CN107453368A - Distributed intelligence feeder voltage control system - Google Patents
Distributed intelligence feeder voltage control system Download PDFInfo
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- CN107453368A CN107453368A CN201710798188.2A CN201710798188A CN107453368A CN 107453368 A CN107453368 A CN 107453368A CN 201710798188 A CN201710798188 A CN 201710798188A CN 107453368 A CN107453368 A CN 107453368A
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- Prior art keywords
- voltage
- feeder
- control
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
A kind of distributed intelligence feeder voltage control system of the present invention, including：Feeder voltage adjustment module：User sets the predetermined value of feeder line regulation voltage by the software systems in high in the clouds, and closed-loop control is carried out to voltage；Sensor measurement module：Taken at regular intervals external data, help user's automatic detection and show the Voltage of whole feeder line, and the distributed subsystem running situation being made up of network distribution transformer and live feeder line regulator；Wireless communication module：Local data in time or is supplied to terminal user, user checks control effect and local data at any time by the software systems in high in the clouds by the system on demand as free terminal information acquisition equipment.The present invention can solve the problem that feeder voltage along feeder line gradually reduce and dynamic load caused by Voltage Drop, user's request can also be coordinated, when needing most, the place that needs most, the regulation and control to any node are flexibly independently opened or closed, so as to realize voltage and reactive power optimization, peak value control.
Description
Technical field
The present invention relates to a kind of feeder voltage control system, and system is controlled more particularly to a kind of distributed intelligence feeder voltage
System.
Background technology
10 kilovolts of System Reactive Power compensation equipment of high pressure, which are typically mounted in transformer station, uses centralized compensation regulative mode, but high
10 kilovolts of feeder line branch roads of pressure are scattered and longer, cause line end control effect poor.It is commonly used with nonlinear load, point
The access of the cloth energy, and the factor such as lack of uniformity of user load, cause the actual instantaneous reactive of network system to be in all the time
In high frequency change, global optimization can not be realized, causes the overall quality of power supply to decline.
To solve the problems, such as the utility power quality control in intelligent distribution network, many raising power grid qualities are also developed both at home and abroad
Equipment, such as advanced Voltage-Reactive Power optimization (VVO), energy-conservation decompression (CVR) plan, peak demand management, using distributed intelligence
Micro-capacitance sensor and intelligent distribution network.But these new technologies and distributed power grid are all to be with extensive network data acquisition and monitoring
Premised on the hardware facilities such as system, communication and server.Other intelligent distribution network is needed to distribution cable (feeder line), distribution transformer
Device, local transformer station etc. carries out on-line real time monitoring.It is all these to be required for substantial amounts of renewal of the equipment, software system integration.From
Electric power is transported and distributed for angle, and install sensor and some digital devices are also needed in transmission line of electricity, is used in user terminal
Family also needs to installation intelligence instrument, intelligent electric meter carrys out real-time tracing electricity consumption situation, all these to be required for huge disposable throwing
Money.
Automatic Regulation AVC（automatic voltage control）In terms of system is current domestic voltage and reactive power optimization
Compare new technology.Conventional VQC in the market（Voltage Quality Control）Voltage powerless control system is basic
The upper area field figures of Shi Yi nine and its derivative state carry out the voltage powerless control system of single plant stand.Nine-zone diagram is substantially a kind of information
Isolated island controls, it is impossible to realizes the whole network reactive voltage optimum control.
Centralized AVC systems：The switching control instruction for being calculated central control system using centralized control system, is borrowed
Auxiliary dispatch automated system, carry out on-line control ULTC shunting switch by telecommunication system and other switchings are set
It is standby.The program is unable to real-time online regulation.
Distributed AVC systems：Distributed AVC systems use by the real time data such as remote measurement, remote signalling carry out on-line analysis and
Calculate, be achieved in the complicated distributed hierarchical optimal control problem for being layered, being classified, it relies on accurate mathematical modeling, excellent
It is big to change operand.With the expansion of distributed system, the system complexity and operand developed can be in that geometry level increases.Represent
The Chinese invention patent of property is such as：Patent No. 200610044008（Entitled " distribution-type real-time voltage power-less optimal control side
Method "）The upper and lower computer that is formed using SCADA system of Chinese invention patent be controlled, but system is dependent on advanced wireless
Communication system, it is impossible to carry out on-line control in real time.Patent No. 200920224190（Entitled " distributed on-Line Voltage
Powerless control system "）Chinese invention patent using Ethernet and telecommunication system come realize line closed loop optimize system, but
Equally it is a kind of model cootrol based on communication system, system deployment cost is high, is not suitable for the weak area of communication system.Patent
Number be 201510021036.2（Entitled " power-less compensation control method of distributed reactive power compensation system "）Chinese invention it is special
Profit carries out reactive-load compensation using principal and subordinate's module based on bus connection.Network is compensated by dynamic construction, the system can improve
The reliability of system.But communication system is substantially still relied on, the communication system for treating operating area has minimum requirements.
Portable V VC devices：Patent No. 201310650588.0（It is entitled that " Portable reactive voltage local compensation fills
Put "）Chinese invention patent propose a kind of Portable reactive voltage adjusting means, can to power system reactive power carry out on the spot
Compensation.But the device is a kind of passive type solution, used auto-transformer can not be realized to the accurate of feeder voltage
Control, it is suitable for the coarse adjustment of remote districts, without versatility and general applicability.
It is being fully understood by the transformation of domestic and international intelligent grid, the research and analysis advanced technology of various intelligent grids and is being applicable
Scope, with reference to the country of China power network, the actual conditions of especially vast rural power grids and outlying district power network, just generate this hair
Bright this has the intelligent independent type power network feeder voltage idle work optimization equipment that cost is low, practical（Autonomous
Feeder Voltage and VAR Optimizer (AFVVO)。
The content of the invention
The technical problems to be solved by the invention are to provide a kind of distributed intelligence feeder voltage control system, and it can be solved
Certainly feeder voltage along feeder line gradually reduce and dynamic load caused by Voltage Drop, user's request can also be coordinated, most needed
When wanting, the place that needs most flexibly independently opens or closes the regulation and control to any node, so as to realize that voltage power-less is excellent
Change, peak value control.
The present invention is that solve above-mentioned technical problem by following technical proposals：A kind of distributed intelligence feeder voltage control
System processed, it is characterised in that it includes：Feeder voltage adjustment module：User sets feeder line by the software systems in high in the clouds and adjusted
The predetermined value of voltage, each distributed adjusting means by the local feeder voltage collected compared with user's setting value, it is right
Voltage carries out closed-loop control；
Sensor measurement module：Taken at regular intervals external data, help user's automatic detection and show the voltage operation of whole feeder line
Situation, and the running situation for the distributed subsystem being made up of network distribution transformer and live feeder line regulator；
Wireless communication module：Local data in time or is supplied to by the system on demand as free terminal information acquisition equipment
Terminal user, user check control effect and local data at any time by the software systems in high in the clouds；
Communication interface module：Local data is uploaded to control module at any time；
Self-stabilization control module：Core control algolithm is run, as the subsystem module of whole control system, inside is embedded with from steady
Determine controller, so as to realize that the distributed self-stabilization of whole system controls, the switching of subsystems is independently adjusted, so as to real
Existing global and local optimum.
Preferably, the feeder voltage adjustment module configures on demand along feeder line decentralized configuration, and in multi-load area, so as to
Distribution network users terminal voltage is set to keep stable.
Preferably, self-stabilization controller is embedded with inside the feeder voltage adjustment module, so as to realize point of whole system
Cloth self-stabilization controls.
Preferably, the sensor measurement module detects oscillation, and feeder voltage adjustment module will be delayed and export control
Signal processed, so as to suppress to shake.
Preferably, the core control algolithm is self-stabilization control algolithm, can independently adjust cutting for subsystems
Change, so as to realize global and local optimum.
Preferably, the self-stabilization control module uses the WEB of multi-agent Technology framework, more data and multi-way contral
Issue work station.
The positive effect of the present invention is：
（1）Distributed Voltage adjustment equipment and supporting software systems provide solution feeder voltage and gradually reduce and move along feeder line
A kind of Distributed-solution of the caused Voltage Drop of state load.Distributed voltage adjusting device can match somebody with somebody along feeder line distribution
Put, and configured on demand in multi-load area, so that distribution network users terminal voltage keeps stable.Provisioned control device is by profit
With existing distribution net equipment, installed in the secondary side of network distribution transformer, extra power-supply device and installing space are not required to.
（2）The instruction of telecommunication system is not required to, by the self-stabilization control system of independent research, can independently be adjusted
Feeder voltage and reactive-load compensation, and the combination of global optimum and local optimum can be realized.
（3）, can be as free terminal information acquisition equipment equipped with the wireless telecommunications system carried.
（4）Equipped with various communications protocol and communication interface, can be readily integrated into existing idle
In compensation system.
（5）, can be with distributed deployment and mobile installation using distributed portable set.
（6）The present invention is a kind of Modular control system, and dilatation or volume reduction can be needed according to scene.
（7）The present invention will be connected on network distribution transformer secondary side, equipped with an alternating-current switch, can disconnect and feedline circuit
Connection.With fail safe（fail-safe）So as to reach the purpose of failure barrier insurance.
（8）Homeostatic Control (self-stabilization control) of the present invention are that a kind of large scale system passes through self-coordinating
And realize the Adaptable System of whole machine balancing.Complicated and time-consuming on line optimization system is not required to, the cost performance of product is higher.
（9）The present invention can have complementary advantages with existing centralized SVC and SVG, using fraction scheme, reach to distribution
The dynamic control of voltage.
Brief description of the drawings
Fig. 1 is scheme of installation of the present invention in distribution network systems；
Fig. 2 is the wireless telecommunications schematic diagram of the present invention；
Fig. 3 is the core control system module map of the present invention；
Fig. 4 is the feeder voltage control system figure of the present invention；
Fig. 5 is the self-stabilization Quality Control response curve of the present invention；
Fig. 6 is the step response simulation result figure of the feeder voltage of the present invention.
ZigBee technology is the wireless communication technology of a kind of short distance, low-power consumption in Fig. 2, and also known as purple honeybee communicates；
WEB is the meaning of cobweb and net.
Embodiment
Present pre-ferred embodiments are provided below in conjunction with the accompanying drawings, to describe technical scheme in detail.
As shown in Figures 1 to 5, distributed intelligence feeder voltage control system of the present invention includes：
Feeder voltage adjustment module：User sets the predetermined value of feeder line regulation voltage, each distribution by the software systems in high in the clouds
Adjusting means will carry out closed-loop control the local feeder voltage collected compared with user's setting value to voltage, can be with
Feeder voltage is carried out nearby to control and adjust in real time；Feeder voltage adjustment module can be along feeder line decentralized configuration, and more
Load region configures on demand, so that distribution network users terminal voltage keeps stable.It is embedded with inside feeder voltage adjustment module from steady
Controller is determined, so as to realize that the distributed self-stabilization of whole system controls.
Sensor measurement module：Taken at regular intervals external data, user's automatic detection can be helped and show whole feeder line
Voltage, and the running situation for the distributed subsystem being made up of network distribution transformer and live feeder line regulator；Pass
Sensor measurement module detects oscillation, and feeder voltage adjustment module will be delayed output control signal, so as to suppress to shake.
Wireless communication module：The system is as free terminal information acquisition equipment, in time or on demand by local data（Feedback
Line temperature, feeder voltage, feeder current etc.）Terminal user is supplied to, user checks control at any time by the software systems in high in the clouds
Effect and local data；
Communication interface module：Local data is uploaded to control module at any time；
Self-stabilization control module：Core control algolithm is run, as the subsystem module of whole control system, inside is embedded with from steady
Determine controller, so as to realize that the distributed self-stabilization of whole system controls, the switching of subsystems is independently adjusted, so as to real
Existing global and local optimum.Core control algolithm can be self-stabilization control algolithm, can independently adjust subsystems
Switching, so as to realize global and local optimum.
Self-stabilization control module issues work station using the WEB of multi-agent Technology framework, more data and multi-way contral.
As shown in fig. 6, feeder voltage adjustment module uses following voltage adjusting method, the voltage adjusting method includes following
Step：
Step 1, first according to equation（1）And equation（2）Carry out the control of integral element.It is as follows：
……（1）
……（2）
Wherein Kp, Ki are PID adjustment parameters,It is measurement voltage,It is setting voltage.It is both
Between error amount,It is control voltage.
Step 2, calculated according to self-stabilization nonlinear curve figure；
Step 3, design self-stabilization control algolithm use such as following formula（3）：
……（3）
Represent output voltage,Last time measurement voltage is represented,Represent time delay,
E represents math constant, is exactly the truth of a matter of natural logrithm, is approximately equal to 2.718281828, t and represents current time, t0Generation
Sampling time table last time.
Step 4, voltage setting value are far longer than measurement magnitude of voltage, and quick point control will preferentially cut multiple submodules
Block：Within limits, self-stabilization control module can be calculated according to designed control for voltage setting value and actual measurement voltage
Submodule block system is smoothly cut or cut out to method.
The self-stabilization control module independently adjusts local feeder voltage and reactive-load compensation, and realizes global optimum and office
The optimal combination in portion.
In summary, the present invention can solve the problem that feeder voltage along feeder line gradually reduce and dynamic load caused by voltage fall
Fall, the present invention can coordinate user's request, when needing most（Peak times of power consumption）, the place that needs most（Regenerative resource frequency
Numerous grid-connected region）, flexibly independently（It is not required to software kit and carries out remote control）The regulation and control to any node are opened or closed,
So as to the work such as voltage and reactive power optimization, peak value control, the control based on user's request, new energy be integrated that helps grid company to realize
Make.The present invention need not run the optimized algorithm of complexity, and the voltage that subsystems need to be only set from high in the clouds software systems makes a reservation for
Value, the control system can independently adjust feeder voltage to setting value.The present invention can not only be used for a single system and solve
Scheme, also it can realize have complementary advantages with other existing voltage and reactive power optimization solution integrations.The present invention is not dependent on telecommunication
The instruction of system carrys out work, but by the self-stabilization control system of independent research, independently adjust local feeder voltage and nothing
Work(compensates, and can realize the combination of global optimum and local optimum.
Particular embodiments described above, technical problem, technical scheme and the beneficial effect of the solution to the present invention are carried out
It is further described, should be understood that the specific embodiment that the foregoing is only of the invention, be not limited to
The present invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., it should be included in this
Within the protection domain of invention.
Claims (6)
- A kind of 1. distributed intelligence feeder voltage control system, it is characterised in that：It includes：Feeder voltage adjustment module：User sets the predetermined value of feeder line regulation voltage, each distribution by the software systems in high in the clouds The local feeder voltage collected compared with user's setting value, closed-loop control will be carried out to voltage by adjusting means；Sensor measurement module：Taken at regular intervals external data, help user's automatic detection and show the voltage operation of whole feeder line Situation, and the running situation for the distributed subsystem being made up of network distribution transformer and live feeder line regulator；Wireless communication module：Local data in time or is supplied to by the system on demand as free terminal information acquisition equipment Terminal user, user check control effect and local data at any time by the software systems in high in the clouds；Communication interface module：Local data is uploaded to control module at any time；Self-stabilization control module：Core control algolithm is run, as the subsystem module of whole control system, inside is embedded with from steady Determine controller, so as to realize that the distributed self-stabilization of whole system controls, the switching of subsystems is independently adjusted, so as to real Existing global and local optimum.
- 2. distributed intelligence feeder voltage control system as claimed in claim 1, it is characterised in that the feeder voltage regulation Module configures on demand along feeder line decentralized configuration, and in multi-load area, so that distribution network users terminal voltage keeps stable.
- 3. distributed intelligence feeder voltage control system as claimed in claim 1, it is characterised in that the feeder voltage regulation Inside modules are embedded with self-stabilization controller, so as to realize that the distributed self-stabilization of whole system controls.
- 4. distributed intelligence feeder voltage control system as claimed in claim 1, it is characterised in that the sensor measures mould Block detects oscillation, and feeder voltage adjustment module will be delayed output control signal, so as to suppress to shake.
- 5. distributed intelligence feeder voltage control system as claimed in claim 1, it is characterised in that the core control algolithm It is self-stabilization control algolithm, can independently adjusts the switching of subsystems, so as to realizes global and local optimum.
- 6. distributed intelligence feeder voltage control system as claimed in claim 1, it is characterised in that the self-stabilization controls mould Block issues work station using the WEB of multi-agent Technology framework, more data and multi-way contral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710798188.2A CN107453368A (en) | 2017-09-07 | 2017-09-07 | Distributed intelligence feeder voltage control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710798188.2A CN107453368A (en) | 2017-09-07 | 2017-09-07 | Distributed intelligence feeder voltage control system |
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| CN107453368A true CN107453368A (en) | 2017-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112134290A (en) * | 2020-08-06 | 2020-12-25 | 国电南瑞科技股份有限公司 | Active peak clipping and loss reduction method based on voltage control |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904662A (en) * | 2014-04-15 | 2014-07-02 | 国网山东乐陵市供电公司 | Reactive power compensation system of electric power circuit |
| CN105048480A (en) * | 2015-08-20 | 2015-11-11 | 广州电力设计院 | Dynamic reactive power compensation device |
| CN107086578A (en) * | 2017-05-22 | 2017-08-22 | 国网浙江省电力公司宁波供电公司 | A kind of region voltage layered distribution type cooperative control system of photovoltaic power distribution network |
| CN207459729U (en) * | 2017-09-07 | 2018-06-05 | 周万坤 | Distributed intelligence feeder voltage control system |
-
2017
- 2017-09-07 CN CN201710798188.2A patent/CN107453368A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904662A (en) * | 2014-04-15 | 2014-07-02 | 国网山东乐陵市供电公司 | Reactive power compensation system of electric power circuit |
| CN105048480A (en) * | 2015-08-20 | 2015-11-11 | 广州电力设计院 | Dynamic reactive power compensation device |
| CN107086578A (en) * | 2017-05-22 | 2017-08-22 | 国网浙江省电力公司宁波供电公司 | A kind of region voltage layered distribution type cooperative control system of photovoltaic power distribution network |
| CN207459729U (en) * | 2017-09-07 | 2018-06-05 | 周万坤 | Distributed intelligence feeder voltage control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112134290A (en) * | 2020-08-06 | 2020-12-25 | 国电南瑞科技股份有限公司 | Active peak clipping and loss reduction method based on voltage control |
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