CN102593843B - Cloud compensation system for reactive power - Google Patents
Cloud compensation system for reactive power Download PDFInfo
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- CN102593843B CN102593843B CN201210043195.9A CN201210043195A CN102593843B CN 102593843 B CN102593843 B CN 102593843B CN 201210043195 A CN201210043195 A CN 201210043195A CN 102593843 B CN102593843 B CN 102593843B
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Abstract
The invention discloses a cloud compensation system for reactive power, which comprises reactive compensation devices arranged at low-voltages end of power transformers at different levels in a power grid and or a user end. The reactive compensation devices are all configured with reactive compensation terminals which are communicated with one another and communicated with the corresponding reactive compensation devices through serial ports; a reactive router is communicated with a control platform arranged at an electricity management section through a wire interface module and is communicated with the reactive compensation terminals; the reactive compensation devices collect self operating rate data which is sequentially sent to the control platform through the corresponding reactive compensation terminals and the reactive router; and the reactive compensation terminals control switching of the corresponding reactive devices in real time according to the order sent to the control platform from the reactive router. According to the invention, the cloud compensation system reasonably switches the reactive compensation equipment, so as to realize the optimized and fine compensation for the reactive power in the power grid under the condition of increasing little input.
Description
Technical field
The present invention relates to the compensation equipment of power system reactive power, especially a kind of cloud compensation system for reactive power.
Background technology
In electric power network, to the compensation of reactive power, be mainly at present to adopt capacitor switching or adopt current transformer to regulate two kinds of modes to compensate in the power transmission and distribution link of electrical network.The major defect that this bucking-out system exists: one, adopt capacitor switching compensation, fling-cut equipment is fixed, compensation inaccuracy, due to the fluctuation of power system reactive power, crosses and mends or owe to mend, and usually makes energy-saving effect give a discount; Two, adopt current transformer compensation, can realize the Continuous Compensation to reactive power, but input cost is very high; Three, in the power transmission and distribution link of electrical network, compensating, is to compensate on bus, and reactive capability is large, apparatus expensive, once damage, large to electric network influencing, maintenance, replacing trouble.
To sum up, there is limitation in the use of Reactive power compensation in power grid equipment at present, and electricity needs increase variation is very fast, in a short time, this electricity needs also can be along with economic fluctuation, and acute variation, and reactive power is from power delivery to compensation equipment or user side, due to the line loss of transmission line, will produce extra loss.
Summary of the invention
The object of the invention is to: a kind of cloud compensation system for reactive power is provided, can, on the basis of existing electrical network, by reasonable use reactive-load compensation equipment, dropping under the few prerequisite of increase, realizes optimization, fine compensation to reactive power in electrical network.
For achieving the above object, the present invention can take following technical proposals:
A kind of cloud compensation system for reactive power of the present invention, comprise the reactive power compensator that is arranged at respectively every one-level power transformer low-pressure end in electrical network and/or user side, each described reactive power compensator is all furnished with reactive power compensation terminal, each reactive power compensation terminal is passed through serial communication with the control module of corresponding reactive power compensator, and by the remote communication module setting within it, intercom mutually between each reactive power compensation terminal, also comprise at least one idle router, described idle router is communicated by letter with the control platform that is arranged at electric administrative department by its cable interface module, and communicate by letter with the remote communication module of each described reactive power compensation terminal by its route remote communication module, each reactive power compensator gathers the running state data of himself and the power system reactive power data of corresponding position, by corresponding reactive power compensation terminal, described idle router, pass to control platform successively, each described reactive power compensation terminal is according to the instruction of the control platform being come by idle router transmission, control in real time the switching of corresponding reactive power compensator, to realize the compensation of the reactive power to electrical network.
Described control platform is according to the reactive power data at each reactive power compensator place and the running state data of each reactive power compensator, switching to each reactive power compensator sorts, near reactive power compensator preferential switching large-capacity electrical apparatus, until the power factor maximum of electrical network.
Described reactive power compensation terminal also comprises control chip one, serial communication modular, memory module, display module and button, described button is used for restarting and reactive power compensation terminal is set, described display module is for showing the running status of reactive power compensation terminal and the information that reports an error, described memory module is for storing the error message of reactive power compensation terminal, so that reactive power compensation terminal is carried out to adjusting; Described idle router comprises control chip two, route remote communication module, information temporary storage device, cable interface module, connects button and indicator light, described connection button is for parameters and restart idle router, described indicator light is used to indicate running status, power supply status and the data transmit mode of idle router, and described information temporary storage device is for storing operating state and the idle information characteristics key element of reactive power compensation terminal; Described control platform comprises display unit, host computer and slave computer, described host computer comprises figure generation module, data disaply moudle, abnormal information processing module, described slave computer comprises control chip three, platform communication module and keyboard, described figure generation module is used for generating block diagram information, described data disaply moudle is for the demonstration of LED viewing area, described abnormal information processing module is for processing and demonstration to abnormal data information, and the control chip three-dimensional host computer of described slave computer transmits data reactive power data and abnormal data information.
Between the information temporary storage device of described idle router and control chip two, parallel connection is provided with feature identification module and information identification module, information characteristics key element that feature identification module stores is idle, when control chip sends write command, first by character recognition module, the idle information characteristics key element in the characteristic element of write idle information and information temporary storage device is compared, only upgrade different idle information characteristics key elements, and register, information identification module extracts the idle information characteristics in information temporary storage device, the information that has sent to control platform with control chip two is compared, only the idle information characteristics key element of upgrading is sent to control chip two, upgrade key element, described idle information characteristics key element comprises: reactive power compensation terminal address, periodicity and reactive power.
Compared with prior art the invention has the beneficial effects as follows: owing to adopting technique scheme, every one-level power transformer low-pressure end and/or user side in electrical network are equipped with reactive power compensator, each described reactive power compensator is all furnished with reactive power compensation terminal, the running state data of the corresponding reactive power compensator of each reactive power compensator collection and the power system reactive power data of corresponding position, successively by corresponding reactive power compensation terminal, described idle router passes to control platform, each described reactive power compensation terminal is according to the instruction of the control platform being come by idle router transmission, control in real time the switching of corresponding reactive power compensator, to realize the compensation of the reactive power to electrical network, the cloud compensation system for reactive power of this structure, having overcome prior art, only on bus, to compensate brought reactive capability large, apparatus expensive, once damage large to electric network influencing, the defects such as maintain and replace trouble, can be on the basis of the reactive power compensator of existing electrical network, by the control of described control platform, the rationally each described reactive power compensator of switching, drop under the few prerequisite of increase, between reactive power compensation terminal with one-level, can communicate, upper level reactive power compensation terminal and next stage reactive power compensation terminal room can communicate, the state that cloud compensation system for reactive power can collect each reactive power compensator (, whether in running status, capacity, compensation capacity is how many at present, also remain how many compensation capacities), thereby send instruction by controlling platform, control each reactive power compensator in electrical network whether switching and switching compensation number, to realize, the reactive power at each position in electrical network is carried out in real time, accurate compensation (being reactive power cloud compensation).
Further beneficial effect is, described control platform is according to the reactive power data at each reactive power compensator place and the running state data of each reactive power compensator, switching to each reactive power compensator sorts, near reactive power compensator preferential switching large-capacity electrical apparatus, until the power factor maximum of electrical network.Can utilize like this reactive power compensator that is distributed in the dispersion in electrical network, under the regulation and control of system, synthesize effective compensation required idle, the reactive power that reduces compensation is from power delivery to compensation equipment or the extra loss that produces because of the line loss of transmission line of user side.
Further beneficial effect is, due to the introducing of idle router, between the information temporary storage device of described idle router and control chip two and be provided with feature identification module and information identification module, information characteristics key element that feature identification module stores is idle, when control chip sends write command, first by character recognition module, the idle information characteristics key element in the characteristic element of write idle information and information temporary storage device is compared, only upgrade different idle information characteristics key elements, and register, information identification module extracts the idle information characteristics in information temporary storage device, the information that has sent to control platform with control chip two is compared, only the idle information characteristics key element of upgrading is sent to control chip two, upgrade key element, described idle information characteristics key element comprises: reactive power compensation terminal address, periodicity and reactive power, such system configuration, the state information amount due to the data message amount of reactive power in electrical network and the reactive compensator of electrical network of corresponding position of having solved is huge and directly restrict the collection of computer reactive compensation system to related data, control the transmission of data, and the difficult problem such as the raising of arithmetic speed, reduced cost, improved arithmetic speed, thereby further optimized the compensation effect of power system reactive power.
Accompanying drawing explanation
Fig. 1 is layout and the communication structure schematic diagram of reactive power compensation terminal of the present invention;
Fig. 2 is the syndeton schematic diagram of reactive power compensation terminal of the present invention in electrical network;
Fig. 3 is the structural representation of reactive power compensation terminal of the present invention;
Fig. 4 is the structural representation of idle router of the present invention;
Fig. 5 is the local optimum structural representation of Fig. 4;
Fig. 6 is the structural representation of control platform of the present invention.
Embodiment
As shown in Figures 1 to 6, a kind of cloud compensation system for reactive power of the present invention, comprises reactive power compensator 1, reactive power compensation terminal 2, and idle router three, and control platform 4;
Described reactive power compensation terminal 2 comprises control chip 1, serial communication modular 202, memory module 203, remote communication module 204, display module 205 and button 206, described button 206 is for restarting and reactive power compensation terminal 2 being set, described display module 205 is for showing the running status of reactive power compensation terminal 2 and the information that reports an error, described memory module 203 is for storing the error message of reactive power compensation terminal 2, so that control platform 4 or manually reactive power compensation terminal 2 carried out to adjusting.This just makes the reactive power compensation terminal of the present invention can be to existing reactive power compensator information in electrical network, to controlling the running state data of reactive power compensator and the power system reactive power data of corresponding position in platform (control system) transmission electrical network, and to corresponding reactive power compensator, transmit the director data of controlling platform in real time, control the switching of reactive power compensator, thereby realized, the reactive power at each position in electrical network is carried out in real time, compensated accurately.With respect to former reactive power compensator, the combination of reactive power compensation terminal of the present invention and reactive power compensator, make reactive power compensator by reactive power compensation terminal, realized and control centre's platform between intercommunication mutually, making the compensation equipment of reactive power compensator from grid nodes become one can communicate with control platform as required, the situations such as operation exception are sent to control platform in time, and be controlled platform control.With respect to former reactive power compensator, what is more important, reactive power compensation terminal of the present invention possesses the function of mutual communication, this just makes can carry out as required networking flexibly between compensation equipment, the quantity that forms the reactive power compensation terminal of subnet can be from 2 to n platforms, and the numeral of n (final number of units) depends on adopted communication protocol; The flexible communications of reactive power compensation terminal and the feature of networking, make reactive power compensation terminal there is multiple-working mode, except local compensation, also have---abnormality processing pattern: once occur that the reactive power compensator in electrical network, sends to reactive power compensation terminal by error message by serial ports extremely, reactive power compensation terminal is transmitted to this information again controls platform and reactive power compensation terminal around, under the control of control centre, the information of sending by reactive power compensation terminal, resumes operation again; Cooperative work mode: reactive power compensation terminal, pass through remote communication module, carry out mutual communication, worked in coordination with the compensation for a certain part of electrical network, the realization compensation that becomes more meticulous, compared to prior art, compensates meticulousr, compensation is more optimized, and is more conducive to give full play to the performance of existing reactive power compensator in electrical network;
Described idle router three is different from Internet network router, its object is not to realize the forwarding of information between different sub-network, but realize, the information state of reactive power compensation terminal 2 is transmitted to and controls platform 4, the instruction of controlling platform 4 is transmitted to reactive power compensation terminal 2.Described idle router three comprises control chip 2 301, route remote communication module 302, information temporary storage device 303, cable interface module 304, connects button 305 and indicator light 306, described control chip 2 301 consists of single-chip microcomputer or asic chip or FPGA, described connection button 305 is for parameters and restart idle router three, described indicator light 306 is used to indicate running status, power supply status and the data transmit mode of idle router three, and described information temporary storage device 303 is for storing the operating state of reactive power compensation terminal 2, as preferably, between the information temporary storage device 303 of idle router three and control chip 2 301 and be provided with feature identification module 307 and information identification module 308, feature identification module 307 is stored idle information characteristics key element, when control chip sends write command, first by character recognition module 307, the idle information characteristics key element in the characteristic element of write idle information and information temporary storage device 303 is compared, the interior different idle information characteristics key element of lastest imformation buffer 303, and register, information identification module 307 extracts the idle information characteristics in information temporary storage device 303, the information that has sent to control platform 4 with control chip 2 301 is compared, only the idle information characteristics key element of upgrading is sent to control chip 2 301, upgrade idle information characteristics key element, described idle information characteristics key element comprises: reactive power compensation terminal address, periodicity and reactive power,
Described control platform 4 comprises display unit 401, host computer and slave computer, described host computer comprises figure generation module 402, data disaply moudle 403, abnormal information processing module 404, described slave computer comprises control chip 3 405, platform communication module 406 and keyboard 407, described figure generation module 402 is for generating block diagram information, described data disaply moudle 403 is for the demonstration of LED viewing area, described abnormal information processing module 404 is for the processing to abnormal data information and demonstration, the control chip 3 405 of described slave computer transmits data reactive power data and abnormal data information to host computer,
In electrical network, power transformer low-pressure ends at different levels and the larger user side of electrical capacity are equipped with reactive power compensator 1, each described reactive power compensator 1 is all furnished with described reactive power compensation terminal 2, each reactive power compensation terminal 2 is passed through serial communication with the control module 101 of corresponding reactive power compensator 1, and by the remote communication module 204 setting within it, intercom mutually between each reactive power compensation terminal 2, idle router three is communicated by letter with the control platform 4 that is arranged at electric administrative department by its cable interface module 304, and communicate by letter with the remote communication module 204 of each described reactive power compensation terminal 2 by its route remote communication module 302, each reactive power compensator 1 gathers the running state data of himself and the power system reactive power data of corresponding position, by corresponding reactive power compensation terminal 2, described idle router three, pass to and control platform 4 successively, each described reactive power compensation terminal 2 is according to the instruction of the control platform 4 being come by idle router three transmission, control in real time the switching of corresponding reactive power compensator 1, to realize the compensation of the reactive power to electrical network.As preferably, described control platform 4 is according to the reactive power data at each reactive power compensator 1 place and the running state data of each reactive power compensator, switching to each reactive power compensator 1 sorts, near reactive power compensator 1 preferential switching large-capacity electrical apparatus, until the power factor maximum of electrical network.
Claims (1)
1. a cloud compensation system for reactive power, comprise the reactive power compensator (1) that is arranged at respectively every one-level power transformer low-pressure end in electrical network and/or user side, each described reactive power compensator (1) is all furnished with reactive power compensation terminal (2), each reactive power compensation terminal (2) is passed through serial communication with the control module (101) of corresponding reactive power compensator (1), and by the remote communication module (204) setting within it, intercom mutually between each reactive power compensation terminal (2), also comprise at least one idle router (3), described idle router (3) is communicated by letter with the control platform (4) that is arranged at electric administrative department by its cable interface module (304), and communicate by letter with the remote communication module (204) of each described reactive power compensation terminal (2) by its route remote communication module (302), each reactive power compensator (1) gathers the running state data of himself and the power system reactive power data of corresponding position, by corresponding reactive power compensation terminal (2), described idle router (3), pass to and control platform (4) successively, each described reactive power compensation terminal (2) is according to the instruction of the control platform (4) being come by idle router (3) transmission, control in real time the switching of corresponding reactive power compensator (1), to realize the compensation of the reactive power to electrical network,
The reactive power data that described control platform (4) is located according to each reactive power compensator (1) and the running state data of each reactive power compensator, switching to each reactive power compensator (1) sorts, near reactive power compensator (1) preferential switching large-capacity electrical apparatus, until the power factor maximum of electrical network;
Described reactive power compensation terminal (2) also comprises control chip one (201), serial communication modular (202), memory module (203), display module (205) and button (206), described button (206) is for restarting and reactive power compensation terminal (2) being set, described display module (205) is for showing the running status of reactive power compensation terminal (2) and the information that reports an error, described memory module (203) is for storing the error message of reactive power compensation terminal (2), so that reactive power compensation terminal (2) is carried out to adjusting;
Described idle router (3) comprises control chip two (301), route remote communication module (302), information temporary storage device (303), cable interface module (304), connects button (305) and indicator light (306), described connection button (305) is for parameters and restart idle router (3), described indicator light (306) is used to indicate running status, power supply status and the data transmit mode of idle router (3), and described information temporary storage device (303) is for storing operating state and the idle information characteristics key element of reactive power compensation terminal (2);
Described control platform (4) comprises display unit (401), host computer and slave computer, described host computer comprises figure generation module (402), data disaply moudle (403), abnormal information processing module (404), described slave computer comprises control chip three (405), platform communication module (406) and keyboard (407), described figure generation module (402) is for generating block diagram information, described data disaply moudle (403) is for the demonstration of LED viewing area, described abnormal information processing module (404) is for the processing to abnormal data information and demonstration, the control chip three (405) of described slave computer transmits data reactive power data and abnormal data information to host computer,
It is characterized in that: between the information temporary storage device (303) of described idle router (3) and control chip two (301), parallel connection is provided with feature identification module (307) and information identification module (308), feature identification module (307) is stored idle information characteristics key element, when control chip sends write command, first by character recognition module (307), the idle information characteristics key element in the characteristic element of write idle information and information temporary storage device (303) is compared, only upgrade different idle information characteristics key elements, and register, information identification module (308) extracts the idle information characteristics in information temporary storage device (303), the information that has sent to control platform (4) with control chip two (301) is compared, only the idle information characteristics key element of upgrading is sent to control chip two (301), upgrade key element, described idle information characteristics key element comprises: reactive power compensation terminal address, periodicity and reactive power.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127442A (en) * | 2007-06-22 | 2008-02-20 | 泰州苏源科电有限公司 | Control method and system for 10kV and lower distribution grid no power voltage optimized operation |
| CN201315490Y (en) * | 2008-11-14 | 2009-09-23 | 山东鲁电电气集团有限公司 | 10kV line optimal reactive power compensation control system |
| CN202616782U (en) * | 2012-02-24 | 2012-12-19 | 杭州再灵电子科技有限公司 | Reactive power cloud compensation system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127442A (en) * | 2007-06-22 | 2008-02-20 | 泰州苏源科电有限公司 | Control method and system for 10kV and lower distribution grid no power voltage optimized operation |
| CN201315490Y (en) * | 2008-11-14 | 2009-09-23 | 山东鲁电电气集团有限公司 | 10kV line optimal reactive power compensation control system |
| CN202616782U (en) * | 2012-02-24 | 2012-12-19 | 杭州再灵电子科技有限公司 | Reactive power cloud compensation system |
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Address after: Hangzhou City, Zhejiang Province, Binjiang District 310000 (pro) East Road No. 1805 Building 2 layer five Patentee after: ZHEJIANG NEW ZAILING TECHNOLOGY CO., LTD. Address before: Hangzhou City, Zhejiang province Binjiang District 310052 River Street East Road No. 1810 building 3 layer 3 Patentee before: Hangzhou Zailing Electronic Technology Co., Ltd. |
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