electricity Pressure and electric current pass to calculation control unit by way of wired or wireless.Calculation control unit using measurement gained voltage and Electric current is calculating capacitance, and according to electric capacitance change situation, high-voltage parallel capacitor health status is estimated.This side Method primary disadvantage is that and increased other adnexaes in shunt reactor body.Adnexa operates in the adverse circumstances of high field intensity, high temperature In easily break down, the overall maintenance of the equipment that increases, and Electric Field Distribution can be caused to change, to high-voltage parallel capacitor this The normal operation of body brings adverse effect.Still an alternative is that the high-voltage parallel using measurement in power scheduling SCACD system Condenser current, voltage data, calculate high-voltage parallel capacitor capacitance, thus judging its health status.The master of this method Shortcoming is wanted to be that the data in power scheduling SCACD system is not real time data, same period etc. does not ask also to there is electric current, voltage sample Topic.
High-voltage parallel capacitor protective relaying device, is when high-voltage parallel capacitor there occurs that fault jeopardizes power system peace During row for the national games, can send warning signal in time to operator, or directly send tripping operation to the chopper being controlled Order is to terminate a kind of measure of automatization and the equipment of the development of these events.Existing high-voltage parallel capacitor relay protection dress Put, be all to cross the electric current of high-voltage parallel capacitor using the real-time measurement stream of current transformer installed, using being arranged on bus Voltage transformer or being connected in parallel on the discharge coil of high-voltage parallel capacitor two interpolar measures high-voltage parallel capacitor two in real time The voltage of interpolar.The feature that can be changed using electric current, voltage during high-voltage parallel capacitor fault, is surpassed by comparing electric current Cross the method that setting valve or differential pressure, unbalance voltage exceed setting valve, judge that high-voltage parallel capacitor breaks down, thus to The chopper being controlled sends trip signal excision fault.The high-voltage parallel capacitor protective relaying device using both at home and abroad at present All do not possess the function of on-line monitoring.
Utility model content
The purpose of this utility model is to provide a kind of high-voltage parallel capacitor relay protection dress possessing on-line monitoring function Put, complete the state estimation of high-voltage parallel capacitor, so that high-voltage parallel capacitor protective relaying device is possessed simple, efficient, complete Kind high-voltage parallel capacitor on-line monitoring function, finds high-voltage parallel capacitor fault trend in time, solves in background technology There are the problems referred to above.
This utility model purpose is realized by techniques below scheme:
A kind of high-voltage parallel capacitor protective relaying device possessing on-line monitoring function, comprises:Current/voltage gathers mould Block, relay protection function module, on-line monitoring functional module, human-computer interaction module, communication module;Current/voltage acquisition module Outfan connects relay protection function module and on-line monitoring functional module respectively, and the outfan of relay protection function module is respectively Connect human-computer interaction module and communication module, the outfan of on-line monitoring functional module connects human-computer interaction module and communication respectively Module.
Described on-line monitoring functional module and relay protection function module common current voltage acquisition module, man-machine interaction Module and communication module.
Described current/voltage acquisition module, its input connects current transformer and voltage acquisition equipment, input electricity respectively Stream, the analogue signal of voltage;Outfan connects relay protection function module and on-line monitoring functional module respectively;Realize high pressure simultaneously The Real-time Collection of connection condenser current and voltage and calculating.
Described voltage acquisition equipment, is discharge coil or voltage transformer.
Described relay protection function module, accepts the signal from current/voltage acquisition module, carries out current/voltage value Calculate, and complete relay protection function.
Described on-line monitoring functional module, accepts the signal from current/voltage acquisition module, carries out current/voltage value Calculate, and then calculate the capacitance of shnt capacitor, by comparing with predetermined capacitive amount setting valve, judge high-voltage parallel capacitor Health status.
Good effect of the present utility model is:Calculate the capacitance of high-voltage parallel capacitor in real time, Real-Time Evaluation high pressure is simultaneously The health status of connection capacitor, whether on cost, still functionally all have obvious advantage than prior art, Ke Yiyou The technical merit of effect ground lifting high-voltage parallel capacitor on-line monitoring, can simultaneously be effectively expands high-voltage parallel capacitor relay The function of protection device.
Brief description
Fig. 1 is this utility model example structure schematic diagram.
In figure:Protective relaying device 1, current/voltage acquisition module 2, relay protection function module 3, on-line monitoring function mould Block 4, human-computer interaction module 5, communication module 6, voltage transformer 7, discharge coil 8, current transformer 9, monitoring system 10;
Fig. 2 is this utility model embodiment one mode of connection schematic diagram;
In figure:Discharge coil 8, current transformer 9, high-voltage parallel capacitor 11, current-limiting reactor 12;
Fig. 3 is this utility model embodiment two mode of connection schematic diagram;
In figure:Voltage transformer 7, current transformer 9, high-voltage parallel capacitor 11, current-limiting reactor 12.
Specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail.
A kind of high-voltage parallel capacitor protective relaying device possessing on-line monitoring function, comprises:Current/voltage gathers mould Block, relay protection function module, on-line monitoring functional module, human-computer interaction module, communication module;Current/voltage acquisition module Outfan connects relay protection function module and on-line monitoring functional module respectively, and the outfan of relay protection function module is respectively Connect human-computer interaction module and communication module, the outfan of on-line monitoring functional module connects human-computer interaction module and communication respectively Module.
Described on-line monitoring functional module 4 and relay protection function module 3 common current voltage acquisition module 2, man-machine Interactive module 5 and communication module 6.
Described current/voltage acquisition module 2, its input connects current transformer and voltage acquisition equipment, input electricity respectively Stream, the analogue signal of voltage;Outfan connects relay protection function module 3 and on-line monitoring functional module 4 respectively;Realize high pressure The Real-time Collection of shnt capacitor electric current and voltage and calculating.
Described voltage acquisition equipment, is discharge coil or voltage transformer.
Described relay protection function module, accepts the signal from current/voltage acquisition module, carries out current/voltage value Calculate, and complete relay protection function.
Described on-line monitoring functional module, accepts the signal from current/voltage acquisition module, carries out current/voltage value Calculate, and then calculate the capacitance of shnt capacitor, by comparing with predetermined capacitive amount setting valve, judge high-voltage parallel capacitor Health status.
Embodiment one, referring to the drawings 1,2.
A kind of high-voltage parallel capacitor protective relaying device possessing on-line monitoring function, comprises:Current/voltage gathers mould Block 2, relay protection function module 3, on-line monitoring functional module 4, human-computer interaction module 5, communication module 6;Current/voltage gathers The outfan of module 2 connects relay protection function module 3 and on-line monitoring functional module 4 respectively, relay protection function module 3 Outfan connects human-computer interaction module 5 and communication module 6 respectively, and the outfan of on-line monitoring functional module 4 connects man-machine respectively Interactive module 5 and communication module 6.The outfan of communication module 6 connects monitoring system 10.
Discharge coil 8 is connected in parallel on the two ends of high-voltage parallel capacitor 11, and the outfan of discharge coil 8 connects current/voltage and adopts The voltage input end of collection module 2, as voltage input signal;The outfan of current transformer 9 connects current/voltage acquisition module 2 Current input terminal, as current input signal.Current and voltage signals are transferred to relay and protect by current/voltage acquisition module 2 respectively Protective function module 3 and on-line monitoring functional module 4.Relay protection function module 3 calculates corresponding current/voltage, and completes relay Defencive function.On-line monitoring functional module 4 calculates the electric current of corresponding high-voltage parallel capacitor, magnitude of voltage, and and then calculates high The capacitance of pressure shnt capacitor.
For the mode of connection shown in accompanying drawing 2, its voltage takes from discharge coil 8.The formula that capacitance calculates is shown in formula(1), In formula, f is frequency, and I is electric current, and U is voltage.
On-line monitoring functional module 4, according to calculated capacitance value, by comparing with default setting valve, judges high The health status of pressure shnt capacitor.In on-line monitoring functional module 4, preset in advance high-voltage parallel capacitor 11 capacitance is whole Definite value and tolerance value.Capacitance presets setting valve typically using the electric capacitance measurement value having a power failure when testing, deviation allowable value The certainty of measurement factor of protective relaying device need to be considered and retain adequate allowance.When the capacitance value calculating gained and electricity When deviation between capacity setting valve is less than deviation allowable value, judge that high-voltage parallel capacitor health status are normal.When calculating institute When deviation between the capacitance value obtaining and capacitance setting valve is more than deviation allowable value, judge high-voltage parallel capacitor health Situation is abnormal.
The high-voltage parallel capacitor health status that on-line monitoring functional module 4 draws, man-machine by protective relaying device Interactive module 5 is shown, and delivers to monitoring system 10 by the communication module 6 of protective relaying device.
Embodiment two, referring to the drawings 1,3.
Voltage transformer 7 is arranged on the bus that high-voltage parallel capacitor is connected, and the outfan of voltage transformer 7 connects The voltage input end of current/voltage acquisition module 2, as voltage input signal;The outfan of current transformer 9 connects electric current electricity The current input terminal of pressure acquisition module 2, as current input signal.Current/voltage acquisition module 2 is by current and voltage signals respectively It is transferred to relay protection function module 3 and on-line monitoring functional module 4.Relay protection function module 3 gathers according to current/voltage The input of module 2 calculates corresponding current/voltage, and completes relay protection function.On-line monitoring functional module 4 is according to electric current electricity The input of pressure acquisition module 2, calculates electric current, the magnitude of voltage of corresponding high-voltage parallel capacitor, and and then calculates high-voltage parallel electricity Capacity of condenser.
For the mode of connection shown in accompanying drawing 3, its voltage takes from voltage transformer 7.Capacitance computing formula is shown in formula(2), In formula, f is frequency, and I is electric current, and U is voltage, and L is current-limiting reactor inductance.
On-line monitoring functional module 4, according to calculated capacitance value, by comparing with default setting valve, judges high The health status of pressure shnt capacitor.In on-line monitoring functional module 4, preset in advance high-voltage parallel capacitor capacitance is adjusted Value and tolerance value.Capacitance presets setting valve typically using the electric capacitance measurement value having a power failure when testing, and deviation allowable value needs Consider the certainty of measurement factor of protective relaying device and retain adequate allowance.When the capacitance value calculating gained and electric capacity When deviation between amount setting valve is less than deviation allowable value, judge that high-voltage parallel capacitor health status are normal.When calculating gained Capacitance value and capacitance setting valve between deviation be more than deviation allowable value when, judge high-voltage parallel capacitor health shape Condition is abnormal.
The high-voltage parallel capacitor health status that on-line monitoring functional module 4 draws, man-machine by protective relaying device Interactive module 5 is shown, and delivers to monitoring system 10 by the communication module 6 of protective relaying device.

Claims (4)

1. a kind of high-voltage parallel capacitor protective relaying device possessing on-line monitoring function, comprises:Current/voltage acquisition module (2), relay protection function module(3), on-line monitoring functional module(4), human-computer interaction module(5), communication module(6);Electric current Voltage acquisition module(2)Outfan connect relay protection function module respectively(3)With on-line monitoring functional module(4), relay Defencive function module(3)Outfan connect human-computer interaction module respectively(5)And communication module(6), on-line monitoring functional module (4)Outfan connect human-computer interaction module respectively(5)And communication module(6).
2. a kind of high-voltage parallel capacitor protective relaying device possessing on-line monitoring function according to claim 1, its It is characterised by:Described on-line monitoring functional module(4)With relay protection function module(3)Common current voltage acquisition module (2), human-computer interaction module(5)And communication module(6).
3. a kind of high-voltage parallel capacitor protective relaying device possessing on-line monitoring function according to claim 1, its It is characterised by:Described current/voltage acquisition module(2), its input connects current transformer and voltage acquisition equipment respectively.
4. a kind of high-voltage parallel capacitor protective relaying device possessing on-line monitoring function according to claim 3, its It is characterised by:Described voltage acquisition equipment, is discharge coil or voltage transformer.
CN201620998983.7U 2016-08-31 2016-08-31 High -pressure shunt capacitance ware overload protection device who possesses on -line monitoring function Active CN205982433U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620998983.7U CN205982433U (en) 2016-08-31 2016-08-31 High -pressure shunt capacitance ware overload protection device who possesses on -line monitoring function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620998983.7U CN205982433U (en) 2016-08-31 2016-08-31 High -pressure shunt capacitance ware overload protection device who possesses on -line monitoring function

Publications (1)

Publication Number Publication Date
CN205982433U true CN205982433U (en) 2017-02-22

Family

ID=58042486

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620998983.7U Active CN205982433U (en) 2016-08-31 2016-08-31 High -pressure shunt capacitance ware overload protection device who possesses on -line monitoring function

Country Status (1)

Country Link
CN (1) CN205982433U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106990305A (en) * 2017-04-13 2017-07-28 山东汇能电气有限公司 The dry-type air-core reactor on-line monitoring method of high-voltage power capacitor complexes
CN106990304A (en) * 2017-04-13 2017-07-28 山东汇能电气有限公司 Power capacitor running status on-line monitoring method based on capacitance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106990305A (en) * 2017-04-13 2017-07-28 山东汇能电气有限公司 The dry-type air-core reactor on-line monitoring method of high-voltage power capacitor complexes
CN106990304A (en) * 2017-04-13 2017-07-28 山东汇能电气有限公司 Power capacitor running status on-line monitoring method based on capacitance

Similar Documents

Publication Publication Date Title
CN103490511B (en) A kind of power distribution network communication terminal detection system and method
CN106168638A (en) A kind of method utilizing protective relaying device to realize high-voltage parallel capacitor on-line monitoring
CN102944811B (en) Detection method of transformer winding deformation
CN203084097U (en) On-line zinc oxide lightning arrester state monitoring device
CN103887888B (en) A kind of fuse on-line monitoring system
CN102628905A (en) Fault recognition device of high-voltage capacitance type equipment and application device thereof
CN110967627B (en) Distributed monitoring system and monitoring method for 10kV vacuum circuit breaker
CN205982433U (en) High -pressure shunt capacitance ware overload protection device who possesses on -line monitoring function
CN203838236U (en) Device for detecting electric crossing of direct-current system
CN110389276A (en) A kind of singlephase earth fault management system and method
CN204374346U (en) The pick-up unit of battery pack earth point, DC power system
CN105486917A (en) Method for detecting energy-efficient power transmission line loss and faults
CN204179751U (en) For the protective relaying device that control loop digitlization monitors
CN206313534U (en) Bar rack type becomes radio station monitoring device
CN106501572B (en) High voltage DC breaker shunt capacitor out-of-balance current monitoring device and method
CN107884645A (en) Based on voltage ratio compared with power capacitor method for monitoring operation states
CN101718813B (en) Method for monitoring voltage acquisition circuit of electric power secondary system
CN203274673U (en) Equipment for on-line supervision over deformation of transformer winding
CN204271630U (en) Power distribution network PT Intelligent resonance suppression device
CN203164360U (en) Transformer device insulation online monitoring system
CN104020393B (en) A kind of with electrical network one-phase short-circuit current Fault Locating Method
CN106597116A (en) Compensating capacitor capacitance online monitoring device and method
CN209561923U (en) A kind of intelligence type railway weak electricity system power lightning protection power distribution equipment
CN2498614Y (en) Automatic capacitor online monitor
CN208654255U (en) A kind of multi-functional Reactor Fault on-Line Monitor Device

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CB03 Change of inventor or designer information

Inventor after: Gan Jingfu

Inventor after: Yao Yuyong

Inventor after: Mu Yong

Inventor after: Lin Yifeng

Inventor after: Gan Shuyu

Inventor after: Xu Zigang

Inventor after: Zhang Xuefeng

Inventor after: Zhao Fuwang

Inventor after: Wang Zengping

Inventor after: Ma Jing

Inventor after: Xiao Zhiguo

Inventor after: Zhu Changrong

Inventor after: Yao Qinghua

Inventor after: Dan Qingyuan

Inventor after: Li Aimin

Inventor after: Zhang Xishu

Inventor before: Gan Jingfu

Inventor before: Yao Yuyong

Inventor before: Mu Yong

Inventor before: Lin Yifeng

Inventor before: Gan Shuyu

Inventor before: Xu Zigang

Inventor before: Zhang Xuefeng

Inventor before: Zhao Fuwang

Inventor before: Wang Zengping

Inventor before: Ma Jing

Inventor before: Xiao Zhiguo

Inventor before: Zhu Changrong

Inventor before: Yao Qinghua

Inventor before: Dan Qingyuan

Inventor before: Li Aimin

Inventor before: Zhang Xishu

CB03 Change of inventor or designer information