CN107957569A - A kind of building block system experimental rig for field calibration GIS formula current transformers - Google Patents

A kind of building block system experimental rig for field calibration GIS formula current transformers Download PDF

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Publication number
CN107957569A
CN107957569A CN201711205483.9A CN201711205483A CN107957569A CN 107957569 A CN107957569 A CN 107957569A CN 201711205483 A CN201711205483 A CN 201711205483A CN 107957569 A CN107957569 A CN 107957569A
Authority
CN
China
Prior art keywords
current
current transformer
building block
lifting
gis
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
CN201711205483.9A
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Chinese (zh)
Inventor
郑州
王春光
张凯
吴志武
黄天富
周志森
伍翔
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
Fujian Electric Power Research Institute
State Grid Fujian Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Fujian Electric Power Research Institute
State Grid Fujian 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, Fujian Electric Power Research Institute, State Grid Fujian Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201711205483.9A priority Critical patent/CN107957569A/en
Publication of CN107957569A publication Critical patent/CN107957569A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00Testing or calibrating of apparatus covered by the preceding groups
    • G01R35/02Testing or calibrating of apparatus covered by the preceding groups of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating

Abstract

The present invention provides a kind of building block system experimental rig for field calibration GIS formula current transformers, it includes pressure regulator power supply, compensation capacitor group, current lifting device group, mutual-inductor tester, standard current transformer and current transformer to be measured;Pressure regulator power output end is connected with current lifting device group input terminal;Current lifting device group one exports the one end for being connected to tested current transformer, and carrying out once up-flow to tested current transformer operates;Another termination standard current transformer one end of current transformer;Another termination another output terminal of current lifting device group of standard current transformer;Mutual-inductor tester output terminal is connected with standard current transformer input terminal;The compensation capacitor group is connected with pressure regulator power output end.Versatility of the present invention is stronger, can adapt to plurality of devices with the current lifting device in adjustment equipment and capacitor group.

Description

A kind of building block system experimental rig for field calibration GIS formula current transformers
Technical field
The invention belongs to power domain, is tried more particularly to a kind of building block system for field calibration GIS formula current transformers Proved recipe method.
Background technology
It is electric to include subject for experiment primary current circuit when calibrating or carry out operating maintenance after the installation of GIS formulas current transformer Current transformer and GIS switches and generalized information system pipeline loop and ground primary current conductor.GIS formula current mutual inductor on site school Quasi- primary circuit impedance is much larger than calibration loop under conventional environment, and according to product type difference, GIS circuits apart from different changes It is larger.
The calibration primary circuit impedance of GIS formulas current mutual inductor on site is much larger than calibration loop under conventional environment, and according to production Product model is different, GIS circuits are changed greatly apart from difference.So the specific aim of existing equipment is stronger, substitutability and versatility It is weaker.
The content of the invention
The object of the present invention is to provide a kind of building block system test method for field calibration GIS formula current transformers.
The present invention is realized using following technical scheme:A kind of building block system for field calibration GIS formula current transformers tries Experiment device, it is characterised in that:Including pressure regulator power supply, compensation capacitor group, current lifting device group, mutual-inductor tester, normalized current Mutual inductor and current transformer to be measured;Pressure regulator power output end is connected with current lifting device group input terminal;One output terminal of current lifting device group One end of tested current transformer is connected to, carrying out once up-flow to tested current transformer operates;The other end of current transformer Connect standard current transformer one end;Another termination another output terminal of current lifting device group of standard current transformer;Mutual-inductor tester is defeated Outlet is connected with standard current transformer input terminal;The compensation capacitor group is connected with pressure regulator power output end.
In an embodiment of the present invention, the current lifting device group freely carries out building block system according to GIS loop lengths and builds;Up-flow Device group includes several current lifting devices;Current lifting device is a punching structure, and one time high current line extends there through, as change current lifting device Output terminal.
In an embodiment of the present invention, compensation capacitor group freely carries out building block system according to GIS loop lengths and builds, and compensates Capacitor group is connected on the output terminal of pressure regulator power supply, and the reactive loss for complementation test circuit is so as to reduce the appearance of experiment power supply Amount.
In an embodiment of the present invention, compensation capacitor group includes the capacitor of some groups of different capabilities;The mode of combination For multigroup mode in parallel;Parallel combination by the capacitor group for electrically switching different capabilities, to meet different reactive loss The adjustment of compensation capacity.
In an embodiment of the present invention, compensation capacitor group includes 4 group capacitors;4 group capacitor amount of capacity are 1:2: 4:8 proportionate relationship.
Compared with prior art, versatility of the present invention is stronger, can be fitted with the current lifting device in adjustment equipment and capacitor group Answer plurality of devices.
Brief description of the drawings
Fig. 1 is that GIS switchs preinstallation principle schematic in one embodiment of the invention.
Fig. 2 is the field test principle schematic after GIS switch installations.
Embodiment
Explanation is further explained to the present invention with specific embodiment below in conjunction with the accompanying drawings.
A kind of building block system experimental rig for field calibration GIS formula current transformers, it includes pressure regulator power supply, compensation Capacitor group, current lifting device group, mutual-inductor tester, standard current transformer and current transformer to be measured;Pressure regulator power supply exports End is connected with current lifting device group input terminal;Current lifting device group one exports the one end for being connected to tested current transformer, mutual to tested electric current Sensor carries out once up-flow operation;Another termination standard current transformer one end of current transformer;Standard current transformer is another One termination another output terminal of current lifting device group;Mutual-inductor tester output terminal is connected with standard current transformer input terminal;The benefit Capacitor group is repaid to be connected with pressure regulator power output end.
In an embodiment of the present invention, the current lifting device group freely carries out building block system according to GIS loop lengths and builds;Up-flow Device group includes several current lifting devices;Current lifting device is a punching structure, and one time high current line extends there through, as change current lifting device Output terminal.
In an embodiment of the present invention, compensation capacitor group freely carries out building block system according to GIS loop lengths and builds, and compensates Capacitor group is connected on the output terminal of pressure regulator power supply, and the reactive loss for complementation test circuit is so as to reduce the appearance of experiment power supply Amount.
In an embodiment of the present invention, compensation capacitor group includes the capacitor of some groups of different capabilities;The mode of combination For multigroup mode in parallel;Parallel combination by the capacitor group for electrically switching different capabilities, to meet different reactive loss The adjustment of compensation capacity.
In an embodiment of the present invention, compensation capacitor group includes 4 group capacitors;4 group capacitor amount of capacity are 1:2: 4:8 proportionate relationship.
The calibration of extra-high voltage current mutual inductor on site has two kinds of test methods, can carry out or install before GIS switchs installation Carried out into later.
Preinstallation primary circuit is shorter and contact resistance is smaller, and required capacity of experiment is smaller.It is once tested back Road is mainly as conducting wire of high current needed for experiment connects subject mutual inductor both sides terminal, the impedance of current lifting device primary circuit(Wear Core type), the impedance of standard current transformer primary circuit(Punching), subject current transformer primary circuit impedance and above-mentioned component Between connect contact impedance composition.Current mutual inductor on site calibrates always hindering for primary circuit in extra-high voltage switch under normal circumstances Anti- about 2.5m Ω, experiment maximum current is 7200A, therefore an output voltage of current lifting device is 18V or so.Test principle shows It is intended to as shown in Figure 1.
After installation or testing primary circuit when transport inspection is flowed up from GIS switch ends.It is tested Current Mutual Inductance All installation is complete for device and breaker and generalized information system, but can be from the current transformer dedicated test end that the both ends that GIS is switched are reserved Son carries out up-flow operation.Producer is needed to provide the tool part of subject Primary Conductor connection, a big current loop impedance during experiment Mainly by the high current conducting wire needed for testing, the primary circuit impedance of GIS switches, the impedance of current lifting device primary circuit(Punching), mark The impedance of quasi- current transformer primary circuit(Punching), subject current transformer primary circuit impedance and above-mentioned component between connect Contact impedance composition.The impedance of its primary circuit is much larger than the test loop impedance before not installing, its total impedance is about 9m Ω, Experiment maximum current is 7200A, therefore an output voltage of current lifting device is more than 50V.Test principle schematic diagram such as Fig. 2 institutes Show.
Above is presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, caused function are made During with scope without departing from technical solution of the present invention, protection scope of the present invention is belonged to.

Claims (5)

  1. A kind of 1. building block system experimental rig for field calibration GIS formula current transformers, it is characterised in that:Including pressure regulator electricity Source, compensation capacitor group, current lifting device group, mutual-inductor tester, standard current transformer and current transformer to be measured;Pressure regulator electricity Source output terminal is connected with current lifting device group input terminal;Current lifting device group one exports the one end for being connected to tested current transformer, to tested Current transformer carries out once up-flow operation;Another termination standard current transformer one end of current transformer;Normalized current is mutual Another termination another output terminal of current lifting device group of sensor;Mutual-inductor tester output terminal is connected with standard current transformer input terminal; The compensation capacitor group is connected with pressure regulator power output end.
  2. 2. the building block system experimental rig according to claim 1 for field calibration GIS formula current transformers, its feature exists In:The current lifting device group freely carries out building block system according to GIS loop lengths and builds;Current lifting device group includes several current lifting devices;Rise Stream device is a punching structure, and one time high current line extends there through, as the output terminal for changing current lifting device.
  3. 3. the building block system experimental rig according to claim 1 for field calibration GIS formula current transformers, its feature exists In:Compensation capacitor group freely carries out building block system according to GIS loop lengths and builds, and compensation capacitor group is connected on pressure regulator power supply Output terminal, the reactive loss for complementation test circuit is so as to reduce the capacity of pressure regulator power supply.
  4. 4. the building block system experimental rig according to claim 3 for field calibration GIS formula current transformers, its feature exists In:Compensation capacitor group includes the capacitor of some groups of different capabilities;The mode of combination is multigroup mode in parallel;By electric Switch the parallel combination of the capacitor group of different capabilities, to meet the adjustment of different reactive loss compensation capacities.
  5. 5. the building block system experimental rig according to claim 4 for field calibration GIS formula current transformers, its feature exists In:Compensation capacitor group includes 4 group capacitors;4 group capacitor amount of capacity are 1:2:4:8 proportionate relationship.
CN201711205483.9A 2017-11-27 2017-11-27 A kind of building block system experimental rig for field calibration GIS formula current transformers Pending CN107957569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711205483.9A CN107957569A (en) 2017-11-27 2017-11-27 A kind of building block system experimental rig for field calibration GIS formula current transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711205483.9A CN107957569A (en) 2017-11-27 2017-11-27 A kind of building block system experimental rig for field calibration GIS formula current transformers

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109324306A (en) * 2018-12-14 2019-02-12 国家电网有限公司 A kind of GIS device current transformer error test macro and its construction method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101424728A (en) * 2008-11-10 2009-05-06 西北电网有限公司 On site precision detecting test line for high-voltage current transformer
CN102043139A (en) * 2010-12-16 2011-05-04 中国人民解放军空军工程大学 Calibration device of current transformer and method for calibrating current transformer by using same
CN102375135A (en) * 2010-08-11 2012-03-14 苏州华电电气股份有限公司 Field calibration system of current transformer for metering
CN203310990U (en) * 2013-06-06 2013-11-27 陕西省电力公司规划评审中心 On-site accuracy verification device for 750 kV current transformer
WO2014008707A1 (en) * 2012-07-13 2014-01-16 天门市电工仪器仪表研究所 Ratio error self calibration system for miniature current transformer
CN105929354A (en) * 2016-06-29 2016-09-07 国家电网公司 Automatic calibrating device and method for large current transformer
CN205787084U (en) * 2016-06-29 2016-12-07 国家电网公司 Great current mutual inductor automatic calibrator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101424728A (en) * 2008-11-10 2009-05-06 西北电网有限公司 On site precision detecting test line for high-voltage current transformer
CN102375135A (en) * 2010-08-11 2012-03-14 苏州华电电气股份有限公司 Field calibration system of current transformer for metering
CN102043139A (en) * 2010-12-16 2011-05-04 中国人民解放军空军工程大学 Calibration device of current transformer and method for calibrating current transformer by using same
WO2014008707A1 (en) * 2012-07-13 2014-01-16 天门市电工仪器仪表研究所 Ratio error self calibration system for miniature current transformer
CN203310990U (en) * 2013-06-06 2013-11-27 陕西省电力公司规划评审中心 On-site accuracy verification device for 750 kV current transformer
CN105929354A (en) * 2016-06-29 2016-09-07 国家电网公司 Automatic calibrating device and method for large current transformer
CN205787084U (en) * 2016-06-29 2016-12-07 国家电网公司 Great current mutual inductor automatic calibrator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109324306A (en) * 2018-12-14 2019-02-12 国家电网有限公司 A kind of GIS device current transformer error test macro and its construction method

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Application publication date: 20180424

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