CN105929249A - Reactive power compensation device capacitance measuring device - Google Patents

Reactive power compensation device capacitance measuring device Download PDF

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Publication number
CN105929249A
CN105929249A CN201610435448.5A CN201610435448A CN105929249A CN 105929249 A CN105929249 A CN 105929249A CN 201610435448 A CN201610435448 A CN 201610435448A CN 105929249 A CN105929249 A CN 105929249A
Authority
CN
China
Prior art keywords
module
data
reactive
electric capacity
measurement
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
CN201610435448.5A
Other languages
Chinese (zh)
Inventor
龚晨斌
石峰
董军
裴玉杰
李险峰
黄东伟
方勃
李天赐
郭岚
杨蕊
徐建国
李娜
岳子尧
石岩
乔博宇
南洋
王淼
李然
李一然
老永刚
张鸣
张磊
胡洋
程硕
郝文峰
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
State Grid Liaoning Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Liaoning 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 State Grid Corp of China SGCC, State Grid Liaoning Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201610435448.5A priority Critical patent/CN105929249A/en
Publication of CN105929249A publication Critical patent/CN105929249A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605Measuring capacitance
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

Abstract

The invention relates to a reactive power compensation device capacitance measuring device which comprises a control module, a measuring module, an inversion power supply module, a liquid crystal display module and a data printing module. The control module is connected with the measuring module, the inversion power supply module, the liquid crystal display module and the data printing module. The device uses microcomputer control, and uses a real-time high-speed sampling technology and a modern power electronic technology. Without removing a capacitor group lead, the capacitance of a capacitor group can be quickly and accurately measured. The device is provided with a built-in rechargeable power supply, and has the advantages of high measurement accuracy and good reproducibility. The device uses an integrated structure, and has the advantages of light weight and being portable.

Description

Reactive-load compensation equipment electric capacity measuring device
Technical field
The present invention relates to a kind of power system Capacitor banks field adjustable, particularly relate to a kind of nothing do not torn open and draw Capacitor banks Merit compensates device capacitances measuring device, is mainly used in Capacitor banks field adjustable in power system, belongs to electric power application.
Background technology
High-voltage capacitor plays a part to provide idle, filter harmonic wave and improve power quality, is important in electric substation Reactive-load compensation equipment, but be in operation often due to the damage of one or two capacitor and cause whole group capacitor to exit fortune OK, the properly functioning of power system is had a strong impact on.At present, the most of unit of conventional test methodologies uses digital capacitance meter or voltage Current method measures condenser capacitance value.Digital capacitance meter typically uses internal battery as power supply, and output voltage is low and is easily subject to The impact of battery electric quantity, causes to measure and is forbidden and causing trouble recall rate is low, further, since the residual charge effect of capacitor, Instrument is made often to damage.And voltage x current method cannot be distinguished by the resistive of capacitor and capacitive component, equipment is heavy, wiring repeats, Extremely inefficient.More seriously, all above method of testing, it is both needed to after removing capacitor lead wire measure, after being completed Recover lead-in wire again, not only need to put into a large amount of manpower, be also easy to when disconnecting lead-in wire damage Capacitor banks.Therefore, it is necessary to grind System is a kind of measures Capacitor banks test device in the case of Capacitor banks is not torn open and drawn.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, it is provided that one is not torn open and drawn Capacitor banks test device, Solve and prior art needs remove the problem that capacitor measured by lead-in wire.
Technical scheme is as follows:
Test device, including control module, measurement module, Inverter, LCD MODULE, data-printing module, control Molding block connects measurement module, Inverter, LCD MODULE, data-printing module respectively;Measurement module receives control The instruction that molding block sends, completes by the collection of electricity testing device voltage and current and measurement, and sends test data to control mould Block;Inverter provides power supply to each module;LCD MODULE display current operating state, checking parameter and measurement knot Really data;Data-printing module printing test condition and test data.
Described control module realizes controlling function, the output of all instructions and collection with single-chip microcomputer for core processor Sent by control module.
The signal exported through voltage transformer summation current transformer is done the complete cycle of real time high-speed by described single-chip microcomputer The data of sampling are existed in data storage by synchronized sampling.
Described measurement module is made up of Arduino voltage measurement module and current measurement module, and measurement module passes through Inverse inserting-preventing 3P sensor connecting line is plugged into Arduino sensor expansion board.
Described Inverter uses DC/AC/ Industrial Frequency Transformer, two stage power transform framework, have overvoltage/undervoltage, Cross stream and overheat protective function.
Described LCD MODULE uses resolution 128*64 dot matrix single colour liquid crystal display.
Described data-printing module uses SP-A series mini impact printer.
Advantages of the present invention effect is as follows:
This device have employed microcomputer control, has used real time high-speed Sampling techniques and modern power electronics technology, has quick and precisely obtained To measurement result, certainty of measurement is high, reproducible.Device use integral structure have lightweight, the advantage such as be easy to carry.? Applying respond well in actual production, reach time saving and energy saving test data and design requirement accurately, technical specification reaches design and wants Asking, function meets actual requirement, lightweight, easily carries, easy-to-connect, and on-the-spot occupation of land is few, easily guards, brings to safety in production Ensure.In capacitor is tested, play positive effect, make capacitor test simplify, improve work efficiency and the peace of test Full reliability.
Accompanying drawing explanation
Fig. 1 is test philosophy schematic block diagram of the present invention.
Fig. 2 is the structural schematic block diagram of the present invention.
Fig. 3 a, 3b are wiring construction schematic diagram of the present invention.
Detailed description of the invention
Embodiment
Test device, including control module, measurement module, Inverter, LCD MODULE, data-printing mould Block, control module connects measurement module, Inverter, LCD MODULE, data-printing module respectively;Measurement module connects Receive the instruction that sends of control module, complete by the collection of electricity testing device voltage and current and measurement, and send test data to control Molding block;Inverter provides power supply to each module;LCD MODULE display current operating state, checking parameter and survey Amount result data;Data-printing module printing test condition and test data.
Described control module realizes controlling function, the output of all instructions and collection with single-chip microcomputer for core processor Control module is all had to send.
Described measurement module is made up of Arduino voltage measurement module and current measurement module, and module passes through anti-plug Anti-3P sensor connecting line is plugged into Arduino sensor expansion board, is possible not only to realize the inspection to voltage x current electricity size Survey, it is also possible to by the change procedure of Liquid Crystal Module display voltage x current.After control module sends instruction, remove finishing device The collection of voltage and current and measurement, and send test data to control module.
Described Inverter is the comprehensive power system of device, uses DC/AC/ Industrial Frequency Transformer, two stage power Transform framework, has overvoltage/undervoltage, crosses stream and overheat protective function, control chip HT3117, driving chip IR2110, and this module is adopted By the scheme of input and output isolation, it not only completes city and supplies electricity to the function of lithium electricity charging, may also provide the test power supply of device System.
Described LCD MODULE uses resolution 128*64 dot matrix single colour liquid crystal display, can clearly show Chinese And figure, and carry backlight, all can clearly display instrument current operating state, checking parameter and measurement under various light conditions The data such as result.Good environmental adaptability, all can normally work in-5 DEG C ~ 45 DEG C temperature ranges.
Described data-printing module uses SP-A series mini impact printer, can print all test conditions and examination Test printer and have that volume is little, lightweight, complete function, at high speed, high-resolution, the advantage such as simple to operate, easy to connect.
Described control module is to have used real time high-speed Sampling techniques under the control of single-chip microcomputer, to output voltage electric current Signal is acquired, and calculates, and measurement result is sent to motherboard.Single-chip microcomputer will be through voltage transformer summation current transformer The signal of output does synchronized sampling complete cycle of real time high-speed, exists in data storage by the data of sampling, then according to electricity Engineering principle calculates the virtual value of electric capacity, voltage, electric current, and power and the result of power factor (PF).
Described inverter has used digital waveform synthetic technology and high-power SPWM pulse modulation technology, it is achieved that 50Hz, the sinusoidal ac output of 0~18V.Output voltage can be adjusted by instrument internal automatically according to load.Digital wave The principle of shape synthesis, as it can be seen, the pulse that produced by clock generator, goes actuation counter, enumerator output to be used for scanning ripple The address wire of graphic data ROM, so exists the data output of sinusoidal variations in ROM to the input of D/A converter the most successively The outfan of D/A converter can be obtained by the analogue signal of a sinusoidal variations, exports via isolating transformer.
The present invention can use the internal output of device or civil power to do experiment power supply.The output of its Two-port netwerk is added in test product the two poles of the earth, so After forcipated mutual-inductor is enclosed within measured capacitance device sleeve pipe, gather signal.Instrument provides one to stablize by voltage output end mouth Voltage source, after the current signal in forcipated mutual-inductor collecting test loop, circuit after filtering, sampling hold circuit, will letter Number waveform standardization.The digital signal that can calculate is formed through A/D converter.Finally by numeral model through routine processes Rear display is on liquid crystal.
The technical specification reached is as follows:
Overall dimensions: l × b × h, mm:380 × 260 × 160.
Installation weight: 7.
Voltage output range: AC 0~18V(or additional experimental power supply).
Capacitive measurement scales: 1~2000 F.
Capacitance measurement precision: 1% ± 3 word.
Voltage measurement scope: AC 0~450V.
Current measuring range: AC 0~5A.

Claims (7)

1. reactive-load compensation equipment electric capacity measuring device, it is characterised in that include control module, measurement module, inverter mould Block, LCD MODULE, data-printing module, control module connects measurement module, Inverter, liquid crystal display mode respectively Block, data-printing module;Measurement module receives the instruction that sends of control module, complete by the collection of electricity testing device voltage and current and Measure, and send test data to control module;Inverter provides power supply to each module;LCD MODULE shows Current operating state, checking parameter and measurement result data;Data-printing module printing test condition and test data.
Reactive-load compensation equipment electric capacity measuring device the most according to claim 1, it is characterised in that described control module Realizing controlling function with single-chip microcomputer for core processor, output and the collection of all instructions are sent by control module.
Reactive-load compensation equipment electric capacity measuring device the most according to claim 2, it is characterised in that described single-chip microcomputer will Signal through the output of voltage transformer summation current transformer does synchronized sampling complete cycle of real time high-speed, the data of sampling is deposited In data storage.
Reactive-load compensation equipment electric capacity measuring device the most according to claim 1, it is characterised in that described measurement module Being made up of Arduino voltage measurement module and current measurement module, measurement module is inserted by inverse inserting-preventing 3P sensor connecting line Receive Arduino sensor expansion board.
Reactive-load compensation equipment electric capacity measuring device the most according to claim 1, it is characterised in that described inverter Module uses DC/AC/ Industrial Frequency Transformer, two stage power transform framework, has overvoltage/undervoltage, crosses stream and overheat protective function.
Reactive-load compensation equipment electric capacity measuring device the most according to claim 1, it is characterised in that described liquid crystal display Module uses resolution 128*64 dot matrix single colour liquid crystal display.
Reactive-load compensation equipment electric capacity measuring device the most according to claim 1, it is characterised in that described data-printing Module uses SP-A series mini impact printer.
CN201610435448.5A 2016-06-18 2016-06-18 Reactive power compensation device capacitance measuring device Pending CN105929249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610435448.5A CN105929249A (en) 2016-06-18 2016-06-18 Reactive power compensation device capacitance measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610435448.5A CN105929249A (en) 2016-06-18 2016-06-18 Reactive power compensation device capacitance measuring device

Publications (1)

Publication Number Publication Date
CN105929249A true CN105929249A (en) 2016-09-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106405251A (en) * 2016-11-10 2017-02-15 中国南方电网有限责任公司超高压输电公司检修试验中心 Wireless distributed capacitor inductor test apparatus and application

Citations (9)

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Publication number Priority date Publication date Assignee Title
CN202002977U (en) * 2011-03-21 2011-10-05 江苏省电力公司无锡供电公司 Measuring device for measuring capacitance of shunt capacitor group
CN203204051U (en) * 2013-04-25 2013-09-18 河北超联电子科技有限公司 Portable capacitance current tester
JP5578573B2 (en) * 2011-05-06 2014-08-27 中国電力株式会社 DC circuit insulation resistance measuring device, capacitance measuring device, insulation resistance measuring method and capacitance measuring method
CN104569687A (en) * 2015-01-20 2015-04-29 国家电网公司 Capacitor bank fault detector
CN204925237U (en) * 2015-08-31 2015-12-30 广西科技大学鹿山学院 USB current -voltage power monitoring devices
CN204989317U (en) * 2015-09-08 2016-01-20 广西电网有限责任公司防城港供电局 Novel reactive compensation electric capacity inductance tester
CN205067609U (en) * 2015-10-20 2016-03-02 谭瑾 Electric capacity detecting system based on singlechip
CN205080196U (en) * 2015-10-23 2016-03-09 广西电网有限责任公司崇左供电局 Light wireless reactive compensation capacitance measuring tester
CN205720452U (en) * 2016-06-18 2016-11-23 国网辽宁省电力有限公司抚顺供电公司 Reactive-load compensation equipment electric capacity measuring device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202002977U (en) * 2011-03-21 2011-10-05 江苏省电力公司无锡供电公司 Measuring device for measuring capacitance of shunt capacitor group
JP5578573B2 (en) * 2011-05-06 2014-08-27 中国電力株式会社 DC circuit insulation resistance measuring device, capacitance measuring device, insulation resistance measuring method and capacitance measuring method
CN203204051U (en) * 2013-04-25 2013-09-18 河北超联电子科技有限公司 Portable capacitance current tester
CN104569687A (en) * 2015-01-20 2015-04-29 国家电网公司 Capacitor bank fault detector
CN204925237U (en) * 2015-08-31 2015-12-30 广西科技大学鹿山学院 USB current -voltage power monitoring devices
CN204989317U (en) * 2015-09-08 2016-01-20 广西电网有限责任公司防城港供电局 Novel reactive compensation electric capacity inductance tester
CN205067609U (en) * 2015-10-20 2016-03-02 谭瑾 Electric capacity detecting system based on singlechip
CN205080196U (en) * 2015-10-23 2016-03-09 广西电网有限责任公司崇左供电局 Light wireless reactive compensation capacitance measuring tester
CN205720452U (en) * 2016-06-18 2016-11-23 国网辽宁省电力有限公司抚顺供电公司 Reactive-load compensation equipment electric capacity measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106405251A (en) * 2016-11-10 2017-02-15 中国南方电网有限责任公司超高压输电公司检修试验中心 Wireless distributed capacitor inductor test apparatus and application

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Application publication date: 20160907

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