CN202748419U - Power distribution equipment electrified-check field - Google Patents

Power distribution equipment electrified-check field Download PDF

Info

Publication number
CN202748419U
CN202748419U CN 201220354775 CN201220354775U CN202748419U CN 202748419 U CN202748419 U CN 202748419U CN 201220354775 CN201220354775 CN 201220354775 CN 201220354775 U CN201220354775 U CN 201220354775U CN 202748419 U CN202748419 U CN 202748419U
Authority
CN
China
Prior art keywords
charged
examination
flow
jointing
switch
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.)
Expired - Lifetime
Application number
CN 201220354775
Other languages
Chinese (zh)
Inventor
王科
赵现平
谭向宇
彭晶
侯亚非
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.)
Yunnan Power Grid Corp Technology Branch
Yunnan Electric Power Experimental Research Institute Group Co Ltd of Electric Power Research Institute
Original Assignee
Yunnan Power Grid Corp Technology Branch
Yunnan Electric Power Experimental Research Institute Group Co Ltd of Electric Power Research Institute
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 Yunnan Power Grid Corp Technology Branch, Yunnan Electric Power Experimental Research Institute Group Co Ltd of Electric Power Research Institute filed Critical Yunnan Power Grid Corp Technology Branch
Priority to CN 201220354775 priority Critical patent/CN202748419U/en
Application granted granted Critical
Publication of CN202748419U publication Critical patent/CN202748419U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The utility model relates to a power distribution equipment electrified-check field which comprises a check field (1) and a nearby information monitoring terminal (2). The power distribution equipment electrified-check field is characterized by being provided with a constant-voltage boosting power supply, i.e., a 0.4kV/10kV power distribution transformer (5), and a replaceable 0-35kV adjustable boosting power supply, wherein the constant-voltage boosting power supply can be directly boosted to 10kV; and the replaceable 0-35kV adjustable boosting power supply comprises a 0.4kV/0-0.45kV three-phase voltage adjuster (6) and a0-0.45kV/0-35kV three-phase testing transformer (7). The power distribution equipment electrified-check field disclosed by the utility model can more meet the requirement for omnibearing testing of an on-line and electrified detection device or system by being provided with a high-low impedance loading device aiming at electric parameters or derivatived relative parameters and lay a foundation for the research and analysis of power distribution equipment and the testing and analysis of the on-line and electrified detection means of electrical equipment.

Description

The charged examination of a kind of controller switching equipment field
Technical field
The utility model belongs to the electrical equipment examination and detects research field, is particularly useful for detecting for electricity and heat insulation examination, the electric property of controller switching equipment, for the electric parameter monitoring system test and appraisal research of electrical equipment.
Background technology
Operating controller switching equipment directly has influence on user's power supply quality.Current complicacy owing to distribution network, the otherness of controller switching equipment quality, the diversity of controller switching equipment kind, in the time of more, the technical feature of controller switching equipment self is not well found out, and relevant detection technique is used especially and is seldom adopted.
As the switch cubicle of distribution network core, cable, distribution transforming, on-pole switch, outdoor switching station etc., its version is various, detection means is abundant, independent research is often at aspects such as time, voltage, electric currents, can't accomplish effectively to take into account, the more analysis take network as point of penetration, research of controller switching equipment just can't be implemented simultaneously.One-piece construction based on distribution network, take into full account the Research Requirements of all kinds of exemplary apparatus, relevant switch cubicle, cable, distribution transforming, on-pole switch, outdoor switching station etc. are built with the form of network, angle from long-term charging operation examination, in addition again for detection, analysis and the research purpose of one piece apparatus, go to make up the controller switching equipment research object of one group of diverse in function, relative closure, can be more comprehensively and the work that effectively conducts a research.
Current online and charged detection means kind based on electrical equipment is a lot, puts Detection of content, the gas composition (in the oil, in the SF6 gas) of the Detection of content, electric current of relevant Detection of content, temperature correlation relevant (comprising the dielectric loss that leakage current, ground current, voltage and current cooperate) such as office relevant etc.The application validity check of this type means, i.e. inclusion test accuracy more also relates to reliability, communication, multi-layer system constructing etc. and is convenient to the functional verification that remote monitoring or data gather etc.Current network access testing detects, and often with function, the detection accuracy of device or system, attaches most importance to, and adopts isolated mode, finishes at short notice test, is not system very.In fact all kinds of tested objects online and measuring device with electricity or system are exactly some electric or amplify out associated arguments.Based on building of the above-mentioned distribution network of mentioning, by high impedance, low-impedance load device are set, add utilization and can carry out the through-flow device of voltage isolation, in whole system of building, just realized time, voltage, electric current, the fault study condition that can take into account such as default.
Based on above-mentioned actual state, and the imagination of research, the charged examination of an a kind of controller switching equipment thinking has been proposed, take network as point of penetration, focus on electrical equipment, from the angle of long-term charged examination, after solving voltage, the problem of time, by utilizing the through-flow device that can carry out the voltage isolation, realize the long-term through-flow problem of whole examination most of low impedance device, namely solve current problems.For associated arguments electric or that amplify out, be provided with high low-impedance load device, the more comprehensive test of satisfying online and measuring device with electricity or system.Can be research, the analysis of controller switching equipment, test, the analysis of the online and charged detection means of electrical equipment lay the foundation.
Summary of the invention
The actual operating state of controller switching equipment, and for the test present situation of online and measuring device with electricity or the system of electrical equipment, impel the proposition of in the relative closure space, setting up examination field thinking of the study conditions such as the time of taking into account, voltage, electric current, fault is default.The utility model is from research contents, take network as point of penetration, focus on electrical equipment, angle from long-term charged examination, after solving voltage, the problem of time, by utilizing the through-flow device that can carry out the voltage isolation, realize the long-term through-flow problem of whole examination most of low impedance device, namely solve current problems.For associated arguments electric or that amplify out, be provided with high low-impedance load device, the more comprehensive test of satisfying online and measuring device with electricity or system.
The utility model is realized by following technical proposal.
The charged examination of a kind of controller switching equipment field, comprise examination, information monitoring terminal nearby, the utility model feature is: the constant voltage booster power that directly boosts to 10kV-0.4kV/10kV substation transformer is set, and the adjustable booster power of removable 0~35kV-consisted of by 0.4kV/0 ~ 0.45kV three-phase regulator and 0 ~ 0.45kV/0 ~ 35kV three-phase test transformer; Through the power supply of 0.4kV feed cable, three Monophase electric power cables sequentially connecting switch cabinet, on-pole switch, gas-filled switching tube station are passed through in the high-pressure side to an examination booster power low-pressure side by the 0.4kV power cabinet; The gas-filled switching tube station is connected with the Low ESR single-phase load by a Monophase electric power cable; Switch cubicle-No. 1 outgoing line cabinet is connected with the three-phase high impedance load by three Monophase electric power cables; At booster power high-pressure side connection terminal, and the line connection terminal at switch cubicle, on-pole switch, gas-filled switching tube station, be provided with charged through-flow jointing; Cable or optical fiber connect the operation parameters monitoring sensor of the electrical equipments such as power supply, booster power, switch cubicle, on-pole switch, gas-filled switching tube station, Low ESR single-phase load and the load of high impedance Combined three phase and information monitoring terminal nearby, realize that monitoring information uploads.
The utility model high impedance load is made of with lightning arrester, the electric capacity variable all insulation TV primary winding parallel combination of series connection number of optional single standard capacitor and insulating support support between 100~1000pF the variable 10kV cubicle switch of series connection number, is three relatively loads; The Low ESR single-phase load is made of separately a few multitap stainless steels of k Ω level or nickel-cadmium material resistance, electric capacity many taps reactor of optional single power capacitor or 60kVA between 0.1~3 μ F, is single-phase over the ground load.
The utility model nearby information monitoring terminal is connected with the operation parameters monitoring sensor of electrical equipment by short-range cable or optical fiber, and the realization monitoring information is uploaded; The information monitoring terminal is connected through LAN (Local Area Network) to public Internet net physical form by netting twine separately with distant place information monitoring terminal nearby, realizes the teletransmission of monitoring information.
The utility model adopts respectively the bonding conductor of insulating to be connected the current-source arrangement of voltage isolation at the charged through-flow jointing of the inlet wire side that is positioned at switch cubicle-incoming line cabinet and the charged through-flow jointing of the outgoing line side two ends that are positioned at switch cubicle-No. 2 outgoing line cabinet.
The utility model adopts respectively the bonding conductor of insulating to be connected the current-source arrangement of voltage isolation at the charged through-flow jointing of the outgoing line side that is positioned at switch cubicle-No. 2 outgoing line cabinet and the charged through-flow jointing of the inlet wire side two ends of on-pole switch.
The utility model adopts respectively the bonding conductor of insulating to be connected the current-source arrangement of voltage isolation at the charged through-flow jointing of the inlet wire side of on-pole switch and the charged through-flow jointing of the outgoing line side at gas-filled switching tube station two ends.
The utility model adopts respectively the bonding conductor of insulating to connect the current-source arrangement of voltage isolation the gas-filled switching tube station into and out of the through-flow jointing of tape electricity two ends.
The beneficial effects of the utility model are for associated arguments electric or that amplify out, to be provided with high low-impedance load device, the more comprehensive test of satisfying online and measuring device with electricity or system.Can be research, the analysis of controller switching equipment, test, the analysis of the online and charged detection means of electrical equipment lay the foundation.
Further set forth the utility model content below in conjunction with accompanying drawing and example.
Description of drawings
Fig. 1 is the utility model structural arrangement schematic diagram;
Fig. 2 is mixing resistance, appearance, the variable threephase load structural representation of sense of high impedance;
Fig. 3 is low-impedance single resistance, appearance, the variable single-phase load structural representation of sense;
Fig. 4 is double-deck information monitoring structural representation of the present utility model;
Fig. 5 is the specified through-flow examination wiring schematic diagram of low-impedance controller switching equipment under charged for through-flow loop once.
Among the figure: 1, examination field; 2, charged controller switching equipment information monitoring terminal nearby; 3, stube cable or optical fiber; 4,0.4kV power cabinet; 5,10kV distribution transforming; 6, three-phase regulator; 7, the 35kV three-phase test becomes; 8, power cable; 9-1, switch cubicle-incoming line cabinet; 9-2, switch cubicle-TV cabinet; 9-3, switch cubicle-No. 1 outgoing line cabinet; 9-4, switch cubicle-No. 2 outgoing line cabinet; 10, on-pole switch; 11, gas-filled switching tube station; 12, Low ESR single-phase load; 13, high impedance Combined three phase load; 14, charged through-flow jointing; 15, the variable 10kV cubicle switch lightning arrester of series connection number; 16, the variable all insulation TV of series connection number; 17, insulating support; 18, the standard capacitor of electric capacity between 100~1000pF; 19, load cabinet outlet casing tube; 20, stainless steel or the nickel-cadmium material resistance of the many wiring taps of a few k Ω levels; 21, many taps of 60kVA reactor; 22, the power capacitor of electric capacity between 0.1~3 μ F; 23, distant place information sense terminals; 24, can realize the current-source arrangement of voltage isolation; 25, the bonding conductor of insulating.
Embodiment
The charged examination of a kind of controller switching equipment field, comprise examination 1, information monitoring terminal 2 nearby, the utility model feature is: the constant voltage booster power that directly boosts to 10kV-0.4kV/10kV substation transformer 5 is set, and the adjustable booster power of removable 0~35kV-consisted of by 0.4kV/0 ~ 0.45kV three-phase regulator 6 and 0 ~ 0.45kV/0 ~ 35kV three-phase test transformer 7; Through the power supply of 0.4kV feed cable, three Monophase electric power cables 8 sequentially connecting switch cabinet 9, on-pole switch 10, gas-filled switching tube station 11 are passed through in the high-pressure side to an examination booster power low-pressure side by 0.4kV power cabinet 4; Gas-filled switching tube station 11 is connected with Low ESR single-phase load 12 by a Monophase electric power cable 8; Switch cubicle-No. 1 outgoing line cabinet 9-3 is connected with high impedance Combined three phase load 13 by three Monophase electric power cables 8; At booster power high-pressure side connection terminal, and the line connection terminal at switch cubicle 9, on-pole switch 10, gas-filled switching tube station 11, be provided with charged through-flow jointing 14; Cable or optical fiber 3 connects the operation parameters monitoring sensor of the electrical equipments such as power supplies 4, booster power, switch cubicle 9, on-pole switch 10, gas-filled switching tube station 11, Low ESR single-phase load 12 and high impedance Combined three phase load 13 and information monitoring terminal 2 nearby, realizes that monitoring information uploads.
The utility model high impedance Combined three phase load 13 is made of with lightning arrester 15, electric capacity variable all insulation TV primary winding 17 parallel combinations of series connection number of optional single standard capacitor 18 and insulating support 16 supports between 100~1000pF the variable 10kV cubicle switch of series connection number, is three relatively loads; Low ESR single-phase load 12 is made of separately a few multitap stainless steels of k Ω level or nickel-cadmium material resistance 20, electric capacity many taps reactor 21 of optional single power capacitor 22 or 60kVA between 0.1~3 μ F, is single-phase over the ground load.
The utility model nearby information monitoring terminal 2 is connected with the operation parameters monitoring sensor of electrical equipment by short-range cable or optical fiber 3, and the realization monitoring information is uploaded; Information monitoring terminal 2 is connected through LAN (Local Area Network) to public Internet net physical form by netting twine separately with distant place information monitoring terminal 23 nearby, realizes the teletransmission of monitoring information.
The utility model adopts respectively the bonding conductor 25 of insulating to be connected the current-source arrangement 24 of voltage isolation at the charged through-flow jointing 14 of the inlet wire side that is positioned at switch cubicle-incoming line cabinet 9-1 and the charged through-flow jointing of outgoing line side 14 two ends that are positioned at switch cubicle-No. 2 outgoing line cabinet 9-4.
The utility model adopts respectively the bonding conductor 25 of insulating to be connected the current-source arrangement 24 of voltage isolation at the charged through-flow jointing 14 of the outgoing line side that is positioned at switch cubicle-No. 2 outgoing line cabinet 9-4 and the charged through-flow jointing of the inlet wire side of on-pole switch 10 14 two ends.
The utility model adopts respectively the bonding conductor 25 of insulating to be connected the current-source arrangement 24 of voltage isolation at the charged through-flow jointing 14 of the inlet wire side of on-pole switch 10 and the charged through-flow jointing of the outgoing line side at gas-filled switching tube station 11 14 two ends.
The utility model adopts respectively the bonding conductor 25 of insulating to connect the current-source arrangement 24 of voltage isolation gas-filled switching tube station 11 into and out of the through-flow jointing of tape electricity 14 two ends.
See Fig. 1, the figure shows the utility model structural arrangement schematic diagram.Among the figure there being in the enclosure space of fence one examination 1, is provided with the gate.380V power cabinet 4 is supplied with the power supply of whole examination field.Booster power is 10kV distribution transforming 5, also can be replaced by as required by three-phase regulator 6 and 35kV three-phase test to become 7 regulated power supplies that consist of.Switch cubicle 9 is provided with the four sides, is respectively incoming line cabinet 9-1, TV cabinet 9-2, No. 1 outgoing line cabinet 9-3, No. 2 outgoing line cabinet 9-4.No. 1 outgoing line cabinet 9-3 connects mixing resistance, appearance, the variable high impedance Combined three phase of the sense load 13 of high impedance through power cable 8.No. 2 outgoing line cabinet 9-4 connects on-pole switch 10, connects gas-filled switching tube station 11, connects low-impedance single resistance, appearance, the variable Low ESR single-phase load 12 of sense through power cable 8.Transformer 5 or high-pressure side, each controller switching equipment splicing ear of 7 are reserved charged through-flow jointing 14, are used for the through-flow examination wiring under charged.The operation parameters of the electrical equipments such as power supply 4, booster power, switch cubicle 9, on-pole switch 10, gas-filled switching tube station 11, Low ESR single-phase load 12 and high impedance Combined three phase load 13 is uploaded to information monitoring terminal 2 nearby by monitoring sensor through short-range cable or optical fiber 3.
See Fig. 2, the figure shows mixing resistance, appearance, the variable threephase load structural representation of sense of high impedance.Among the figure high impedance mix resistance, hold, the variable high impedance Combined three phase of sense load 13 by the variable 10kV cubicle switch of series connection number with the variable all insulation TV primary winding 17 of the series connection number of lightning arrester 15, electric capacity optional single standard capacitor 18, insulating support 16 supports between 100~1000pF as required parallel combination consist of, be encapsulated in the metal cabinet of the earthing of casing, voltage lead is introduced via load cabinet outlet casing tube 19.
See Fig. 3, the figure shows low-impedance single resistance, appearance, the variable single-phase load structural representation of sense.The figure medium or low resistance resists single resistance, appearance, the variable Low ESR single-phase load 12 of sense to be made of separately as required many taps reactor 21 of a few multitap stainless steels of k Ω level or nickel-cadmium material resistance 20, electric capacity optional single power capacitor 22,60kVA between 0.1~3 μ F, be encapsulated in the metal cabinet of the earthing of casing, voltage lead is introduced via load cabinet outlet casing tube 19.
See Fig. 4, the figure shows double-deck information monitoring structural representation of the present utility model.The terminal of information monitoring nearby 2 of station end is connected with the operation parameters monitoring sensor of electrical equipment by short-range cable or optical fiber 3 among the figure, and the realization monitoring information is uploaded; Information monitoring terminal 2 is connected through LAN (Local Area Network) to public Internet net physical form by netting twine separately with distant place information monitoring terminal 23 nearby, realizes the teletransmission of monitoring information.
See Fig. 5, show respectively once through-flow loop among this figure and be the specified through-flow examination wiring schematic diagram of low-impedance controller switching equipment under charged.Figure 1.~4. middle utilization can realize the current-source arrangement 24 that voltage is isolated, based on the principle to short circuit metal closed-loop path induction up-flow, bonding conductor 25 by insulating, by at booster power high-pressure side connection terminal and switch cubicle 9, on-pole switch 10, the charged through-flow jointing 14 that arranges on the line connection terminal at gas-filled switching tube station 11, can realize comprising power cable 8, switch cubicle 9, on-pole switch 10, gas-filled switching tube station 11 grades once through-flow loop are low-impedance controller switching equipment in the situation that do not disconnect with charged examination loop, carry out the specified through-flow examination under charged.

Claims (7)

1. the charged examination of a controller switching equipment, comprise examination (1), information monitoring terminal (2) nearby, it is characterized in that: the constant voltage booster power that directly boosts to 10kV-0.4kV/10kV substation transformer (5) is set, and the adjustable booster power of removable 0~35kV-consisted of by 0.4kV/0 ~ 0.45kV three-phase regulator (6) and 0 ~ 0.45kV/0 ~ 35kV three-phase test transformer (7); Through the power supply of 0.4kV feed cable, three Monophase electric power cables (8) sequentially connecting switch cabinet (9), on-pole switch (10), gas-filled switching tube station (11) are passed through in the high-pressure side to an examination booster power low-pressure side by 0.4kV power cabinet (4); Gas-filled switching tube station (11) is connected with Low ESR single-phase load (12) by a Monophase electric power cable (8); Switch cubicle-No. 1 outgoing line cabinet (9-3) is connected with high impedance Combined three phase load (13) by three Monophase electric power cables (8); At booster power high-pressure side connection terminal, and the line connection terminal of switch cubicle (9), on-pole switch (10), gas-filled switching tube station (11), be provided with charged through-flow jointing (14); Cable or optical fiber (3) connect the operation parameters monitoring sensor of power supply (4), booster power, switch cubicle (9), on-pole switch (10), gas-filled switching tube station (11), Low ESR single-phase load (12) and high impedance Combined three phase load (13) electrical equipment and information monitoring terminal (2) nearby, and the realization monitoring information is uploaded.
2. the charged examination of a kind of controller switching equipment according to claim 1, it is characterized in that: high impedance Combined three phase load (13) is made of with variable all insulation TV primary winding (17) parallel combination of series connection number that lightning arrester (15), electric capacity optional single standard capacitor (18) and insulating support (16) between 100~1000pF support the variable 10kV cubicle switch of series connection number, is three relatively loads; Low ESR single-phase load (12) is made of separately a few multitap stainless steels of k Ω level or nickel-cadmium material resistance (20), electric capacity many taps reactor (21) of optional single power capacitor (22) or 60kVA between 0.1~3 μ F, is single-phase over the ground load.
3. the charged examination of a kind of controller switching equipment according to claim 1, it is characterized in that: information monitoring terminal (2) is connected with the operation parameters monitoring sensor of electrical equipment by short-range cable or optical fiber (3) nearby, and the realization monitoring information is uploaded; Information monitoring terminal (2) is connected through LAN (Local Area Network) to public Internet net physical form by netting twine separately with distant place information monitoring terminal (23) nearby, realizes the teletransmission of monitoring information.
4. the charged examination of a kind of controller switching equipment according to claim 1 field is characterized in that: adopt respectively the bonding conductor (25) of insulating to be connected the current-source arrangement (24) of voltage isolation at the charged through-flow jointing of the inlet wire side that is positioned at switch cubicle-incoming line cabinet (9-1) (14) and the charged through-flow jointing of the outgoing line side that is positioned at switch cubicle-No. 2 outgoing line cabinet (9-4) (14) two ends.
5. the charged examination of a kind of controller switching equipment according to claim 1 field is characterized in that: adopt respectively the bonding conductor (25) of insulating to be connected the current-source arrangement (24) of voltage isolation at the charged through-flow jointing of the outgoing line side that is positioned at switch cubicle-No. 2 outgoing line cabinet (9-4) (14) and the charged through-flow jointing of the inlet wire side of on-pole switch (10) (14) two ends.
6. the charged examination of a kind of controller switching equipment according to claim 1 field is characterized in that: adopt respectively the bonding conductor (25) of insulating to be connected the current-source arrangement (24) of voltage isolation at the charged through-flow jointing of the inlet wire side of on-pole switch (10) (14) and the charged through-flow jointing of the outgoing line side of gas-filled switching tube station (11) (14) two ends.
7. the charged examination of a kind of controller switching equipment according to claim 1 field is characterized in that: the current-source arrangement (24) that adopts respectively bonding conductor (25) the connection one voltage isolation of insulating into and out of tape electricity through-flow jointing (14) two ends in gas-filled switching tube station (11).
CN 201220354775 2012-07-20 2012-07-20 Power distribution equipment electrified-check field Expired - Lifetime CN202748419U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220354775 CN202748419U (en) 2012-07-20 2012-07-20 Power distribution equipment electrified-check field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220354775 CN202748419U (en) 2012-07-20 2012-07-20 Power distribution equipment electrified-check field

Publications (1)

Publication Number Publication Date
CN202748419U true CN202748419U (en) 2013-02-20

Family

ID=47707793

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220354775 Expired - Lifetime CN202748419U (en) 2012-07-20 2012-07-20 Power distribution equipment electrified-check field

Country Status (1)

Country Link
CN (1) CN202748419U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104267278A (en) * 2014-09-24 2015-01-07 国网河南省电力公司平顶山供电公司 Reactive power compensation device and live-part verification method of lightning arrester
CN107225330A (en) * 2017-07-19 2017-10-03 云南电网有限责任公司电力科学研究院 A kind of high voltage alive equipment laser rust-removing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104267278A (en) * 2014-09-24 2015-01-07 国网河南省电力公司平顶山供电公司 Reactive power compensation device and live-part verification method of lightning arrester
CN107225330A (en) * 2017-07-19 2017-10-03 云南电网有限责任公司电力科学研究院 A kind of high voltage alive equipment laser rust-removing device

Similar Documents

Publication Publication Date Title
Cerretti et al. Ground fault temporary overvoltages in MV networks: Evaluation and experimental tests
Balasubramaniam et al. Power quality issues, solutions and standards: A technology review
CN103308832A (en) Partial discharge test device for high-voltage cable insulation middle joint and use method
CN104808021B (en) A kind of test connection circuit measured for line parameter circuit value and measuring method thereof
CN109581168A (en) A kind of converter power transformer In situ DC partial discharge test system and method
CN109709425A (en) A kind of distribution transformer bears the pilot system and method for short-circuit capacity
CN105958354B (en) Two kinds of prepackage type integrated intelligent substations of 110kV/10kV and 110kV/35kV
CN202748419U (en) Power distribution equipment electrified-check field
CN108736360A (en) A kind of integration loaded capacity regulating voltage regulating power distribution station
CN207601164U (en) Electric safety system residual current monitoring module
CN108152779A (en) Electronic current mutual inductor check system and method
CN203178470U (en) Secondary circuit testing device for mutual inductor
CN106154123A (en) A kind of distance scene frequency-changing AC pressure test system
CN207896531U (en) A kind of extra-high-voltage alternating current substation
CN110441665A (en) In situ DC pressure resistance and local discharge test device for ± 500kV converter station
Conti et al. Innovative voltage regulation method for distribution networks with distributed generation
Santos et al. Electrical requirements for half-wavelength power transmission line design
CN101728777B (en) Installation method of distribution network automation device of 10kV power distribution station
Klaus et al. Superconducting fault current limiters-UK network trials live and limiting
CN104749453A (en) Method for reducing influences imposed on user voltage sag by external grid single-phase grounding fault
CN107579471A (en) A kind of handcart switch cabinet CT rising test short-circuit devices
CN105896542B (en) A kind of 35kV/10kV prepackage type integrated intelligent substation
Ramesh et al. Voltage profile improvement through high voltage distribution system
CN205509359U (en) Intelligent automatic supervision and control low pressure inlet wire switch board
Maulana et al. Analysis of technical loss calculation using load curve approach on 20 kV distribution network

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20130220