CN106774089A - The replacing options of feeder line microcomputer protecting controller - Google Patents
The replacing options of feeder line microcomputer protecting controller Download PDFInfo
- Publication number
- CN106774089A CN106774089A CN201710022430.7A CN201710022430A CN106774089A CN 106774089 A CN106774089 A CN 106774089A CN 201710022430 A CN201710022430 A CN 201710022430A CN 106774089 A CN106774089 A CN 106774089A
- Authority
- CN
- China
- Prior art keywords
- feeder line
- microcomputer protecting
- protecting controller
- line microcomputer
- protection
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of replacing options of feeder line microcomputer protecting controller, by checking whether new feeder line microcomputer protecting controller model and version are consistent with former line microcomputer protecting controller;Each feeder line microcomputer protecting controller protection seting parameter list that printing is set up in advance;Whether protection seting parameter is consistent with the former feeder line microcomputer protecting controller protection seting parameter list of printing in the former feeder line microcomputer protecting controller of verification;Input protection seting value and device inner parameter;Circuit-breaker switching on-off is tested and its position signalling monitoring;Breaker secondary current loop-around test and protective calibration;Background monitoring system and communication system are debugged, and this replacing options improves replacement operation efficiency, reduce the line outage time, while improve microcomputer protecting controller circuit reliability of operation after replacing.
Description
Technical field
The present invention relates to substation equipment renovation technique field, more particularly to a kind of feeder line microcomputer protecting controller is more
Change method.
Background technology
Micro-computer type protection measurement apparatus are with high precision, strong function, intellectuality, high reliability in transforming plant protecting system
System is widely used.Feeder line is a term in power distribution network, refers to the distribution line dispensed by power source bus.
, to after certain service life, component performance is gradually split for electronic product in feeder line microcomputer protecting controller
Change, protection system and TT&C system Frequent Troubles can be caused, it is necessary to change transformation in time.In transformation process, because work is not filled
Point, operation is lack of standardization, cause operating efficiency low, causes line user power off time to extend, or even leave safe mass after putting into operation
Hidden danger, jeopardizes the reliability service of device line.
Therefore, microcomputer protecting controller circuit reliability of operation after replacing how is improved, is those skilled in the art
Technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of replacing options of microcomputer protecting controller, with improve change after Microcomputer Protection
Measure and control device circuit reliability of operation.
To achieve the above object, the present invention provides a kind of replacing options of feeder line microcomputer protecting controller, including step:
S101:Check new feeder line microcomputer protecting controller model and version and former line microcomputer protecting controller whether one
Cause, if unanimously, into step S102;
S102:Each feeder line microcomputer protecting controller protection seting parameter list that printing is set up in advance;
S103:Feeder switch cabinet is gone into cold standby state by running status or hot standby state;
S104:Whether protection seting parameter protects with the former feeder line microcomputer of printing in the former feeder line microcomputer protecting controller of verification
Shield measure and control device protection seting parameter list is consistent, if unanimously, into step S105;If not, being protected with former feeder line microcomputer
Protection seting parameter is defined in shield measure and control device, improves the former feeder line microcomputer protecting controller protection seting parameter of modification printing
Table, afterwards, into step S105;
S105:Disconnect feeder line microcomputer protecting controller direct current operative power source switch and voltage transformer secondary voltage is opened
Close;
S106:Remove former feeder line microcomputer protecting controller;
S107:New feeder line microcomputer protecting controller is installed;
S108:The feeder line microcomputer protecting controller direct current operative power source that closes is switched and voltage transformer secondary voltage is opened
Close;
S109:Input protection seting value and device inner parameter;
S110:Circuit-breaker switching on-off is tested and its position signalling monitoring;
S111:Breaker secondary current loop-around test and protective calibration;
S112:Background monitoring system and communication system are debugged;
S113:Power transmission puts into operation.
Preferably, the feeder line microcomputer protecting controller protection seting parameter list of the step S102 is all including transformer station
The title of device line, numbering, protection throwing is fed out to move back, protect definite value, device address, voltage transformer no-load voltage ratio, electric current mutual
Sensor becomes when transformer capacity.
Preferably, the step S106 includes unloading each module fixed screw of Kaiyuan feeder line microcomputer protecting controller, respectively
Each module secondary connection connector terminals row is extracted, feeder line microcomputer protecting controller is removed.
Preferably, the step S109 includes the former feeder line microcomputer protecting controller protection seting parameter list according to printing
Input, if the former feeder line microcomputer protecting controller protection seting parameter list of printing has carried out perfect modification, is repaiied with improving
Protection seting parameter list after changing is defined and is input into, and protection seting parameter list includes protection seting value and device inner parameter,
Protection seting value includes that setting, protection definite value are moved back in protection throwing, and device inner parameter includes that device address, voltage transformer become
Than, current transformer ratio and transformer capacity.Core again after the completion of new feeder line microcomputer protecting controller relevant parameter input
To correct.
Preferably, the step S110 includes validating that both sides disconnecting switch at separate position, respectively by the spot and control
Room control carries out the breaking-closing operating of breaker, checks whether breaker is normal, Simultaneous Monitoring feeder line microcomputer protecting controller
Breaker closing position, the breaker on/off switch position display in the signal designation of open position and background monitoring machine whether
Normally.
Preferably, the step S112 includes validating that breaker at point position, closes respectively, separates the isolation of breaker both sides
Switch, into the status display page of feeder line microcomputer protecting controller, if intake respectively shows in disconnecting switch of closing
1 is shown as, in separate disconnecting switch, 0 is respectively shown as, is then showing the secondary connection of both sides disconnecting switch auxiliary switch just
Often, meanwhile, check background monitoring machine on disconnecting switch position signalling display whether correctly.
In the above-mentioned technical solutions, the replacing options of the feeder line microcomputer protecting controller that the present invention is provided, including step:
S101:Check whether new feeder line microcomputer protecting controller model and version are consistent with former line microcomputer protecting controller, if
Unanimously, then into step S102.S102:Each feeder line microcomputer protecting controller protection seting parameter list that printing is set up in advance.
S103:Feeder switch cabinet is gone into cold standby state by running status or hot standby state.S104:The former feeder line digital relay and monitoring of verification
Whether protection seting parameter is consistent with the former feeder line microcomputer protecting controller protection seting parameter list of printing in device, if
Unanimously, then into step S105, if inconsistent, protection seting parameter is defined in former feeder line microcomputer protecting controller, complete
The former feeder line microcomputer protecting controller protection seting parameter list of kind modification printing, afterwards, into step S105.S105:Disconnect
Feeder line microcomputer protecting controller direct current operative power source is switched and voltage transformer secondary voltage switch.S106:Remove former feeder line
Microcomputer protecting controller.S107:New feeder line microcomputer protecting controller is installed.S108:The feeder line digital relay and monitoring that closes is filled
Put direct current operative power source switch and voltage transformer secondary voltage switch.S109:Input protection seting value and device inner parameter.
S110:Circuit-breaker switching on-off is tested and its position signalling monitoring.S111:Breaker secondary current loop-around test and protective calibration.
S112:Background monitoring system and communication system are debugged.S113:Power transmission puts into operation.
By foregoing description, in the replacing options of the feeder line microcomputer protecting controller that the present invention is provided, in peace
Before filling new feeder line microcomputer protecting controller, check new feeder line microcomputer protecting controller model and version with former line Microcomputer Protection
Whether measure and control device is consistent, it is to avoid although model is the same during installation, because version is inconsistent, extends replacing construction, or even cannot
Smoothly implement to complete.Each feeder line microcomputer protecting controller set up in advance by printing protects related setting parameter table, is easy to
Staff checks, is input into parameters, improves and changes efficiency.Protect whole by checking in former feeder line microcomputer protecting controller
Whether consistent with the former feeder line microcomputer protecting controller protection seting parameter list of printing determine parameter, it is to avoid former feeder line microcomputer is protected
Relevant parameter is changed because of change later in shield measure and control device, and the non-real-time update of protection seting parameter list of printing, still according to beating
The protection seting parameter list of print is input into and causes input error, improves the reliability of microcomputer protecting controller circuit operation after changing
Property.
Brief description of the drawings
The flow chart of the replacing options of the feeder line microcomputer protecting controller that Fig. 1 is provided by the embodiment of the present invention.
Specific embodiment
Core of the invention is to provide a kind of replacing options of microcomputer protecting controller, with improve change after Microcomputer Protection
Measure and control device circuit reliability of operation.
In order that those skilled in the art more fully understands technical scheme, below in conjunction with the accompanying drawings and embodiment party
The present invention is described in further detail for formula.
Fig. 1 is refer to, in a kind of specific embodiment, the feeder line digital relay and monitoring that the specific embodiment of the invention is provided
The replacing options of device, including step:
S101:Check new feeder line microcomputer protecting controller model and version and former line microcomputer protecting controller whether one
Cause, if unanimously, into step S102.
S102:Each feeder line microcomputer protecting controller protection seting parameter list that printing is set up in advance.
Specifically, the related setting parameter table of feeder line microcomputer protecting controller protection includes that the transformer station is all and feeds out equipment
The title of circuit, numbering, protection throwing are moved back, protect definite value, device address, TV no-load voltage ratios, TA to become when transformer capacity.
The related setting parameter table of feeder line microcomputer protecting controller protection is established in advance by staff, replacement operation
When, operating efficiency can be greatly improved.
S103:Feeder switch cabinet is gone into cold standby state by running status or hot standby state.
S104:Whether protection seting parameter protects with the former feeder line microcomputer of printing in the former feeder line microcomputer protecting controller of verification
Shield measure and control device protection seting parameter list is consistent, if unanimously, into step S105.It is micro- with former feeder line if inconsistent
Protection seting parameter is defined in machine protection supervisory equipment, improves the former feeder line microcomputer protecting controller protection seting of modification printing
Parameter list, afterwards, into step S105.
S105:Disconnect feeder line microcomputer protecting controller direct current operative power source switch and voltage transformer secondary voltage is opened
Close.
S106:Remove former feeder line microcomputer protecting controller.
Specifically, unload each module fixed screw of Kaiyuan feeder line microcomputer protecting controller, extract that each module is secondary to be connect respectively
Line connector terminals are arranged, then remove feeder line microcomputer protecting controller.
S107:New feeder line microcomputer protecting controller is installed.
Specifically, each module of new feeder line microcomputer protecting controller is fixed, each module secondary connection connector terminals row
Insertion.Due to being the feeder line microcomputer protecting controller of same producer, same model, same version, generally, device is opened
Arrangement arrangement of hole size, protection philosophy, function, logic and binding post etc. is installed, debugs phase as former protection device
To convenient.This stylish each module of feeder line microcomputer protecting controller is fixed, and each module secondary wiring terminals row card insertion is
Can.If though two models of feeder line microcomputer protecting controller are the same, when version is different, the bore size of device may not
Together, because protection philosophy, function, logic may change, secondary circuit may need to relocate, message shows or Background communication stipulations become
It is dynamic, communication interface system and background program can be caused not to match, need producer technical staff to coordinate, transformation process is relatively cumbersome,
The replacement operation time greatly prolongs, and mistake easily occurs.It is advantageous to change same producer, same model, micro- with the feeder line of version
Machine protection supervisory equipment.
S108:The feeder line microcomputer protecting controller direct current operative power source that closes is switched and voltage transformer secondary voltage is opened
Close.
Whether the DC supply of specific monitoring feeder line microcomputer protecting controller is normal, and monitoring feeder line Microcomputer Protection is surveyed
Control device TV, secondary voltage indicate whether normally.
S109:Input protection seting value and device inner parameter.
Former feeder line microcomputer protecting controller protection seting parameter list according to printing is input into, if the former feeder line of printing is micro-
Machine protection supervisory equipment protection seting parameter list has carried out perfect modification, then be defined by improving amended protection seting parameter list
It is input into.
Wherein, it is preferable that protection seting parameter list includes protection seting value and device inner parameter, protection seting value includes protecting
Setting, protection definite value are moved back in shield throwing, and device inner parameter includes that device address, voltage transformer no-load voltage ratio, current transformer become
Than and transformer capacity.
Check correct again after the completion of new feeder line microcomputer protecting controller relevant parameter input.
S110:Circuit-breaker switching on-off is tested and its position signalling monitoring.
Specifically, including validating that both sides disconnecting switch at separate position, respectively by carrying out breaker with a distant place on the spot
Breaking-closing operating, checks whether breaker normal, the breaker closing position of Simultaneous Monitoring feeder line microcomputer protecting controller, point
Whether the breaker on/off switch position display on the signal designation and background monitoring machine of gate position is normal.
S111:Breaker secondary current loop-around test and protective calibration.
Specifically, additional secondary current, to breaker double measurement electric current, protective current loop energization current test, simulation
Breaker protection linkage verification.
S112:Background monitoring system and communication system are debugged.
Breaker is included validating that at point position, closed respectively, separated breaker both sides disconnecting switch, protected into feeder line microcomputer
Protect measure and control device the status display page, check switching value show situation, if intake when disconnecting switch is closed respectively
1 is shown as, in separate disconnecting switch, 0 is respectively shown as, is then showing the secondary connection of both sides disconnecting switch auxiliary switch just
Often.Meanwhile, check that disconnecting switch position signalling is displayed whether correctly in background monitoring machine.
S113:Power transmission puts into operation.
By foregoing description, the replacing of the feeder line microcomputer protecting controller provided in the specific embodiment of the invention
In method, before new feeder line microcomputer protecting controller is installed, check new feeder line microcomputer protecting controller model and version with
Whether former line microcomputer protecting controller is consistent, it is to avoid although model is the same during installation, because version is inconsistent, when extension is changed
Between, or even cannot smoothly implement to complete.Each feeder line microcomputer protecting controller protection seting parameter set up in advance by printing
Table, is easy to staff to check, is input into parameters, improves and changes efficiency, reduces the line outage time.By checking former feeder line
In microcomputer protecting controller protection seting parameter whether with printing former feeder line microcomputer protecting controller protection seting parameter
Table is consistent, it is to avoid relevant parameter changes because of change later, and the non-real-time update of Protection parameters account, still according to the protection of printing
Setting parameter table is input into and causes input error, improves microcomputer protecting controller circuit reliability of operation after changing.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (6)
1. a kind of replacing options of feeder line microcomputer protecting controller, it is characterised in that including step:
S101:Check whether new feeder line microcomputer protecting controller model and version are consistent with former line microcomputer protecting controller,
If consistent, into step S102;
S102:Each feeder line microcomputer protecting controller protection seting parameter list that printing is set up in advance;
S103:Feeder switch cabinet is gone into cold standby state by running status or hot standby state;
S104:Whether protection seting parameter is surveyed with the former feeder line Microcomputer Protection of printing in the former feeder line microcomputer protecting controller of verification
Control unit protection setting parameter table is consistent, if unanimously, into step S105;If not, being surveyed with former feeder line Microcomputer Protection
Protection seting parameter is defined in control device, improves the former feeder line microcomputer protecting controller protection seting parameter list of modification printing,
Afterwards, into step S105;
S105:Disconnect feeder line microcomputer protecting controller direct current operative power source switch and voltage transformer secondary voltage switch;
S106:Remove former feeder line microcomputer protecting controller;
S107:New feeder line microcomputer protecting controller is installed;
S108:The feeder line microcomputer protecting controller direct current operative power source that closes is switched and voltage transformer secondary voltage switch;
S109:Input protection seting value and device inner parameter;
S110:Circuit-breaker switching on-off is tested and its position signalling monitoring;
S111:Breaker secondary current loop-around test and protective calibration;
S112:Background monitoring system and communication system are debugged;
S113:Power transmission puts into operation.
2. replacing options of feeder line microcomputer protecting controller according to claim 1, it is characterised in that the step
The feeder line microcomputer protecting controller protection seting parameter list of S102 includes all titles for feeding out device line of transformer station, compiles
Number, protection throwing move back, protect definite value, device address, voltage transformer no-load voltage ratio, current transformer ratio and transformer capacity.
3. replacing options of feeder line microcomputer protecting controller according to claim 1, it is characterised in that the step
S106 includes unloading each module fixed screw of Kaiyuan feeder line microcomputer protecting controller, and each module secondary connection plug-in unit end is extracted respectively
Son row, removes feeder line microcomputer protecting controller.
4. replacing options of feeder line microcomputer protecting controller according to claim 1, it is characterised in that the step
S109 includes being input into according to the former feeder line microcomputer protecting controller protection seting parameter list of printing, if the former feeder line of printing is micro-
Machine protection supervisory equipment protection seting parameter list has carried out perfect modification, then be defined by improving amended protection seting parameter list
It is input into, protection seting parameter list includes protection seting value and device inner parameter, protection seting value includes that protection throwing is moved back and sets
Fixed, protection definite value, device inner parameter includes device address, voltage transformer no-load voltage ratio, current transformer ratio and transformation
Device capacity.Check correct again after the completion of new feeder line microcomputer protecting controller relevant parameter input.
5. replacing options of feeder line microcomputer protecting controller according to claim 1, it is characterised in that the step
S110 includes validating that both sides disconnecting switch at separate position, controls to carry out the divide-shut brake of breaker respectively with control room by the spot
Operation, checks whether breaker is normal, breaker closing position, the open position of Simultaneous Monitoring feeder line microcomputer protecting controller
Signal designation and background monitoring machine on breaker on/off switch position display it is whether normal.
6. replacing options of the feeder line microcomputer protecting controller according to any one of claim 1-5, it is characterised in that
The step S112 includes validating that breaker at point position, closes respectively, separates breaker both sides disconnecting switch, micro- into feeder line
The status display page of machine protection supervisory equipment, if intake is respectively shown as 1 in disconnecting switch of closing, in separate isolation
During switch, 0 is respectively shown as, then shows that the secondary connection of both sides disconnecting switch auxiliary switch is normal, meanwhile, check backstage prison
Disconnecting switch position signalling is displayed whether correctly on control machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710022430.7A CN106774089B (en) | 2017-01-12 | 2017-01-12 | The replacing options of feeder line microcomputer protecting controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710022430.7A CN106774089B (en) | 2017-01-12 | 2017-01-12 | The replacing options of feeder line microcomputer protecting controller |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106774089A true CN106774089A (en) | 2017-05-31 |
CN106774089B CN106774089B (en) | 2019-06-21 |
Family
ID=58947995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710022430.7A Active CN106774089B (en) | 2017-01-12 | 2017-01-12 | The replacing options of feeder line microcomputer protecting controller |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106774089B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107240885A (en) * | 2017-07-24 | 2017-10-10 | 山东钢铁股份有限公司 | Double-bus disconnecting switch backstage display location does not correspond to trouble shoot method |
CN111010301A (en) * | 2019-12-18 | 2020-04-14 | 国网山西省电力公司 | Auxiliary on-site module of third-generation intelligent substation and configuration-free method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201918707U (en) * | 2010-12-01 | 2011-08-03 | 南京因泰莱电器股份有限公司 | Protecting device for generator |
CN103050897A (en) * | 2012-12-07 | 2013-04-17 | 上海市电力公司 | Operation method for interruption-free exchange of fault recorder |
US20130231788A1 (en) * | 2012-03-05 | 2013-09-05 | Schneider Electric Industries Sas | Method and device for controlling selectivity of electric equipment |
CN204536824U (en) * | 2015-04-24 | 2015-08-05 | 翁文彬 | UHV (ultra-high voltage) microcomputer protecting controller |
CN105403789A (en) * | 2015-12-09 | 2016-03-16 | 天津二十冶建设有限公司 | Method for debugging microcomputer integrated relay protection device |
CN205827194U (en) * | 2016-03-15 | 2016-12-21 | 长沙明能环保科技有限公司 | The small hydropower station active and standby changeable control system reform case of integration |
-
2017
- 2017-01-12 CN CN201710022430.7A patent/CN106774089B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201918707U (en) * | 2010-12-01 | 2011-08-03 | 南京因泰莱电器股份有限公司 | Protecting device for generator |
US20130231788A1 (en) * | 2012-03-05 | 2013-09-05 | Schneider Electric Industries Sas | Method and device for controlling selectivity of electric equipment |
CN103050897A (en) * | 2012-12-07 | 2013-04-17 | 上海市电力公司 | Operation method for interruption-free exchange of fault recorder |
CN204536824U (en) * | 2015-04-24 | 2015-08-05 | 翁文彬 | UHV (ultra-high voltage) microcomputer protecting controller |
CN105403789A (en) * | 2015-12-09 | 2016-03-16 | 天津二十冶建设有限公司 | Method for debugging microcomputer integrated relay protection device |
CN205827194U (en) * | 2016-03-15 | 2016-12-21 | 长沙明能环保科技有限公司 | The small hydropower station active and standby changeable control system reform case of integration |
Non-Patent Citations (4)
Title |
---|
孙世忠: "馈线微机保护不停电改造模式", 《农林电气化》 * |
沙声强等: "变电站35kV及以下馈线微机保护改造模式的应用", 《电力安全技术》 * |
赵旭: "220kV电网有关设备更换微机保护的方式安排与分析", 《黑龙江电力》 * |
陈梦荣: "配电系统微机保护装置升级改造", 《柳钢科技》 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107240885A (en) * | 2017-07-24 | 2017-10-10 | 山东钢铁股份有限公司 | Double-bus disconnecting switch backstage display location does not correspond to trouble shoot method |
CN107240885B (en) * | 2017-07-24 | 2023-08-08 | 山东钢铁股份有限公司 | Method for searching fault with non-corresponding background display position of double-bus isolating switch |
CN111010301A (en) * | 2019-12-18 | 2020-04-14 | 国网山西省电力公司 | Auxiliary on-site module of third-generation intelligent substation and configuration-free method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN106774089B (en) | 2019-06-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100353642C (en) | Method and device of realizing hot plug for power distribution singleboard | |
CN106774089A (en) | The replacing options of feeder line microcomputer protecting controller | |
CN107147214A (en) | A kind of secondary peace suitable for intelligent substation arranges monitoring system | |
CN104810924A (en) | Intelligent substation line redundancy protection networking manner implementation method | |
CN105629030A (en) | Capture of power quality information at the time a device fails | |
CN103050897B (en) | Operation method for interruption-free exchange of fault recorder | |
CN106569108A (en) | Switch withstand voltage detection system and detection method | |
CN105403789A (en) | Method for debugging microcomputer integrated relay protection device | |
CN103825259B (en) | Relay protection system | |
JP2013172599A (en) | Leakage detection automatic restoration system | |
CN1744406B (en) | On-line integral pluggable signal circuit surge protector | |
JP2009141621A (en) | Tester for switch remote control apparatus | |
KR101371667B1 (en) | Method for checking and changing insulating gas of load break switch on live wire state | |
CN206742721U (en) | A kind of intelligent modularized change | |
CN113472072B (en) | Double-working-mode breaker operation box | |
CN107240885B (en) | Method for searching fault with non-corresponding background display position of double-bus isolating switch | |
CN114814534A (en) | Circuit board test structure and circuit board test fixture | |
US8849470B2 (en) | Method for performing service/maintenance on a switchgear panel, and related switchgear panel | |
CN106226687A (en) | A kind of method for the checking of voltage-type on-load switch automation function | |
CN106684821A (en) | Intelligent power distribution protection device with self-healing function and application thereof | |
CN209200309U (en) | 10kV protection device capable of being replaced quickly | |
CN103309252B (en) | Method and apparatus for the selectivity for controlling electrical equipment | |
CN102195239B (en) | Background-wall-technology-based smart incoming line module | |
CN112305288A (en) | Electric energy meter box | |
CN106786507B (en) | 110KV mobile bus PT merging unit of intelligent substation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20230531 Address after: 57 Qishan Street, Gangcheng District, Jinan City, Shandong Province, 250000 Patentee after: Laiwu Tianyuan Gas Co.,Ltd. Address before: 271104 No.99, Fuqian street, Gangcheng District, Laiwu City, Shandong Province Patentee before: SHANDONG IRON AND STEEL Co.,Ltd. |
|
TR01 | Transfer of patent right |