CN110458334A - A kind of limiting short-circuit current method of operation aid decision-making method - Google Patents
A kind of limiting short-circuit current method of operation aid decision-making method Download PDFInfo
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- CN110458334A CN110458334A CN201910659442.XA CN201910659442A CN110458334A CN 110458334 A CN110458334 A CN 110458334A CN 201910659442 A CN201910659442 A CN 201910659442A CN 110458334 A CN110458334 A CN 110458334A
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- aid decision
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- 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"
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- 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
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
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- 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—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention discloses a kind of limiting short-circuit current method of operation aid decision-making methods, it is characterized in that, forming the Load flow calculation data of planned manner a few days ago based on generation schedule a few days ago, load prediction, maintenance plan data and the reactive voltage data of similar operation day and carrying out Load flow calculation；Calculation of short-circuit current based on each bus and route in Load flow calculation data and calculated result carry out system；Such as there is bus and route that short circuit current is more than short-circuiting device rated rupturing capacity, then carries out aid decision calculating, otherwise terminate this method；Consider the synthesis aid decision of multiclass measure and the out-of-limit bus of multiple short circuit currents and route and forms method of operation adjustable strategies；Safety and stability check is carried out to the method for operation adjusted, adjustable strategies is obtained if it can satisfy safety and stability and require, otherwise directly terminates this method.Advantage: can be effectively reduced short circuit current level, enhance the safety margin and power supply reliability of power grid, effectively improve the safety and economic operation level of power grid.
Description
Technical field
The present invention relates to a kind of limiting short-circuit current method of operation aid decision-making methods, belong to power system automation technology
Field.
Background technique
As power grid scale constantly expands, the tightness degree enhancing contacted between power grid, receiving end grid short circuit electric current is generally forced
It is closely even more than breaker maximum rupturing capacity, is forced to take the measure for cut-offfing and jumping logical route for a long time, main grid structure structural integrity
Property constantly weaken, the regulation of important power transmission section is difficult, and major network power supply capacity and section ability to transmit electricity are restricted.
When power grid operation personnel arrange the method for operation at present, the short circuit of each point is checked according to maximum short circuit current calculating principle
Electric current proposes the scheme of limiting short-circuit current when discovery short circuit current is exceeded.The program calculates maximum according to most severe mode can
The short circuit current of energy, the measures for limiting short-circuit current taken is overly conservative, and the safety margin and power supply for reducing operation of power networks can
By property.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, a kind of limiting short-circuit current operation is provided
Mode aid decision-making method is formed by operation plan mode a few days ago and is calculated based on data progress calculation of short-circuit current and aid decision
It calculates, comprehensive coordination considers that the out-of-limit bus of multiple short circuit currents and multiclass measure obtain method of operation aid decision, can effectively drop
Low short circuit current level enhances the safety margin and power supply reliability of power grid, effectively improves the safety and economical operation water of power grid
It is flat.
In order to solve the above technical problems, the present invention provides a kind of limiting short-circuit current method of operation aid decision-making method, packet
Include following steps:
Step 1: based on generation schedule a few days ago, load prediction, maintenance plan data and the similar reactive voltage data shape for running day
At planned manner a few days ago Load flow calculation data and carry out Load flow calculation；
Step 2: the Load flow calculation data based on planned manner a few days ago form the calculating that calculation of short-circuit current and aid decision calculate
Data, and the calculation of short-circuit current based on each bus and route in the calculating data and calculation of tidal current carry out system；
Step 3: such as exist short circuit current be more than short-circuiting device rated rupturing capacity bus and route, then be transferred to step 4 carry out it is auxiliary
It helps decision to calculate, otherwise terminates this method；
Step 4: calculating highly resistance, stoppage in transit route, stoppage in transit generator, bus splitting and route the string operation control out of connecting that puts into operation
Measure accounts for multiclass measure and multiple short circuit currents based on sensitivity to the short circuit current sensibility of out-of-limit bus and route
The synthesis aid decision of out-of-limit bus and route simultaneously forms method of operation adjustable strategies；
Step 5: safety and stability check being carried out to the method for operation adjusted, exports operation if it can satisfy safety and stability and require
Mode adjustable strategies, otherwise directly terminate this method.
Further, the step 1, specifically:
It is formed a few days ago based on generation schedule a few days ago, load prediction, maintenance plan data and the reactive voltage data of similar operation day
The Load flow calculation data of 96 planned manners simultaneously carry out Load flow calculation.
Further, it is as follows that the calculating data method that calculation of short-circuit current and aid decision calculate is formed in the step 2:
The maximum mode of load is selected in 96 planned manners a few days ago as basic mode, maintenance plan is put into operation base in equipment
The equipment that plinth mode does not put into operation all puts into operation, and calculates so as to form Load flow calculation data as calculation of short-circuit current and aid decision
Calculating data.
Further, based on the calculation of short-circuit current for calculating each bus and route in data carry out system in the step 2
Method is as follows:
Using the short-circuit current calculation method for being not based on trend, voltage source voltage is taken as 96 planned manner Load flow calculation knots a few days ago
Fruit median generatrix voltage max.
Further, consider that the synthesis of multiclass measure and the out-of-limit bus of multiple short circuit currents and route is auxiliary in the step 4
Help decision-making technique as follows:
Screen to the short circuit current sensibility of out-of-limit bus and route be greater than the control measure of threshold value as the out-of-limit bus and
Effective control measure are ranked up, wherein same priority by effective control measure of route according to the priority defined in advance
Inside is sorted according to short circuit current sensibility, effective control measure queue of each out-of-limit bus and route is obtained, according to control
Queue sequence successively increases control measure, obtains the control program set of out-of-limit bus and route；
The combination of enumerating that control program is carried out between each out-of-limit bus and the control program set of route, obtains and considers multiclass
The synthesis aid decision control program set of measure and the out-of-limit bus of multiple short circuit currents and route, to all controls in the set
Scheme processed carries out calculation of short-circuit current using cluster Computing Platform parallel, obtains the calculation of short-circuit current knot under each control program
Fruit, selection meets all short-circuiting device rupturing capacitys and requires and control the smallest calculated result of cost in all calculated results, then
The corresponding control program of the result is method of operation adjustable strategies.
Further, the safety and stability is checked is checked using static and transient safe and stable.
Advantageous effects of the invention:
It is formed based on operation plan mode a few days ago and calculates data progress calculation of short-circuit current and aid decision calculating, it may be considered that not
The variation for carrying out the method for operation carries out advanced decision, the frequent adjusting for avoiding actual schedule from operating；Calculating data generation and short circuit
Conservatism is considered on current calculation method, it is ensured that the availability of calculated result；Consider that multiclass measure and multiple short circuit currents are got over
The comprehensive coordination aid decision for limiting bus, improves the practicability of calculated result；Limiting short-circuit current operation proposed by the present invention
Mode aid decision-making method, can be effectively reduced short circuit current level, enhance the safety margin and power supply reliability of power grid, effectively
Improve the safety and economic operation level of power grid.
Detailed description of the invention
Fig. 1 is the flow diagram for inventing a kind of limiting short-circuit current method of operation aid decision-making method.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, a kind of limiting short-circuit current method of operation aid decision-making method, includes the following steps:
Step 1: based on generation schedule a few days ago, load prediction, maintenance plan data and the similar reactive voltage data shape for running day
At the Load flow calculation data of 96 planned manners a few days ago and carry out Load flow calculation；
Step 2: the Load flow calculation data based on planned manner a few days ago form the calculating that calculation of short-circuit current and aid decision calculate
Data, and the calculation of short-circuit current based on each bus and route in the calculating data carry out system；
Step 3: such as exist short circuit current be more than short-circuiting device rated rupturing capacity bus and route, then be transferred to step 4 carry out it is auxiliary
It helps decision to calculate, otherwise terminates this method；
Step 4: calculating highly resistance, stoppage in transit route, stoppage in transit generator, bus splitting and route the string operation control out of connecting that puts into operation
Measure accounts for multiclass measure and multiple short circuit currents based on sensitivity to the short circuit current sensibility of out-of-limit bus and route
The synthesis aid decision of out-of-limit bus and route simultaneously forms method of operation adjustable strategies；
Step 5: static and transient safe and stable being carried out to the method for operation adjusted and is checked, such as can satisfy safety and stability requirement
Method of operation adjustable strategies are then exported, this method is otherwise directly terminated.
In the present embodiment, the calculating data method that formation calculation of short-circuit current and aid decision calculate in the step 2 is such as
Under:
The maximum mode of load is selected in 96 planned manners a few days ago as basic mode, maintenance plan is put into operation base in equipment
The equipment that plinth mode does not put into operation all puts into operation, and calculates so as to form Load flow calculation data as calculation of short-circuit current and aid decision
Calculating data.
In the present embodiment, in the step 2 based on the short circuit current of each bus and route in calculating data carry out system
Calculation method is as follows:
Using the short-circuit current calculation method for being not based on trend, voltage source voltage is taken as 96 planned manner Load flow calculation knots a few days ago
Fruit median generatrix voltage max.
In the present embodiment, the synthesis of multiclass measure and multiple short circuit currents out-of-limit bus and route is considered in the step 4
Aid decision-making method is as follows:
Screen to the short circuit current sensibility of out-of-limit bus and route be greater than the control measure of threshold value as the out-of-limit bus and
Effective control measure are ranked up, wherein same priority by effective control measure of route according to the priority defined in advance
Inside is sorted according to short circuit current sensibility, effective control measure queue of each out-of-limit bus and route is obtained, according to control
Queue sequence successively increases control measure, obtains the control program set of out-of-limit bus and route.
Control program is carried out between each out-of-limit bus and the control program set of route enumerates combination, is considered
The synthesis aid decision control program set of multiclass measure and the out-of-limit bus of multiple short circuit currents and route, to the institute in the set
There is control program to carry out calculation of short-circuit current parallel using cluster Computing Platform, obtains the short circuit current meter under each control program
It calculates as a result, selection meets all short-circuiting device rupturing capacitys requirements and the smallest calculating knot of control cost in all calculated results
Fruit, then the corresponding control program of the result is method of operation adjustable strategies to be asked.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of limiting short-circuit current method of operation aid decision-making method, which comprises the steps of:
Step 1: based on generation schedule a few days ago, load prediction, maintenance plan data and the similar reactive voltage data shape for running day
At planned manner a few days ago Load flow calculation data and carry out Load flow calculation；
Step 2: the Load flow calculation data based on planned manner a few days ago form the calculating that calculation of short-circuit current and aid decision calculate
Data, and the calculation of short-circuit current based on each bus and route in the calculating data and calculation of tidal current carry out system；
Step 3: such as exist short circuit current be more than short-circuiting device rated rupturing capacity bus and route, then be transferred to step 4 carry out it is auxiliary
It helps decision to calculate, otherwise terminates this method；
Step 4: calculating highly resistance, stoppage in transit route, stoppage in transit generator, bus splitting and route the string operation control out of connecting that puts into operation
Measure accounts for multiclass measure and multiple short circuit currents based on sensitivity to the short circuit current sensibility of out-of-limit bus and route
The synthesis aid decision of out-of-limit bus and route simultaneously forms method of operation adjustable strategies；
Step 5: safety and stability check being carried out to the method for operation adjusted, exports operation if it can satisfy safety and stability and require
Mode adjustable strategies, otherwise directly terminate this method.
2. limiting short-circuit current method of operation aid decision-making method according to claim 1, which is characterized in that the step
1, specifically:
It is formed a few days ago based on generation schedule a few days ago, load prediction, maintenance plan data and the reactive voltage data of similar operation day
The Load flow calculation data of 96 planned manners simultaneously carry out Load flow calculation.
3. limiting short-circuit current method of operation aid decision-making method according to claim 1, which is characterized in that the step
It is as follows that the calculating data method that calculation of short-circuit current and aid decision calculate is formed in 2:
The maximum mode of load is selected in 96 planned manners a few days ago as basic mode, maintenance plan is put into operation base in equipment
The equipment that plinth mode does not put into operation all puts into operation, and calculates so as to form Load flow calculation data as calculation of short-circuit current and aid decision
Calculating data.
4. limiting short-circuit current method of operation aid decision-making method according to claim 1, which is characterized in that the step
It is as follows based on the short-circuit current calculation method of each bus and route in data carry out system is calculated in 2:
Using the short-circuit current calculation method for being not based on trend, voltage source voltage is taken as 96 planned manner Load flow calculation knots a few days ago
Fruit median generatrix voltage max.
5. limiting short-circuit current method of operation aid decision-making method according to claim 1, which is characterized in that the step
Consider that the synthesis aid decision-making method of multiclass measure and the out-of-limit bus of multiple short circuit currents and route is as follows in 4:
Screen to the short circuit current sensibility of out-of-limit bus and route be greater than the control measure of threshold value as the out-of-limit bus and
Effective control measure are ranked up, wherein same priority by effective control measure of route according to the priority defined in advance
Inside is sorted according to short circuit current sensibility, effective control measure queue of each out-of-limit bus and route is obtained, according to control
Queue sequence successively increases control measure, obtains the control program set of out-of-limit bus and route；
The combination of enumerating that control program is carried out between each out-of-limit bus and the control program set of route, obtains and considers multiclass
The synthesis aid decision control program set of measure and the out-of-limit bus of multiple short circuit currents and route, to all controls in the set
Scheme processed carries out calculation of short-circuit current using cluster Computing Platform parallel, obtains the calculation of short-circuit current knot under each control program
Fruit, selection meets all short-circuiting device rupturing capacitys and requires and control the smallest calculated result of cost in all calculated results, then
The corresponding control program of the result is method of operation adjustable strategies.
6. limiting short-circuit current method of operation aid decision-making method according to claim 1, which is characterized in that the safety
Stability check is checked using static and transient safe and stable.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383051A (en) * | 2020-11-12 | 2021-02-19 | 国网江苏省电力有限公司电力科学研究院 | Intelligent generation method for short-circuit current limiting measures |
| CN114069581A (en) * | 2021-11-19 | 2022-02-18 | 国家电网有限公司 | Power grid short-circuit current limiting method |
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| WO2013139392A1 (en) * | 2012-03-21 | 2013-09-26 | Abb Technology Ltd | Switching system for a dc grid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112383051A (en) * | 2020-11-12 | 2021-02-19 | 国网江苏省电力有限公司电力科学研究院 | Intelligent generation method for short-circuit current limiting measures |
| CN114069581A (en) * | 2021-11-19 | 2022-02-18 | 国家电网有限公司 | Power grid short-circuit current limiting method |
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