CN101800442B - Intelligent transformer substation voltage switching and paralleling method and device - Google Patents
Intelligent transformer substation voltage switching and paralleling method and device Download PDFInfo
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- CN101800442B CN101800442B CN2010101336149A CN201010133614A CN101800442B CN 101800442 B CN101800442 B CN 101800442B CN 2010101336149 A CN2010101336149 A CN 2010101336149A CN 201010133614 A CN201010133614 A CN 201010133614A CN 101800442 B CN101800442 B CN 101800442B
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- 238000002955 isolation Methods 0.000 claims abstract description 75
- 230000011664 signaling Effects 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000005192 partition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
Abstract
The invention relates to an intelligent transformer substation voltage switching and paralleling method and device. The voltage switching method of the double-bus power supply of the invention collects the voltage output quantity of two sets of electronic voltage transformers on the double bus, collects the input state signals of two isolation switches and controls and outputs the voltage of the corresponding bus according to the two sets of voltage output quantity and the corresponding isolation switch input state signals. When the input of a 1 primary isolation switch and the withdrawal of a 11 primary isolation switch withdraws, 1 primary voltage is output. When the input or the non-input state of the 1 primary isolation switch and the 11 primary isolation switch is collected, 11 primary voltage is output. The electronic voltage transformer output data of the invention has nothing to do with communication protocol. The invention does not have to decode the frame of the input signals, can output the digital quantity signals of a corresponding primary electric transformer directly, realizes the transparent transmission of the signals and has the advantages of simple realization and high reliability.
Description
Technical field
The invention belongs to electric power system mechanical and electrical protection field, the voltage that relates to electronic type voltage transformer digital interface output signal in the intelligent substation switches, side by side, relates in particular to intelligent transformer substation voltage switching, paralleling method and device.
Background technology
When carrying out an electric component operation of falling the bus, voltage switch or and array apparatus be used for guaranteeing that the bus that the needed secondary voltage of relaying protection, measuring instrument and automatics of an electric component is connected with primary element is corresponding.
In conventional substation, the method that voltage switches all is to need direct current operative power source, finishes voltage switching function by the operation to relay.The shortcoming of this method is: because direct current operative power source fault, isolating switch auxiliary contact fault, relay fault cause the voltage handoff failure; Voltage transformer secondary voltage reverse charge.
Along with the digital applications of new-style electronic instrument transformer in transformer station's electric parameters information gathering, new requirement has been proposed for voltage switching and array apparatus, for the digital signal of electric mutual inductor output controls to realize that by programming device voltage switches, provides side by side condition.
Switch, side by side for the voltage of electronic type voltage transformer output signal in the intelligent substation, existing realization voltage method arranged side by side, that switch is that signal is inserted combiner, adopt microprocessor and logical device that signal is separated frame earlier, repack transmission again according to the requirement of communication protocol again, this method data are handled more complicated, installation cost is very high, and the work of switching device shifter is subjected to the restriction of instrument transformer output data communication stipulations.
Summary of the invention
The purpose of this invention is to provide a kind of intelligent transformer substation voltage changing method, paralleling method, solving the data processing complex of existing method, the installation cost height, and the work of device is subjected to the problem of the restriction of instrument transformer output data communication stipulations.
Another object of the present invention provides a kind of intelligent transformer substation voltage switching device shifter and array apparatus, and with solution existing apparatus cost height, and the work of device is subjected to the problem of the restriction of instrument transformer output data communication stipulations.
The voltage-switching method technical scheme of a kind of double-bus power supply of the present invention is as follows, and the step of this method is as follows:
Gather the voltage output variable of two groups of electronic type voltage transformers on the double-bus;
Two isolation switch position signallings on the double-bus as opening into amount, are gathered two and opened into the amount status signal;
Voltage output variable and corresponding isolation switch according to two groups of electronic type voltage transformers that collect are opened the voltage of exporting respective bus bars into the control of amount status signal;
Drop into when collecting the female isolation switch of I, and the female isolation switch of II is when withdrawing from the female voltage of output I; Drop into when collecting the female isolation switch of II, and the female isolation switch of I female voltage of output II when withdrawing from; When collecting mother I, when the female isolation switch of II all drops into or all do not drop into, exporting the female voltage of II.
The technical scheme of the voltage switching device of a kind of double-bus power supply of the present invention is as follows, and this device comprises:
Logic controller is used for controlling the output of switching back voltage according to the voltage output variable of mother I who collects, the female isolation switch position signalling of II and corresponding voltage transformer;
Two voltage input end mouths are used for the access of I mother and mother's II voltage transformer voltage output variable, and are connected into the input port of logic controller respectively by the photo-electric control loop;
Two isolation switch position input ports are used for the input of I mother and the female isolation switch position signalling of II, and are connected into the input port of logic controller respectively by optocoupler;
The switched voltage output port, the output that is used for switching the back output voltage links to each other with the output port of logic controller by electric light conversion loop.
The technical scheme of the voltage paralleling method of a kind of sectionalized single busbar connection of the present invention or double-bus is as follows, and the step of this method is as follows:
Gather the voltage output variable of two groups of electronic type voltage transformers of two buses;
Two isolation switch position signallings on two buses as opening into amount, are gathered two and opened into the amount status signal;
The isolation switch position signalling of block switch or bus connection switch as opening into amount, is gathered this and opened into the amount status signal;
According to voltage output variable, two isolation switchs of two groups of electronic type voltage transformers that collect open into the amount status signal and side by side the switch isolation disconnecting link open into the amount status signal and control the output voltage of each section of back side by side;
When switch isolation disconnecting link arranged side by side drops into, the female isolation switch of I drops into, and the female isolation switch of II is when withdrawing from, and two buses are the voltage of back output I section side by side; When switch isolation disconnecting link arranged side by side drops into, the female isolation switch of II drops into, and the female isolation switch of I is when withdrawing from, and two buses are back output mother's II voltage side by side; When switch isolation disconnecting link arranged side by side withdraws from, when the female isolation switch of I and the female isolation switch of II all drop into or all do not drop into, the female output of I mother's I voltage, the female output of II mother's II voltage.
The technical scheme of a kind of sectionalized single busbar connection voltage of the present invention and array apparatus is as follows, and this device comprises:
Logic controller is used for controlling the output of voltage afterwards arranged side by side according to mother I who collects, mother's II isolation switch position signalling and the voltage output variable of corresponding voltage transformer;
Two voltage input end mouths are used for the access with mother I, mother's II voltage transformer voltage output variable, and are connected into the input port of logic controller by the photo-electric control loop;
Three isolation switch position input ports are used for the input of the female isolation switch position signalling of switch arranged side by side, mother I and II, are connected into the input port of logic controller respectively by optocoupler;
Two voltage output end mouths arranged side by side are used for the output output voltage of back two buses side by side, link to each other with the output port of logic controller by electric light conversion loop respectively.
Voltage of the present invention switches, paralleling method, irrelevant for electronic type voltage transformer output data and communication protocol, corresponding device need not to separate frame for input signal, the digital quantity signal of the original electron instrument transformer of directly output correspondence of device, realized the transparent transmission of signal, and realize simply the reliability height.
In voltage switching of the present invention and the array apparatus logic controller is set, the digital quantity output of electronic type voltage transformer is respectively by opto-electronic conversion loop input logic controller, and with each self-corresponding isolation switch position signalling as opening into amount, logic controller realizes that according to out into the amount state voltage switches, control side by side, and will switch or side by side after signal through electric light conversion loop output, voltage switches and array apparatus switches for voltage or the realization of paralleling method provides hardware supports, and realize simply the reliability height.
Description of drawings
Fig. 1 is the EVT voltage switching device schematic diagram of double-bus power supply;
Fig. 2 is EVT voltage and the array apparatus schematic diagram of single mother partition or double-bus.
Embodiment
Embodiment one:
The step of the voltage-switching method of double-bus power supply of the present invention is as follows:
Gather the voltage output variable of two groups of electronic type voltage transformers on the double-bus;
Two isolation switch position signallings on the double-bus as opening into amount, are gathered two and opened into the amount status signal;
Voltage output variable and corresponding isolation switch according to two groups of electronic type voltage transformers that collect are opened the voltage of exporting respective bus bars into the control of amount status signal;
As shown in table 1 below, drop into when collecting the female isolation switch of I, and the female isolation switch of II is when withdrawing from the female voltage of output I; Drop into when collecting the female isolation switch of II, and the female isolation switch of I female voltage of output II when withdrawing from; When collecting mother I, when the female isolation switch of II all drops into or all do not drop into, exporting the female voltage of II.
Embodiment two:
The voltage switching device of double-bus of the present invention power supply as shown in Figure 1, this device comprises:
Logic controller CPLD(also can use programmable device FPGA), be used for controlling the output of switching back voltage according to the voltage output variable of mother I who collects, the female isolation switch position signalling of II and corresponding voltage transformer;
Two voltage input end mouth A, B are used for the access of I mother and mother's II voltage transformer voltage output variable, and are connected into the input port of logic controller CPLD respectively by photo-electric control loop O/E;
Two isolation switch position input port PT1, PT2 are used for the input of I mother and the female isolation switch position signalling of II, and are connected into the input port of logic controller CPLD respectively by optocoupler;
Switched voltage output port X, the output that is used for switching the back output voltage, loop E/O links to each other with the output port of logic controller CPLD by the electric light conversion.
Embodiment three:
The step of single mother partition of the present invention or double-bus voltage paralleling method is as follows:
Gather the voltage output variable of two groups of electronic type voltage transformers on two buses;
Two isolation switch position signallings on two buses as opening into amount, are gathered two and opened into the amount status signal;
The isolation switch position signalling of block switch or bus connection switch as opening into amount, is gathered this and opened into the amount status signal;
According to voltage output variable, two isolation switchs of two groups of electronic type voltage transformers that collect open into the amount status signal and side by side the switch isolation disconnecting link open into the amount status signal and control the output voltage of each section of back side by side;
As shown in table 2 below, drop into when collecting switch isolation disconnecting link arranged side by side, the female isolation switch of I drops into, and the female isolation switch of II is when withdrawing from, and two buses are back output mother's I voltage side by side; When switch isolation disconnecting link arranged side by side drops into, the female isolation switch of II drops into, and the female isolation switch of I is when withdrawing from, and two buses are back output mother's II voltage side by side; Withdraw from when collecting switch isolation disconnecting link arranged side by side, when the female isolation switch of I and the female isolation switch of II all drop into or all do not drop into, the female output of I mother's I voltage, the female output of II mother's II voltage.
Embodiment four:
The voltage of single mother partition of the present invention or double-bus and array apparatus as shown in Figure 2, this device comprises:
Logic controller CPLD(also can use programmable device FPGA), be used for controlling the output of voltage afterwards arranged side by side according to mother I who collects, mother's II isolation switch position signalling and the voltage output variable of corresponding voltage transformer;
Two voltage input end mouth A, B are used for the access with mother I, mother's II voltage transformer voltage output variable, and are connected into the input port of logic controller CPLD by photo-electric control loop O/E;
Three isolation switch position input port PT, PT1, PT2 are used for the input of the female isolation switch position signalling of switch arranged side by side, mother I and II, are connected into the input port of logic controller CPLD respectively by optocoupler;
Two voltage output end mouth X arranged side by side, Y are used for the output output voltage of back two buses side by side, link to each other with the output port of logic controller CPLD by electric light conversion loop respectively.
Claims (2)
1. the voltage paralleling method of a sectionalized single busbar connection or double-bus is characterized in that the step of this method is as follows:
Gather the voltage output variable of two groups of electronic type voltage transformers of two buses;
Two isolation switch position signallings on two buses as opening into amount, are gathered two and opened into the amount status signal; The isolation switch position signalling of block switch or bus connection switch as opening into amount, is gathered this and opened into the amount status signal;
According to voltage output variable, two isolation switchs of two groups of electronic type voltage transformers that collect open into the amount status signal and side by side the switch isolation disconnecting link open into the logic of amount status signal and judge to control the output voltage of each section of back side by side: drop into when collecting switch isolation disconnecting link arranged side by side, the female isolation switch of I drops into, and when the female isolation switch of II withdrawed from, two buses are back output mother's I voltage side by side; When switch isolation disconnecting link arranged side by side drops into, the female isolation switch of II drops into, and the female isolation switch of I is when withdrawing from, and two buses are back output mother's II voltage side by side; Withdraw from when collecting switch isolation disconnecting link arranged side by side, when the female isolation switch of I and the female isolation switch of II all drop into or all do not drop into, the female output of I mother's I voltage, the female output of II mother's II voltage.
2. voltage and the array apparatus of a sectionalized single busbar connection or double-bus is characterized in that this device comprises:
Logic controller is used for controlling the output of voltage afterwards arranged side by side according to mother I who collects, mother's II isolation switch position signalling and the voltage output variable of corresponding voltage transformer;
Two voltage input end mouths are used for the access with mother I, mother's II voltage transformer voltage output variable, and are connected into the input port of logic controller by the photo-electric control loop;
Three isolation switch position input ports are used for the input of the female isolation switch position signalling of switch arranged side by side, mother I and II, are connected into the input port of logic controller respectively by optocoupler;
Two voltage output end mouths arranged side by side are used for the output output voltage of back two buses side by side, link to each other with the output port of logic controller by electric light conversion loop respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101336149A CN101800442B (en) | 2010-03-29 | 2010-03-29 | Intelligent transformer substation voltage switching and paralleling method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101336149A CN101800442B (en) | 2010-03-29 | 2010-03-29 | Intelligent transformer substation voltage switching and paralleling method and device |
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| CN101800442A CN101800442A (en) | 2010-08-11 |
| CN101800442B true CN101800442B (en) | 2013-09-04 |
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| CN2010101336149A Expired - Fee Related CN101800442B (en) | 2010-03-29 | 2010-03-29 | Intelligent transformer substation voltage switching and paralleling method and device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916403B (en) * | 2011-12-25 | 2015-03-11 | 许继电气股份有限公司 | Bus protection operation mode identification method based on regional power grid information |
| CN103023029B (en) * | 2012-12-26 | 2015-01-21 | 井陉县供电公司 | Automatic parallel off and parallel control device for sectionalized power supply of single busbar |
| CN103336190B (en) * | 2013-05-31 | 2016-09-07 | 国家电网公司 | Bis-mistake detection methods arranged side by side of PT |
| CN103606903B (en) * | 2013-11-18 | 2017-02-22 | 国家电网公司 | Bus differential motion protection locking device and method for realizing bus differential motion protection locking by utilizing bus differential motion protection locking device |
| CN103795147B (en) * | 2014-02-13 | 2015-07-22 | 国家电网公司 | Method for switching secondary voltages of multiple buses of intelligent substation |
| CN104237586B (en) * | 2014-08-19 | 2017-06-06 | 国网河南省电力公司济源供电公司 | The high-precision measuring system of double-bus power supply circuit |
| CN104993388B (en) * | 2015-06-30 | 2017-04-12 | 国家电网公司 | PT (Potential Transformer) paralleling device applied to transformer substation and voltage fault automatic identification method for PT (Potential Transformer) paralleling device |
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| CN2503657Y (en) * | 2001-09-07 | 2002-07-31 | 贵阳科兴达电力技术有限公司 | Low-voltage combined monitoring and protection device for electric power station |
| EP1956696A1 (en) * | 2006-10-20 | 2008-08-13 | ABB Technology AG | A MV or HV power distribution cubicle with integrated digital communication, and a multi-functional module for such a cubicle |
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2010
- 2010-03-29 CN CN2010101336149A patent/CN101800442B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2503657Y (en) * | 2001-09-07 | 2002-07-31 | 贵阳科兴达电力技术有限公司 | Low-voltage combined monitoring and protection device for electric power station |
| EP1956696A1 (en) * | 2006-10-20 | 2008-08-13 | ABB Technology AG | A MV or HV power distribution cubicle with integrated digital communication, and a multi-functional module for such a cubicle |
| CN201134619Y (en) * | 2007-12-29 | 2008-10-15 | 重庆市电力公司城区供电局 | Loop-closed electricity switching device for 10KV distributing network |
Non-Patent Citations (2)
| Title |
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| 关于双母线电压切换功能微机化的设计思路探讨;温富国、雷振锋、李旭等;《电力系统保护与控制》;20090916;第37卷(第18期);正文部分第105-107页，图1、9 * |
| 温富国、雷振锋、李旭等.关于双母线电压切换功能微机化的设计思路探讨.《电力系统保护与控制》.2009,第37卷(第18期),正文部分第105-107页，图1、9. |
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