CN105548765A - GIS zinc oxide lightning arrester live-line tester - Google Patents

GIS zinc oxide lightning arrester live-line tester Download PDF

Info

Publication number
CN105548765A
CN105548765A CN201511028008.XA CN201511028008A CN105548765A CN 105548765 A CN105548765 A CN 105548765A CN 201511028008 A CN201511028008 A CN 201511028008A CN 105548765 A CN105548765 A CN 105548765A
Authority
CN
China
Prior art keywords
voltage
gis
zinc oxide
phase
power supply
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
CN201511028008.XA
Other languages
Chinese (zh)
Inventor
王颖剑
楼钢
方旭光
盛骏
吴胥阳
王益旭
吴峰
郎城
占舒静
黄晓峰
楚文成
马骁
赵寿生
江应沪
吴杰清
金慧波
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
Jinhua Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Jinhua Power Supply Co of State Grid Zhejiang 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, Jinhua Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201511028008.XA priority Critical patent/CN105548765A/en
Publication of CN105548765A publication Critical patent/CN105548765A/en
Pending legal-status Critical Current

Links

Classifications

    • 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 provides a GIS zinc oxide lightning arrester live-line tester for the purposes of realizing a GIS lightning arrester live-line test by obtaining voltage signals through a maintenance power supply or a 220 power supply in a station and reducing errors in the test. In order to realize the purposes, the GIS zinc oxide lightning arrester live-line tester comprises a host, a voltage isolator and a data transmission system, wherein the host comprises a reference signal input end, a current input end, a wireless signal receiving end and a grounding end; the voltage isolator comprises a reference voltage input end and a voltage signal output end; and the host is also internally provided with a phase detector, the phase detector is connected with a phase calibrator, and the phase calibrator is connected with the maintenance power supply or the 220 power supply in the station for obtaining the voltage signals. Through such arrangement, the GIS zinc oxide lightning arrester live-line tester can simultaneously measure three phases of an MOA, can also perform single-phase measurement and can automatically compensate interphase interference.

Description

GIS electrified tester for zinc oxide arrester
Technical field
The present invention relates to a kind of power equipment, particularly relate to GIS electrified tester for zinc oxide arrester device.
Background technology
Electrified tester for zinc oxide arrester device is a kind of comparatively common equipment in electric operating.Also many correlation techniques are had in prior art, the such as patent No. is disclose a kind of electrified tester for zinc oxide arrester in the patent of invention " electrified tester for zinc oxide arrester " of 201010154699.9, relates to a kind of instrument detected alternating-current parameter in metal oxide arrester charging operation in electric system.This invention comprises main frame and from machine two parts, current sensor lead-in wire, current sensor unit, programming amplifying unit, current signal processing and control element (PCE), reception of wireless signals module are connected successively, be connected with host computer again, host computer is connected with current signal processing and control element (PCE), liquid crystal display, keyboard, mouse respectively, composition main frame; Voltage sensor lead wire, voltage sensor unit, voltage signal processing and control element (PCE) are connected successively with wireless signal transmitting module, form from machine; Main frame and from machine by wireless communication transmission control signal and data.This invention is suitable for the detection to total leakage current, resistive current first harmonics and the third harmonic that operating metal oxide arrester regularly carries out, and checks the runnability of metal oxide arrester.But such structure can only become terminal box acquisition reference signal by running pressure, and the voltage signal accessed is input to main frame through voltage isolator mode that is wireless or wire transmission.The electric current of main frame by obtaining from equipment under test, carries out comparing calculation with the reference signal of input, thus draws current in resistance property and the total current of Zinc-Oxide Arrester.The pressure change of GIS Zinc-Oxide Arrester is sealed in SF6 air chamber, cannot be measured by the method for the pressure change terminal box number of winning the confidence.Therefore prior art be not suitable for the live testing work of GIS Zinc-Oxide Arrester.
In addition, when lightning arrester equipment normally runs, current in resistance property account for circuital 10% ?20%.Send out sheet catabiosis for the lightning arrester occurred, under generally showing as working voltage, rising appreciably appears in current in resistance property higher harmonic components; If lightning arrester makes moist, then under showing as working voltage, rising appreciably appears in resistive current first harmonics component.But the impact being subject to the environmental factors such as such as working voltage size, air humidity due to lightning arrester live-line test result is comparatively large, so not by the I in simple comparison data over the years xPand I rPdraw the conclusion that lightning arrester makes moist.
Summary of the invention
The object of the present invention is to provide GIS electrified tester for zinc oxide arrester device, obtain voltage signal by 220 power supplys in maintenance power supply or station and realize GIS lightning arrester live-line test, and the error in test can be reduced.
In order to realize described object, GIS electrified tester for zinc oxide arrester of the present invention, comprises main frame, voltage isolator, data transmission system; Wherein main frame comprises reference signal input end, current input terminal, reception of wireless signals end, earth terminal; Voltage isolator comprises reference voltage input terminal, voltage signal output end; Also be provided with phase detectors in described main frame, described phase detectors connect phase calibrator, and described phase detectors connect 220 power supplys in maintenance power supply or station and obtain voltage signal.
Preferably, described voltage signal output end is provided with wireless transmitter.Wireless or wire transmission reference voltage, two kinds of mode compatibilities, increase the instrument scope of application.
Preferably, main frame is also connected with tablet.Tablet uses for coordinating tablet detection method.
Preferably, described tablet is the rectangular slab of 40cmX50cm.
Further using method of the present invention is following steps: step one, obtains reference voltage;
Step 2, fixes angular difference at 30 degree or 60 degree by between maintenance supply voltage and the voltage of PT bus terminal box;
Step 3, is set to B phase by maintenance power supply;
Step 4, obtains A phase voltage signal phase place by offset angle and calculates the voltage signal data obtaining correspondence.
When comparison current in resistance property value, usually can using phase angle difference Ф also as one of them reference quantity.This reference quantity is set in current in resistance property and is no more than circuital 25%, and phase angle difference is between 83 °-87.99 °.
The present invention accesses signal without the need to becoming terminal box from pressure, directly from maintenance power supply or any 220kV supply voltage amount of making reference, can effectively reduce the potential safety hazard of electrical network, equipment and the person.Often have necessarily delayed through its output voltage phase place of stage transformer, the transformer number of degrees of process is more, delayed larger.GIS electrified tester for zinc oxide arrester of the present invention, by such setting, can be measured three-phase MOA simultaneously, also can single-phasely measure, can auto-compensation interphase interference.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of GIS electrified tester for zinc oxide arrester device of the present invention.
Embodiment
The invention discloses .GIS electrified tester for zinc oxide arrester as shown in Figure 1, comprise main frame 1, data transmission system; Wherein main frame 1 comprises reference signal input end, current input terminal, reception of wireless signals end, earth terminal; It is characterized in that: also comprise voltage isolator 2, voltage isolator 2 comprises reference voltage input terminal, voltage signal output end; Also be provided with phase detectors 3 in described main frame 1, described phase detectors 3 connect phase calibrator 4, and described phase detectors 3 connect 220 power supplys in maintenance power supply or station and obtain voltage signal.
2. GIS electrified tester for zinc oxide arrester according to claim 1, is characterized in that, described voltage signal output end is provided with wireless transmitter.
3. GIS electrified tester for zinc oxide arrester according to claim 1, is characterized in that, main frame 1 is also connected with tablet 5.
4. GIS electrified tester for zinc oxide arrester according to claim 3, it is characterized in that, described tablet 5 is the rectangular slab of 40cmX50cm.
GIS transformer station all runs due to equipment in sealed gas chamber, cannot obtain working voltage signal, finally causes carrying out online Leakage Current sampling test.For addressing this problem, we attempt surveying 220V from low pressure and get voltage signal, and arrange compensating parameter and carry out auto-compensation to reach and to get the same effect of primary voltage signal to the phase differential once and between secondary, thus obtain online Leakage Current data.The focusing on of this technology is calculated once by fuzzy algorithm and phase differential carry out auto-compensation between secondary, finally obtains operating voltage signal.When use and maintenance power supply or 220V supply voltage make reference, angular difference is fixed at 30 degree or 60 degree between maintenance supply voltage and the voltage of PT bus terminal box, as long as this sampling instrument can this angular difference of automatic calibration, so get maintenance supply voltage and replace PT secondary voltage to make reference test arrester resistance current.(such as measure A phase lightning arrester total current and current in resistance property, voltage signal obtains from maintenance power supply, but the maintenance power supply in transformer station be by Bian Ya Qi ?change used be converted to, therefore the actual phase of overhauling power supply is not known in real work, suppose that maintenance power supply is B phase, so obtain the voltage signal phase place of A phase by compensating 120 degree and obtain corresponding voltage signal data by Fuzzy Calculation, the reference voltage signal data needed for the measurement of A phase lightning arrester can be obtained, by the present invention namely by obtaining voltage signal from maintenance power supply, realize the test of GIS lightning arrester live-line test).
Electrical test one class of technician carries GIS electrified tester for zinc oxide arrester targetedly and carries out rig-site utilization and detection to dissimilar transformer station.
Testing crew becomes the north suburb, Zinc oxide lightning arrester live-line test test is carried out in the change of Wu state, this test is measured identical lightning arrester with conventional electrified tester for zinc oxide arrester with GIS electrified tester for zinc oxide arrester, then contrast test data, whether all technical of specifying GIS electrified tester for zinc oxide arrester is up to standard.Each electric substation test data is as shown in the table:
Provide the test figure of wherein three substation field tests below:
Data from form above we can find, make reference Voltage Technique by the inner 220kV supply voltage arbitrarily of transformer station and realize lightning arrester live-line test, between reference voltage and busbar voltage, there is a fixing phase shift.This phenomenon is called as power supply phase shift, electric pressure this phase shift higher is larger, its reason is often have necessarily delayed through its output voltage phase place of stage transformer, the transformer number of degrees of process is more, delayed larger, general 110kV only has 1 ° of 220kV having about 2 °, but 500kV may up to more than 5 °.And can effectively correct this deviation by the phase detectors in the present invention and phase calibrator.

Claims (5)

1.GIS electrified tester for zinc oxide arrester, comprises main frame (1), data transmission system; Wherein main frame (1) comprises reference signal input end, current input terminal, reception of wireless signals end, earth terminal; It is characterized in that: also comprise voltage isolator (2), voltage isolator (2) comprises reference voltage input terminal, voltage signal output end; Phase detectors (3) are also installed in described main frame (1), described phase detectors (3) connect phase calibrator (4), and described phase detectors (3) connect 220 power supplys in maintenance power supply or station and obtain voltage signal.
2. GIS electrified tester for zinc oxide arrester according to claim 1, is characterized in that, described voltage signal output end is provided with wireless transmitter.
3. GIS electrified tester for zinc oxide arrester according to claim 1, is characterized in that, main frame (1) is also connected with tablet (5).
4. GIS electrified tester for zinc oxide arrester according to claim 3, is characterized in that, the rectangular slab that described tablet (5) is 40cmX50cm.
5. GIS electrified tester for zinc oxide arrester according to claim 1, it is characterized in that, its using method is following steps: step one, obtains reference voltage;
Step 2, fixes angular difference at 30 degree or 60 degree by between maintenance supply voltage and the voltage of PT bus terminal box;
Step 3, is set to B phase by maintenance power supply;
Step 4, obtains A phase voltage signal phase place by offset angle and calculates the voltage signal data obtaining correspondence.
CN201511028008.XA 2015-12-31 2015-12-31 GIS zinc oxide lightning arrester live-line tester Pending CN105548765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201511028008.XA CN105548765A (en) 2015-12-31 2015-12-31 GIS zinc oxide lightning arrester live-line tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201511028008.XA CN105548765A (en) 2015-12-31 2015-12-31 GIS zinc oxide lightning arrester live-line tester

Publications (1)

Publication Number Publication Date
CN105548765A true CN105548765A (en) 2016-05-04

Family

ID=55828086

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201511028008.XA Pending CN105548765A (en) 2015-12-31 2015-12-31 GIS zinc oxide lightning arrester live-line tester

Country Status (1)

Country Link
CN (1) CN105548765A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112578309A (en) * 2020-10-29 2021-03-30 深圳供电局有限公司 Method and device for acquiring voltage reference signal of lightning arrester live test

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101833051A (en) * 2010-04-20 2010-09-15 武汉新电电气技术有限责任公司 Electrified tester for zinc oxide arrester
CN202939235U (en) * 2012-10-30 2013-05-15 重庆市电力公司璧山供电局 XHDD406 zinc oxide lightning arrester live-line tester
CN204101663U (en) * 2014-10-14 2015-01-14 国家电网公司 Lightning arrester with electrical testing meter
CN205280851U (en) * 2015-12-31 2016-06-01 国网浙江省电力公司金华供电公司 GIS zinc oxide arrester live test appearance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101833051A (en) * 2010-04-20 2010-09-15 武汉新电电气技术有限责任公司 Electrified tester for zinc oxide arrester
CN202939235U (en) * 2012-10-30 2013-05-15 重庆市电力公司璧山供电局 XHDD406 zinc oxide lightning arrester live-line tester
CN204101663U (en) * 2014-10-14 2015-01-14 国家电网公司 Lightning arrester with electrical testing meter
CN205280851U (en) * 2015-12-31 2016-06-01 国网浙江省电力公司金华供电公司 GIS zinc oxide arrester live test appearance

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
吴思源 等: "避雷器带电测试方法实用性分析与选择", 《华北电力技术》 *
孙海龙: "氧化锌避雷器带电测试方法研究", 《电力学报》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112578309A (en) * 2020-10-29 2021-03-30 深圳供电局有限公司 Method and device for acquiring voltage reference signal of lightning arrester live test

Similar Documents

Publication Publication Date Title
WO2015117304A1 (en) System for online monitoring of zinc oxide arrester and method thereof
CN104730410A (en) Distribution line breakage monitoring method and device based on voltage and current vectors
US9685823B2 (en) Method for calibrating sensors in a power system
CN204462305U (en) A kind of distribution line disconnection monitor based on electric current and voltage vector
CN106771645B (en) Capacitance type potential transformer dielectric loss and capacitance on-line monitoring method and monitoring system
CN105137163A (en) Metal oxide varistor(MOV)-type arrester or surge protector resistive leakage current online monitoring method
CN110470936B (en) Method and device for testing resistive current of line arrester
CN103809010A (en) Device and method for determining voltage and power of each phase of medium-voltage network
CN104502762A (en) Data validity detection device for transformer bushing monitoring system
CN205280851U (en) GIS zinc oxide arrester live test appearance
Price Practical considerations for implementing wide area monitoring, protection and control
Patynowski et al. Fault Locator approach for high-impedance grounded or ungrounded distribution systems using synchrophasors
US11150290B2 (en) Accurate fault location method based on local and remote voltages and currents
Lin et al. A new fault location technique for three-terminal transmission grids using unsynchronized sampling
CN105548765A (en) GIS zinc oxide lightning arrester live-line tester
CN103913715B (en) High-voltage measuring box error testing system and error testing method
CN105403808B (en) A kind of localization method and device of DC line earth fault
CN104635088A (en) Intelligent sensing device of zinc oxide arrester tester
CN102004191A (en) Method for calculating line capacitance in arc suppression coil parallel running system
Zelingher et al. Harmonic monitoring system via GPS-synchronized measurements-update and new developments
CN104330650B (en) One kind is based on circuital Zinc-Oxide Arrester group charged test method
Volovich et al. Experimental operation of the adaptive electronic instrument transformer of current and voltage
CN105223422A (en) Digital dielectric loss measurement system device and method
CN109406877B (en) Method and device for measuring harmonic transmission coefficient of capacitor voltage transformer
CN108008335B (en) Method for identifying parameters of capacitor voltage transformer by least square method

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20160504

RJ01 Rejection of invention patent application after publication