CN205666623U - Ground county electric wire netting AVC control system - Google Patents
Ground county electric wire netting AVC control system Download PDFInfo
- Publication number
- CN205666623U CN205666623U CN201620164622.2U CN201620164622U CN205666623U CN 205666623 U CN205666623 U CN 205666623U CN 201620164622 U CN201620164622 U CN 201620164622U CN 205666623 U CN205666623 U CN 205666623U
- Authority
- CN
- China
- Prior art keywords
- avc
- county
- ground
- control system
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005457 optimization Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims description 3
- 238000012797 qualification Methods 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000004422 calculation algorithm Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004899 motility Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a ground county electric wire netting AVC control system, its characterized in that: control system transfer AVC application module and county to transfer AVC application module to constitute by ground, but the county transfer AVC, transfer the operation of AVC the whole network, but mutual independence operation again, the reliability and the flexibility that have improved the AVC system, and then realize carrying out the idle optimization of regional power grid from the angle of whole distract electric wire netting improve comprehensively, improve the grid voltage quality, optimize idle trend, reduce the net and decrease, improvement voltage qualification rate.
Description
Technical field
The present invention relates to Grid idle work optimization, particularly to a kind of ground county electrical network AVC control system.
Background technology
In recent years, AVC has obtained popularity in electrical network, coverage rate about 30%～40%.The popularization and application of AVC and electricity
The raising of the automatization level of network operation has close relationship.Dispatching automation SCADA/EMS system is at the above electrical network of districts and cities
Universal, being gradually improved of " four is distant " function, AVC is obtained whole network data information, and by the deep processing to information, is being expired
Foot power grid security, the reliable and condition of economical operation, it is achieved the whole network transformator parted hair and the automated closed-loop control of reactive-load compensation equipment
System.
At present, AVC system is at province and district utility grid preferable joint debugging control strategy, in Jiangsu, Anhui and Guangdong,
Achieve some successful experiences.But at present, county's electrical network is vertical coupled closely, county's network planning mould is relatively small feature, still
There is not a set of effective AVC system.Therefore need one badly to be taken into account by county's net, carry out nothing from area power grid the whole network angle
The AVC control system of merit Control of Voltage, it is achieved the voltage stabilization of area power grid and idle work optimization.
Utility model content
Technical problem to be solved in the utility model is to provide one county's electrical network AVC control system in a distributed manner, it is achieved
From ground, the angle of county's overall situation electrical network carry out regional power grid idle work optimization, improve rate of qualified voltage.
For reaching above-mentioned purpose, the technical solution of the utility model is, one county's electrical network AVC control system in a distributed manner,
It is characterized in that: described control system is adjusted AVC application module and county to adjust AVC application module to constitute by ground, county adjust AVC, adjust
AVC can run by the whole network, separate can run again, improves reliability and the motility of AVC system, and then realize area power grid
Voltage stabilization and idle work optimization.
Under described control system normal condition, that is under the whole network operational mode, ground utility grid AVC application module is the most right
Ground is adjusted and is had He Ge county of transformer station under its command and adjust and have transformer station under its command and carry out idle work optimization, and county adjusts AVC application module to be in off-line state, only reports
Alert module accepts the information of area AVC application and shows, is not involved in idle control；When the system failure or communication failure,
County adjust AVC application module with ground adjust AVC application module can off-the-line run, county adjust AVC, adjust AVC respectively to have under its command transformer station prison
Control and carry out Reactive power control.
The optimization object function of described control system is:
Min F=min{ λ1∑αiPi+λ2Σβj(Vj-VjS)2}
Wherein, α i is that active loss calculates the factor, and the overall situation is 1 when running, and will include optimization range in by this circuit；Off-the-line is transported
It is 0 during row, does not include optimization range in；Pi is circuit active loss；β i is that voltage calculates the factor；Vj is for measuring real-time voltage.λ1、
λ 2 is weight coefficient；
The value of VjS is:
In described optimization object function, equation is constrained to the power flow equation of system and calculates the number of putting of the factor:
Pi=Vi∑Vj(Gijcosθij+Bijsinθij)
Qi=Vi∑Vj(Gijcosθij-Bijsinθij)
Inequality constraints is:
Qij≥0
0≤γi≤γimax
τi≥τimin
Wherein α i and β i adjusts the value of AVC to be contrary in TiaoAVCHe county, ground.
One county's electrical network AVC control system in a distributed manner, owing to using above-mentioned structure, adjusts AVC with this invention ensures that
System and county adjust AVC system both can to run by the whole network, off-the-line can run again, improve reliability and the motility of AVC system.Thus
Realize the angle from whole distract electrical network and carry out regional power grid idle work optimization, improve comprehensively, improve grid voltage quality, optimize nothing
Merit trend, reduces network loss, improves rate of qualified voltage.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings；
Fig. 1 is this utility model one ground county electrical network AVC Control system architecture schematic diagram；
Fig. 2 is the control flow chart of this utility model a kind of ground county electrical network AVC control system.
Detailed description of the invention
As it is shown in figure 1, this utility model is adjusted by ground utility grid AVC application module and the county being deployed on county's tune server
AVC application module two parts form.Time properly functioning, ground tune AVC application tune the most over the ground has transformer station under its command and carries out idle work optimization,
Hai Jiangge county tune has transformer station under its command and includes voltage & var control scope in, carries out regional power grid from the angle of whole distract electrical network idle
Optimize, improve grid voltage quality comprehensively, reduce grid loss, improve stability and the safety of Operation of Electric Systems
Property.Now, county adjusts AVC application to be in off-line state, and only alarm module accepts the information of area AVC application and shows, is not involved in
In idle control.Under normal operation mode, Tiao Ge transformer station of county is processed by area power grid AVC application as Generic Substation,
Row joint debugging is transferred in province, it is achieved the whole province's reactive power optimization simultaneously as an area power grid.
When running into the special circumstances such as system failure, communication failure, area power grid AVC and county adjust AVC automatic parallel off fortune
OK, or manually off-the-line is run.Area power grid AVC is by linchpin transformer station of part or all of county off-the-line, automatic voltage adjusting module weight
Newly it is optimized calculating, and adjusts administrative transformer station to carry out idle control the most over the ground.AVC application during county adjusts server simultaneously is opened
With, and from becoming a set of independent AVC system, it is achieved to having supervisory control of substation under its command and carrying out Reactive power control.
Distributed area power grid AVC system has the feature of dynamic adjusting range.When the overall situation is run, from whole distract electrical network
Angle carry out regional power grid idle work optimization, improve grid voltage quality comprehensively.When off-the-line is run, each control area is transported
Row is separate, does not interfere with each other, improves the reliability of AVC system.
As shown in Figure 2, it is contemplated that ground adjusts AVC system and county to adjust AVC off-the-line to run, the optimization range of ground tune AVC system will
Can change, in optimization object function, introduce calculating the factor herein.When the overall situation is run, the meter of parameters optimization in object function
Calculating the factor is 1, participates in optimal control.When off-the-line is run, the parameters optimization corresponding off-the-line gone out calculates the factor and is set to 0, target
Function does not consider to be optimized it.This object function adjusts AVC system and county to adjust AVC system, the meter of the two with being simultaneously suitable for
Calculate the factor and take opposite number.Calculate the introducing of the factor, ground is adjusted AVC system and county adjust the Reactive Power Optimization Algorithm for Tower of AVC system to unify
Come, simplify computational algorithm, improve the scope of application of object function, before and after off-the-line optimum results will not deviation relatively big, cause point
The excessive action of joint, capacitor.
The scale simultaneously taking account of area power grid is relatively small, rate of qualified voltage examination is heavier, algorithm should not be excessively complicated,
Choosing loss minimization herein and voltage levvl is optimum as optimization aim, concrete optimization object function object function is as follows:
Min F=min{ λ1∑αiPi+λ2∑βj(Vj-VjS)2} (1)
Wherein, α i is that active loss calculates the factor, and the overall situation is 1 when running, and will include optimization range in by this circuit；Off-the-line is transported
It is 0 during row, does not include optimization range in.Pi is circuit active loss.β i is that voltage calculates the factor.Vj is for measuring real-time voltage.λ1、
λ 2 is weight coefficient.The value of VjS is as follows:
Equality constraint is the power flow equation of system and the number of putting calculating the factor:
Pi=Vi∑Vj(Gijcosθij+Bijsinθij)
Qi=Vi∑Vj(Gijcosθij-Bijsinθij)
It should be noted that in above formula, α i and β i adjusts the value of AVC to be contrary in TiaoAVCHe county, ground, because the control of the two
Scope processed is mutex relation.
Inequality constraints is:
Qij≥0
0≤γi≤γimax
τi≥τimin (4)
Above inequality constraints is expressed as node voltage amplitude constraint and the constraint of Line Flow.Three formulas are for saving public affairs
Taking charge of must not the constraint of the idle loopback of outlet to prefecture-level company.Four formulas, five formulas are to consider number of equipment action during idle control and move
Make the constraint of time interval.For Wuhu Region electric network composition, put aside the constraint of generator output.
Utilize the constraints that formula (3) and formula (4) provide, be iterated target function type (1) calculating, try to achieve F minimum
Voltage & var control scheme under Zhi, it is achieved the whole network idle work optimization that county's net is taken into account and Control of Voltage.Actual motion is tied
Fruit show for ground, county's electrical network this iterative computation time in the range of accepting because at present, the idle control of county's electrical network
Measure is load tap changer control and capacitor switching, and capacitor is accessed by 10kV bus mostly, and amount of calculation is the simplest
Single.
The control flow of county's electrical network AVC system is as shown in Figure 2 in a distributed manner.In second step, AVC system not only obtains entirely
Network data information, also needing the operational mode obtaining current county tune AVC system is that the overall situation is run or off-the-line is run, thus to calculating
The factor carries out putting number.This Reactive power control flow chart is adjusted with being simultaneously suitable for, county adjust AVC system, essential difference with acquisition
Data message different.
As a example by the electrical network AVC system of somewhere, after county in a distributed manner based on EMS electrical network AVC system operation with closed ring.Pass through
The on-the-spot application of some months, achieves good operational effect.After newly AVC system puts into operation, bus rate of qualified voltage was compared to last year
The same period, company of city busbar voltage qualification rate increase rate is little, and even 10kV busbar voltage qualification rate still has reduction.Reason is
Prefecture-level company itself has disposed AVC system, and rate of qualified voltage is in higher level.In AVC system, the access of county's net is to company of city
Major network Control of Voltage bring certain raising, but to distribution DeGrain.But the busbar voltage qualification rate for county's net carries
Rise substantially, the highest lifting nearly 5%, averagely improves 2.78%.
The new AVC system simultaneously including optimization range in greatly reduces the whole network line loss per unit, and line loss per unit is averagely by 3.86%
It is down to 3.7%.It is otherwise noted that the whole network line loss per unit fluctuates shallower after new AVC system puts into operation, also reflection makes new advances
AVC system reasonably distributes existing idle resource, and the economical operation for electrical network provides reliable technical support.
County in a distributed manner based on EMS electrical network AVC system is on the basis of ground county integral automation system, respectively on ground
Adjust, county adjusts and disposes AVC, and object function introduces the calculating factor so that this object function is simultaneously suitable for TiaoAVCHe county, ground and adjusts
AVC, simplifies computational algorithm, it is ensured that ground adjusts AVC system and county to adjust AVC system sectionalizing to run, and improves the reliable of AVC system
Property.Thus realize the angle from whole distract electrical network and carry out regional power grid idle work optimization, improve comprehensively, improve line voltage matter
Amount, Optimum Reactive Power Flow, reduces network loss, improves rate of qualified voltage.
AVC system has obtained good operational effect since putting into operation, optimize reactive power flow further, reduce network loss, slow
Solve the pressure of area power grid power factor regulation, greatly reduce the workload of management and running personnel.
Above in conjunction with accompanying drawing, this utility model is exemplarily described, it is clear that this utility model implements and is not subject to
The restriction of aforesaid way, as long as have employed the various improvement that technical solutions of the utility model are carried out, or the most improved direct application
In other occasion, all within protection domain of the present utility model.
Claims (1)
1. a Zhong Di county electrical network AVC control system, it is characterised in that: described control system includes ground utility grid AVC application mould
Block and the county being deployed on county's tune front server adjust AVC application module to simultaneously act on and have supervisory control of substation under its command and carry out idle
Optimal control；
Under described control system normal condition, ground utility grid AVC application module is adjusted the most over the ground and is had He Ge county of transformer station tune under its command
Having transformer station under its command and carry out idle work optimization, county adjusts AVC application module to be in off-line state, and only alarm module accepts area AVC application
Information and show, be not involved in idle control；When the system failure or communication failure, county adjusts AVC application module to solve
Row run, directly to having supervisory control of substation under its command and carrying out Reactive power control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620164622.2U CN205666623U (en) | 2016-03-03 | 2016-03-03 | Ground county electric wire netting AVC control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620164622.2U CN205666623U (en) | 2016-03-03 | 2016-03-03 | Ground county electric wire netting AVC control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666623U true CN205666623U (en) | 2016-10-26 |
Family
ID=57162450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620164622.2U Expired - Fee Related CN205666623U (en) | 2016-03-03 | 2016-03-03 | Ground county electric wire netting AVC control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633975A (en) * | 2016-03-03 | 2016-06-01 | 国网安徽省电力公司芜湖供电公司 | AVC control system for distributed county power grid |
-
2016
- 2016-03-03 CN CN201620164622.2U patent/CN205666623U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633975A (en) * | 2016-03-03 | 2016-06-01 | 国网安徽省电力公司芜湖供电公司 | AVC control system for distributed county power grid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11462908B2 (en) | Distributed grid node with intelligent battery backup | |
| US10784684B2 (en) | Total harmonic control | |
| Brearley et al. | A review on issues and approaches for microgrid protection | |
| JP2017521034A (en) | Power grid network gateway aggregation | |
| CN106712103B (en) | A kind of micro-capacitance sensor voltage stabilizing control system and control method | |
| Dragičević et al. | AC and DC microgrid control | |
| Callegari et al. | Voltage support and selective harmonic current compensation in advanced AC microgrids | |
| Hamoud et al. | Voltage sag and swell mitigation using D-STATCOM in renewable energy based distributed generation systems | |
| CN205666623U (en) | Ground county electric wire netting AVC control system | |
| CN105633975B (en) | A kind of county's power grid AVC control system in a distributed manner | |
| Marini et al. | Active power filter commitment for harmonic compensation in microgrids | |
| Arshad et al. | Multi-agent based distributed voltage regulation scheme with grid-tied inverters in active distribution networks | |
| Suresh et al. | Voltage sag compensation in multiline distribution system using closed loop controlled IDVR | |
| Elgamal et al. | An adaptive multiagent control system for autonomous economic operation and resilience assurance in a hybrid-energy islanded microgrid | |
| CN103513122A (en) | Power quality monitoring method and device | |
| Saaklayen et al. | Service restoration through coordinated operation of soft open points and distributed generation units in distribution networks | |
| Zhou et al. | Voltage Control Strategies for Active Distribution Networks with Multiple Distributed Energy Resources-A Survey | |
| Usman et al. | Power losses management in low voltage active distribution networks | |
| Chauhan et al. | Advancements in microgrid voltage control schemes | |
| Shukl et al. | EV charging concept based on common DC bus with multiple PV arrays | |
| Shukl et al. | Dual Mode Operation of PV-BES Based Microgrid with Seamless Transition Capability | |
| Caldognetto et al. | Experimental verification of an active microgrid with distributed power-based control | |
| Benhamida et al. | A Fuzzy Logic controller for reactive power and PQ bus voltage control | |
| Meliopoulos | Microgrid Deployment to Benefit DER Integration | |
| BR112017000119B1 (en) | METHOD FOR CONTROLING A POWER NETWORK, APPARATUS FOR CONTROLING A POWER NETWORK, ENERGY MEASUREMENT DEVICE, METHOD FOR CONTROLLING THE NETWORK, POWER NETWORK SYSTEM, METHOD FOR INTERFACING A POWER NETWORK, AND METHOD FOR MONITORING THE POWER IN A POWER NETWORK NODE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161026 Termination date: 20200303 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |