CN106356857A - Unified power flow controller site-selecting method based on load variation rate index - Google Patents
Unified power flow controller site-selecting method based on load variation rate index Download PDFInfo
- Publication number
- CN106356857A CN106356857A CN201610836413.2A CN201610836413A CN106356857A CN 106356857 A CN106356857 A CN 106356857A CN 201610836413 A CN201610836413 A CN 201610836413A CN 106356857 A CN106356857 A CN 106356857A
- Authority
- CN
- China
- Prior art keywords
- sigma
- lambda
- branch road
- load
- calculating
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000004364 calculation method Methods 0.000 claims abstract description 9
- 230000003044 adaptive effect Effects 0.000 claims description 15
- 238000000205 computational method Methods 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 13
- 238000010606 normalization Methods 0.000 claims description 7
- 230000009466 transformation Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Economics (AREA)
- Human Resources & Organizations (AREA)
- Strategic Management (AREA)
- Physics & Mathematics (AREA)
- General Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Marketing (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Tourism & Hospitality (AREA)
- Quality & Reliability (AREA)
- Development Economics (AREA)
- Game Theory and Decision Science (AREA)
- Operations Research (AREA)
- Power Engineering (AREA)
- Entrepreneurship & Innovation (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a unified power flow controller site-selecting method based on load variation rate index, comprising the steps of calculating grid base power flow according to grid generation, load, frame structure and operation mode data; counting load rate of each branch, and normalizing and calculating the load rates; calculating grid power flow after each branch experiences N-1 faults; counting load rate of each branch, and normalizing and calculating the load rates; calculating a line construction difficulty level coefficient for an area where a line locates; calculating a site selection adaptability index for each branch; ranking the site selection adaptability indexes of the branches, and using the front ones of the branches with maximum index value as recommended mounting branches. The site selection adaptability comprehensive index is acquired by using grid initial power flow and line N-1 mode power flow in connection with the line construction difficulty level for the area where the line locates, a recommended mounting site for UPFC is determined according to the magnitude of the index value, and the method has the advantages that the calculation is simple and calculation speed is high.
Description
Technical field
The present invention relates to a kind of THE UPFC site selecting method and in particular to a kind of based on loading rate index
THE UPFC site selecting method, belongs to flexible AC transmission technical field.
Background technology
THE UPFC (upfc) as one kind of facts, can adjusting circuit trend effectively, control node electricity
Pressure, improves power system safety and stability and runs.Therefore, the site position of THE UPFC, great to effect on power system.
At present, classify according to Optimization Method for Location-Selection, the optimization method of upfc installation site can be roughly divided into: expertise
Method, priority are sent out and mathematical methods;Wherein Lie group etc. (Lie group, Liu Jiankun, Wei Zhinong, Zang Haixiang, Chen Jing, Zhang Ningyu. base
Upfc addressing and capacity multiple target collocation method [p] in nsga-) a kind of upfc choosing based on nsga- of disclosure of the invention
Location and capacity multiple target collocation method;Zhao Yuan etc. (Zhao Yuan, Yang Xiaosong, thanks out to the sensitive analysis to electric network reliability for your .upfc
And distribute [j] rationally. Automation of Electric Systems .2012,36 (1): 55-60.) using THE UPFC (upfc) power
Injection model, the method determining upfc optimum installation site according to sensitivity ranking results;Old wait (Chen Jing, Zhang Ningyu, An Hai quietly
Cloud etc.) a kind of method of THE UPFC addressing of disclosure of the invention, negative using the initial Load flow calculation of electrical network each bar circuit
Load rate, and load factor normalization is calculated the weight coefficient as each branch road, more each bar is calculated based on branch breaking distribution factor
The addressing adaptive criteria of branch road, the size sequence finally according to index value determines that the recommendation of THE UPFC is installed
Point.
The most theoretical property of current site selecting method is stronger, and practical application is poor, or only considers power network topology, does not examine
Consider actual power grid construction condition.
Content of the invention
In view of the shortcomings of the prior art, it is an object of the present invention to provide a kind of unification based on loading rate index is damp
Stream controller site selecting method, using the trend of the initial trend of electrical network and circuit n-1 mode, meanwhile, the on-site line of combined circuit
Degree-of-difficulty factor is built on road, obtains addressing adaptability aggregative indicator, the size further according to index value determines THE UPFC
Recommendation infield, there is the advantages such as computational methods are simple, calculating speed is fast.
To achieve these goals, the present invention is to realize by the following technical solutions:
A kind of THE UPFC site selecting method based on loading rate index of the present invention, including following step
Rapid:
(1) according to grid generation, load, grid structure, running mode data, the existing flow calculation program of application calculates
Electrical network basis trend;
(2) according to step (1) result of calculation, count the load factor of each bar branch road, and load factor is normalized calculating;
(3) on the basis of step (1), after the existing flow calculation program of application calculates each bar branch road generation n-1 fault
The trend of electrical network;
(4) according to step (3) result of calculation, count the load factor of each bar branch road, and load factor is normalized calculating;
(5) calculate circuit location line construction complexity coefficient;
(6) calculate the addressing adaptive criteria of each bar circuit;
(7) the addressing adaptive criteria of each branch road is ranked up, the maximum front several branch roads of index value are unified tide
Branch road is installed in the recommendation of stream controller.
In step (2), for branch road i, its load factor is ai, and the initial load rate coefficient after normalization calculates is α i;Its
In, the computational methods of α i are:
Wherein, a is the set of all branch roads in electrical network,
Therefore, it can obtain an initial load rate α matrix, specific as follows:
In step (4), after disconnecting for branch road k, the load factor of remaining branch road i is bi-k, the load after normalization calculating
Rate coefficient is βi-k;Wherein, βi-kComputational methods be:
Wherein, if i=k, βi-i=0;
Therefore, it can the load factor β matrix after obtaining a n-1, specific as follows:
In step (5), the computational methods of circuit i location line construction complexity coefficient lambda are:
λi=∑ ldl/∑l
In formula, ldlFor the total length of this area's cable run, l is all total line lengths in this area.
In step (6), the computational methods of the addressing adaptive criteria of each bar circuit are:
1. setting γ is the unit matrix of n × 1 rank, that is,
2. according to below equation, obtain loading transformation matrices η
3. calculate the addressing adaptive coefficient matrix χ of circuit i
In formula, m is the transformer station's number between two branch roads.
In step (6), for branch road i, its addressing adaptive criteria ω is:
ω=diag (χ abs (η)).
The beneficial effect that the present invention is reached:
The method according to the invention can utilize the initial trend of electrical network, circuit n-1 trend, network topology structure parameter, with
When combined circuit location line construction complexity coefficient, obtain addressing adaptability aggregative indicator, big according to index
Little can Effective selection go out upfc recommendation install branch road.The addressing adaptability aggregative indicator major embodiment of present invention upfc is excellent
First consider to be installed on larger to electric network influencing, and this area's conventional line builds the thought in difficulty area higher.Only by quiet
The Load flow calculation of state mode can get the recommendation infield of upfc, has the advantages such as computational methods are simple, calculating speed is fast,
The feasibility study of actual electric network can be applied to for facts device and Preliminary design provides reference.
Specific embodiment
Technological means, creation characteristic, reached purpose and effect for making the present invention realize are easy to understand, with reference to
Specific embodiment, is expanded on further the present invention.
(1) according to grid generation, load, grid structure, running mode data, application flow calculation program calculates electrical network base
Plinth trend;
(2) according to step (1) result of calculation, count the load factor of each bar branch road, and load factor is normalized calculating;
(3) on the basis of step (1), electrical network after application flow calculation program calculating each bar branch road generation n-1 fault
Trend;
(4) on the basis of step (3), count the load factor of each bar branch road, and load factor is normalized calculating;
(5) calculate circuit location line construction complexity coefficient;
(6) calculate the addressing adaptive criteria of each bar circuit;
(7) the addressing adaptive criteria of each branch road is ranked up, the maximum front several branch roads of index value are unified tide
Branch road is installed in the recommendation of stream controller.
For branch road i in step (2), its load factor is ai, and the initial load rate coefficient after normalization calculates is α i;Its
In, the computational methods of α i are:
Wherein, a is the set of all branch roads in electrical network.
Therefore, it can obtain an initial load rate α matrix, specific as follows:
In step (4), after disconnecting for branch road k, the load factor of remaining branch road i is bi-k, the load after normalization calculating
Rate coefficient is βi-k;Wherein, βi-kComputational methods be:
Wherein, if i=k, βi-i=0.
Therefore, it can the load factor β matrix after obtaining a n-1, specific as follows:
Circuit i location line construction difficulty or ease coefficient lambda in step (5), computational methods are
λi=∑ ldl/∑l
In formula, ldlFor the total length of this area's cable run, l is all total line lengths in this area.
Step (6) addressing adaptability aggregative indicator computational methods are
1. setting γ is the unit matrix of n × 1 rank, that is,
2. according to below equation, obtain loading rate matrix η
3. calculate the addressing adaptive coefficient matrix χ of circuit i
In formula, m is the transformer station's number between two branch roads
For branch road i, its addressing adaptive criteria ω is:
ω=diag (χ abs (η))
Ultimate principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement both falls within scope of the claimed invention.Claimed scope by appending claims and its
Equivalent thereof.
Claims (6)
1. a kind of THE UPFC site selecting method based on loading rate index is it is characterised in that include following
Step:
(1) according to grid generation, load, grid structure, running mode data, calculate electrical network basis trend;
(2) according to step (1) result of calculation, count the load factor of each bar branch road, and load factor is normalized calculating;
(3) on the basis of step (1), calculate the trend that each bar branch road occurs electrical network after n-1 fault;
(4) according to step (3) result of calculation, count the load factor of each bar branch road, and load factor is normalized calculating;
(5) calculate circuit location line construction complexity coefficient;
(6) calculate the addressing adaptive criteria of each bar circuit;
(7) the addressing adaptive criteria of each branch road is ranked up, the maximum front several branch roads of index value are Unified Power Flow control
Branch road is installed in the recommendation of device processed.
2. the THE UPFC site selecting method based on loading rate index according to claim 1, its feature exists
In in step (2), for branch road i, its load factor is ai, and the initial load rate coefficient after normalization calculates is α i;Wherein, α i
Computational methods be:
Wherein, a is the set of all branch roads in electrical network,
Therefore, it can obtain an initial load rate α matrix, specific as follows:
3. the THE UPFC site selecting method based on loading rate index according to claim 2, its feature exists
In, in step (4), after disconnecting for branch road k, the load factor of remaining branch road i is bi-k, the load rate coefficient after normalization calculating
For βi-k;Wherein, βi-kComputational methods be:
Wherein, if i=k, βi-i=0;
Therefore, it can the load factor β matrix after obtaining a n-1, specific as follows:
4. the THE UPFC site selecting method based on loading rate index according to claim 3, its feature exists
In, in step (5), the computational methods of circuit i location line construction complexity coefficient lambda are:
λi=∑ ldl/∑l
In formula, ldlFor the total length of this area's cable run, l is all total line lengths in this area.
5. the THE UPFC site selecting method based on loading rate index according to claim 4, its feature exists
In, in step (6), the computational methods of the addressing adaptive criteria of each bar circuit are:
1. setting γ is the unit matrix of n × 1 rank, that is,
2. according to below equation, obtain loading transformation matrices η
3. calculate the addressing adaptive coefficient matrix χ of circuit i
In formula, m is the transformer station's number between two branch roads.
6. the THE UPFC site selecting method based on loading rate index according to claim 5, its feature exists
In in step (6), for branch road i, its addressing adaptive criteria ω is:
ω=diag (χ abs (η)).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610836413.2A CN106356857B (en) | 2016-09-20 | 2016-09-20 | A kind of THE UPFC site selecting method based on loading rate index |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610836413.2A CN106356857B (en) | 2016-09-20 | 2016-09-20 | A kind of THE UPFC site selecting method based on loading rate index |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106356857A true CN106356857A (en) | 2017-01-25 |
CN106356857B CN106356857B (en) | 2018-10-30 |
Family
ID=57858839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610836413.2A Active CN106356857B (en) | 2016-09-20 | 2016-09-20 | A kind of THE UPFC site selecting method based on loading rate index |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106356857B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107204620A (en) * | 2017-07-18 | 2017-09-26 | 中国能源建设集团江苏省电力设计院有限公司 | A kind of THE UPFC site selecting method based on load voltage index |
CN107276076A (en) * | 2017-06-23 | 2017-10-20 | 国网江苏省电力公司 | A kind of two benches multiple target site selecting method of THE UPFC |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011130618A (en) * | 2009-12-18 | 2011-06-30 | Panasonic Corp | Power controller and power control method |
CN104410068A (en) * | 2014-12-01 | 2015-03-11 | 国网上海市电力公司 | Method for collocation optimization and operation control of controlled phase shifters |
CN105119277A (en) * | 2015-08-21 | 2015-12-02 | 国家电网公司 | UPFC address practical method |
CN105226668A (en) * | 2015-08-18 | 2016-01-06 | 国家电网公司 | A kind of addressing for UPFC and capacity collocation method |
CN105243432A (en) * | 2015-09-11 | 2016-01-13 | 国家电网公司 | NSGA-III-based UPFC (unified power flow controller) location and capacity multi-target configuration method |
CN105244916A (en) * | 2015-11-06 | 2016-01-13 | 江苏省电力公司电力科学研究院 | Flow state evaluation method for power grid with UPFC based on standardized Euclidean distance |
-
2016
- 2016-09-20 CN CN201610836413.2A patent/CN106356857B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011130618A (en) * | 2009-12-18 | 2011-06-30 | Panasonic Corp | Power controller and power control method |
CN104410068A (en) * | 2014-12-01 | 2015-03-11 | 国网上海市电力公司 | Method for collocation optimization and operation control of controlled phase shifters |
CN105226668A (en) * | 2015-08-18 | 2016-01-06 | 国家电网公司 | A kind of addressing for UPFC and capacity collocation method |
CN105119277A (en) * | 2015-08-21 | 2015-12-02 | 国家电网公司 | UPFC address practical method |
CN105243432A (en) * | 2015-09-11 | 2016-01-13 | 国家电网公司 | NSGA-III-based UPFC (unified power flow controller) location and capacity multi-target configuration method |
CN105244916A (en) * | 2015-11-06 | 2016-01-13 | 江苏省电力公司电力科学研究院 | Flow state evaluation method for power grid with UPFC based on standardized Euclidean distance |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107276076A (en) * | 2017-06-23 | 2017-10-20 | 国网江苏省电力公司 | A kind of two benches multiple target site selecting method of THE UPFC |
CN107276076B (en) * | 2017-06-23 | 2018-09-04 | 国网江苏省电力公司 | A kind of two benches multiple target site selecting method of THE UPFC |
CN107204620A (en) * | 2017-07-18 | 2017-09-26 | 中国能源建设集团江苏省电力设计院有限公司 | A kind of THE UPFC site selecting method based on load voltage index |
Also Published As
Publication number | Publication date |
---|---|
CN106356857B (en) | 2018-10-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090085407A1 (en) | Method and device for assessing and monitoring voltage security in a power system | |
CN110502777A (en) | IGBT module condition detecting system and method based on neural network prediction | |
CN103036230A (en) | Dynamic equivalence method of alternating-current-direct-current serial-parallel large power system based on engineering application | |
CN104966147A (en) | Power grid operating risk analyzing method in view of base state and accident state | |
CN105119277B (en) | A kind of practical method of THE UPFC addressing | |
CN104103019A (en) | Operation risk assessment method and assessment system of power distribution network containing distributed power supply | |
CN109034461A (en) | A kind of voltage dip Stochastic prediction method based on actual electric network monitoring information | |
CN104485660A (en) | Directed relational graph-based power distribution network reliability evaluation method | |
CN109546677B (en) | Safety control strategy solving method for large-scale offshore wind power flexible sending-out system | |
CN103632311A (en) | Fault examining system and method for power grid operation | |
CN104715423A (en) | Method for assessing risk and reliability of power distribution network | |
CN104112076A (en) | Fuzzy mathematics based operational risk assessment method and fuzzy mathematics based operational risk assessment system | |
CN104166940A (en) | Method and system for assessing power distribution network operation risk | |
CN107425527A (en) | A kind of THE UPFC static security prevention and control method | |
CN103824124B (en) | A kind of energy potential evaluation method for grid company | |
CN104392397A (en) | Entropy weight method based short-circuit current suppression scheme evaluation method | |
CN107257130A (en) | The low-voltage network loss computing method of decoupling is measured based on region | |
CN106875127A (en) | THE UPFC Reliability modeling and its access system adequacy evaluation method | |
CN104331849B (en) | Electrical power system risk ranking method and application | |
CN109038572A (en) | Consider the voltage security range determining method of AC-DC hybrid power grid failure | |
CN104361531A (en) | Identification method and system for high-risk failure equipment of substation automation system | |
CN106356846A (en) | Time-based initial-stage power grid cascading failure analog simulation method | |
CN106356857A (en) | Unified power flow controller site-selecting method based on load variation rate index | |
CN106483393A (en) | Collocation method and system are unified in harmonic wave and voltage dip monitoring point | |
CN107204620B (en) | A kind of THE UPFC site selecting method based on load voltage index |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |