CN106887848B - Voltage power-less real-time control method based on Fuzzy Pattern Recognition - Google Patents
Voltage power-less real-time control method based on Fuzzy Pattern Recognition Download PDFInfo
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- CN106887848B CN106887848B CN201510945303.5A CN201510945303A CN106887848B CN 106887848 B CN106887848 B CN 106887848B CN 201510945303 A CN201510945303 A CN 201510945303A CN 106887848 B CN106887848 B CN 106887848B
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Feedback Control In General (AREA)
Abstract
The invention discloses a kind of voltage power-less real-time control method based on Fuzzy Pattern Recognition, by obtaining Operation of Electric Systems situation relevant to voltage control, establish characteristic index vector, and each sampling section progress power grid real-time load disturbance and grid operation mode are adjusted default, it determines fuzzy sample set, while carrying out voltage and reactive power optimization calculating；Starting identification process in real time, nearly judgement is selected by approach degree, the operation conditions of current electric system is integrated into immediate sample, and select the idle work optimization result of corresponding sample as regulating measures, so that optimal control measure more meets the currently practical operating status of power grid, to improve operation of power networks economy, have a good application prospect.
Description
Technical field
The present invention relates to operation of power networks analysis and dispatching technique systems, and in particular to a kind of electricity based on Fuzzy Pattern Recognition
Press idle real-time control method.
Background technique
In the power system, voltage be measure power quality an important indicator, brownout, it is excessively high all not only can shadow
The service life to electrical equipment and efficiency are rung, but also the stabilization and safe operation of electric system can be jeopardized.Reactive power equilibrium is
Guarantee the important means of voltage stabilization, voltage & var control improves quality of voltage and plan as a whole system resource configuration to network loss is reduced
Etc. there is important role.
Currently, comparative maturity, the optimization and control of real-time voltage power-less are main for the optimization analytical calculation of electric system
It is carried out by Energy Management System, RTU (remote-terminal unit) also is passed through from substation to the Real time data acquisition of power grid
Be acquired and on give the data of Energy Management System.But the voltage and reactive power optimization period of one side bulk power grid usually with
A few minutes or even one hour are that unit carries out periodic duty, and another aspect power grid itself is to be in dynamic at a load and power generation moment
The system of state balance, the state of power grid has occurred that relative to the section of global optimization during real-time voltage power-less controls
Offset.
For these reasons, it needs to design a kind of voltage powerless control method, the operation of power networks in dynamic equilibrium is supervised
Depending on control, reduce deviation of the power grid normal fluctuation to optimized operation state in practical control, so that the tune of voltage & var control
It is consistent with the adjustment trend that network optimization is run to save direction, so that the economy of operation of power networks is promoted, it is current to need to solve
Problem.
Summary of the invention
The purpose of the invention is to overcome the deficiencies in the prior art.It is of the invention based on the voltage of Fuzzy Pattern Recognition without
Function real-time control method, by Fuzzy Pattern Recognition, power grid normal fluctuation is to the inclined of optimized operation state in the practical control of reduction
From so that the adjusting direction of voltage & var control is consistent with the adjustment trend that network optimization is run, to promote operation of power networks
Economy has a good application prospect.
To achieve the above object, the technical scheme adopted by the invention is that:
A kind of voltage power-less real-time control method based on Fuzzy Pattern Recognition, it is characterised in that: include the following steps,
Step (A) obtains the running state information of power grid, from Energy Management System to participate in the power generation of voltage & var control
Machine set end voltage and PQ node it is idle processing be used as characteristic index vector, identification when to characteristic index vector use per unit value with
It standardizes, eliminates dimension impact, the opposite record for obtaining characteristic index vector belongs to vector R；
Step (B), samples power grid section every the time of fixed intervals in power grid real time execution, and to sampling
The power grid section of acquisition carries out network load disturbance and power grid mode adjusts default, composition operation of power networks situation sample, to each
A sample extracts the characteristic index vector of each sample, and determines the opposite record category degree vector E of samplen, wherein n=1,2 ..., N, N
For total sample number；
Step (C) calculates separately opposite record and belongs to vector R and the opposite record category degree vector E of each samplenLattice close-degree S (R,
En), according to the Similarity Principle in fuzzy diagnosis, opposite record is belonged into vector R and is integrated on the smallest sample of lattice close-degree,
In, opposite record belongs to vector R and the opposite record category degree vector E of each samplenLattice close-degree S (R, En) calculation formula be, such as formula
(1) shown in,
S(R,En)=(REn)∩(R×En)C (1)
Wherein, (R × En)CFor (REn) supplementary set, (REn) and (R × En)CIt is that opposite record belongs to vector R and each sample phase respectively
To record category degree vector EnInner product and apposition, ∩ be intersection symbol；
Opposite record category vector R is integrated into the smallest sample of lattice close-degree as the real-time of current electric grid by step (D)
Mode, and select the idle work optimization result of corresponding sample as regulating measures；
Step (E) carries out anti-error verification to selection voltage & var control regulating measures, and issues execution.
Voltage power-less real-time control method above-mentioned based on Fuzzy Pattern Recognition, it is characterised in that: step (E), to choosing
Voltage & var control regulating measures are selected to carry out issuing control by the remote control and remote regulating command service of Energy Management System.
The beneficial effects of the present invention are: the voltage power-less real-time control method of the invention based on Fuzzy Pattern Recognition, leads to
Cross and obtain relevant to voltage control Operation of Electric Systems situation, establish characteristic index vector, and to each sampling section into
The disturbance of row power grid real-time load and grid operation mode adjustment are default, determine fuzzy sample set, while carrying out voltage and reactive power optimization
It calculates；Starting identification process in real time, selects nearly judgement by approach degree, the operation conditions of current electric system is integrated into and is most connect
Close sample, and select the idle work optimization result of corresponding sample as regulating measures, so that optimal control measure more meets power grid
Currently practical operating status has a good application prospect to improve operation of power networks economy.
Detailed description of the invention
Fig. 1 is the flow chart of the voltage power-less real-time control method of the invention based on Fuzzy Pattern Recognition.
Specific embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figure 1, the voltage power-less real-time control method of the invention based on Fuzzy Pattern Recognition, including following step
Suddenly,
Step (A) obtains the running state information of power grid, from Energy Management System to participate in the power generation of voltage & var control
Machine set end voltage and PQ node it is idle processing be used as characteristic index vector, identification when to characteristic index vector use per unit value with
It standardizes, eliminates dimension impact, the opposite record for obtaining characteristic index vector belongs to vector R；
Step (B), samples power grid section every the time of fixed intervals in power grid real time execution, and to sampling
The power grid section of acquisition carries out network load disturbance and power grid mode adjusts default, composition operation of power networks situation sample, to each
A sample extracts the characteristic index vector of each sample, and determines the opposite record category degree vector E of samplen, wherein n=1,2 ..., N, N
For total sample number；
Step (C) calculates separately opposite record and belongs to vector R and the opposite record category degree vector E of each samplenLattice close-degree S (R,
En), according to the Similarity Principle in fuzzy diagnosis, opposite record is belonged into vector R and is integrated on the smallest sample of lattice close-degree,
In, opposite record belongs to vector R and the opposite record category degree vector E of each samplenLattice close-degree S (R, En) calculation formula be, such as formula
(1) shown in,
S(R,En)=(REn)∩(R×En)C (1)
Wherein, (R × En)CFor (REn) supplementary set, (REn) and (R × En)CIt is that opposite record belongs to vector R and each sample phase respectively
To record category degree vector EnInner product and apposition, ∩ be intersection symbol；
Opposite record category vector R is integrated into the smallest sample of lattice close-degree as the real-time of current electric grid by step (D)
Mode, and select the idle work optimization result of corresponding sample as regulating measures；
Step (E) carries out anti-error verification to selection voltage & var control regulating measures, if passing through by anti-error verification
The remote control of Energy Management System and remote regulating command service carry out issuing control；Otherwise, terminate this secondary control.
In conclusion the voltage power-less real-time control method of the invention based on Fuzzy Pattern Recognition, by obtaining and electricity
It is voltage-controlled to make relevant Operation of Electric Systems situation, characteristic index vector is established, and it is real-time to carry out power grid to each sampling section
Load disturbance and grid operation mode adjustment are default, determine fuzzy sample set, while carrying out voltage and reactive power optimization calculating；It opens in real time
Dynamic identification process, selects nearly judgement by approach degree, the operation conditions of current electric system is integrated into immediate sample, and
Select the idle work optimization result of corresponding sample as regulating measures, so that optimal control measure more meets the currently practical operation of power grid
State has a good application prospect to improve operation of power networks economy.
Basic principles and main features and advantage of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (2)
1. the voltage power-less real-time control method based on Fuzzy Pattern Recognition, it is characterised in that: include the following steps,
Step (A) obtains the running state information of power grid, from Energy Management System to participate in the generator machine of voltage & var control
It holds voltage and the idle processing of PQ node to be used as characteristic index vector, per unit value is used to carry out to characteristic index vector in identification
Dimension impact is eliminated in normalization, and the opposite record for obtaining characteristic index vector belongs to vector R；
Step (B), samples power grid section every the time of fixed intervals in power grid real time execution, and obtains to sampling
Power grid section carry out network load disturbance and power grid mode adjust it is default, constitute operation of power networks situation sample, to each sample
This, extracts the characteristic index vector of each sample, and determines the opposite record category degree vector E of samplen, wherein n=1,2 ..., N, N are sample
This sum；
Step (C) calculates separately opposite record and belongs to vector R and the opposite record category degree vector E of each samplenLattice close-degree S (R, En), root
According to the Similarity Principle in fuzzy diagnosis, opposite record is belonged into vector R and is integrated on the smallest sample of lattice close-degree, wherein phase
Vector R and the opposite record category degree vector E of each sample are belonged to recordnLattice close-degree S (R, En) calculation formula be, such as formula (1) institute
Show,
S(R,En)=(R En)∩(R×En)C (1)
Wherein, (R × En)CFor (REn) supplementary set, (REn) and (R × En)CIt is that opposite record belongs to vector R and each sample phase respectively
To record category degree vector EnInner product and apposition, ∩ be intersection symbol；
Opposite record category vector R is integrated into the smallest sample of lattice close-degree as the real-time mould of current electric grid by step (D)
Formula, and select the idle work optimization result of corresponding sample as regulating measures；
Step (E) carries out anti-error verification to selection voltage & var control regulating measures, and issues execution.
2. the voltage power-less real-time control method based on Fuzzy Pattern Recognition according to claim 1, it is characterised in that: step
(E), selection voltage & var control regulating measures are carried out issuing control by the remote control and remote regulating command service of Energy Management System
System.
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| CN107798463A (en) * | 2017-09-19 | 2018-03-13 | 国网辽宁省电力有限公司电力科学研究院 | A kind of method that power network mountain fire risk class based on fuzzy diagnosis is assessed |
| CN113098021B (en) * | 2021-04-20 | 2022-11-18 | 山东科技职业学院 | Automatic voltage control method for power system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025159A (en) * | 2010-12-22 | 2011-04-20 | 山东电力集团公司滨州供电公司 | Comprehensive evaluation method and system of stability of quiescent voltage |
| CN102255320A (en) * | 2011-07-15 | 2011-11-23 | 广东电网公司电力科学研究院 | Voltage reactive real-time control system of regional power grid and enclosed loop control method thereof |
| CN104538970A (en) * | 2015-01-08 | 2015-04-22 | 国网上海市电力公司 | Control method for voltage and reactive power control system |
| CN104600695A (en) * | 2014-12-29 | 2015-05-06 | 国家电网公司 | Trend load flow calculating method based on online status estimation and real-time scheduling plans |
-
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- 2015-12-16 CN CN201510945303.5A patent/CN106887848B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025159A (en) * | 2010-12-22 | 2011-04-20 | 山东电力集团公司滨州供电公司 | Comprehensive evaluation method and system of stability of quiescent voltage |
| CN102255320A (en) * | 2011-07-15 | 2011-11-23 | 广东电网公司电力科学研究院 | Voltage reactive real-time control system of regional power grid and enclosed loop control method thereof |
| CN104600695A (en) * | 2014-12-29 | 2015-05-06 | 国家电网公司 | Trend load flow calculating method based on online status estimation and real-time scheduling plans |
| CN104538970A (en) * | 2015-01-08 | 2015-04-22 | 国网上海市电力公司 | Control method for voltage and reactive power control system |
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