CN109659934A - New-energy grid-connected based on short circuit current nargin plans preferred method - Google Patents
New-energy grid-connected based on short circuit current nargin plans preferred method Download PDFInfo
- Publication number
- CN109659934A CN109659934A CN201811583971.8A CN201811583971A CN109659934A CN 109659934 A CN109659934 A CN 109659934A CN 201811583971 A CN201811583971 A CN 201811583971A CN 109659934 A CN109659934 A CN 109659934A
- Authority
- CN
- China
- Prior art keywords
- grid
- short circuit
- circuit current
- programme
- new
- 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
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
-
- 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]
Abstract
The present invention provides a kind of, and the new-energy grid-connected based on short circuit current nargin plans preferred method, short circuit current assessment is carried out to the bus for concentrating each voltage class of grid entry point under grid-connected programme first, determine whether each busbar short-circuit electric current of grid entry point is exceeded according to short circuit current margin index Igt, adjustment is optimized to the grid connection capacity and grid-connected mode of new energy electric field according to judgement result.New-energy grid-connected provided by the invention based on short circuit current nargin plans preferred method, effectively prevents the problems such as new energy concentrates the circuit overload of grid-connected rear near region system, voltage out-of-limit.The factors such as system safety and stability evaluation result and economy are finally combined, it is comprehensive preferably to go out grid-connected programme.This method is simple, quick, provides practical guiding opinion for Operation of Electric Systems and planning personnel, and avoids the short circuit current excessive problem that extensive new energy concentrates grid entry point after access, improves the safety and stability of Operation of Electric Systems.
Description
Technical field
The present invention relates to technical field of high-voltage electrical network, especially a kind of new-energy grid-connected planning based on short circuit current nargin
Preferred method.
Background technique
Calculation of short-circuit current is Power System Planning, design, the calculation analysis work that must be carried out in operation.Short circuit current
The exceeded safety that may destroy power grid, even results in the collapse of entire interacted system.
In recent years, China pays much attention to the renewable energy such as development and utilization wind-powered electricity generation, solar energy, the development and utilization of new energy
As the important measure for improving energy resource structure, pushing environmental protection, keeping economy and society sustainable development.It is grid-connected with concentrating
The increase of new energy scale, new energy can not be ignored the influence for concentrating grid entry point short circuit current.
Currently, not considering whether grid entry point short circuit current is exceeded in new-energy grid-connected planning.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of, and the new-energy grid-connected planning based on short circuit current nargin is preferred
Method provides practical guiding opinion for Operation of Electric Systems and planning personnel, and after avoiding extensive new energy from concentrating access simultaneously
The short circuit current excessive problem of site, improves the safety and stability of Operation of Electric Systems.
The present invention provides a kind of, and the new-energy grid-connected based on short circuit current nargin plans preferred method, including walks as follows
It is rapid:
A: multiple grid-connected programmes are provided；
B: selecting one of them grid-connected programme, and obtains and concentrate each voltage at grid entry point under selected grid-connected programme
The short circuit current margin index Igt of grade bus；
C: the simulation model of grid-connected programme is established；
D: simulation calculating is carried out to grid-connected programme, obtains the short circuit current nargin for concentrating each voltage class bus at grid entry point
Value Ig；
The size of E: the short circuit current margin value Ig and the short circuit current margin index Igt, if the short circuit current
Margin value Ig is less than the short circuit current margin index Igt, F is entered step, if the short circuit current margin value Ig is more than or equal to
The short circuit current margin index Igt, enters step G；
F: optimizing grid-connected programme, after the completion of optimization, repeats step C ~ E；
G: the assessment of system security and stability is carried out to grid-connected programme；
H: if assessment result be it is feasible, retain selected grid-connected programme and simultaneously enter next step, if assessment result is not
It is feasible, then it deletes selected grid-connected programme and enters step B；
I: repeating step B ~ H, until the grid-connected programme of each of step A is processed, processing mode is to retain or delete
It removes；
J: an optimal grid-connected programme is selected in the multiple grid-connected programmes remained.
Further, in the step F, method that grid-connected programme is optimized are as follows: cut down new energy by step-length
It is installed capacity, grid-connected after first concatenating each new energy electric field or by part new energy unit reconfiguration to other grid entry points.
Further, in the step G, the assessment of system security and stability specifically comprises the following steps:
G1: static system N-1 check analysis is carried out to grid-connected programme；
G2: system transient modelling N-1 check analysis is carried out to grid-connected programme；
G3: system voltage fluction analysis is carried out to grid-connected programme.
Further, in the step G1, specifically comprise the following steps:
G1.1: in simulation model, setting power grid is low ebb load, sets maximum output for grid-connected new energy unit, will simultaneously
Net near region conventional power unit is set as the power that overfills；
G1.2: simulation calculating is carried out to grid-connected programme, calculates the active power value Pi of grid-connected near region main transformer or route；
G1.3: the active power limiting value Pmaxi of grid-connected near region main transformer or route is obtained；
G1.4: if the active power value Pi of the grid-connected near region main transformer or route is greater than having for the grid-connected near region main transformer or route
Function power threshold Pmaxi enters step H, and assessment result is infeasible；If the active power of grid-connected near region main transformer or route
Value Pi is less than or equal to the active power limiting value Pmaxi of the grid-connected near region main transformer or route, enters step G2.
Further, in the step G2, specifically comprise the following steps:
G2.1: in simulation model, setting power grid is peak load, sets maximum output for grid-connected new energy unit, will simultaneously
Net near region conventional power unit is set as the power that overfills, and it is the permanent N-1 failure of three-phase that grid-connected near region line and transformer, which is respectively set,；
G2.2: simulation calculating is carried out to grid-connected programme；
G2.3: if there is any one of generator rotor angle unstability, Voltage Instability and frequency unstability, H is entered step, and assessment result is
It is infeasible；If any one of generator rotor angle unstability, Voltage Instability and frequency unstability do not occur, G3 is entered step.
Further, in the step G3, specifically comprise the following steps:
G3.1: in simulation model, setting power grid is low ebb load, sets 0 power output for grid-connected new energy unit, will be grid-connected close
Area's conventional power unit is set as the power that overfills, and the switching capacity that static reactive power compensation equipment in power grid is arranged is kept not in simulation process
Become；
G3.2: simulation calculating is carried out to grid-connected programme, calculates the first voltage value Umaxi of each bus in grid-connected near region；
G3.3: maximum output is set by grid-connected new energy unit again；
G3.4: simulation calculating is carried out to grid-connected programme, calculates the second voltage value Umini of each bus in grid-connected near region；
G3.5: the electricity of each bus in grid-connected near region is calculated according to the first voltage value Umaxi and the second voltage value Umini
Press undulating value Ubdi；
G3.6: if the magnitude of a voltage fluctuation Ubdi is greater than 10%, H is entered step, and assessment result is infeasible；If the voltage
Undulating value Ubdi is less than or equal to 10%, enters step H, and assessment result is feasible.
Further, in the step J, multi-angle carries out overall merit to the multiple grid-connected programmes remained,
An optimal grid-connected programme is selected according to comprehensive evaluation result.
A kind of new-energy grid-connected based on short circuit current nargin provided by the invention plans preferred method, transports for electric system
Capable and planning personnel provides practical guiding opinion, and avoids the short circuit current that extensive new energy concentrates grid entry point after access
Excessive problem improves the safety and stability of Operation of Electric Systems.
Detailed description of the invention
Fig. 1 is that the present invention is based on the flow charts of the new-energy grid-connected of short circuit current nargin planning preferred method；
Fig. 2 is certain wind farm grid-connected one schematic diagram of design scheme provided by the present invention；
Fig. 3 is certain wind farm grid-connected two schematic diagram of design scheme provided by the present invention；
Fig. 4 is certain wind farm grid-connected three schematic diagram of design scheme provided by the present invention；
Fig. 5 is certain wind farm grid-connected four schematic diagram of design scheme provided by the present invention；
Fig. 6 is certain wind farm grid-connected five schematic diagram of design scheme provided by the present invention；
Fig. 7 is certain wind farm grid-connected design scheme preferred result table provided by the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
A kind of new-energy grid-connected planning preferred method based on short circuit current nargin, as shown in Figure 1, including the following steps:
Preliminary preparation: investigation collects area power grid data, the grid-connected design scheme of new energy electric field, concentrates each bus of grid entry point
Breaker related data.It specifically includes: investigating the status and planning data of area power grid, comprising: grid structure, generator ginseng
Number, load parameter, line parameter circuit value, transformer parameter etc.；Investigate the status and planning data of each new energy electric field, comprising: new energy
Source electric field installed capacity, new energy source machine set type and its parameter, new-energy grid-connected design scheme, boosting variable element, grid-connected route
Parameter etc.；Each voltage class bus breaker drop-out current value Imaxi of grid entry point is concentrated in investigation, determines the short circuit current of each bus
Margin index Igt.
A: multiple grid-connected programmes are provided.
B: selecting one of them grid-connected programme, and obtains each at concentration grid entry point under selected grid-connected programme
The short circuit current margin index Igt of voltage class bus.
C: the simulation model of grid-connected programme is established.
D: simulation calculating is carried out to grid-connected programme, obtains the short circuit current for concentrating each voltage class bus at grid entry point
Margin value Ig:
Specifically,
Simulation calculating calculates the short-circuit current value Ii that each voltage class bus at grid entry point is concentrated under grid-connected programme；
Such as following formula, outlet current margins value Ig is calculated according to bus breaker drop-out current value Imaxi and short-circuit current value Ii；
Ig=1-(Ii/Imaxi)*100%。
The size of E: the short circuit current margin value Ig and the short circuit current margin index Igt, if the short circuit
Current margins value Ig is less than the short circuit current margin index Igt, F is entered step, if the short circuit current margin value Ig is greater than
Equal to the short circuit current margin index Igt, G is entered step.
F: optimizing grid-connected programme, after the completion of optimization, repeats step C ~ E.
Wherein, the method grid-connected programme optimized are as follows: cut down new energy installed capacity, by each new energy by step-length
Source electric field is grid-connected after first concatenating or by part new energy unit reconfiguration to other grid entry points.
G: the assessment of system security and stability is carried out to grid-connected programme:
G1: static system N-1 check analysis is carried out to grid-connected programme:
G1.1: in simulation model, setting power grid is low ebb load, sets maximum output for grid-connected new energy unit, will simultaneously
Net near region conventional power unit is set as the power that overfills；
G1.2: simulation calculating is carried out to grid-connected programme, calculates the active power value Pi of grid-connected near region main transformer or route；
G1.3: obtaining the active power limiting value Pmaxi of grid-connected near region main transformer or route, can be according to each route, transformer model
It determines；
G1.4: if the active power value Pi of the grid-connected near region main transformer or route is greater than having for the grid-connected near region main transformer or route
Function power threshold Pmaxi enters step H, and assessment result is infeasible；If the active power of grid-connected near region main transformer or route
Value Pi is less than or equal to the active power limiting value Pmaxi of the grid-connected near region main transformer or route, enters step G2.
G2: system transient modelling N-1 check analysis is carried out to grid-connected programme:
G2.1: in simulation model, setting power grid is peak load, sets maximum output for grid-connected new energy unit, will simultaneously
Net near region conventional power unit is set as the power that overfills, and it is the permanent N-1 failure of three-phase that grid-connected near region line and transformer, which is respectively set,；
G2.2: simulation calculating is carried out to grid-connected programme；
G2.3: if there is any one of generator rotor angle unstability, Voltage Instability and frequency unstability, H is entered step, and assessment result is
It is infeasible；If any one of generator rotor angle unstability, Voltage Instability and frequency unstability do not occur, G3 is entered step.
G3: system voltage fluction analysis is carried out to grid-connected programme:
G3.1: in simulation model, setting power grid is low ebb load, sets 0 power output for grid-connected new energy unit, will be grid-connected close
Area's conventional power unit is set as the power that overfills, and the switching capacity that static reactive power compensation equipment in power grid is arranged is kept not in simulation process
Become；
G3.2: simulation calculating is carried out to grid-connected programme, calculates the first voltage value Umaxi of each bus in grid-connected near region；
G3.3: maximum output is set by grid-connected new energy unit again；
G3.4: simulation calculating is carried out to grid-connected programme, calculates the second voltage value Umini of each bus in grid-connected near region；
G3.5: the electricity of each bus in grid-connected near region is calculated according to the first voltage value Umaxi and the second voltage value Umini
Press undulating value Ubdi；
G3.6: if the magnitude of a voltage fluctuation Ubdi is greater than 10%, H is entered step, and assessment result is infeasible；If the voltage
Undulating value Ubdi is less than or equal to 10%, enters step H, and assessment result is feasible.
H: if assessment result be it is feasible, retain selected grid-connected programme and simultaneously enter next step, if assessment result
To be infeasible, then delete selected grid-connected programme and enter step B.
I: repeating step B ~ H, until the grid-connected programme of each of step A is processed, processing mode is to retain
Or it deletes.
J: selecting an optimal grid-connected programme in the multiple grid-connected programmes remained, specifically, from
The multi-angles such as reliability, economy carry out overall merit to the multiple grid-connected programmes remained, according to overall merit knot
Fruit selects an optimal grid-connected programme.
In embodiment, the bus progress short circuit current that each voltage class of grid entry point is concentrated under grid-connected programme is commented first
Estimate, determines whether each busbar short-circuit electric current of grid entry point is exceeded according to short circuit current margin index Igt, according to judgement result to new energy
The grid connection capacity and grid-connected mode of source electric field optimize adjustment, and complete to concentrate the static N- of grid-connected rear system on this basis
1, the security and stability such as transient state N-1 and voltage fluctuation are assessed, and effectively prevent the route that new energy concentrates grid-connected rear near region system
The problems such as overload, voltage out-of-limit.The factors such as system safety and stability evaluation result and economy are finally combined, synthesis is preferably grid-connected out
Programme.This method is simple, quick, provides practical guiding opinion for Operation of Electric Systems and planning personnel, and avoid
Extensive new energy concentrates the short circuit current excessive problem of grid entry point after access, improves the safety and stabilization of Operation of Electric Systems
Property.
For the application method for more understanding the present embodiment, sharpen understanding for practical right example.
Certain wind power plant WF plans installed capacity 150MW, accesses somewhere power grid with 110kV voltage class, Fig. 2 ~ Fig. 6 is pre-
The wind farm grid-connected design drawing of choosing, this area's power grid 110kV bus breaker drop-out current are 31.5kA, short circuit current nargin
Index Igt is set as 10%.Preferred method is planned using the new-energy grid-connected based on short circuit current nargin, to each grid-connected planning side
Shown in preferred result Fig. 7 of case.There is grid-connected near region route in the assessment of system security and stability respectively in scheme one and scheme four
Overload and the out-of-limit problem of near region busbar voltage fluctuation, therefore be deleted in steph；Furthermore under scheme two, by grid entry point short circuit electricity
It flows margin index limitation to require, blower grid connection capacity is optimized, optimization rear fan grid connection capacity is smaller, society's effect of generation
Benefit and economic benefit are poor；Compared with scheme three, wind farm grid-connected line length is longer under scheme five, and economic benefit is slightly poor.Therefore
It is comprehensive preferably to go out scheme three as wind-electricity integration programme in step J.
The scope of protection of the present invention is not limited to this.Those skilled in the art are made equivalent on the basis of the present invention
Substitution or transformation, it is within the scope of the present invention.Protection scope of the present invention is subject to claims.
Claims (7)
1. a kind of new-energy grid-connected based on short circuit current nargin plans preferred method, which comprises the steps of:
A: multiple grid-connected programmes are provided；
B: selecting one of them grid-connected programme, and obtains and concentrate each voltage at grid entry point under selected grid-connected programme
The short circuit current margin index Igt of grade bus；
C: the simulation model of grid-connected programme is established；
D: simulation calculating is carried out to grid-connected programme, obtains the short circuit current nargin for concentrating each voltage class bus at grid entry point
Value Ig；
The size of E: the short circuit current margin value Ig and the short circuit current margin index Igt, if the short circuit current
Margin value Ig is less than the short circuit current margin index Igt, F is entered step, if the short circuit current margin value Ig is more than or equal to
The short circuit current margin index Igt, enters step G；
F: optimizing grid-connected programme, after the completion of optimization, repeats step C ~ E；
G: the assessment of system security and stability is carried out to grid-connected programme；
H: if assessment result be it is feasible, retain selected grid-connected programme and simultaneously enter next step, if assessment result is not
It is feasible, then it deletes selected grid-connected programme and enters step B；
I: repeating step B ~ H, until the grid-connected programme of each of step A is processed, processing mode is to retain or delete
It removes；
J: an optimal grid-connected programme is selected in the multiple grid-connected programmes remained.
2. the new-energy grid-connected based on short circuit current nargin plans preferred method as described in claim 1, which is characterized in that institute
It states in step F, the method that grid-connected programme is optimized are as follows: cut down new energy installed capacity, by each new energy by step-length
It is grid-connected or by part new energy unit reconfiguration to other grid entry points after electric field concatenation.
3. the new-energy grid-connected based on short circuit current nargin plans preferred method as described in claim 1, which is characterized in that institute
It states in step G, the assessment of system security and stability specifically comprises the following steps:
G1: static system N-1 check analysis is carried out to grid-connected programme；
G2: system transient modelling N-1 check analysis is carried out to grid-connected programme；
G3: system voltage fluction analysis is carried out to grid-connected programme.
4. the new-energy grid-connected based on short circuit current nargin plans preferred method as claimed in claim 3, which is characterized in that institute
It states in step G1, specifically comprises the following steps:
G1.1: in simulation model, setting power grid is low ebb load, sets maximum output for grid-connected new energy unit, will simultaneously
Net near region conventional power unit is set as the power that overfills；
G1.2: simulation calculating is carried out to grid-connected programme, calculates the active power value Pi of grid-connected near region main transformer or route；
G1.3: the active power limiting value Pmaxi of grid-connected near region main transformer or route is obtained；
G1.4: if the active power value Pi of the grid-connected near region main transformer or route is greater than having for the grid-connected near region main transformer or route
Function power threshold Pmaxi enters step H, and assessment result is infeasible；If the active power of grid-connected near region main transformer or route
Value Pi is less than or equal to the active power limiting value Pmaxi of the grid-connected near region main transformer or route, enters step G2.
5. the new-energy grid-connected based on short circuit current nargin plans preferred method as claimed in claim 3, which is characterized in that institute
It states in step G2, specifically comprises the following steps:
G2.1: in simulation model, setting power grid is peak load, sets maximum output for grid-connected new energy unit, will simultaneously
Net near region conventional power unit is set as the power that overfills, and it is the permanent N-1 failure of three-phase that grid-connected near region line and transformer, which is respectively set,；
G2.2: simulation calculating is carried out to grid-connected programme；
G2.3: if there is any one of generator rotor angle unstability, Voltage Instability and frequency unstability, H is entered step, and assessment result is
It is infeasible；If any one of generator rotor angle unstability, Voltage Instability and frequency unstability do not occur, G3 is entered step.
6. the new-energy grid-connected based on short circuit current nargin plans preferred method as claimed in claim 3, which is characterized in that institute
It states in step G3, specifically comprises the following steps:
G3.1: in simulation model, setting power grid is low ebb load, sets 0 power output for grid-connected new energy unit, will be grid-connected close
Area's conventional power unit is set as the power that overfills, and the switching capacity that static reactive power compensation equipment in power grid is arranged is kept not in simulation process
Become；
G3.2: simulation calculating is carried out to grid-connected programme, calculates the first voltage value Umaxi of each bus in grid-connected near region；
G3.3: maximum output is set by grid-connected new energy unit again；
G3.4: simulation calculating is carried out to grid-connected programme, calculates the second voltage value Umini of each bus in grid-connected near region；
G3.5: the electricity of each bus in grid-connected near region is calculated according to the first voltage value Umaxi and the second voltage value Umini
Press undulating value Ubdi；
G3.6: if the magnitude of a voltage fluctuation Ubdi is greater than 10%, H is entered step, and assessment result is infeasible；If the voltage
Undulating value Ubdi is less than or equal to 10%, enters step H, and assessment result is feasible.
7. the new-energy grid-connected based on short circuit current nargin plans preferred method as described in claim 1, which is characterized in that institute
It states in step J, multi-angle carries out overall merit to the multiple grid-connected programmes remained, is selected according to comprehensive evaluation result
An optimal grid-connected programme.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583971.8A CN109659934B (en) | 2018-12-24 | 2018-12-24 | New energy grid-connected planning optimization method based on short-circuit current margin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811583971.8A CN109659934B (en) | 2018-12-24 | 2018-12-24 | New energy grid-connected planning optimization method based on short-circuit current margin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109659934A true CN109659934A (en) | 2019-04-19 |
| CN109659934B CN109659934B (en) | 2021-08-03 |
Family
ID=66115061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811583971.8A Active CN109659934B (en) | 2018-12-24 | 2018-12-24 | New energy grid-connected planning optimization method based on short-circuit current margin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109659934B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110569534A (en) * | 2019-07-22 | 2019-12-13 | 中国电力科学研究院有限公司 | new energy grid-connected scale determination method and system considering short-circuit current influence |
| CN112417643A (en) * | 2020-10-13 | 2021-02-26 | 国网山东省电力公司电力科学研究院 | Thermal power generating unit maximum output real-time evaluation method and system based on blower current |
| CN112800683A (en) * | 2021-03-10 | 2021-05-14 | 广东电网有限责任公司电力调度控制中心 | System short-circuit current level evaluation method and system based on convolutional neural network |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916990A (en) * | 2010-08-18 | 2010-12-15 | 华北电力科学研究院有限责任公司 | Optimized check method of short-circuit current limiting measure |
| CN102214922A (en) * | 2011-06-27 | 2011-10-12 | 山东电力研究院 | Evaluation system of power network planning scheme |
| CN102542355A (en) * | 2011-11-19 | 2012-07-04 | 国网电力科学研究院 | Operation planning part load method |
| CN103401270A (en) * | 2013-08-13 | 2013-11-20 | 国家电网公司 | Method and device for determining accepting ability of medium and lower voltage distribution network to distributed power sources |
| CN104882905A (en) * | 2015-03-30 | 2015-09-02 | 国电南瑞科技股份有限公司 | New energy available capability assessment method considering transient security constraints |
| US20150310366A1 (en) * | 2012-11-09 | 2015-10-29 | Tianjin University | Security region based security-constrained economic dispatching method |
| US20150349528A1 (en) * | 2013-04-17 | 2015-12-03 | State Grid Corporation Of China | Wind power bundling control method after wind power and thermal power are connected to grid |
| CN106684859A (en) * | 2016-11-24 | 2017-05-17 | 东南大学 | Power grid short circuit current suppression method based on dynamic partition technique |
| CN108418255A (en) * | 2018-03-01 | 2018-08-17 | 中国电力科学研究院有限公司 | A kind of extra-high voltage direct-current suitable for the new energy containing high permeability sends Electric power network planning method and system outside |
-
2018
- 2018-12-24 CN CN201811583971.8A patent/CN109659934B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916990A (en) * | 2010-08-18 | 2010-12-15 | 华北电力科学研究院有限责任公司 | Optimized check method of short-circuit current limiting measure |
| CN102214922A (en) * | 2011-06-27 | 2011-10-12 | 山东电力研究院 | Evaluation system of power network planning scheme |
| CN102542355A (en) * | 2011-11-19 | 2012-07-04 | 国网电力科学研究院 | Operation planning part load method |
| US20150310366A1 (en) * | 2012-11-09 | 2015-10-29 | Tianjin University | Security region based security-constrained economic dispatching method |
| US20150349528A1 (en) * | 2013-04-17 | 2015-12-03 | State Grid Corporation Of China | Wind power bundling control method after wind power and thermal power are connected to grid |
| CN103401270A (en) * | 2013-08-13 | 2013-11-20 | 国家电网公司 | Method and device for determining accepting ability of medium and lower voltage distribution network to distributed power sources |
| CN104882905A (en) * | 2015-03-30 | 2015-09-02 | 国电南瑞科技股份有限公司 | New energy available capability assessment method considering transient security constraints |
| CN106684859A (en) * | 2016-11-24 | 2017-05-17 | 东南大学 | Power grid short circuit current suppression method based on dynamic partition technique |
| CN108418255A (en) * | 2018-03-01 | 2018-08-17 | 中国电力科学研究院有限公司 | A kind of extra-high voltage direct-current suitable for the new energy containing high permeability sends Electric power network planning method and system outside |
Non-Patent Citations (4)
| Title |
|---|
| XIE YAN,ET AL.: "UHV Grid Delamination and Partition Planning Method and Application Based on Short Circuit Current Coordination", 《IEEE 2018 INTERNATIONAL CONFERENCE ON POWER SYSTEM TECHNOLOGY》 * |
| 周勤勇: "多直流馈入受端电网直流受电规模研究", 《中国博士学位论文全文数据库工程科技Ⅱ辑》 * |
| 宋柄兵 等: "计及短路电流限制的输电网双层扩展规划模型", 《电工技术学报》 * |
| 张思: "考虑短路电流的输电网优化规划", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110569534A (en) * | 2019-07-22 | 2019-12-13 | 中国电力科学研究院有限公司 | new energy grid-connected scale determination method and system considering short-circuit current influence |
| CN110569534B (en) * | 2019-07-22 | 2024-02-20 | 中国电力科学研究院有限公司 | New energy grid-connected scale determination method and system considering short-circuit current influence |
| CN112417643A (en) * | 2020-10-13 | 2021-02-26 | 国网山东省电力公司电力科学研究院 | Thermal power generating unit maximum output real-time evaluation method and system based on blower current |
| CN112417643B (en) * | 2020-10-13 | 2023-05-30 | 国网山东省电力公司电力科学研究院 | Thermal power generating unit maximum output real-time evaluation method and system based on blower current |
| CN112800683A (en) * | 2021-03-10 | 2021-05-14 | 广东电网有限责任公司电力调度控制中心 | System short-circuit current level evaluation method and system based on convolutional neural network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109659934B (en) | 2021-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chaudhary et al. | Chopper controlled resistors in VSC-HVDC transmission for WPP with full-scale converters | |
| CN108418255A (en) | A kind of extra-high voltage direct-current suitable for the new energy containing high permeability sends Electric power network planning method and system outside | |
| Rylander et al. | Methods to determine recommended feeder-wide advanced inverter settings for improving distribution system performance | |
| CN109659934A (en) | New-energy grid-connected based on short circuit current nargin plans preferred method | |
| CN107732951A (en) | Direct current locking failure impacts the multiple resource control method for coordinating and device of communication channel | |
| CN105375513B (en) | A kind of 110 kilovolts of wind power field automatic voltage controls based on real-time on-line equivalent | |
| Maya et al. | A three phase power flow algorithm for distribution network incorporating the impact of distributed generation models | |
| Maqbool et al. | Fault current analysis for grid-connected and Islanded microgrid modes | |
| Youssef et al. | Comparative study of voltage stability analysis for renewable energy grid-connected systems using PSS/E | |
| CN106385055B (en) | A kind of power distribution network Security Checking method containing distributed generation resource | |
| Kumar et al. | A novel method to investigate voltage stability of IEEE-14 bus wind integrated system using PSAT | |
| CN107069747B (en) | A kind of minimum start-up mode based on regional voltage stabilization determines method | |
| Mahendru et al. | Reduction in system losses and power demand by combination of optimal power flow and conservation voltage reduction using smart PV inverters | |
| Angeles et al. | Fault evaluation and performance of an IEEE Bus 30 power distribution network with distributed generation (DG) | |
| Singh et al. | Particle swarm optimization approach for distributed generation allocation planning for voltage profile improvement | |
| CN109560568A (en) | Double-fed fan motor field maximum based on short circuit current nargin can access capacity determining methods | |
| Bhatt et al. | Impact of solar PV inverters on the power quality of smart urban distribution grid | |
| CN106340906A (en) | AC and DC system low voltage load shedding optimization method based on improved genetic algorithm | |
| Knezović et al. | Modelling and simulating the impact of a small solar plant to the low-voltage network | |
| Ribeiro et al. | Voltage profile improvement and losses minimization in radial grids, with optimal location of distributed generation systems | |
| Li et al. | Wind farm electromagnetic dynamic model and outgoing line protection relay RTDS testing | |
| Aghanoori et al. | Investigation of microgrid instability caused by time delay | |
| Alayande et al. | Power quality considerations for distributed generation integration in the nigerian distribution network using neplan software | |
| Santos et al. | Modeling of the generalized unified power flow controller to integrate in power flow studies | |
| Li et al. | Active control of power flow in distribution network using flexible tie switches |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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 |