CN104502815A - Testing device for non-linear resistor type resonance eliminator - Google Patents

Testing device for non-linear resistor type resonance eliminator Download PDF

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Publication number
CN104502815A
CN104502815A CN201410704394.9A CN201410704394A CN104502815A CN 104502815 A CN104502815 A CN 104502815A CN 201410704394 A CN201410704394 A CN 201410704394A CN 104502815 A CN104502815 A CN 104502815A
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CN
China
Prior art keywords
resonance eliminator
voltage
transformer
signal collector
eliminator
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
CN201410704394.9A
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Chinese (zh)
Inventor
姚楠
尚光伟
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.)
Nanyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Original Assignee
Nanyang Power Supply Co of State Grid Henan 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 Nanyang Power Supply Co of State Grid Henan Electric Power Co Ltd filed Critical Nanyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority to CN201410704394.9A priority Critical patent/CN104502815A/en
Publication of CN104502815A publication Critical patent/CN104502815A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a testing device for a non-linear resistor type resonance eliminator, and the device comprises a resonance eliminator, a voltage regulator, and a transformer. The voltage regulator is sequentially connected with the transformer and the resonance eliminator. The device is also provided with a single-chip microcomputer, a controller, a voltage transformer, a detection signal collector, and a voltage signal collector, wherein the single-chip microcomputer is connected with the voltage regulator, the transformer, the controller, the detection signal collector, and the voltage signal collector. The voltage transformer is connected with the resonance eliminator and the voltage signal collector. The detection signal collector is connected with the resonance eliminator. The device provides the most direct and effective data, thereby improving the safe operation level of equipment. The device can be used for detecting whether the non-linear resistor type resonance eliminator is in normal operation or not, and can achieve the automatic detection of the volt-ampere characteristics of the non-linear resistor type resonance eliminator at all points.

Description

Test device for non-liner resistor type resonance eliminator
Technical field
The present invention relates to a kind of test device for non-liner resistor type resonance eliminator.
Background technology
In 6-35kV PT neutral point ungrounded electric network, the electromagnetic potential transformer (hereinafter referred to as PT) that primary connection is YO substation bus bar is equipped with, because the X of PT primary winding holds ground connection, and iron core is easily saturated, the power distribution network of this PT is housed, and can produce two kinds of rough sledding, one is under certain condition, can ferroresonance be produced, weak insulator arrangement can be made when resonance overvoltage is serious to damage and cause the accident; Two is low frequency free components that electrical network intermittence ground connection or ground connection produce when disappearing, and make the YO wiring PT degree of depth having passage over the ground saturated, primary winding is shoved by ampere level, makes PT fuse failure or PT is fried damages.Operating experience proves, PT neutral point be connected in series non-linear resistance type resonance eliminator between ground and can effectively prevent PT ferroresonance, it has eliminates the saturated resonance of PT and restriction and to shove two kinds of functions, do not affect again the normal operation of PT simultaneously, thus the normal work of non-linear resistance type resonance eliminator whether, most important to safe operation of electric network.Resonance eliminator essence is a kind of high power capacity non-linear resistance, plays damping and current limliting.If but in operation of power networks, have employed inferior or underproof resonance eliminator, can not be good when can cause ferroresonance play harmonic elimination effect, insure directly causing PT and to burn or PT winding punctures, great hidden danger is brought to power grid operation, secondly, resonance eliminator non-linear resistance is excessive, also there will be phase voltage and residual voltage and measures inaccurate situation and occur.So, be very necessary to the detection of electric network deharmonic device running status.The traditional way of power department relies on the quality of shaking the means measuring voltage mutual inductor neutral point non-linear resistance type resonance eliminators such as insulation or range estimation, the state of indirect understanding resonance eliminator, this method can not react the quality of resonance eliminator, and its quality only has and ensures by manufacturer's factory inspection.Secondly, non-linear resistance type resonance eliminator is meeting progressively burn-in effects regular event in During Process of Long-term Operation, therefore also need or irregular monitoring regular to it, and shake insulation or range estimation can not obtain the state of resonance eliminator in operational process accurately, definitely can not reflect the fault of resonance eliminator.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of test device for non-liner resistor type resonance eliminator, quickly and reliably can detect resonance eliminator, and testing process robotization.
For solving the problem, the technical solution used in the present invention is: a kind of test device for non-liner resistor type resonance eliminator, comprise resonance eliminator, pressure regulator and transformer, pressure regulator is connected successively with transformer and resonance eliminator, described proving installation is also provided with single-chip microcomputer and connects, controller, voltage transformer (VT), detection signal collector and voltage signal collector, wherein single-chip microcomputer respectively with described pressure regulator, transformer, controller and detection signal collector are connected with voltage signal collector, described voltage transformer (VT) is connected with resonance eliminator and voltage signal collector respectively, detection signal collector is connected with resonance eliminator.
Arrange earthing device between described transformer and resonance eliminator, this earthing device is connected with described single-chip microcomputer by relay switch.
Described earthing device is stake resistance.
Described controller is industrial computer.
The invention has the beneficial effects as follows: this test device for non-liner resistor type resonance eliminator provides the most effective data, thus improve the safety operation level of equipment, and by test step by step can each walk in test process determine as the case may be stop test reuse or continue test, avoid the resonance eliminator still having use value to waste.Whether this device can be used for detecting the normal work of non-linear resistance type resonance eliminator, can realize automatically detecting the volt-ampere characteristic of non-linear resistance type resonance eliminator when each point, this method can be predicted in advance to the carrying out of the potential event of operating non-linear resistance type resonance eliminator, also the unit check before can installing non-linear resistance type resonance eliminator, means and device are provided, overcome prior art Problems existing.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, test device for non-liner resistor type resonance eliminator of the present invention, comprises resonance eliminator 4, pressure regulator 1, transformer 2, single-chip microcomputer 9, controller 10, voltage transformer (VT) 5, detection signal collector 7 and voltage signal collector 6.Wherein, pressure regulator 1 is for applying test voltage to resonance eliminator 4, and it is connected successively with transformer 2 and resonance eliminator 4.Voltage transformer (VT) 5 and detection signal collector 7 are connected with resonance eliminator 4 two ends respectively, voltage transformer (VT) 5 is for the collection of resonance eliminator 4 virtual voltage, and be connected with single-chip microcomputer 9 by voltage signal collector 6, single-chip microcomputer 9 is delivered to after the voltage signal conversion that voltage transformer (VT) 5 inputs by voltage signal collector 6, and give controller 10 by single-chip microcomputer 9, to control timely and accurately to apply test voltage.Single-chip microcomputer 9 is connected with described pressure regulator 1, transformer 2, controller 10 and detection signal collector 7 and voltage signal collector 6 respectively, described detection signal collector 7 is for the collection of test signal and conversion, and send to single-chip microcomputer 9, and be delivered to controller 10 through single-chip microcomputer 9 and carry out analyzing and processing.Between described transformer 2 and resonance eliminator 4, earthing device 3 is set, this earthing device 3 can adopt stake resistance, for testing the release of rear resonance eliminator 4 voltage at every turn, when again testing by non-electriferous state, to improve the accuracy of test parameter, this earthing device is connected with described single-chip microcomputer 9 by relay switch 8.Described controller 10 can industrial computer, also can connect display, export printing equipment.Certainly, this test device for non-liner resistor type resonance eliminator also arranges the power frequency supply and direct supply that are controlled by controller 10.
This device can be tested resonance eliminator in use by the following method:
1) after the transformer output terminal in proving installation, monitor signal collector and voltage transformer (VT) being connected with resonance eliminator two ends to be measured respectively, switched on power by control system, by voltage transformer (VT), the virtual voltage at resonance eliminator two ends is flowed to single-chip microcomputer and controller by voltage signal collector, apply magnitude of voltage by controller and target to compare, and carry out adjustment control by single-chip microcomputer;
2) under control of the control system, voltage is applied by its rated voltage to resonance eliminator, control by setting pressure-resistant time, if the insulating medium of resonance eliminator is breakdown, then judge that this resonance eliminator is as waste product or damaged, if each performance parameter of resonance eliminator is normal, then compression system ground connection is released into zero potential, is undertaken by step 3) after waiting for 5 ~ 20min;
3) under control of the control system, add that 50% of the withstand voltage difference with rated voltage of setting applies voltage to resonance eliminator by its rated voltage, control by setting pressure-resistant time, if the insulating medium of resonance eliminator is breakdown, then judge that this resonance eliminator is as substandard products or existing damage, if each performance parameter of resonance eliminator is normal, then compression system ground connection is released into zero potential, is undertaken by step 4) after waiting for 5 ~ 20min; Certainly, also can stop pressurization before it occurs puncturing sign, in advance release of pressure, determine it and continue in spite of illness with or continue test;
4) under control of the control system, apply voltage to resonance eliminator by step 3) and add that 30% of the withstand voltage difference with rated voltage of setting applies voltage, control by setting pressure-resistant time, if the insulating medium of resonance eliminator is breakdown, then judge that this resonance eliminator is as substandard products or existing damage, if each performance parameter of resonance eliminator is normal, then compression system ground connection is released into zero potential, is undertaken by step 5) after waiting for 5 ~ 20min; Also can stop pressurization before it occurs puncturing sign, in advance release of pressure, determine it and continue with or continue test;
5) under control of the control system, voltage is applied by setting withstand voltage to resonance eliminator, control by setting pressure-resistant time, if the insulating medium of resonance eliminator is breakdown, then judge that this resonance eliminator is as substandard products or existing damage, if each performance parameter of resonance eliminator is normal, is then released into zero potential by compression system ground connection, and preserve or/and export each test parameter of printing, be completed.

Claims (4)

1. a test device for non-liner resistor type resonance eliminator, it is characterized in that: it comprises resonance eliminator, pressure regulator and transformer, pressure regulator is connected successively with transformer and resonance eliminator, described proving installation is also provided with single-chip microcomputer company, controller, voltage transformer (VT), detection signal collector and voltage signal collector, wherein single-chip microcomputer is connected with described pressure regulator, transformer, controller and detection signal collector and voltage signal collector respectively, described voltage transformer (VT) is connected with resonance eliminator and voltage signal collector respectively, and detection signal collector is connected with resonance eliminator.
2. test device for non-liner resistor type resonance eliminator as claimed in claim 1, it is characterized in that: arrange earthing device between described transformer and resonance eliminator, this earthing device is connected with described single-chip microcomputer by relay switch.
3. test device for non-liner resistor type resonance eliminator as claimed in claim 2, is characterized in that: described earthing device is stake resistance.
4. test device for non-liner resistor type resonance eliminator as claimed in claim 1, is characterized in that: described controller is industrial computer.
CN201410704394.9A 2014-11-29 2014-11-29 Testing device for non-linear resistor type resonance eliminator Pending CN104502815A (en)

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CN201410704394.9A CN104502815A (en) 2014-11-29 2014-11-29 Testing device for non-linear resistor type resonance eliminator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410704394.9A CN104502815A (en) 2014-11-29 2014-11-29 Testing device for non-linear resistor type resonance eliminator

Publications (1)

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CN104502815A true CN104502815A (en) 2015-04-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106405252A (en) * 2016-11-18 2017-02-15 国网江苏省电力公司宿迁供电公司 PT cabinet harmonic wave eliminator data measuring method and PT cabinet harmonic wave eliminator data measuring device
CN107196281A (en) * 2017-07-01 2017-09-22 合肥东玖电气有限公司 A kind of microcomputer harmonic elimination system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0254185A (en) * 1988-08-18 1990-02-23 Furukawa Electric Co Ltd:The Interrupting device of power supply
CN201181428Y (en) * 2008-03-05 2009-01-14 苏州市华电电气技术有限公司 High voltage output control device used for series resonance pressure test
CN102721891A (en) * 2012-07-04 2012-10-10 宁夏电力公司电力科学研究院 Test device for non-liner resistor type resonance eliminator
CN203337754U (en) * 2013-06-28 2013-12-11 国家电网公司 Resonance eliminator detection apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0254185A (en) * 1988-08-18 1990-02-23 Furukawa Electric Co Ltd:The Interrupting device of power supply
CN201181428Y (en) * 2008-03-05 2009-01-14 苏州市华电电气技术有限公司 High voltage output control device used for series resonance pressure test
CN102721891A (en) * 2012-07-04 2012-10-10 宁夏电力公司电力科学研究院 Test device for non-liner resistor type resonance eliminator
CN203337754U (en) * 2013-06-28 2013-12-11 国家电网公司 Resonance eliminator detection apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106405252A (en) * 2016-11-18 2017-02-15 国网江苏省电力公司宿迁供电公司 PT cabinet harmonic wave eliminator data measuring method and PT cabinet harmonic wave eliminator data measuring device
CN107196281A (en) * 2017-07-01 2017-09-22 合肥东玖电气有限公司 A kind of microcomputer harmonic elimination system

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