CN103346579A - Distribution network reactive power optimization closed loop control system - Google Patents

Distribution network reactive power optimization closed loop control system Download PDF

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Publication number
CN103346579A
CN103346579A CN2013103055730A CN201310305573A CN103346579A CN 103346579 A CN103346579 A CN 103346579A CN 2013103055730 A CN2013103055730 A CN 2013103055730A CN 201310305573 A CN201310305573 A CN 201310305573A CN 103346579 A CN103346579 A CN 103346579A
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China
Prior art keywords
reactive power
distribution network
loop control
control system
network
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Pending
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CN2013103055730A
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Chinese (zh)
Inventor
刘学锐
郑伟然
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STATE GRID SHANDONG SHANGHE POWER SUPPLY Co
State Grid Corp of China SGCC
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STATE GRID SHANDONG SHANGHE POWER SUPPLY Co
State Grid Corp of China SGCC
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Priority to CN2013103055730A priority Critical patent/CN103346579A/en
Publication of CN103346579A publication Critical patent/CN103346579A/en
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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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • 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
    • 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
    • Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
    • 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
    • Y04S10/40—Display of information, e.g. of data or controls
    • 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
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol

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Abstract

The invention discloses a distribution network reactive power optimization closed loop control system. The distribution network reactive power optimization closed loop control system comprises an SCADA system, a front-end computer, a database server, a reactive power work station, a schedule work station, a WEB server, an Ethernet ring network and telecontrol equipment, wherein the front-end computer is connected with the SCADA system, the front-end computer, the database server, the reactive power work station and the WEB server are respectively connected into the Ethernet ring network, the Ethernet ring network is connected with an upper-level AVC system, the WEB server is connected with a power management information system through a communication network, and the telecontrol equipment is respectively connected with the SCADA system, an on load tap changing transformer and a reactive power compensation device. The distribution network reactive power optimization closed loop control system achieves real-time control over voltage reactive power and enables voltage reactive power control of a distribution network to be more accurate. On the one hand, operation of the distribution network is made to be more reasonable, and losses are reduced, and on the other hand, the power supply quality is greatly improved, and the reliability index of power supply of the distribution network is met.

Description

The reactive power optimization closed-loop control system
Technical field
The present invention relates to control technique in power system, specifically a kind of reactive power optimization closed-loop control system.
Background technology
Along with the continuous expansion of The development in society and economy and electrical network scale, the voltage power-less control problem of distribution also seems more and more important.The control of voltage power-less also requires the variation along with network operation state and load, constantly adjusts.Particularly along with the improving constantly of distribution automation degree, the guarantee on the hardware is provided for the real-time control of voltage power-less.The data of existing idle work optimization control system need manual operation just can take from the SCADA system, the real-time that does not have data, must be through " peek--deduction---calculate ", just can obtain the idle work optimization scheme, operating personnel carry out artificial switched capacitor with reference to prioritization scheme then, adjust load tap changer, inefficiency, technology content is not high, has increased labour intensity.
Because the data of existing idle work optimization control system need manual operation just can take from the SCADA system, and must be through " peek--deduction---calculate ", just can obtain the idle work optimization scheme, operating personnel carry out artificial switched capacitor with reference to prioritization scheme then, adjust load tap changer, do not have the real-time of data, therefore, technology content is not high, and inefficiency has increased labour intensity.
Summary of the invention
For overcoming the deficiency that above-mentioned prior art exists, technical problem to be solved by this invention is to provide a kind of reactive power optimization closed-loop control system, carry out on-line analysis and calculating by real time datas such as each the node remote measurement of dispatching automation SCADA system acquisition the whole network, remote signalling, realize the real-time control of voltage power-less, make the voltage power-less control of electrical network more accurate.
The present invention solves the technical scheme that its technical problem takes: a kind of reactive power optimization closed-loop control system, comprise SCADA (Supervisory Control And Data Acquisition) system, it is characterized in that, also comprise front end processor, database server, idle work station, traffic control station, WEB server and ethernet ring network, described front end processor is connected with the SCADA system, and described front end processor, database server, idle work station, traffic control station and WEB server insert ethernet ring network respectively.
Further, described ethernet ring network also is connected with higher level AVC (automaitc voltage control) system.
Further, described WEB server is connected with the electrical management information system by communication network.
Further, also comprise the telemechanical apparatus that is connected with the SCADA system, described telemechanical apparatus is connected with reactive power compensator with on-load tap-changing transformer respectively.
The invention has the beneficial effects as follows that the present invention to reduce network loss, can guarantee that the capacity of reactive power compensation is at the state an of the best by idle work optimization; Carrying out capacitor control, on-load transformer tap changer adjustment and load by the voltage adjustment adjusts; By combining with reactive power compensator on the spot, accomplish that centralization and decentralization control coordinates mutually.The present invention has realized the real-time control of voltage power-less, makes the voltage power-less control of electrical network more accurate, makes the operation of electrical network more reasonable on the one hand, reduces the wastage; On the other hand, power supply quality is increased substantially, satisfy the reliability index of mains supply.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of reactive power optimization closed-loop control system of the present invention, it comprises SCADA system, front end processor, database server, idle work station, traffic control station, WEB server, ethernet ring network and telemechanical apparatus, described front end processor is connected with the SCADA system, described front end processor, database server, idle work station, traffic control station and WEB server insert ethernet ring network respectively, and described ethernet ring network also is connected with higher level AVC system; Described WEB server is connected with the electrical management information system by communication network; Described telemechanical apparatus is connected with the SCADA system, and by there being the connection switch of carrying to be connected with on-load tap-changing transformer, carries out the voltage adjustment, is connected with reactive power compensator by the reactive compensation switching controller, regulates in order to carry out idle dynamic.
The present invention is with the real-time measurement data, comprise that remote signalling, telemetry deliver on the front end processor through data acquisition system, the process front end processor is transmitted or is directly delivered to real time data in the shared data bank then, after optimization is analyzed on the idle work station, issue through the SCADA system from opposite path with remote control and remote regulating order again, thereby constitute closed-loop control system.Whole system of the present invention forms the real-time control system of closed loop via SCADA-front end processor-server-idle work station-server-front end processor-SCADA.
The present invention has idle work optimization and two functional modules of voltage control, when the load of electrical network and running status change greatly, and startup idle work optimization module.Under the normal condition, less, the voltage of network loss also meets the demands basically under the desirable running status of distribution; Under individual cases, need combine use with voltage regulator module.When the voltage deviation normal voltage of electrical network is big, then must the starting resistor adjusting module.
The present invention combines with reactive power compensator on the spot, accomplishes that centralization and decentralization control coordinates mutually.Centralized control has of overall importance and comprehensive, carries out reactive power compensation and voltage adjustment on a large scale; And control solves the idle control problem of local voltage on the spot, makes each concrete node satisfy the voltage power-less needs.
Compare with traditional idle work optimization control system, the present invention and SCADA system carry out interface, realized that remote signalling, telemetry and state estimation module measure in-service monitoring to electrical network, feasible on-Line Voltage idle work optimization supervisory control system based on the SCADA system is achieved, and it has the following advantages:
1, improved rate of qualified voltage and power factor:
Existing whole transformer stations have been realized on-load voltage regulation, and the capacitor of each transformer station has been realized grouping control.
2, reduce electric energy loss, obtained tangible wastage reducing and energy saving benefit.
After system put into operation, network loss declined by a big margin, and energy-saving effect is remarkable.
3, reduced on-load tap-changing transformer shunting switch action frequency.
Effectively reduce the adjusting number of times of on-load tap-changing transformer shunting switch, improved the useful life of equipment, and alleviated operation maintenance labour intensity.
4, can realize really that the whole network voltage power-less controls in real time, alleviate scheduling operator on duty labour intensity, improve the automatization level of electrical network.The present invention rationally adjusts from the whole network, has overcome the shortcoming that traditional VQC device only can carry out local control, has improved the whole control level of electrical network.Owing to adopt the AVC system to control automatically, the scheduling operator on duty is emancipated from hard work, there is more energy to carry out other traffic control, also improved rate of qualified voltage and power factor greatly simultaneously, reduced network loss.
5, small investment, the return rate height.
Adopt the AVC system, development cost are only arranged.Increase transformer station later on and also do not need to increase again investment.
The present invention has realized the automatic control of idle work optimization, has improved operating efficiency, has reduced labor intensity of operating personnel, has reduced network loss.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (4)

1. reactive power optimization closed-loop control system, comprise the SCADA system, it is characterized in that, also comprise front end processor, database server, idle work station, traffic control station, WEB server and ethernet ring network, described front end processor is connected with the SCADA system, and described front end processor, database server, idle work station, traffic control station and WEB server insert ethernet ring network respectively.
2. reactive power optimization closed-loop control system according to claim 1 is characterized in that, described ethernet ring network also is connected with higher level AVC system.
3. reactive power optimization closed-loop control system according to claim 1 is characterized in that, described WEB server is connected with the electrical management information system by communication network.
4. reactive power optimization closed-loop control system according to claim 1 is characterized in that, also comprises the telemechanical apparatus that is connected with the SCADA system, and described telemechanical apparatus is connected with reactive power compensator with on-load tap-changing transformer respectively.
CN2013103055730A 2013-07-19 2013-07-19 Distribution network reactive power optimization closed loop control system Pending CN103346579A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103997035A (en) * 2014-04-16 2014-08-20 国家电网公司 Power transformer and line economic operation closed loop control system and method
CN108448587A (en) * 2018-03-28 2018-08-24 合肥云智物联科技有限公司 Electric power control pressure system and its control method

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CN202837462U (en) * 2012-10-16 2013-03-27 天津市静海供电有限公司 Single-phase earth fault detecting system based on automatic voltage control

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Publication number Priority date Publication date Assignee Title
CN201518418U (en) * 2009-10-16 2010-06-30 巩义市供电公司 On-line distributed voltage reactive control system
CN202586361U (en) * 2012-05-17 2012-12-05 河南省电力公司鹤壁供电公司 Power system on-line voltage reactive optimization coordination control device
CN202837462U (en) * 2012-10-16 2013-03-27 天津市静海供电有限公司 Single-phase earth fault detecting system based on automatic voltage control

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103997035A (en) * 2014-04-16 2014-08-20 国家电网公司 Power transformer and line economic operation closed loop control system and method
CN108448587A (en) * 2018-03-28 2018-08-24 合肥云智物联科技有限公司 Electric power control pressure system and its control method

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Application publication date: 20131009