CN104201696A - Integrated intelligent control method for multifunctional network type transformer area - Google Patents
Integrated intelligent control method for multifunctional network type transformer area Download PDFInfo
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- CN104201696A CN104201696A CN201410485237.3A CN201410485237A CN104201696A CN 104201696 A CN104201696 A CN 104201696A CN 201410485237 A CN201410485237 A CN 201410485237A CN 104201696 A CN104201696 A CN 104201696A
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- idle compensating
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- compensating control
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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
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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
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses an integrated intelligent control method for a multifunctional network type transformer area. A master reactive compensation controller is mounted in the transformer area and serves as a master station in default, and slave reactive compensation controllers are arranged on branches of downstream lines or terminals in the transformer area respectively and serve as slave stations in default. The master reactive compensation controller and the slave reactive compensation controllers communicate and exchange data through CAN (controller area network) serial port channels, and intermediate physical links adopt power cables as carriers. When the slave stations and the master station lose contact, the slave station nearest to the master station takes the place of the original master station to automatically enter the master station mode, and at any time, only the master station is in communication connection with a backstage and operators in a wireless manner. The integrated intelligent control method is used for integrally managing 0.4KV power distribution equipment of a rural network and realizing on-site management and control of low-voltage reactive equipment and uniform control of reactive control of the transformer area, and power supply environment is greatly improved.
Description
Technical field
The present invention relates to the distribution network systems of 0.4KV low-voltage platform area, be specifically related to a kind of multifunctional network Xing Tai district integrated intelligent control method, this method can realize network management and the control of platform district reactive power compensation, belongs to distribution control field.
Background technology
Along with science and technology and social progress, distribution automation technology is developed fast, and the raising of living standards of the people, also has higher requirement to the requirement of the quality of power supply simultaneously.The fail safe, reliability and the economy that how to improve power distribution network (rural power grids) electric power system are problem demanding prompt solutions, are also the striving directions of distribution automation simultaneously.
The effect that reactive power compensation is born in electronic power system is the power factor that improves electrical network, reduces the loss of supply transformer and conveying circuit, improves power supplying efficiency, improves power supply environment.So reactive power compensation device is in an indispensable very important position in power supply system.Reasonably select compensation arrangement, can accomplish to reduce to greatest extent the loss of network, power grid quality is improved.Otherwise, as selected or improper use, may there is electric power system voltage fluctuation, many unfavorable factors such as harmonic wave increase.
In the net reactive compensation system of existing city, city net radius of electricity supply is little, and low-pressure reactive compensation system is taked centralized compensation mode, sees Fig. 1, so system end voltage can meet quality of power supply requirement.
And in the distribution network systems of rural area, low-pressure reactive compensation system is taked centralized compensation mode equally, see Fig. 2, but because rural power load disperses, circuit is long, rural power grids radius of electricity supply is large, so now system end voltage is low, the quality of power supply is not high.Particularly, mainly there are the following problems for current rural area distribution network systems:
1, rural power grids 0.4KV takes centralized compensation, causes line terminal voltage low;
2, line end power factor is low, and line loss is large;
3, line end load is unclear, is difficult to take corresponding measure.
Summary of the invention
For prior art above shortcomings, the object of the present invention is to provide a kind of multifunctional network Xing Tai district integrated intelligent control method.This method can be done as a whole managing by rural power grids 0.4KV controller switching equipment and circuit, realizes low-voltage reactive power equipment and manages on the spot and control, and realizes the unified of platform district reactive power compensation and controls, and greatly improves power supply environment.
To achieve these goals, the technical solution used in the present invention is such:
A kind of multifunctional network Xing Tai district integrated intelligent control method, this method is for Var Compensator in Country Electric Power, Tai district is provided with a main idle compensating control and is defaulted as main website, in the each branch of downstream circuit of Tai district or terminal, be respectively equipped with reactive power compensation point, each reactive power compensation point is provided with from idle compensating control and is defaulted as slave station, is respectively used for realizing the reactive power compensation of region separately from idle compensating control; Each slave station, according to apart from the far and near number consecutively of main website, apart from far away, is numbered larger; Main idle compensating control with realize exchanges data from communicating by letter between idle compensating control by CAN serial ports passage, intermediate physical link adopts power cable as carrier, adopts power carrier mode to realize communication;
When after slave station and main website lost contact, replace original main website automatically to enter master station mode from the nearest slave station of main website, this slave station reads other slave station information on circuit as new main website with inquiry mode; Whenever only have down main website to communicate and be connected with backstage and control personnel by wireless mode.
Further, main idle compensating control is with respectively identical from idle compensating control structure, by main control circuit and the rectification circuit being connected with main control circuit respectively, display unit, keyboard, data acquisition and controlling unit, state indication unit, dynamic environment parameter acquisition unit and communication interface composition; Communication interface is made up of the CAN serial communication interface for communicating by letter between main website and slave station and ethernet interface, GSM/GPRS communication interface three parts; Rectification circuit is realized AC power and is converted DC power supply to, and the requirement according to module to power supply, takes multipath isolated power module.
Main idle compensating control and all power supplys from idle compensating control are supported AC220V/AC380V, and all idle compensating control power supply wirings are identical, to protect proper communication.
Main idle compensating control with respectively from idle compensating control by program embedded software fire compartment wall, the fail safe transmitting to improve data.
When each slave station detects malfunction, in time active upload is to main website, and main website receives after fault message,, realizes fault and uploads in time to Surveillance center's active upload warning message with GSM/GPRS or Ethernet mode.
Further, carry out as follows line loss calculating, establish the active power loss that Pn is n Nodes, Qn is the reactive power loss of n Nodes, the total active power loss of P1Wei Tai Qu, the reactive power loss in Q1Wei Tai district, i.e. 1 node Wei Tai district outlet point; Pn+1-Pn is every section of circuit active power loss, and Qn+1-Qn is every section of circuit reactive power loss; The total active loss of its circuit is Σ (Pn+1 – Pn), and total reactive loss is Σ (Qn+1 – Qn).
Compared to existing technology, the present invention has following beneficial effect:
1, as a whole managing done by 0.4KV controller switching equipment and circuit by the present invention, realizes low-voltage reactive power equipment and manage on the spot and control; Realize the unified control and management of platform district reactive power compensation; Greatly improve power supply environment.
2, the master controller in You Tai district is realized the collection of reactive power compensation point control device data on circuit, realizes platform district information spinner controller and end message and shares.
3, when designated time slave station does not receive main station monitoring information, wherein nearest slave station enters master station mode automatically, reads slave station information in bus with inquiry mode, thereby can remain the carrying out of overall control and reactive power compensation.
4, when each slave station detects malfunction, in time active upload is to main website, and main website receives after fault message, with GSM or Ethernet mode to Surveillance center's active upload warning message, realize fault and upload in time, be convenient to Surveillance center and grasp system mode and take in time counter-measure.
Brief description of the drawings
Fig. 1-existing city net reactive compensation system figure.
Fig. 2-existing Var Compensator in Country Electric Power system diagram.
Fig. 3-idle compensating control structural representation of the present invention.
Fig. 4-idle compensating control control flow chart of the present invention.
Fig. 5-data security authorizing procedure figure of the present invention.
Fig. 6-software firewall flow chart of the present invention.
The master/slave pattern automatic switchover of Fig. 7-the present invention flow chart.
Fig. 8-Var Compensator in Country Electric Power system configuration schematic diagram of the present invention.
The network channel schematic diagram of the main idle compensating control of Fig. 9-the present invention and management system.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Multifunctional network Xing Tai of the present invention district integrated intelligent control method, this method is exclusively used in Var Compensator in Country Electric Power, a main idle compensating control is installed in Tai district and default setting is main website, according to circuit length, in the each branch of downstream circuit of Tai district or terminal, establish respectively reactive power compensation point, each reactive power compensation point is provided with from idle compensating control default setting to be slave station, to see Fig. 8.Respectively being used for realizing the reactive power compensation of region (circuit) separately from idle compensating control,, taking reactive power requirement as primary compensation basis, is control foundation in conjunction with the size of power factor when reactive power compensation.Each slave station, according to apart from the far and near number consecutively of main website, apart from far away, is numbered larger; Main idle compensating control with realize exchanges data from communicating by letter between idle compensating control by CAN serial ports passage, intermediate physical link adopts power cable as carrier, adopts power carrier mode to realize communication.Ke Youtai of the present invention district master controller is realized assigning of each compensation point controller control command on circuit, can realize platform district multi-loading point reactive power compensation parameter monitoring and control by the main idle compensating control in platform district.
The idle compensating control in Jiang Tai of the present invention district is set to main website to realize host function, realizes the each intelligent management from idle compensating control below affiliated platform district, also can realize slave data upload, assign function.
Platform district idle compensating control has following intelligent protection function: temperature protection, under-voltage protection, overvoltage protection, o-volt protection, harmonic protection, the protections such as overcurrent protection.
The present invention is provided with master/slave pattern automatic switching function: in the time that the time slave station of agreement does not receive main station monitoring information, think slave station and main website lost contact, now replace original main website automatically to enter master station mode from the nearest slave station of main website, this slave station reads other slave station information on circuit as new main website with inquiry mode, and its algorithm is shown in Fig. 7.Whenever only have down main website to communicate and be connected with backstage and control personnel by wireless mode.The object of station of the present invention numbering is definite priority, and the numbering of standing is less, priority higher (1 is limit priority, and 0 is broadcast mode).
Main idle compensating control is with respectively identical from idle compensating control structure, referring to Fig. 3, by main control circuit and the rectification circuit being connected with main control circuit respectively, display unit, keyboard, data acquisition and controlling unit, state indication unit, dynamic environment parameter acquisition unit and communication interface composition.Rectification circuit is realized AC power and is converted DC power supply to, and the requirement according to module to power supply, takes multipath isolated power module.Idle compensating control of the present invention has multiple communication function: possess wired, wireless communication interface, wherein include CAN serial communication interface, ethernet interface and GSM/GPRS communication interface.Ethernet interface is realized the fast data exchange of controller and administrative center, when Dang Tai district network possesses, can realize data upload function.
Idle compensating control has many communication strings, can realize different modes to different management system reported datas.
Idle compensating control control flow of the present invention as shown in Figure 4.
Main idle compensating control and all power supplys from idle compensating control are supported AC220V/AC380V, and all idle compensating control power supply wirings are identical, to protect proper communication.
The main idle compensating control of the present invention with respectively from idle compensating control by program embedded software fire compartment wall, can realize the security control to communication data, the fail safe transmitting to improve data.The staff only with authority could communicate and send with idle compensating control instruction.Data security authorizing procedure of the present invention is shown in Fig. 5, and Fig. 6 is software firewall flow chart of the present invention.
When each slave station detects malfunction, in time active upload is to main website, and main website receives after fault message,, realizes fault and uploads in time to Surveillance center's active upload warning message with GSM/GPRS or Ethernet mode.
The present invention is provided with from idle compensating control, can carry out as follows line loss calculating, and this is irrealizable before.If Pn is the active power loss of n Nodes, Qn is the reactive power loss of n Nodes, the total active power loss of P1Wei Tai Qu, the reactive power loss in Q1Wei Tai district, i.e. 1 node Wei Tai district outlet point; Pn+1-Pn is every section of circuit active power loss, and Qn+1-Qn is every section of circuit reactive power loss; The total active loss of its circuit is Σ (Pn+1 – Pn), and total reactive loss is Σ (Qn+1 – Qn).
The network channel of the main idle compensating control of the present invention and management system (comprising operation management center and operation management personnel) is shown in Fig. 9, from scheming, can find out, one, main idle compensating control can arrive operation management center by passage 5, passage 1, also can realize backward supervision; Two, operation management center can arrive operation management personnel by passage 1, passage 2; Three, main idle compensating control can arrive operation management personnel by passage 4, passage 3, also can realize backward supervision; Four, operation management personnel can pass through passage 3, passage 4 is implemented management to intelligent controller; Also can pass through passage 2, passage 1 arrives operation management center, then passes through passage 1, communication 5 to main idle compensating control by operation management (monitoring) center.Therefore can communicate by letter directly to operation management personnel and alarm by GSM/GPRS in operation management center, reduces the time delay of bringing because of workflow; While operation management center can be realized long-range to the setting of main station controller parameter, also can pass through platform district intelligent controller (main website) monitor station district miscellaneous equipment, reduces operation and administrative expenses.
Controller power source, from acquisition circuit power taking, reduces installation difficulty.
Setting main website of platform of the present invention district powers on and notifies each slave station in main website mode, and each slave station carries out slave station mode automatically.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (6)
1. a multifunctional network Xing Tai district integrated intelligent control method, this method is for Var Compensator in Country Electric Power, Tai district is provided with a main idle compensating control and is defaulted as main website, it is characterized in that: in the each branch of downstream circuit of Tai district or terminal, be respectively equipped with reactive power compensation point, each reactive power compensation point is provided with from idle compensating control and is defaulted as slave station, is respectively used for realizing the reactive power compensation of region separately from idle compensating control; Each slave station, according to apart from the far and near number consecutively of main website, apart from far away, is numbered larger; Main idle compensating control with realize exchanges data from communicating by letter between idle compensating control by CAN serial ports passage, intermediate physical link adopts power cable as carrier, adopts power carrier mode to realize communication;
When after slave station and main website lost contact, replace original main website automatically to enter master station mode from the nearest slave station of main website, this slave station reads other slave station information on circuit as new main website with inquiry mode; Whenever only have down main website to communicate and be connected with backstage and control personnel by wireless mode.
2. multifunctional network Xing Tai according to claim 1 district integrated intelligent control method, it is characterized in that: main idle compensating control is with respectively identical from idle compensating control structure, by main control circuit and the rectification circuit being connected with main control circuit respectively, display unit, keyboard, data acquisition and controlling unit, state indication unit, dynamic environment parameter acquisition unit and communication interface composition; Communication interface is made up of the CAN serial communication interface for communicating by letter between main website and slave station and ethernet interface, GSM/GPRS communication interface three parts; Rectification circuit is realized AC power and is converted DC power supply to, and the requirement according to module to power supply, takes multipath isolated power module.
3. multifunctional network Xing Tai according to claim 1 district integrated intelligent control method; it is characterized in that: main idle compensating control and all power supplys from idle compensating control are supported AC220V/AC380V; all idle compensating control power supply wirings are identical, to protect proper communication.
4. multifunctional network Xing Tai according to claim 1 district integrated intelligent control method, is characterized in that: main idle compensating control with respectively from idle compensating control by program embedded software fire compartment wall, the fail safe transmitting to improve data.
5. multifunctional network Xing Tai according to claim 1 district integrated intelligent control method, it is characterized in that: when each slave station detects malfunction, active upload is to main website in time, main website receives after fault message,, realize fault and upload in time to Surveillance center's active upload warning message with GSM/GPRS or Ethernet mode.
6. multifunctional network Xing Tai according to claim 1 district integrated intelligent control method, it is characterized in that: carry out as follows line loss calculating, if Pn is the active power loss of n Nodes, Qn is the reactive power loss of n Nodes, the total active power loss of P1Wei Tai Qu, the reactive power loss in Q1Wei Tai district, i.e. 1 node Wei Tai district outlet point; Pn+1-Pn is every section of circuit active power loss, and Qn+1-Qn is every section of circuit reactive power loss; The total active loss of its circuit is Σ (Pn+1 – Pn), and total reactive loss is Σ (Qn+1 – Qn).
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| CN201410485237.3A CN104201696A (en) | 2014-09-22 | 2014-09-22 | Integrated intelligent control method for multifunctional network type transformer area |
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| CN201410485237.3A CN104201696A (en) | 2014-09-22 | 2014-09-22 | Integrated intelligent control method for multifunctional network type transformer area |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576670A (en) * | 2016-02-22 | 2016-05-11 | 宁波三星医疗电气股份有限公司 | Control method of reactive power compensator on basis of rural network power distribution area |
| CN113013889A (en) * | 2021-04-15 | 2021-06-22 | 小步科技(江门市)有限公司 | Master-slave intelligent control system based on transformer area reactive compensation |
| CN114614571A (en) * | 2022-03-31 | 2022-06-10 | 日照宇通坤和电力科技有限公司 | Distribution network feeder automatic system |
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| CN114614571A (en) * | 2022-03-31 | 2022-06-10 | 日照宇通坤和电力科技有限公司 | Distribution network feeder automatic system |
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