CN102650669A - Charged detection device of substation equipment - Google Patents

Charged detection device of substation equipment Download PDF

Info

Publication number
CN102650669A
CN102650669A CN2012101590153A CN201210159015A CN102650669A CN 102650669 A CN102650669 A CN 102650669A CN 2012101590153 A CN2012101590153 A CN 2012101590153A CN 201210159015 A CN201210159015 A CN 201210159015A CN 102650669 A CN102650669 A CN 102650669A
Authority
CN
China
Prior art keywords
signal
unit
transformer
current
converting unit
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
Application number
CN2012101590153A
Other languages
Chinese (zh)
Inventor
丁伟民
杨友情
王洋
高志刚
杨大宋
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.)
State Grid Corp of China SGCC
Chizhou Power Supply Co of State Grid Anhui Electric Power Co Ltd
Original Assignee
Chizhou Power Supply Co of State Grid Anhui 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 Chizhou Power Supply Co of State Grid Anhui Electric Power Co Ltd filed Critical Chizhou Power Supply Co of State Grid Anhui Electric Power Co Ltd
Priority to CN2012101590153A priority Critical patent/CN102650669A/en
Publication of CN102650669A publication Critical patent/CN102650669A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a charged detection device of substation equipment. The charged detection device is characterized by comprising a current sensor unit, an I/V (Logarithmic Current-to-Voltage) conversion unit, a signal filtering amplification unit, a signal conditioning unit, an A/D (Analog to Digital) conversion unit, an industrial personal computer unit, a keyboard unit, a display unit and a power supply unit. The charged detection device can simultaneously detect various signals of a substation arrester and a transformer in a charged mode and can carry out real-time data processing and analysis through the industrial personal computer unit. Further, the accuracy and the high efficiency of the status maintenance work of a power supply system are increased, and a reliable guarantee is provided for the normal operation of the power supply system.

Description

A kind of substation equipment measuring device with electricity
Technical field
The present invention relates to a kind of substation equipment measuring device with electricity, particularly a kind of device that carries out charged detection for lightning arrester in the transformer station and transformer.
Background technology
Along with the continuous increase of transformer station's scale and quantity, the quantity of lightning arrester and transformer is more and more, and electric power system repair based on condition of component workload is heavy day by day.The metal current Zinc-Oxide Arrester has good nonlinear characteristic and is widely adopted, but it does not have series connection intermittently, the working voltage that directly bears for a long time in service; Valve block will produce deterioration gradually, and long-time running is made moist easily, and leakage current increased after valve block made moist; Deterioration condition is more serious, and leakage current further increases, and the resistive component in the leakage current produces active loss; The valve block temperature is raise, form thermal runaway and will cause Zinc-Oxide Arrester to damage.Make moist by superpotential, switching overvoltage, insulation owing to bearing for transformer, ground lug processing technology and design reasons such as bad; Cause or multipoint earthing when serious at 2; The loop current that forms between iron core and the earth can reach tens peaces; Cause the transformer core local overheating even burn, the accident that causes through the statistics multipoint earthing of iron core accounts for the front three in the Accident of Transformer.Therefore the service work of transformer station's electric power system is severe day by day, and the lightning arrester and the transformer belt electro-detection Equipment Inspection parameter of producing both at home and abroad at present are single, and every kind of equipment can only single detection lightning arrester or transformer.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point that a kind of substation equipment measuring device with electricity is provided; So that detect the charging operation signal and the multiple signal parameter of transformer station's lightning arrester and transformer simultaneously; Alleviate the workload of electric power system maintenance; Improve the accuracy and the high efficiency of charged detection, guarantee the smooth completion of electric power system repair based on condition of component work.
The present invention adopts following technical scheme for the technical solution problem:
The characteristics of substation equipment measuring device with electricity of the present invention are to comprise:
One current sensor unit; Comprise magnet ring and pickup coil; Be set in said magnet ring on the iron core grounding sheet of connecting line and transformer of arrester discharge counter, gather the charging operation signal of transformer and lightning arrester respectively, and output multichannel current sensing signal;
One comprises the I/V converting unit of micro current amplifier, and said I/V converting unit receives the multichannel current sensing signal of said current sensor unit, and the plurality of voltages signal after the conversion of I/V converting unit inserts follow-up signal filtering amplifying unit;
The one signal filtering amplifying unit that constitutes by filtering and amplifying circuit, the plurality of voltages signal that said signal filtering amplifying unit receives said I/V converting unit carries out filter amplifying processing, the output voltage signal of the high-frequency interferencing signal that is removed;
One includes the signal condition unit of raising level circuit, and said signal condition unit receives the output voltage signal of said signal filtering amplifying unit and raises, and obtains analog voltage signal;
One includes the A/D converting unit of multi-channel A/D conversion chip, and said A/D converting unit converts the analog voltage signal of said signal condition unit output into digital voltage signal;
One industrial computer unit comprises storage hard disk, communication module and CPU; Said industrial computer unit receives the digital voltage signal of said A/D converting unit through data line and analyzes; Obtain full current signal, harmonic signal, local discharge signal and the real component of lightning arrester respectively; And the ground current signal and the local discharge signal of transformer, and said each signal is transferred to display unit through data line show;
One keyboard unit is connected and controls sampling, data analysis and system's setting of said industrial computer unit through data line and said industrial computer unit.
Compared with present technology, beneficial effect of the present invention is embodied in:
1, the present invention has improved the unicity of checkout equipment detected parameters in the past, can realize the multiple signal of charged detection lightning arrester total current and transformer simultaneously, highly versatile, practicality height through the current sensor unit.
2, the present invention can handle and analyze data in real time through the industrial computer unit; Obtain the multiple current signal of lightning arrester and transformer; Realize the real-time measurement and the analysis of multiple parameter, alleviated the workload of system overhaul, improved the accuracy and the high efficiency of electric power system repair based on condition of component work; Be applicable to the repair based on condition of component work of each transformer station's lightning arrester and transformer, guaranteed the normal operation of electric power system.
Description of drawings
Fig. 1 is that pick-up unit of the present invention is formed structural representation;
Fig. 2 is a current sensor cellular construction synoptic diagram among the present invention;
Fig. 3 is I/V conversion unit circuit figure among the present invention;
Fig. 4 is a signal filtering amplifying unit circuit diagram among the present invention;
Fig. 5 is signal condition element circuit figure among the present invention.
Embodiment
As shown in Figure 1.The structure of present embodiment is to comprise:
The current sensor unit comprises magnet ring and pickup coil, and is as shown in Figure 2, and magnet ring is made up of a, b two parts, and pickup coil L1 is last around a, b.Magnet ring is set in the form of opening on the iron core grounding sheet of connecting line and transformer of arrester discharge counter, gathers the charging operation signal of transformer and lightning arrester respectively, and output multichannel current sensing signal;
The I/V converting unit that comprises micro current amplifier; As shown in Figure 3; The negative-feedback circuit that is made up of operational amplifier U1 and resistance R 1 converts the multichannel current sensing signal of I/V converting unit received current sensor unit into the plurality of voltages signal and inserts follow-up signal filtering amplifying unit; Wherein, resistance R 1 decision enlargement factor;
The signal filtering amplifying unit that constitutes by filtering and amplifying circuit; As shown in Figure 4; Operational amplifier U2, electric R2, capacitor C 1, resistance R 3 and R4 constitute active filter amplification circuit; R3/R4 determines enlargement factor, and the plurality of voltages signal that the signal filtering amplifying unit receives the I/V converting unit carries out filter amplifying processing, the output voltage signal of the high-frequency interferencing signal that is removed;
Include the signal condition unit of raising level circuit; As shown in Figure 5; Constitute by resistance R 5, R6, operational amplifier U3, diode D1 and D2 and to raise level circuit, the accept filter output voltage signal of amplifying unit of signal condition unit is raised, obtain analog voltage signal; The signal condition unit allows signal condition to be convenient to the A/D conversion chip and to sample within the scope of reception to the A/D conversion chip;
Include the A/D converting unit of multi-channel A/D conversion chip, said A/D converting unit converts the analog voltage signal of said signal condition unit output into digital voltage signal;
The industrial computer unit comprises storage hard disk, communication module and CPU; The industrial computer unit receives the digital voltage signal of A/D converting unit through data line and analyzes; Obtain full current signal, harmonic signal, local discharge signal and the real component of lightning arrester respectively; And the ground current signal and the local discharge signal of transformer; And each signal is transferred to display unit through data line show that display unit provides the good man-machine interaction interface, can demonstrate the analysis result of all signals intuitively;
Keyboard unit is connected and controls sampling, data analysis and system's setting of said industrial computer unit through data line and said industrial computer unit;
All direct supplys are to be provided by power supply unit in the pick-up unit, and power supply unit is with the input of 220V alternating current as power supply unit, and through the AC/DC change-over circuit, output ± 5V and ± 12V direct current are that pick-up unit is supplied power through power lead respectively.

Claims (1)

1. substation equipment measuring device with electricity is characterized in that comprising:
One current sensor unit; Comprise magnet ring and pickup coil; Be set in said magnet ring on the iron core grounding sheet of connecting line and transformer of arrester discharge counter, gather the charging operation signal of transformer and lightning arrester respectively, and output multichannel current sensing signal;
One comprises the I/V converting unit of micro current amplifier, and said I/V converting unit receives the multichannel current sensing signal of said current sensor unit, and the plurality of voltages signal after the conversion of I/V converting unit inserts follow-up signal filtering amplifying unit;
The one signal filtering amplifying unit that constitutes by filtering and amplifying circuit, the plurality of voltages signal that said signal filtering amplifying unit receives said I/V converting unit carries out filter amplifying processing, the output voltage signal of the high-frequency interferencing signal that is removed;
One includes the signal condition unit of raising level circuit, and said signal condition unit receives the output voltage signal of said signal filtering amplifying unit and raises, and obtains analog voltage signal;
One includes the A/D converting unit of multi-channel A/D conversion chip, and said A/D converting unit converts the analog voltage signal of said signal condition unit output into digital voltage signal;
One industrial computer unit comprises storage hard disk, communication module and CPU; Said industrial computer unit receives the digital voltage signal of said A/D converting unit through data line and analyzes; Obtain full current signal, harmonic signal, local discharge signal and the real component of lightning arrester respectively; And the ground current signal and the local discharge signal of transformer, and said each signal is transferred to display unit through data line show;
One keyboard unit is connected and controls sampling, data analysis and system's setting of said industrial computer unit through data line and said industrial computer unit.
CN2012101590153A 2012-05-21 2012-05-21 Charged detection device of substation equipment Pending CN102650669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101590153A CN102650669A (en) 2012-05-21 2012-05-21 Charged detection device of substation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101590153A CN102650669A (en) 2012-05-21 2012-05-21 Charged detection device of substation equipment

Publications (1)

Publication Number Publication Date
CN102650669A true CN102650669A (en) 2012-08-29

Family

ID=46692713

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012101590153A Pending CN102650669A (en) 2012-05-21 2012-05-21 Charged detection device of substation equipment

Country Status (1)

Country Link
CN (1) CN102650669A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102830319A (en) * 2012-09-18 2012-12-19 辽宁省电力有限公司电力科学研究院 Device and method for on-line inspection on insulation state of zinc oxide arrester
CN103018524A (en) * 2012-11-30 2013-04-03 四川省电力公司内江电业局 Electrification display detection device of high-voltage power system
CN103675615A (en) * 2013-11-13 2014-03-26 国家电网公司 Ultra-wideband detection device for realizing zinc oxide arrester partial discharge detection and method thereof
CN107807266A (en) * 2017-10-31 2018-03-16 国家电网公司 Leakage current of an arrester remote online monitoring system
CN111007435A (en) * 2019-12-27 2020-04-14 广东电网有限责任公司电力科学研究院 Monitoring method, device and equipment for analyzing transformer fault based on resistance-capacitance component

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01321379A (en) * 1988-06-24 1989-12-27 Oki Electric Ind Co Ltd Fault detection system for non-contact dc detector
JPH0915285A (en) * 1995-06-30 1997-01-17 Nippon Densan Setsubi Kk Remote monitoring device of uninterruptible power supply unit
CN1232832C (en) * 2003-12-18 2005-12-21 西安交通大学 Electric power apparatus external insulative leakage current on-line monitoring system in converting station
CN201522541U (en) * 2009-08-03 2010-07-07 成都电业局 Transformer substation electrical equipment on-line monitoring system
CN201845069U (en) * 2010-11-10 2011-05-25 西南交通大学 On-line detection device of insulation stage of capacitive equipment of distributed transformer substation
CN202533537U (en) * 2012-05-21 2012-11-14 安徽省电力公司池州供电公司 Charged detection device for equipment of transformer substation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01321379A (en) * 1988-06-24 1989-12-27 Oki Electric Ind Co Ltd Fault detection system for non-contact dc detector
JPH0915285A (en) * 1995-06-30 1997-01-17 Nippon Densan Setsubi Kk Remote monitoring device of uninterruptible power supply unit
CN1232832C (en) * 2003-12-18 2005-12-21 西安交通大学 Electric power apparatus external insulative leakage current on-line monitoring system in converting station
CN201522541U (en) * 2009-08-03 2010-07-07 成都电业局 Transformer substation electrical equipment on-line monitoring system
CN201845069U (en) * 2010-11-10 2011-05-25 西南交通大学 On-line detection device of insulation stage of capacitive equipment of distributed transformer substation
CN202533537U (en) * 2012-05-21 2012-11-14 安徽省电力公司池州供电公司 Charged detection device for equipment of transformer substation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102830319A (en) * 2012-09-18 2012-12-19 辽宁省电力有限公司电力科学研究院 Device and method for on-line inspection on insulation state of zinc oxide arrester
CN103018524A (en) * 2012-11-30 2013-04-03 四川省电力公司内江电业局 Electrification display detection device of high-voltage power system
CN103675615A (en) * 2013-11-13 2014-03-26 国家电网公司 Ultra-wideband detection device for realizing zinc oxide arrester partial discharge detection and method thereof
CN107807266A (en) * 2017-10-31 2018-03-16 国家电网公司 Leakage current of an arrester remote online monitoring system
CN111007435A (en) * 2019-12-27 2020-04-14 广东电网有限责任公司电力科学研究院 Monitoring method, device and equipment for analyzing transformer fault based on resistance-capacitance component

Similar Documents

Publication Publication Date Title
CN202351412U (en) DC power supply module intelligent detecting system
CN102650669A (en) Charged detection device of substation equipment
CN201141891Y (en) Power consumption collection module
CN202815191U (en) Storage battery internal resistance measuring device
CN205157637U (en) Generator carbon brush current distribution monitoring system
CN103176066B (en) Digitalized electric energy quality monitoring device
CN203337722U (en) Voltage and current collecting device of grid overhead transmission line
CN205404706U (en) Electric automobile fills electric pile's electric energy quality dynamic monitoring system based on DSP
CN203643497U (en) Current detection circuit of photovoltaic system
CN202533537U (en) Charged detection device for equipment of transformer substation
CN102353831A (en) Geomagnetic storm detection and early warning system for protecting safe running of power grid
CN202102046U (en) Harmonic monitor capable of displaying harmonic flow direction
CN202372592U (en) Electric energy quality monitoring instrument
CN201514470U (en) Switch power supply testing instrument
CN203350356U (en) High-voltage user photovoltaic power generation energy metering system
CN205160467U (en) A environmental parameter gather box for photovoltaic power generation system monitoring devices
CN201311485Y (en) Ripple factor detecting device adapted to DC power supply
CN103454486A (en) Lightning arrester performance parameter detecting device
CN205160469U (en) A monitor cell for photovoltaic power generation system monitoring devices
CN202471852U (en) Lightning arrester on-line monitoring device
CN103604977A (en) Lightning current monitoring system based on atmospheric humidity
CN204241574U (en) A kind of power capacitor on-line measurement device
CN203037731U (en) Multi-channel direct-current electric energy meter
CN205176134U (en) Join in marriage net harmonic monitoring facilities
CN204258723U (en) A kind of energy consumption detection system of photovoltaic generation

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: CHIZHOU POWER SUPPLY COMPANY, STATE GRID ANHUI ELE

Effective date: 20140319

Owner name: STATE GRID CORPORATION OF CHINA

Free format text: FORMER OWNER: ANHUI ELECTRIC POWER COMPANY CHIZHOU POWER SUPPLY CO., LTD.

Effective date: 20140319

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 247000 CHIZHOU, ANHUI PROVINCE TO: 100031 XICHENG, BEIJING

TA01 Transfer of patent application right

Effective date of registration: 20140319

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Applicant after: State Grid Corporation of China

Applicant after: CHIZHOU POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER COMPANY

Address before: 247000 No. 88 Jianshe West Road, Anhui, Chizhou

Applicant before: Chizhou Power Supply Company of Anhui Electric Power Corporation

C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120829