CN202798005U - 10kV distribution network head end operation parameter remote acquisition system - Google Patents
10kV distribution network head end operation parameter remote acquisition system Download PDFInfo
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- 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
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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
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- 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
- Y04S40/126—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 wireless data transmission
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- 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 utility model relates to the reactive compensation of a power distribution network, i.e. a 10kV distribution network head end operation parameter remote acquisition system. The 10kV distribution network head end operation parameter remote acquisition system includes multiple follower reactive dynamic compensating devices and a power distribution line reactive optimization automatic control system. The follower reactive dynamic compensating devices are arranged on a low voltage side of a transformer and are switched on and off with the transformer. The power distribution line reactive optimization automatic control system includes multiple power distribution line reactive compensation intelligent terminals, GPRS network transmission devices, a communication server, an internet network, and a host computer. For the head end of the 10kV power distribution line, the secondary side power factor of the follower compensation transformer is above 0.9, and the average power factor is above 0.95. The bidirectional data exchange between the host computer and the slave computer is realized via the remote communication technology and the network technology, and the power factor and voltage dual-control is also realized.
Description
Technical field
The utility model relates to a kind of reactive power compensation of power distribution network, i.e. 10kV distribution head end operational factor remote gathering system.
Background technology
In the prior art, in the regional power grid, Intelligence Reactive Power optimization and control system are arranged using at home and abroad, day by day deep for the research of Reactive Power Optimization Algorithm for Tower.But the reactive power compensation of 10kV and following power distribution network development is relatively backward, not only since power distribution network have the load larger with seasonal fluctuation, the characteristics such as radius of electricity supply is longer, and line end voltage is lower, and the analytical method of distribution network var compensation and compensation way also has its particularity.Domestic like product, because volume is large, Heavy Weight must be installed (H platform) with two bars, such as power factor type compensation arrangement and SVC type compensation arrangement.The 10kV Reactive Compensation of Distribution Lines, the switching mode majority that in the past adopted is the power factor type, the SVC type also is to adopt power factor to compare and switching, is around the parameter of mounting points and controls, and can't consider the situation optimal control of whole distribution line.The optimization research of distribution network var compensation has been reported, but by the bidirectional data exchange between telecommunication technique and the network technology realization upper and lower computer, realizes the dual control of power factor and voltage, has no bibliographical information.
The utility model content
The purpose of this utility model is to provide a kind of mobile radio communication and INTER Internet technology utilized for above-mentioned deficiency, realizes the 10kV distribution head end operational factor remote gathering system of power factor and voltage dual control.
Technical solution of the present utility model is: 10kV distribution head end operational factor remote gathering system comprises some with device Reactive Compensation Device and distribution line idle work optimization automation control system; Be installed in step down side and same the cutting of the same throwing of transformer with the device Reactive Compensation Device; Distribution line idle work optimization automation control system comprises several Reactive Compensation of Distribution Lines intelligent terminals, GPRS network transmission, the communication server, internet network, host computer.
The reactive power compensation intelligent terminal comprises data transmission unit DTU, controller, fling-cut switch (high-pressure vacuum contactor) and compensation condenser.
Controller comprises input and processing module, is responsible for gathering voltage, current signal, indirectly tries to achieve power factor value, and these signals are converted to the signal that single chip control module can receive; Single chip control module adopts 16 high-speed microprocessors, and the compensation point parameter that gathers is analyzed and processed, be compensated the required initial data of decision-making, and send host computer to by the GPRS communication module, and accept the optimal control instruction of host computer, realize auto-compensation;
Communication module adopts the GPRS telecommunication, is responsible for setting up the communication port between single-chip microcomputer and host computer and other compensation arrangement.
The control circuit that comprises with the device Reactive Compensation Device comprises voltage transformer, signal conversion circuit, low pass filter, A/D converter, the microprocessor of 16 bit, photoelectrical coupler, relay drive circuit, relay, contactor, compensation condenser group.
The control method of 10kV distribution head end operational factor remote gathering system adopts power distribution network with device dynamic compensation method and Reactive Compensation of Distribution Lines optimization method;
Power distribution network is that power network current, voltage are sampled and processed with the device dynamic compensation method, thereby calculate the power factor of electrical network, and according to the switching of Arithmetic for Reactive Power Compensation control and compensation electric capacity, improve grid voltage quality to reach, improve the power factor of power distribution network, realize the effect of electric network reactive compensation;
The automatic switching of control capacitor is by the bidirectional data exchange between telecommunication technique and the network technology realization upper and lower machine in the Reactive Compensation of Distribution Lines optimization method, slave computer gathers the actual measurement voltage of each compensation point and switching situation and is transferred to host computer in the control room, host computer is power factor and the reactive power of the outlet of centralized integration transformer station again, determine each compensation point switching situation, again the switching command transfer to slave computer, reached the dual control of power factor and voltage.
Distribution line idle work optimization automation control system is comprised of the upper PC in the control room, idle compensating control (slave computer) and communication three parts in the distribution line.Basic ideas are that the reactive power compensator of installing on certain bar distribution line is carried out unified management by GPRS telecommunication technique and network technology, so that reactive power compensator can carry out the switching action according to the instruction of host computer.
The control method of 10kV distribution head end operational factor remote gathering system is to determine position and the capacity of the optimal compensation point by the voltage switching mode; The automatic switching of control capacitor is by the bidirectional data exchange between telecommunication technique and the network technology realization upper and lower computer, slave computer gathers the actual measurement voltage of each compensation point and switching situation and is transferred to upper PC in the control room, upper PC is power factor and the reactive power of the outlet of centralized integration transformer station again, determine each compensation point switching situation, again the switching command transfer to slave computer, reached the dual control of power factor and voltage.The idle work optimization scheme that adopts power distribution network to combine with the device dynamic compensation, along fixed compensation and dynamic compensation in the circuit dispersion compensation.
Power distribution network 10kV circuit idle work optimization automation control system utilizes mobile radio communication and INTER the Internet to have public resource now, and the disposable Meteorological of system Construction and operating cost are low; The switching on-load switch adopts high-pressure vacuum contactor, and the life-span is long, but single pole is installed; Current transformer must be installed, so that volume is little, installment work is easy; By electric substation's outlet reactive power and the control of power factor sampling remote data collection, realize the purpose (idle work optimization, switching control and management integrated) of voltage and power factor dual control, compared the automaticity height with the fling-cut switch of power factor controlling, cost performance is high.
Adopt with device compensation the compensation way that fixed compensation+dynamic compensation combines is set, fixed compensation is used for the unloaded part of compensator transformer, and dynamic compensation generally designs two groups, and from applicable cases as seen, it is respond well to compensate dynamic switching with device, and compensation effect is remarkable.Net mode in the interconnected public network of network using INTER or the APN; Mobile radio communication is adopted in communication.
The utility model has the advantages that: 1, realized power distribution network 10kV circuit idle work optimization automation control system; Determine position and the capacity of the optimal compensation point, simple installation by the voltage switching mode; The automatic switching of control capacitor is by telecommunication technique and network technology, realizes the bidirectional data exchange between the upper and lower computer, has reached power factor and voltage dual control purpose, has realized 10kV distribution line head end
The digitizing technique, telecommunication technique and the network technology that take full advantage of modern forefront are closely linked reactive power compensation optimization, reactive power compensation automation and dispatching automation management three.2, the Circuit Fault on Secondary Transformer power factor with the device compensation reaches more than 0.9.3, distribution network loss rate rate of descent reaches 5 percentage points after the compensation.4, realize power distribution network 10kV circuit idle work optimization automation control system, reactive power compensation accomplishes that automatic switching controls to control room host computer Remote and remote measurement from disperseing on the spot with settling at one go.5, the GA for reactive power optimization automation control system has been obtained good compensation effect, and power factor curve is comparatively mild, average power factor substantially reached 0.95 and more than, when improving power factor, also greatly improved quality of voltage, effectively reduce the loss of power distribution network, improve the power supply capacity of power distribution network and exerting oneself of power consumption equipment, technical indicator and economic index have all reached the project the set goal.6, the ruuning situation to circuit is very clear in the control room.Main control microcomputer in the control room, gather transformer station's outlet (circuit head end) power factor value and reactive power value according to dispatch automated system, actual measurement voltage and the switching situation of each Intelligent switching device in the circuit of telecommunications network transmission realize 10kV distribution line head end
7, system has accomplished that with reactive power compensation automatic switching controls to concentrated far remote control and the remote measurement in control room from disperseing on the spot with settling at one go, also the data of remote measurement are processed simultaneously and filed, realized the idle work optimization automation control system, improve simultaneously work quality and operating efficiency, reduced labour intensity.8, the switching on-load switch adopts high-pressure vacuum contactor, and the life-span is long, but single pole is installed; Current transformer must be installed, so that volume is little, installment work is easy.9, saving energy and decreasing loss has improved power factor, has lowered to a great extent the line loss of circuit by dynamic reactive power compensation, and has improved the voltage of line end.The Jilin Area long to radius of electricity supply has very important realistic meaning and social effect.10, realized the automatic management of reactive power compensator switching, reactive power compensation has been accomplished that automatic switching controls to the concentrated Remote in control room and remote measurement from disperseing on the spot with settling at one go, also the data of remote measurement are processed simultaneously and filed, realized the idle work optimization automation control system.10, provide low temperature resistant (40 ℃) with the device compensating controller, avoid occuring winter malfunction or misaction.11, by the bidirectional data exchange between telecommunication technique and the network technology realization upper and lower computer, realize the dual control of power factor and voltage.
Below in conjunction with accompanying drawing execution mode of the present utility model is described in further detail.
Description of drawings
Fig. 1 is distribution line idle work optimization automation control system topology sketch.
Fig. 2 is distribution line idle work optimization automation control system architecture sketch.
Fig. 3 is with device Reactive Compensation Device operation principle block diagram.
Fig. 4 is controller operation principle block diagram.
Embodiment
10kV distribution head end operational factor remote gathering system comprises some with device Reactive Compensation Device and distribution line idle work optimization automation control system.
Referring to Fig. 1, distribution line idle work optimization automation control system comprise Reactive Compensation of Distribution Lines intelligent terminal 1(several), GPRS transceiver 6, GPRS network transmission 2, the communication server 3, internet network 4, host computer 5, distribution line 8.Also comprise dispatch automated system.What idle work optimization was emphasized is the whole network optimization, rather than the optimization of some equipment or some points.Switching mode is voltage-type, and voltage-type does not need sample rate current, and volume is little, cost is low, and its compensation effect is much better than the power factor controlling type.Utilize the ripe at present network communications technology, strange land sampling, PC control mode.Be that two-way control is carried out in the voltage of switching device and the information of switching state and reactive power and the integration of power factor information of each transformer station's outlet head end of control room, utilize simultaneously fuzzy algorithmic approach selectively to carry out switching.Utilize digitizing technique, telecommunication technique and network technology have realized that the technology of idle work optimization, automation compensation and dispatching automation one is integrated.System adopts the DotNet technology to develop, and moves in the mode of C/S framework.The system that operates in client can be at any time and server interaction, the running status of each compensation arrangement on the monitoring wire.The system that operates on the server obtains the head end parameter of circuit in the dispatch automated system by local area network (LAN), communicates by letter with on-the-spot compensation arrangement by GPRS simultaneously, controls or obtain the running status of the compensation arrangement of working site.In database, database adopts SQL Server 2005 to design and manage to system server terminal with the real-time data memory obtained.System client can be to being stored in data analysis and the statistics in the database, and can generate statistical report form or derive with the form of Excel file.
Referring to Fig. 2, Reactive Compensation of Distribution Lines intelligent terminal 1(compensator) comprises data transmission unit DTU, controller, fling-cut switch and compensation condenser.
Referring to Fig. 3, comprise voltage transformer, signal conversion circuit, low pass filter, A/D converter, the microprocessor of 16 bit, photoelectrical coupler, relay drive circuit, relay, contactor, compensation condenser group with the control circuit of device Reactive Compensation Device.Based on AC Data, utilize the microprocessor of 16 bit power network current, voltage are sampled and to process, thereby calculate the power factor of electrical network, and according to the switching of Arithmetic for Reactive Power Compensation control and compensation electric capacity, realize the effect of electric network reactive compensation.This device can be installed on the same stage with distribution transformer, also can be suspended on the electric pole.This device adopts 16 high speed processors as the core of controller, and AC sampling has overvoltage protection and under-voltage protection function.Consider winter severe cold, the control electronic component all adopts military grade, is applicable to-40 ℃～+ 50 ℃ operating temperature ranges.Switching according to the situation of change control capacitor of perceptual idle, the line voltage of system and power factor improves grid voltage quality to reach, and improves the power factor of power distribution network, the purpose of wastage reducing and energy saving.
Ubc → voltage transformer → signal conversion circuit → low pass filter → A/D converter → microprocessor of 16 bit → photoelectrical coupler → relay drive circuit → relay → contactor → compensation condenser group;
Ia → current transformer → signal conversion circuit → low pass filter → A/D converter → microprocessor of 16 bit → photoelectrical coupler → relay drive circuit → relay → contactor → compensation condenser group.
Referring to Fig. 4, controller is by input and processing module, single chip control module, and several parts such as communication module form.Input and processing module are responsible for gathering voltage, current signal, indirectly try to achieve power factor value, and these signals are converted to the signal that single chip control module can receive.The GPRS remote communication module is adopted in communication, is responsible for setting up the communication port between single-chip microcomputer and host computer and other compensation arrangement.What the control core of idle compensating control adopted is 16 high-speed microprocessors, and the compensation point parameter that gathers is analyzed and processed, and is compensated the required initial data of decision-making, and sends host computer to by the GPRS communication module.And accept the optimal control instruction of host computer, realize auto-compensation.
These software systems are divided into following seven large functional modules:
1. switching fact retrieval module running status from compensator to database server that will regularly inquire about all circuits and, and result for retrieval being stored in the database of client is used for analyzing and shows running status.
2. the operation condition in site display module will be according to user-selected fixed query context, shows operation conditions in this scope such as transformer station, circuit, compensator group or compensator that certain is concrete, demonstrates simultaneously the attribute of selected objects.
3. switching historical analysis module is used for showing in the mode of figure the changing condition of each compensator switching event change process on certain circuit and the switching capacity in certain time period.
4. static compensation switching event maintenance module is can be easily switching situation and the dynamic compensation of static compensator to be carried out analysis-by-synthesis and statistics for the user that makes system.
5. the compensator statistical module allows the compensator of user in the different range to add up switching capacity in certain time period as statistical unit, is used for analyzing and decision-making.
6. switching event enquiry module allows the user to construct querying condition, and the switching event of compensator in specifying moment scope specified in inquiry.
7. the Main Function of network topology maintenance module is to allow the user when increase newly or transform line facility future, can upgrade circuit in the system and equipment thereof easily, system's operation is conformed to actual conditions, and this is both convenient for users, also utilizes the maintenance of system simultaneously.
What the utility model was emphasized is the whole network optimization, rather than the optimization of some equipment or some points.It is high-pressure vacuum contactor that the switch of the utility model switching device is selected, for the 10kV switched capacitor, higher than vacuum circuit-breaker cost performance.Switching mode is voltage-type, and voltage-type does not need sample rate current, and volume is little, cost is low, and its compensation effect is much better than the power factor controlling type.But voltage-type can not the power ratio control factor, and discovery in service the benefit phenomenon occurred in the load valley period.For realistic problem, proposed to utilize the ripe at present network communications technology, strange land sampling, PC control mode.Be that two-way control is carried out in the voltage of switching device and the information of switching state and reactive power and the integration of power factor information of each transformer station's outlet head end of control room, utilize simultaneously fuzzy algorithmic approach selectively to carry out switching.Utilize digitizing technique, telecommunication technique and network technology have realized that the technology of idle work optimization, automation compensation and dispatching automation one is integrated.
Experimental example
Tong Jiang line and post and telecommunications line 10kV line build-out amount to 6 compensation points, and amounting to compensation capacity is 1850kvar, and a year saving electric weight amounts to about 52.36 ten thousand kilowatt hours, about 26.18 ten thousand yuan of year saving fund.Invest altogether 78.6 ten thousand yuan with device and line building-out unit, be recyclable gross investment 3 years more.
Claims (4)
1. a 10kV distribution head end operational factor remote gathering system is characterized in that comprising some with device Reactive Compensation Device and distribution line idle work optimization automation control system; Be installed in step down side and same the cutting of the same throwing of transformer with the device Reactive Compensation Device; Distribution line idle work optimization automation control system comprises several Reactive Compensation of Distribution Lines intelligent terminals (1), GPRS network transmission (2), the communication server (3), internet network (4), host computer (5).
2. according to 10kV distribution head end operational factor remote gathering system claimed in claim 1, it is characterized in that the reactive power compensation intelligent terminal comprises data transmission unit DTU, controller, fling-cut switch and compensation condenser.
3. according to 10kV distribution head end operational factor remote gathering system claimed in claim 2, it is characterized in that controller comprises input and processing module, be responsible for gathering voltage, current signal, indirectly try to achieve power factor value, and these signals are converted to the signal that single chip control module can receive;
Single chip control module adopts 16 high-speed microprocessors, and the compensation point parameter that gathers is analyzed and processed, be compensated the required initial data of decision-making, and send host computer to by the GPRS communication module, and accept the optimal control instruction of host computer, realize auto-compensation;
Communication module adopts the GPRS telecommunication, is responsible for setting up the communication port between single-chip microcomputer and host computer and other compensation arrangement.
4. according to 10kV distribution head end operational factor remote gathering system claimed in claim 1, it is characterized in that comprising voltage transformer, signal conversion circuit, low pass filter, A/D converter, the microprocessor of 16 bit, photoelectrical coupler, relay drive circuit, relay, contactor, compensation condenser group with the control circuit that the device Reactive Compensation Device comprises.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012205376648U CN202798005U (en) | 2012-10-20 | 2012-10-20 | 10kV distribution network head end operation parameter remote acquisition system |
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| CN2012205376648U CN202798005U (en) | 2012-10-20 | 2012-10-20 | 10kV distribution network head end operation parameter remote acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882217A (en) * | 2012-10-20 | 2013-01-16 | 吉林省电力有限公司通化供电公司 | 10-kV distribution net front end operation parameter long-distance collection system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102882217A (en) * | 2012-10-20 | 2013-01-16 | 吉林省电力有限公司通化供电公司 | 10-kV distribution net front end operation parameter long-distance collection system and control method |
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