CN102507999A - Method for treating electrical quantity during bypass substitution of substation - Google Patents
Method for treating electrical quantity during bypass substitution of substation Download PDFInfo
- Publication number
- CN102507999A CN102507999A CN2011103228069A CN201110322806A CN102507999A CN 102507999 A CN102507999 A CN 102507999A CN 2011103228069 A CN2011103228069 A CN 2011103228069A CN 201110322806 A CN201110322806 A CN 201110322806A CN 102507999 A CN102507999 A CN 102507999A
- Authority
- CN
- China
- Prior art keywords
- bypass
- switch
- unit
- voltage
- electric current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000006467 substitution reaction Methods 0.000 title abstract 8
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 210000005056 cell body Anatomy 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 6
- 210000004027 cell Anatomy 0.000 claims description 2
- 238000012790 confirmation Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Images
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a method for treating electrical quantity during bypass substitution of a substation. For the mode of connection of buses and a bypass bus, the bypass bus is connected with the buses by knife switches and bypass switches. The method comprises the following steps of: acquiring the electrical quantity; acquiring the switch quantity; setting the input of bypass substitution of a unit and determining whether the unit is in the state of bypass substitution or bypass substitution withdrawal; when a bypass substitution input platen of a unit is input, taking the sum of the instant current sampling values of a unit body switch and a bypass unit switch as the final logically computed current and taking the voltage of the bus connected with the unit as the final logically computed voltage; and when the three-phase current of the unit body switch is less than the set zero current and the unit body switch is in the open position, no longer computing the sum of the current. The method has the following beneficial effects that: the voltage and current are computed more accurately and reliably in the process of bypass substitution or bypass substitution withdrawal; and the risks of maloperation and failure to operate of the device are reduced.
Description
Technical field
The invention belongs to power automation technology control field, specially refer to a kind of bypass in the transformer station for the road or withdraw from the electric current and voltage calculating method that bypass generation passes by unit in the journey.
Background technology
At present in transformer station; Grid switching operation has a lot; Wherein bypass is exactly wherein a kind of for dataway operation; When certain bay unit bypass for the road or withdraw from bypass for the process on road in the time owing to exist by other situation about moving simultaneously for switch and by-pass switch, the power system safety and stability control device is to the calculating of the electric parameters such as electric current and voltage of this unit just become relative complex and out of true at this moment; The disposal route that this process is traditional mainly is whether to be in bypass for distance or cancel in the process of bypass for the road through this unit of form informing device that pressing plate leaves; When bypass Dai Lukai goes into pressing plate when dropping into, just take the electric current and voltage amount that the electric current and voltage amount of by-pass unit is used as the final logic of device, when the electric current and voltage amount that the electric parameters such as electric current and voltage of just taking this unit when withdrawing from into pressing plate are used as the final logic of device is opened in bypass; This traditional disposal route is especially cancelled for the road initial sum in the bypass process initial for the road in bypass; Only taking this unit switch or the by-pass unit switching voltage magnitude of current as final electric current and voltage amount, is very inaccurate, the error action of device that existence causes because of the inaccurate of electric parameters and the risk of tripping.
Summary of the invention
The objective of the invention is: provide a kind of can accurately calculate bypass for the road with cancel the method that bypass generation passes by the electric current and voltage amount of order unit of journey median generatrix institute.
In order to achieve the above object, technical scheme of the present invention is: electric parameters (the electric current and voltage amount of the bus institute order unit etc.) disposal route of transformer station's bypass during for the road, for the bus mode of connection of other female (hospital bus bar) of holding concurrently; Be connected through by-pass switch between hospital bus bar and the bus; Be connected with a plurality of unit on the bus, the unit is circuit or transformer, and each unit links to each other with bus through the body switch; Can other generation (bypass is for the road) arrive hospital bus bar through by-pass switch and grid switching operation
It is characterized in that:
(1) gathers electric parameters: the three-phase current of the body switch of each unit, the three-phase current of by-pass unit switch, the three-phase voltage of bus that each unit connects and the three-phase voltage of hospital bus bar that by-pass switch connects;
(2) gather switching value: the position contact point signal of the body switch of each unit, the position contact point signal of by-pass switch and each unit bypass opening for the road into signal;
(3) bypass of setting this unit opens into, confirmation unit whether be in bypass for the road or cancel the state of bypass for the road for the road.
(4) when certain unit bypass Dai Lukai goes into the pressing plate input; The electric current instantaneous sampling value of this cell body switch and by-pass unit switch is got and the magnitude of current of back as final logical calculated, got the final voltage of logical calculated of voltage conduct of the bus that connects of this unit; And when this cell body switch three-phase electricity flow all less than the position of " the no flow valuve " set and this cell body switch during in minute position; No longer carry out the calculating with electric current, the magnitude of current of voltage and by-pass switch of getting hospital bus bar is as the electric current and voltage amount of final logical calculated.
(5) when certain is withdrawed from bypass Dai Lukai and goes into pressing plate for the unit on road by bypass; With the electric current instantaneous sampling value sum of this cell body switch and by-pass unit switch the magnitude of current as final logical calculated; The voltage of getting hospital bus bar is as the voltage of final logical calculated, when by-pass switch three-phase electricity flow all less than " the no flow valuve " set; And when the position of by-pass switch during in minute position, no longer carry out the calculating with electric current, voltage and the Switch main body electric current of bus that switch connects of getting this unit is as the electric current and voltage amount of final logical calculated.
(6) bypass for the road or withdraw from bypass for the road with the electric current process in, the logical calculated of electric current is a crude sampling value sum.
(7) when bypass for behind the finishing of road with the electric current process; When if bypass Dai Lukai goes into the pressing plate input; The magnitude of current of voltage and by-pass switch of getting hospital bus bar is as the electric current and voltage amount of final logical calculated; If bypass Dai Lukai goes into pressing plate when withdrawing from, get the final electric current and voltage amount of logical calculated of voltage and the conduct of Switch main body electric current of the bus that switch connects of this unit.
(8) " the no flow valuve " of switch is according to 3%～6% setting of a ratings of each cell current mutual inductor;
Beneficial effect of the present invention: when bypass for the road or withdraw from the initiating process of bypass for the road; The present invention proposes that body switch and by-pass switch current instantaneous value are got and with the notion of electric current process; Make bypass for the road or to withdraw from bypass more accurately more reliable for the calculating of electric current and voltage amount in the process on road, the error action of device that greatly reduces device in this process and cause and the risk of tripping because of electric parameters inaccurate.Adopt method of the present invention can bypass for the road with cancel bypass generation and pass by accurate Calculation electric current and voltage amount in the journey, the error action of device that greatly reduces device in this process and cause and the risk of tripping because of electric parameters inaccurate.Solution bypass for the road with cancel safety and stability control device electric current and voltage in the by-pass procedure, the inaccurate problem of power calculation.
Description of drawings
Fig. 1 is transformer station's wiring sketch of double-bus band bypass.
Embodiment
Transformer station with the bypass of double-bus band is an example; Its connection type is as shown in Figure 1; The high-pressure side of transformer can be connected to double-bus and the hospital bus bar of 220kV respectively through isolating switch and isolation switch; That adopts the inventive method realizes that the bypass of transformer high-voltage side for the electric parameters accurate Calculation of road when cancelling bypass for the road, comprises the steps:
(1) the bypass Dai Lukai that adopts device of the present invention that #1 transformer high-voltage side is set goes into pressing plate, through open into form informing device #1 transformer high-voltage side whether be in bypass for the road or cancel the bypass state in generation;
(2) adopt device of the present invention to gather the three-phase voltage of three-phase current, #1 transformer high-voltage side bus and the hospital bus bar of #1 transformer high-voltage side switch, by-pass switch;
(3) adopt device of the present invention to gather the position signalling of #1 transformer high-voltage side switch, by-pass switch;
(4) when #1 transformer high-voltage side switch needs bypass for the road; The bypass Dai Lukai that at first drops into #1 transformer high-voltage side switch goes into pressing plate; Device detects bypass Dai Lukai and goes into after pressing plate drops into; Device gets with back each phase current instantaneous sampling value of #1 transformer high-voltage side switch and by-pass switch as each mutually final magnitude of current respectively; The three-phase voltage of getting #1 transformer high-voltage bus that side connects is as final voltage; When #1 transformer high-voltage side body switch three-phase electricity flow all less than the position of 3% and #1 transformer high-voltage side switch of a ratings of current transformer during in minute position, device no longer carries out the calculating with electric current, device is got the magnitude of current of voltage and by-pass switch of hospital bus bar as final #1 transformer high-voltage side electric current and voltage amount.
(5) when #1 transformer high-voltage side switch is cancelled bypass for the road; The bypass Dai Lukai that at first withdraws from #1 transformer high-voltage side switch goes into pressing plate; Device detects bypass Dai Lukai and goes into after pressing plate withdraws from; Device gets with back each phase current instantaneous sampling value of #1 transformer high-voltage side switch and by-pass switch as each mutually final magnitude of current respectively; The three-phase voltage amount of getting hospital bus bar is as final voltage; When by-pass switch three-phase electricity flow all less than the position of 3% and by-pass switch of a ratings of current transformer during in minute position, device no longer carries out the calculating with electric current, device is got voltage and the Switch main body electric current of #1 transformer high-voltage side bus that switch connects as final electric current and voltage amount.
(6) when bypass for behind the finishing of road with the electric current process; When if bypass Dai Lukai goes into the pressing plate input; The magnitude of current of voltage and by-pass switch of getting hospital bus bar is as the electric current and voltage amount of the final logical calculated of #1 transformer high-voltage side; If bypass Dai Lukai goes into pressing plate when withdrawing from, get the final electric current and voltage amount of logical calculated of voltage and the conduct of Switch main body electric current of the bus that switch connects of #1 transformer high-voltage side.
Claims (2)
1. electric parameters disposal route when transformer station's bypass is for the road; For the double other female mode of connection of bus; Be connected with by-pass switch through disconnecting link between hospital bus bar and the bus, be connected with a plurality of unit on the bus, the unit is circuit or transformer; Each unit links to each other with bus through body switch, disconnecting link, and can be other for arriving hospital bus bar through grid switching operation; It is characterized in that comprising the steps:
(1) gathers electric parameters: the three-phase current of the body switch of each unit, the three-phase current of by-pass unit switch, the three-phase voltage of bus that each unit connects and the three-phase voltage of hospital bus bar that by-pass switch connects;
(2) gather switching value: the position contact point signal of the body switch of each unit, the position contact point signal of by-pass switch and each unit bypass opening for the road into signal;
(3) bypass of setting this unit opens into, confirmation unit whether be in bypass for the road or cancel the state of bypass for the road for the road;
(4) when certain unit bypass Dai Lukai goes into the pressing plate input; The electric current instantaneous sampling value of this cell body switch and by-pass unit switch is got and the magnitude of current of back as final logical calculated, got the final voltage of logical calculated of voltage conduct of the bus that connects of this unit; And when this cell body switch three-phase electricity flow all less than the position of " the no flow valuve " set and this cell body switch during in minute position; No longer carry out the calculating with electric current, the magnitude of current of voltage and by-pass switch of getting hospital bus bar is as the electric current and voltage amount of final logical calculated;
(5) when certain is withdrawed from bypass Dai Lukai and goes into pressing plate for the unit on road by bypass; With the electric current instantaneous sampling value sum of this cell body switch and by-pass unit switch the magnitude of current as final logical calculated; The voltage of getting hospital bus bar is as the voltage of final logical calculated, when by-pass switch three-phase electricity flow all less than " the no flow valuve " set; And when the position of by-pass switch during in minute position, no longer carry out the calculating with electric current, voltage and the Switch main body electric current of bus that switch connects of getting this unit is as the electric current and voltage amount of final logical calculated;
(6) bypass for the road or withdraw from bypass for the road with the electric current process in, electric current be calculated as crude sampling value sum;
(7) when bypass for behind the finishing of road with the electric current process; When if bypass Dai Lukai goes into the pressing plate input; The magnitude of current of voltage and by-pass switch of getting hospital bus bar is as the electric current and voltage amount of final logical calculated; If bypass Dai Lukai goes into pressing plate when withdrawing from, get the final electric current and voltage amount of logical calculated of voltage and the conduct of Switch main body electric current of the bus that switch connects of this unit.
2. transformer station as claimed in claim 1 bypass is the electric parameters disposal route during for the road, it is characterized in that: " the no flow valuve " of switch set according to 3%～6% of a ratings of each cell current mutual inductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103228069A CN102507999A (en) | 2011-10-21 | 2011-10-21 | Method for treating electrical quantity during bypass substitution of substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103228069A CN102507999A (en) | 2011-10-21 | 2011-10-21 | Method for treating electrical quantity during bypass substitution of substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102507999A true CN102507999A (en) | 2012-06-20 |
Family
ID=46220105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103228069A Pending CN102507999A (en) | 2011-10-21 | 2011-10-21 | Method for treating electrical quantity during bypass substitution of substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102507999A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113495532A (en) * | 2020-04-01 | 2021-10-12 | 南京南瑞继保工程技术有限公司 | Inter-station communication control method for stable control |
| CN114050548A (en) * | 2021-11-12 | 2022-02-15 | 许继电气股份有限公司 | Differential protection method and device under special bypass connection mode |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458276A (en) * | 2007-12-11 | 2009-06-17 | 深圳市科陆电子科技股份有限公司 | Electric quantity computation method and apparatus and electric meter controlling equipment |
| CN201974473U (en) * | 2011-01-07 | 2011-09-14 | 安徽省电力科学研究院 | Bypass replacement electric quantity automatic discrimination and metering system |
-
2011
- 2011-10-21 CN CN2011103228069A patent/CN102507999A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458276A (en) * | 2007-12-11 | 2009-06-17 | 深圳市科陆电子科技股份有限公司 | Electric quantity computation method and apparatus and electric meter controlling equipment |
| CN201974473U (en) * | 2011-01-07 | 2011-09-14 | 安徽省电力科学研究院 | Bypass replacement electric quantity automatic discrimination and metering system |
Non-Patent Citations (2)
| Title |
|---|
| 李本瑜: "旁路代供变压器的电流切换回路改进方案", 《云南电力技术》 * |
| 苏明昕 等: "电量计量系统中旁路代路电量的统计和分析", 《宁夏电力（增刊）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113495532A (en) * | 2020-04-01 | 2021-10-12 | 南京南瑞继保工程技术有限公司 | Inter-station communication control method for stable control |
| CN114050548A (en) * | 2021-11-12 | 2022-02-15 | 许继电气股份有限公司 | Differential protection method and device under special bypass connection mode |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101478154A (en) | Measures for solving series AC, DC earthing and short circuit and novel design of DC system | |
| CN101714777B (en) | Control system for automatically switching wide areas of wide area backup power supply of electric power system | |
| CN102856981A (en) | Station-area protection and control device with protection and control functions in converting station | |
| CN204316189U (en) | Direct current system switch remote operation anti-error system | |
| CN104485736A (en) | Intelligent protection center-based wide-area backup protection system and method | |
| CN106059085B (en) | A kind of the Wide Area Power stratification protection and control system | |
| CN110098602B (en) | A power grid line fault isolation device and method | |
| CN102916394A (en) | On-site transformer protection system used for intelligent transformer substation | |
| CN101860018A (en) | High-voltage circuit breaker single-phase ground protection measurement and control system | |
| CN202076849U (en) | Centralized protection, measurement and control device for transformer station | |
| CN104917141B (en) | Optical fiber differential protective overlaps brake system | |
| CN105024356B (en) | A kind of 35kV and following voltage class ratiometric dynamic formula bus bar protecting method | |
| CN105743071B (en) | A kind of relay protection safety on line nargin assessment system | |
| CN104135066B (en) | Intelligent substation system | |
| CN102507999A (en) | Method for treating electrical quantity during bypass substitution of substation | |
| CN202840504U (en) | A 330KV ultra-high voltage zero-loss high-speed current-limiting protection device | |
| CN102263820A (en) | Network Communication Structure of Intelligent Substation Based on Protection Independence and Information Sharing | |
| CN106451773B (en) | The automatic system of intelligent transformer station process layer devices implementation method of function decoupling | |
| CN105932776A (en) | A Substation Secondary System Based on Main Subunit | |
| CN202034768U (en) | Microcomputer protective relaying device suitable for low voltage power distribution network and system thereof | |
| CN205407409U (en) | Novel intelligence low voltage distribution system | |
| CN108471107B (en) | A method and device for secondary error prevention of busbar intervals based on double busbar segmented wiring mode | |
| CN102882188A (en) | Centralized digital 35kV single-bus unit protection measurement and control system for 500kv substation | |
| CN102904222B (en) | Configuration method for regional power grid protection | |
| CN201663476U (en) | Power grid early warning and emergency dispatching command system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120620 |