CN105548765A - GIS zinc oxide lightning arrester live-line tester - Google Patents
GIS zinc oxide lightning arrester live-line tester Download PDFInfo
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Thermistors And Varistors (AREA)
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
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.
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 |
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| 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 |
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| CN105548765A true CN105548765A (en) | 2016-05-04 |
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| CN201511028008.XA Pending CN105548765A (en) | 2015-12-31 | 2015-12-31 | GIS zinc oxide lightning arrester live-line tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908684A (en) * | 2017-01-20 | 2017-06-30 | 国网河南省电力公司电力科学研究院 | A kind of metal oxide arrester live detection Multi point measuring apparatus |
| 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 |
| CN114167169A (en) * | 2021-11-18 | 2022-03-11 | 广西电网有限责任公司南宁供电局 | Arrester live test signal acquisition device |
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| 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 |
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2015
- 2015-12-31 CN CN201511028008.XA patent/CN105548765A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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)
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| 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》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908684A (en) * | 2017-01-20 | 2017-06-30 | 国网河南省电力公司电力科学研究院 | A kind of metal oxide arrester live detection Multi point measuring apparatus |
| CN106908684B (en) * | 2017-01-20 | 2023-04-07 | 国网河南省电力公司电力科学研究院 | Multipoint measuring device for live-line detection of metal oxide arrester |
| 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 |
| CN114167169A (en) * | 2021-11-18 | 2022-03-11 | 广西电网有限责任公司南宁供电局 | Arrester live test signal acquisition device |
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