CN101854052B - Sampling data passageway switching method and device in main transformer protection of digitalized substation - Google Patents
Sampling data passageway switching method and device in main transformer protection of digitalized substation Download PDFInfo
- Publication number
- CN101854052B CN101854052B CN2010101120163A CN201010112016A CN101854052B CN 101854052 B CN101854052 B CN 101854052B CN 2010101120163 A CN2010101120163 A CN 2010101120163A CN 201010112016 A CN201010112016 A CN 201010112016A CN 101854052 B CN101854052 B CN 101854052B
- Authority
- CN
- China
- Prior art keywords
- branch
- main transformer
- bypass
- module
- optical fiber
- 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.)
- Active
Links
Images
Abstract
The invention provides a sampling data passageway switching method and a device in main transformer protection of a digitalized substation, comprising the following steps: receiving an operational command to set a primary side constant value of a current transformer in an accessory pathway branch to be zero and existing from accessory pathway branch optical fiber; when starting back accessory pathway operation, receiving the operation command to set the primary side constant value of the current transformer in the accessory pathway branch to be a preset value, and connecting with the accessory pathway optical fiber; when carrying out the back accessory pathway operation, receiving the operation command to close a accessory pathway branch switch and switch off a main transformer branch switch; and then setting the primary side constant value of the current transformer to be zero and existing from a main transformer branch optical fiber. Meanwhile, the invention also provides the sampling data passageway switching device, comprising a receiving module, an accessory pathway branch module, a main transformer branch module and a line switch module. In the invention, main transformer differential construction is changed by switching a plurality of constant value regions, and the main transformer differential construction is ensured to always reflect the operation condition of the single system, thereby ensuring safe operation of a transformer protection device during the process of bypass replace protection for main transformer.
Description
Technical field
The present invention relates to power transformation device resist technology field, be specifically related to the sampling data passageway switching method in a kind of main transformer protection of digitalized substation, and the sampling data passageway switching device shifter in the main transformer protection of digitalized substation.
Background technology
Digital transformer substation is to be the digitlization object with transformer station's first and second equipment; On IEC61850 communication specification basis; Digital information is carried out unified Modeling, physical equipment is virtual, adopt standardized network communication platform; Realize information sharing of intelligent electric equipment room and interactive operation in the transformer station, satisfy the modernized transformer station of safety, stable, reliable, economical operation requirement.
Along with key technology such as electronic mutual inductor and GOOSE in the digital transformer substation reaches its maturity; Digital transformer substation is constantly promoted; Face the new problem that some bring because of the protection digitlization on the protection philosophy, main transformer is other to be exactly one of them problem for the differential formation of tranformer protection in the process.
In the other process for main transformer, the transformer differential protection of use switch CT (Current Transformer, i.e. current transformer) will experience from single branch differential differential to two branches, and then switches to the differential process of single branch.When adopting traditional electromagnetic type CT, differential protection must provide two branch current input channels, and detailed process is following:
Step S1, transformer are in the operation of main transformer branch road, and this moment, main transformer branch normally moved, and the bypass branch current terminal internally breaks off in screen, externally short circuit.
Step S2 prepares to begin when falling the bypass, at first opens the bypass branch current terminal on the screen, makes it get into normal operating conditions, and by-pass current can not count this transformer differential protection when this operation can guarantee on the side for other intervals.
Step S3, the bypass operation of falling is also in the end broken off the main transformer branch switch, and need carry out the CT correlation test this moment, can main transformer branch current terminal internally be broken off on screen, externally short circuit.
Apply mechanically the transformer station that switching current, is applied mechanically casing current at main transformer protection one, can withdraw from a cover main transformer protection during for dataway operation earlier, and then accomplish remaining operation with switching current.The advantage of this protection configuration is to need not the operating system current circuit, and shortcoming is bypass when moving for main transformer, and main transformer protection has only single cover operation, and because the main transformer sleeve pipe to the lead-in wire of main transformer switch and by-pass switch not in protection range, make protection range dwindle.
Because digital transformer substation adopts after the electronic mutual inductor; Protective device all adopts switch CT to realize differential protection and backup protection; Analog quantity gets into protective device through optical fiber; Can not on screen, set the isolation that corresponding terminal is realized electric current, and electric current is to get into protective device through same optical fiber with voltage signal, realizes the switching of differential protection electric current relatively more difficult.
Summary of the invention
The objective of the invention is to; Sampling data passageway switching method in a kind of main transformer protection of digitalized substation is proposed; And the sampling data passageway switching device shifter in a kind of main transformer protection of digitalized substation, in digital transformer substation, realize switching to the differential protection electric current.
The present invention proposes the sampling data passageway switching method in the main transformer protection of digitalized substation, comprising:
Step S1 receives operational order the former limit of the current transformer of bypass branch definite value is set at zero, and withdraws from bypass branch optical fiber;
Step S2 begins when falling the bypass operation, receives operational order the former limit of the current transformer of bypass branch definite value is set at preset value, and connect bypass branch optical fiber;
Step S3 in when falling the bypass operation, receives the operational order bypass branch switch that closes and breaks off the main transformer branch switch again; According to the operational order that receives the former limit of the current transformer of main transformer branch definite value is set at zero then, and withdraws from the main transformer branch optical fiber.
The present invention also proposes the sampling data passageway switching device shifter in a kind of main transformer protection of digitalized substation simultaneously, comprising: be used to receive operational order receiver module, be used to set bypass branch module that bypass branch current transformer former limit definite value and control bypass branch optical fiber connects, be used to set main transformer branch module that main transformer branch current instrument transformer former limit definite value and control main transformer branch optical fiber connect and the line switching module that is used for the control circuit switch;
Said receiver module receives operational order; Send according to said operational order and to control signal to said bypass branch module; Said bypass branch module is set at zero according to said control signal with the former limit of the current transformer of bypass branch definite value, and withdraws from bypass branch optical fiber;
Begin when falling the bypass operation; Said receiver module receives operational order; Send according to said operational order and to control signal to said bypass branch module; Said bypass branch module is set at preset value according to said control signal with the former limit of the current transformer of bypass branch definite value, and connects bypass branch optical fiber;
When falling the bypass operation; Said receiver module receives operational order; Send according to said operational order and to control signal to said line switching module and said main transformer branch module, said line switching module is broken off the main transformer branch switch again according to the said control signal bypass branch switch that closes; Said then main transformer branch module is set at zero according to said control signal with the former limit of the current transformer of main transformer branch definite value, and withdraws from the main transformer branch optical fiber.
The present technique scheme changes the formation of main transformer differential through the switching of definite value several times; For example the starting stage transformer moves in main transformer branch; Just, make bypass branch withdraw from differential protection and backup protection through the former limit of the current transformer of bypass branch definite value being set at zero and withdrawing from bypass branch optical fiber.Beginning when falling the bypass operation, make the electric current in the bypass branch optical fiber begin to count differential protection and backup protection then through the former limit of the current transformer of bypass branch definite value is set at preset value and connects bypass branch optical fiber.In when falling the bypass operation, the bypass branch switch that closes earlier breaks off the main transformer branch switch again; Then through the former limit of the current transformer of main transformer branch definite value being set at zero and withdrawing from the main transformer branch optical fiber; Make the former limit of the current transformer definite value of main transformer branch switch to zero from the operation actual value; The main transformer branch that reaches non-operating state withdraws from differential protection and backup protection, realizes the process of bypass for the road.Because the requirement of System Operation state; Operation branch must participate in differential protection; Inoperative branch forbids participating in differential protection; The formation of main transformer differential correctly reflects the running status of system all the time in the present technique scheme, in digital transformer substation, successfully realizes the switching to the differential protection electric current, guaranteed in the digital transformer substation protection equipment for transformer main transformer other for process in safe operation.
Description of drawings
Fig. 1 is the sampling data passageway switching method flow chart in the main transformer protection of digitalized substation;
Fig. 2 passes by journey initial condition figure for bypass generation in the main transformer protection of digitalized substation;
Fig. 3 passes by journey intermediateness figure for bypass generation in the main transformer protection of digitalized substation;
Fig. 4 passes by journey done state figure for bypass generation in the main transformer protection of digitalized substation;
Fig. 5 is the sampling data passageway switching device shifter sketch map in the main transformer protection of digitalized substation.
Embodiment
Embodiment 1:
Present embodiment proposes the sampling data passageway switching method in a kind of main transformer protection of digitalized substation, and is as shown in Figure 1, comprising:
Step S1 receives operational order the former limit of the current transformer of bypass branch definite value is set at zero, and withdraws from bypass branch optical fiber;
Step S2 begins when falling the bypass operation, receives operational order the former limit of the current transformer of bypass branch definite value is set at preset value, and connect bypass branch optical fiber;
Step S3 in when falling the bypass operation, receives the operational order bypass branch switch that closes and breaks off the main transformer branch switch again; According to the operational order that receives the former limit of the current transformer of main transformer branch definite value is set at zero then, and withdraws from the main transformer branch optical fiber.
Becoming 220kV digital improvement engineering with Guangdong Zhong Shan three townshiies below is that example describes.In this project, 220kV and 110kV main electrical scheme are the bypass of double-bus band, are provided with special-purpose bypass breaker, comprise 3 main transformers altogether.
3 definite value districts that at first define main transformer protection are following:
1) 1 district refers to that the main transformer differential protection uprises this side of employing TA in employing this side TA (being current transformer), the change.
2) 2 districts refer to main transformer differential protection uprise adopt this side TA with bypass TA, become in this side of employing TA.
3) 3 districts refer to that the main transformer differential protection uprises this side of employing TA in employing bypass TA, the change.
Uprising with main transformer below is that example is explained the main transformer operating process in other generation, and definition 220kV bypass earlier is respectively for uprising process and being divided into 5 states altogether for road recovery process:
1) state 1 is for uprising the switch operation, and the 220kV by-pass switch breaks off.Specifically as shown in Figure 2.
2) state 2 uprises switch enclosure 220kV by-pass switch paired running for when falling the bypass.Specifically as shown in Figure 3.
3) state 3 uprises switch and breaks off for when falling bypass 220kV by-pass switch operation.Specifically as shown in Figure 4.
4) state 4 uprises switch and 220kV by-pass switch paired running when recovering for the road.
5) state 5 uprises switch operation, the disconnection of 220kV by-pass switch when recovering for the road.
Wherein, in Fig. 2, Fig. 3 and three accompanying drawings of Fig. 4,220kV is the bypass of double-bus band; Comprise I mother, female two buses of II and hospital bus bar; Listed main transformer branch and bypass branch among the figure respectively, current transformer CT1 has been arranged in main transformer branch, current transformer CT2 has been arranged on bypass branch; Main transformer branch is female with I through switch respectively with bypass branch, female two buses of II are connected, and main transformer branch links to each other with hospital bus bar through K switch 1.
Carry out earlier below for the description of passing by journey:
Step S1 receives operational order the former limit of the current transformer of bypass branch definite value is set at zero, and withdraws from bypass branch optical fiber.Operational order can also can be pre-programmed setting from engineering staff's manual command both.Before bypass was for the road, transformer was in the operation of main transformer branch, and this moment, main transformer branch normally moved, and current differential protection is 1 district, predefined definite value district.After receiving operational order, make the bypass branch that is in non-operating state withdraw from differential protection, inoperative branch forbids participating in the requirement of differential protection when satisfying system's operation.It is to be zero to realize through being set in the former limit of circuit instrument transformer definite value on the bypass branch that bypass branch withdraws from differential protection and backup protection, and to withdraw from soft pressing plate be 1 to realize that the optical fiber of bypass branch withdraws from through setting bypass branch optical fiber.Present circuit state is in state 1, promptly uprises the switch operation, and the 220kV by-pass switch breaks off.
Step S2; Begin when falling the bypass operation; Receive operational order the former limit of the current transformer of bypass branch definite value is set at preset value; Electric current in this moment bypass branch optical fiber begins to count differential protection and backup protection (current electric current is 0), and to withdraw from soft pressing plate through setting bypass branch optical fiber be 0 to connect bypass branch optical fiber.After accomplishing this step, differential protection is switched to 2 districts, definite value district from 1 district, definite value district.Present circuit state is in state 2, promptly uprises switch and 220kV by-pass switch paired running.
Step S3, when falling the bypass operation, receive the operational order bypass branch switch that at first closes, main transformer branch and bypass branch begin to flow through simultaneously electric current, then break off the main transformer branch switch again.According to the operational order that receives the former limit of the current transformer of main transformer branch definite value is set at zero then; Make main transformer branch withdraw from differential protection and backup protection; And the voltage of protection usefulness switches to bypass branch from main transformer branch, and to withdraw from soft pressing plate be 1 to withdraw from the main transformer branch optical fiber through setting the main transformer branch optical fiber.After accomplishing this step, differential protection is switched to 3 districts, definite value district from 2 districts, definite value district.Present circuit state is in state 3, i.e. 220kV by-pass switch operation uprises switch and breaks off.
Description through present embodiment; The present technique scheme is according to the main transformer process in other generation; Change the main transformer differential formation through switching several definite values district; And main transformer differential constitutes the running status that reflects primary system all the time, has guaranteed that protection equipment for transformer is in the other safe operation for process of main transformer in the digital transformer substation.
Such scheme has been described sampling data passageway switching method and has been passed by the application in the journey in bypass generation, and for sampling data passageway switching method for the application in the recovery process of road, specifically also comprise following process:
Step S4; When beginning bypass for the road recovery operation; Receive operational order the former limit of the current transformer of main transformer branch definite value is set at preset value; Electric current in this moment main transformer branch optical fiber begins to count differential protection and backup protection, and to withdraw from soft pressing plate be 0 to connect the main transformer branch optical fiber through setting the main transformer branch optical fiber.Because bypass branch normally moves before, the main transformer differential protection is 3 districts, predefined definite value district.After accomplishing this step, differential protection is switched to 2 districts, definite value district from 3 districts, definite value district.Current circuit state is a state 4, promptly belongs to uprise switch and 220kV by-pass switch paired running when bypass recovers for the road.
Step S5 when carrying out bypass for the road recovery operation, receives the operational order main transformer branch switch that closes, and bypass branch and main transformer branch begin to flow through simultaneously electric current, then break off the bypass branch switch again; According to the operational order that receives the former limit of the current transformer of bypass branch definite value is set at zero, bypass branch withdraws from differential protection and backup protection, and to withdraw from soft pressing plate be 1 to withdraw from bypass branch optical fiber through setting bypass branch optical fiber.After accomplishing this step, differential protection is switched to 1 district, definite value district from 2 districts, definite value district.Current circuit state is a state 5, promptly belongs to uprise the switch operation when bypass recovers for the road, and the 220kV by-pass switch breaks off.
It is similar to uprise the operation and the aforesaid operations process in simultaneously other generation in the change in other generation, the change, and the scheme that switch in the definite value district when just carrying out differential protection is set difference to some extent.Can through consider main transformer become in or uprise all might be by other generation, and consider to become neutralization and uprise simultaneously by the possibility in other generation, define the definite value district of more main transformer protection.
Embodiment 2:
The present invention also proposes the sampling data passageway switching device shifter in a kind of main transformer protection of digitalized substation simultaneously, and is as shown in Figure 5, comprising: receiver module, bypass branch module, main transformer branch module and line switching module.
Wherein, receiver module is used to receive operational order; Operational order can also can be pre-programmed setting from engineering staff's manual command both.
The bypass branch module is used to set bypass branch current transformer former limit definite value and control bypass branch optical fiber connects.When receiver module receives operational order; Can send corresponding control signal according to the operational order content; The bypass branch module receives the control signal from receiver module; Carry out next step action then, for example set the former limit of bypass branch current transformer definite value, the connection of control bypass branch optical fiber or the like.The former limit of current transformer on bypass branch definite value can be set to zero or other predetermined values through this bypass branch module.And the optical fiber connection status of bypass branch can be confirmed through the value that this bypass branch module settings bypass branch optical fiber withdraws from soft pressing plate, and when the value that withdraws from soft pressing plate when bypass branch optical fiber was set to 1, bypass branch optical fiber was withdrawed from expression; When the value of the soft pressing plate of bypass branch optical fiber was set to 0, expression connected bypass branch optical fiber.
Main transformer branch module is used to set main transformer branch current instrument transformer former limit definite value and control main transformer branch optical fiber connects.When receiver module receives operational order; Can send corresponding control signal according to the operational order content; Main transformer branch module receives the control signal from receiver module; Carry out next step action then, for example set the former limit of main transformer branch current instrument transformer definite value, the connection of control main transformer branch optical fiber or the like.The former limit of current transformer in main transformer branch definite value can be set to zero or other predetermined values through this main transformer branch module.And the optical fiber connection status of main transformer branch can be confirmed through the value that this main transformer branch module settings main transformer branch optical fiber withdraws from soft pressing plate, and when the value that withdraws from soft pressing plate when the main transformer branch optical fiber was set to 1, the main transformer branch optical fiber was withdrawed from expression; When the value of the soft pressing plate of main transformer branch optical fiber was set to 0, expression connected the main transformer branch optical fiber.
The line switching module is used for the control circuit switch, comprises the switch of bypass branch and the switch of main transformer branch, according to the closed state such as perhaps disconnection etc. of these switches of control signal control that receive.
Still describe with the three township 220kV digital improvement engineerings of the Guangdong Zhong Shan among the embodiment 1 below, present embodiment uses among the embodiment 1 the definite value district of definition equally and 220kV bypass generation uprises process and describe the course of work of this device for 5 kinds of states of road recovery process.
At first receiver module receives operational order.Before bypass was for dataway operation, transformer normally moved in main transformer branch, and this moment, differential protection was 1 district, predefined definite value district, i.e. main transformer differential protection uprises adopts this side TA (being current transformer).According to the requirement of system's operation, the bypass branch of the bypass of non-operating state forbids participating in differential protection.So will receive operational order earlier, make bypass branch withdraw from differential protection.After receiver module receives operational order, can send control signal corresponding to bypass branch module according to operational order.The bypass branch module is set at zero according to the control signal that receives with the former limit of the current transformer of bypass branch definite value.Bypass branch just can withdraw from differential protection and backup protection like this.In order to guarantee that further bypass branch withdraws from differential protection, can also the value that bypass branch optical fiber withdraws from soft pressing plate be set at 1, realize withdrawing from of bypass branch optical fiber.Present circuit state is in state 1, promptly uprises the switch operation, and the 220kV by-pass switch breaks off, and is specifically as shown in Figure 2.
Begin when falling the bypass operation, receiver module receives operational order, prepares to carry out the switching in definite value district, sends control signal corresponding to bypass branch module according to operational order.The bypass branch module is set at preset value according to control signal with the former limit of the current transformer of bypass branch definite value, and the electric current in the bypass branch optical fiber begins to count differential protection and backup protection (current electric current is 0) at this moment.And the bypass branch module is 0 to connect bypass branch optical fiber through the value of setting bypass branch optical fiber and withdrawing from soft pressing plate.After accomplishing this step, differential protection is switched to 2 districts, definite value district from 1 district, definite value district, i.e. main transformer differential protection uprises adopts this side TA and bypass TA.Present circuit state is in state 2, promptly uprises switch and 220kV by-pass switch paired running, and is specifically as shown in Figure 3.
When falling the bypass operation; Receiver module receives operational order; Send according to operational order and to control signal to line switching module and said main transformer branch module; The line switching module is according to the control signal bypass branch switch that closes, and main transformer branch and bypass branch begin to flow through simultaneously electric current, then break off the main transformer branch switch again.Main transformer branch module is set at zero according to control signal with the former limit of the current transformer of main transformer branch definite value then, makes main transformer branch withdraw from differential protection and backup protection, and the voltage of protection usefulness switches to bypass branch from main transformer branch.For further guaranteeing that main transformer branch withdraws from differential protection and backup protection, and main transformer branch module to withdraw from soft pressing plate be 1 to withdraw from the main transformer branch optical fiber through setting the main transformer branch optical fiber according to the operational order that receives.After accomplishing this step, differential protection is switched to 3 districts, definite value district from 2 districts, definite value district, i.e. main transformer differential protection is adopted to uprise and adopted bypass TA.Present circuit state is in state 3, i.e. 220kV by-pass switch operation uprises switch and breaks off, and is specifically as shown in Figure 4.
Description through present embodiment; The present technique scheme changes the main transformer differential formation through switching several definite values district; And main transformer differential constitutes the running status that reflects primary system all the time, has guaranteed that protection equipment for transformer is in the other safe operation for process of main transformer in the digital transformer substation.
Such scheme has been described this device and has been passed by the application in the journey in bypass generation, and for this device for the application in the recovery process of road, specifically also comprise following process:
Before bypass was carried out for the road recovery operation, bypass branch normally moved, and the main transformer differential protection is 3 districts, predefined definite value district, i.e. main transformer differential protection uprises adopts bypass TA.
When beginning bypass for the road recovery operation; Receiver module receives operational order; Send according to operational order and to control signal to main transformer branch module; Main transformer branch module is set at preset value according to the control signal that receives with the former limit of the current transformer of main transformer branch definite value, and the electric current in the main transformer branch optical fiber begins to count differential protection and backup protection at this moment.And main transformer branch module is according to control signal, and the value that setting main transformer branch optical fiber withdraws from soft pressing plate is 0, connects the main transformer branch optical fiber, further guarantees the connection of main transformer branch optical fiber.After the completion, differential protection is switched to 2 districts, definite value district from 3 districts, definite value district.Current circuit state is a state 4, promptly belongs to uprise switch and 220kV by-pass switch paired running when bypass recovers for the road.
When carrying out bypass for the road recovery operation, receiver module receives operational order, sends according to operational order and controls signal to line switching module and bypass branch module.The line switching module is according to the control signal main transformer branch switch that closes, and bypass branch and main transformer branch begin to flow through simultaneously electric current, then break off the bypass branch switch again.The bypass branch module is set at zero according to the control signal that receives with the former limit of the current transformer of bypass branch definite value, and bypass branch withdraws from differential protection and backup protection.And the bypass branch module is 1 to withdraw from bypass branch optical fiber through the value of setting bypass branch optical fiber and withdrawing from soft pressing plate, further guarantees withdrawing from of bypass branch optical fiber.After the completion, differential protection is switched to 1 district, definite value district from 2 districts, definite value district.Current circuit state is a state 5, promptly belongs to uprise the switch operation when bypass recovers for the road, and the 220kV by-pass switch breaks off.
It is similar to uprise the operation and the aforesaid operations process in simultaneously other generation in the change in other generation, the change, and the scheme that switch in the definite value district when just carrying out differential protection is set difference to some extent.Can through consider main transformer become in or uprise all might be by other generation, and consider to become neutralization and uprise simultaneously by the possibility in other generation, define the definite value district of more main transformer protection.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection range of the present invention.
Claims (4)
1. the sampling data passageway switching method in the main transformer protection of digitalized substation is characterized in that, comprising:
Step S1 receives operational order the former limit of the current transformer of bypass branch definite value is set at zero, and withdraws from bypass branch optical fiber;
Step S2 begins when falling the bypass operation, receives operational order the former limit of the current transformer of bypass branch definite value is set at preset value, and connect bypass branch optical fiber;
Step S3 in when falling the bypass operation, receives the operational order bypass branch switch that closes and breaks off the main transformer branch switch again; According to the operational order that receives the former limit of the current transformer of main transformer branch definite value is set at zero then, and withdraws from the main transformer branch optical fiber.
2. according to the sampling data passageway switching method in the said main transformer protection of digitalized substation of claim 1, it is characterized in that, behind step S3, also comprise following steps:
Step S4 when beginning bypass for the road recovery operation, receives operational order the former limit of the current transformer of main transformer branch definite value is set at preset value, and connects the main transformer branch optical fiber;
Step S5 when carrying out bypass for the road recovery operation, receives the operational order main transformer branch switch that closes and breaks off the bypass branch switch again, according to the operational order that receives the former limit of the current transformer of bypass branch definite value is set at zero, and withdraws from bypass branch optical fiber.
3. the sampling data passageway switching device shifter in the main transformer protection of digitalized substation; It is characterized in that, comprising: be used to receive operational order receiver module, be used to set bypass branch module that bypass branch current transformer former limit definite value and control bypass branch optical fiber connects, be used to set main transformer branch module that main transformer branch current instrument transformer former limit definite value and control main transformer branch optical fiber connect and the line switching module that is used for the control circuit switch;
Said receiver module receives operational order; Send according to said operational order and to control signal to said bypass branch module; Said bypass branch module is set at zero according to said control signal with the former limit of the current transformer of bypass branch definite value, and withdraws from bypass branch optical fiber;
Begin when falling the bypass operation; Said receiver module receives operational order; Send according to said operational order and to control signal to said bypass branch module; Said bypass branch module is set at preset value according to said control signal with the former limit of the current transformer of bypass branch definite value, and connects bypass branch optical fiber;
When falling the bypass operation; Said receiver module receives operational order; Send according to said operational order and to control signal to said line switching module and said main transformer branch module, said line switching module is broken off the main transformer branch switch again according to the said control signal bypass branch switch that closes; Said then main transformer branch module is set at zero according to said control signal with the former limit of the current transformer of main transformer branch definite value, and withdraws from the main transformer branch optical fiber.
4. according to the sampling data passageway switching device shifter in the said main transformer protection of digitalized substation of claim 3, it is characterized in that,
When beginning bypass for the road recovery operation; Said receiver module receives operational order; Send according to said operational order and to control signal to said main transformer branch module; Said main transformer branch module is set at preset value according to the control signal that receives with the former limit of the current transformer of main transformer branch definite value, and connects the main transformer branch optical fiber;
When carrying out bypass for the road recovery operation; Said receiver module receives operational order; Send according to said operational order and to control signal to said line switching module and said bypass branch module, said line switching module is broken off the bypass branch switch again according to the said control signal main transformer branch switch that closes; Said bypass branch module is set at zero according to the control signal that receives with the former limit of the current transformer of bypass branch definite value, and withdraws from bypass branch optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101120163A CN101854052B (en) | 2010-02-08 | 2010-02-08 | Sampling data passageway switching method and device in main transformer protection of digitalized substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101120163A CN101854052B (en) | 2010-02-08 | 2010-02-08 | Sampling data passageway switching method and device in main transformer protection of digitalized substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101854052A CN101854052A (en) | 2010-10-06 |
| CN101854052B true CN101854052B (en) | 2012-07-25 |
Family
ID=42805367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101120163A Active CN101854052B (en) | 2010-02-08 | 2010-02-08 | Sampling data passageway switching method and device in main transformer protection of digitalized substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101854052B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368605B (en) * | 2011-10-23 | 2014-07-09 | 国家电网公司 | Wiring method of current loop of main transformer protection for side-band operation |
| CN102938539A (en) * | 2012-10-18 | 2013-02-20 | 杭州市电力局 | Double security arrangement implementation method for GOOSE (Generic Object Oriented Substation Event) virtual loop |
| CN103427404B (en) * | 2013-07-19 | 2016-04-06 | 南京南瑞继保电气有限公司 | Line protective devices and guard method thereof |
| CN110912079B (en) * | 2019-11-04 | 2021-11-09 | 深圳供电局有限公司 | Method for switching secondary current loop of CT (current transformer) during operation of bypass transformer switch |
| CN114050548B (en) * | 2021-11-12 | 2024-01-12 | 许继电气股份有限公司 | Differential protection method and device in special bypass wiring mode |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1992467A (en) * | 2005-12-30 | 2007-07-04 | 上海可鲁系统软件有限公司 | Digitalized substation management unit |
| CN101447697A (en) * | 2008-12-08 | 2009-06-03 | 中国电力科学研究院 | Microcomputer measuring and controlling protective device for centralized type digital transformer substation |
-
2010
- 2010-02-08 CN CN2010101120163A patent/CN101854052B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1992467A (en) * | 2005-12-30 | 2007-07-04 | 上海可鲁系统软件有限公司 | Digitalized substation management unit |
| CN101447697A (en) * | 2008-12-08 | 2009-06-03 | 中国电力科学研究院 | Microcomputer measuring and controlling protective device for centralized type digital transformer substation |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2006-50813A 2006.02.16 |
| 刘月兰.220kV变压器开关在旁代时的改进建议.《广西电力》.2007,(第4期),第65-67页. * |
| 姜成彬等.220kV变电站旁路代送线路操作继电保护切换分析.《吉林电力》.2009,第37卷(第3期),第42-45页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101854052A (en) | 2010-10-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101854052B (en) | Sampling data passageway switching method and device in main transformer protection of digitalized substation | |
| CN101431254B (en) | Intelligent apparatus GOOSE virtual terminal collocation method for digitized transforming plant | |
| CN104518564A (en) | Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method | |
| CN103701199B (en) | A kind of switching control system in parallel falling protection with cyclization choosing | |
| CN102386614A (en) | Method for sharing standby protecting device by power equipment in intelligent transformer substation | |
| CN102983627B (en) | Transition method of intellectualized monitoring system modification process of conventional transformer substation | |
| CN110601350A (en) | High-voltage self-adaptive area spare power automatic switching system and spare power automatic switching control method thereof | |
| CN204156594U (en) | A kind of region backup auto-activating device | |
| CN203014357U (en) | GOOSE message/switch value conversion device for relay protection digitized transformation | |
| CN206023211U (en) | A kind of little bar coupler blocking device of direct current | |
| CN205247185U (en) | Secondary control system of water cooling transformer | |
| CN108173245B (en) | The implementation method of combined floodgate is thought highly of in open circuit in a kind of intelligent substation | |
| CN208477096U (en) | Electronic current mutual inductor field calibration system | |
| CN202524088U (en) | Intelligent control 220kV three-winding transformer parallel running automatic switching device | |
| CN214626499U (en) | Spare power automatic switching device for transformer substation based on 5G communication | |
| CN209267182U (en) | A kind of subway low-voltage distribution system of band PLC backup power automatic switching function | |
| CN203984086U (en) | A kind of intelligent substation prepared auto restart debug system and intelligent substation | |
| CN202384837U (en) | Transformer station configurable comprehensive measurement and control device | |
| CN203660647U (en) | Parallel conversion control system with closed loop picked-out protection | |
| CN202059219U (en) | Remote operation control device of centralized control center of transformer substation | |
| CN202026153U (en) | Remote operation control device for high-voltage box type transformer | |
| CN112491014B (en) | Double-bus double-section and bus differential protection transformation method capable of reducing power failure time | |
| CN103346496B (en) | Intelligent substationization transformation double-bus protects the transition method that do not have a power failure | |
| CN208461537U (en) | A kind of automatic single channel output power distribution unit | |
| CN202918046U (en) | Intelligent spare power auto-switching device based on IEC61850 networking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |