CN107798427A - Extensive Energy Base extra-high voltage electric power sends out the construction method of electric network composition scheme - Google Patents
Extensive Energy Base extra-high voltage electric power sends out the construction method of electric network composition scheme Download PDFInfo
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- CN107798427A CN107798427A CN201710967229.6A CN201710967229A CN107798427A CN 107798427 A CN107798427 A CN 107798427A CN 201710967229 A CN201710967229 A CN 201710967229A CN 107798427 A CN107798427 A CN 107798427A
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- 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
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- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
- G06Q10/06315—Needs-based resource requirements planning or analysis
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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 the construction method that a kind of extensive Energy Base extra-high voltage electric power sends out electric network composition scheme, comprise the following steps：1) build extensive Energy Base extra-high voltage electric power and send out power network initial model；2) capability value of 23 DC back to back is determined；3) the exchange synchronizing point of 23 DC back to back is determined；4) some grid plan modifications are obtained, then using each grid plan modification as primary election scheme constructses primary election scheme collection；5) Electrical is carried out to each grid plan modification；6) when being unsatisfactory for preset requirement, then concentrated from primary election scheme and delete the grid plan modification；7) when primary election scheme integrates as empty set after step 6) processing, then step 2) is gone to；Otherwise, then step 8) is gone to；8) economic analysis is carried out to each grid plan modification that primary election scheme is concentrated；9) optimum programming rack is chosen according to the multiple objective optimization model, this method can comprehensive electrical performance and economy realize the structure of electric network composition scheme.
Description
Technical field
The invention belongs to power network development and planning field, is related to a kind of extensive Energy Base extra-high voltage electric power and sends out power network
The construction method of organization plan.
Background technology
China's energy resources distributed pole is unbalanced, the whole nation can hydroelectric resource development nearly 2/3rds be distributed in western part Sichuan,
Yunnan, Tibet San Sheng (area), coal reserves nearly 2/3rds concentrate on China the north, the Shanxi of the northwestward, the Inner Mongol,
Shaanxi San Sheng (area), form large-scale Hydropower Base and coal-electricity base.China's energy resources distribution is with economic development in reverse point
The layout of cloth, determine the energy and the trans-regional certainty flowed on a large scale of electric power.The conveying capacity of supertension line can be by
The limitation of the stabilization of power grids level, load level, fed distance.When completing long range, large capacity transmission by supertension line, this
The conveying capacity of a little power transmission lines depends primarily on the stability limit of circuit, and centre lacks enough power supply supports and can caused again over long distances
The stability limit of power transmission line is generally relatively low, also can bring restriction to the conveying capacity of supertension line.Therefore, for extensive coal
For the Large Copacity in electric base, long-distance sand transport, delivery requirements may not be met only with supertension line.
Extra high voltage line has the characteristics of voltage class is high, transmission distance is long, power transmission capacity is big, after extra high voltage line puts into operation
Passway for transmitting electricity is added, and strengthens grid structure, the maintenance level of transmission cross-section can be significantly improved, ensures the electric power in area
Supply, improve the ability of network optimization configuration resource.Meanwhile after grid collapses, extra-high voltage grid can strengthen power network
Power flow transfer ability, the ability that the impact of multiple catastrophe failure occurs for resisting power network also will substantially strengthen, extra-high voltage grid
It is the energy, the important and effective approach of air conservation using cleaning.
Extra-high voltage project is built up put into operation after, the mutual contact mode of ultra-high voltage transformer station and original sending end supergrid is to power network
Short circuit current level, transient stability, the ability to transmit electricity of sending section outside can all bring a certain degree of influence.Built in extra-high voltage
If initial stage, network is not yet formed, and ultra-high voltage transformer station interconnects with sending end supergrid according to alternating current circuit, then may
Original sending end grid short circuit levels of current is caused to exceed switch rupturing capacity, it is also possible to which it is unfavorable to be brought to sending end power network ability to send outside
Influence；If ultra-high voltage transformer station does not interconnect with sending end supergrid, voltage support ability is weaker, and there is also temporary steady ability is weaker
Energy Base electric power is caused to send out limited possibility.
With the development of extra-high voltage grid, the extensive remote conveying power network of extra-high voltage alternating current-direct current series-parallel connection also gradually forms, electricity
Power is sent, complex electric network composition will be gradually formed by both ends, and faces multiple technologies problem.Extensive Energy Base is special
High-tension electricity sends out making rational planning for for electric network composition, how to avoid short circuit current from exceeding breaking capacity and the raising of relative breaker
Send ability to transmit electricity outside, be the problem for needing in the sending end Electric Power Network Planning stage to solve, while consideration electricity is should also be as in the Electric Power Network Planning stage
The economy of net, it is therefore desirable to design a kind of structure side for the electric network composition scheme for considering electric property and economy
Method.
The content of the invention
A kind of the shortcomings that it is an object of the invention to overcome above-mentioned prior art, there is provided extensive Energy Base extra-high voltage
Electric power sends out the construction method of electric network composition scheme, this method can comprehensive electrical performance and economy realize electric network composition scheme
Structure.
To reach above-mentioned purpose, extensive Energy Base extra-high voltage electric power of the present invention sends out electric network composition scheme
Construction method comprises the following steps：
1) build extensive Energy Base extra-high voltage electric power and send out power network initial model；
2) balance of electric power and ener analysis is carried out according to sending end electric network source and load development plan, determines the richness of sending end power network
Abundant electric power sends out demand, then sends out demand, DC back to back engineering system, complete sets of equipment according to the rich electric power of sending end power network
Design and the horizontal capability value for determining 2-3 DC back to back of device manufacturing process；
3) determine that 2-3 direct current leans against according to the construction sequential of the planning of the power grid construction of sending end power network and Ultra-high Voltage Substations
The exchange synchronizing point of the back of the body；
4) the 2-3 direct current that the capability value of the 2-3 DC back to back determined according to step 2) and step 3) determine leans against
The exchange synchronizing point of the back of the body, carried out by DC back to back current conversion station and the different ultrahigh-voltage alternating-current drop points of different capabilities mutual
Connection, obtains some grid plan modifications, then using each grid plan modification as primary election scheme constructses primary election scheme collection；
5) each grid plan modification concentrated to the primary election scheme of step 4) structure carries out Electrical；
6) judge that primary election scheme concentrates whether the electric property of each grid plan modification meets preset requirement, when any grid plan modification
Electric energy performance when being unsatisfactory for preset requirement, then concentrated from primary election scheme and delete the grid plan modification；
7) judge that whether primary election scheme integrates as empty set after step 6) processing, when primary election scheme collection is after step 6) processing
During empty set, then step 2) is gone to；Primary election scheme integrates not as empty set after step 6) is handled, then goes to step 8)；
8) economic analysis is carried out to each grid plan modification that primary election scheme is concentrated；
9) multiple objective optimization model of the structure using electric network performance and economy as index, then according to the multiple target
Optimum programming rack is chosen in each grid plan modification that Optimal Planning Model is concentrated from primary election scheme, then by the optimum programming net
Frame sends out electric network composition scheme as extensive Energy Base extra-high voltage electric power.
The concrete operations of step 1) are：According to planning level year ultra-high voltage transformer station, extra-high voltage transformer supporting power supply,
The construction operation information of sending end Net Frame of Electric Network and generating set, with substation capacity, short circuit current level, circuit transmission capacity and
Power Network Transient Stability is constraints, is believed according to the data of generator in power network, load, balance nodes, transformer and circuit
Breath builds extensive Energy Base extra-high voltage electric power and sends out power network initial model.
The concrete operations of step 5) are：Each grid plan modification concentrated to the primary election scheme of step 4) structure carries out static security
Property analysis, short circuit current level assess, the analysis of trend distribution character, transient stability specificity analysis and sending end transmitting capacity of the electric wire netting point
Analysis.
The concrete operations of step 8) are：Calculate primary election scheme and concentrate the engineering construction gross investment of each grid plan modification, operation and maintenance expenses
With, investment payback time and power transmission engineering economy.
The concrete operations of step 6) are：Judge that primary election scheme concentrates the static security of each grid plan modification, short circuit current water
Whether flat, trend distribution character, transient stability characteristic and sending end transmitting capacity of the electric wire netting all meet preset requirement, when any one
Static security, short circuit current level, trend distribution character, transient stability characteristic and the sending end transmitting capacity of the electric wire netting of grid plan modification
It is not all of meeting preset requirement, then is concentrated from primary election scheme and delete the grid plan modification.
The concrete operations using electric network performance and economy as the multiple objective optimization model of index are built in step 9) is：
By assigning weight to electric network performance and economy to build multiple objective optimization model.
The invention has the advantages that：
Extensive Energy Base extra-high voltage electric power of the present invention sends out the construction method of electric network composition scheme specific
During operation, demand, DC back to back engineering system, complete sets of equipment design and equipment system are sent out according to the rich electric power of sending end power network
The capability value that technological level determines 2-3 DC back to back is made, further according to the power grid construction planning of sending end power network and superelevation buckling
The construction sequential in power station determines the exchange synchronizing point of 2-3 DC back to back, so as to form some grid plan modifications, and to each rule
Draw rack and carry out Electrical, delete the undesirable grid plan modification of electric property, then each grid plan modification is entered again
Row economic analysis, and multiple objective optimization model is built as index using power network electric property and economy, to select most
Excellent grid plan modification, avoid the grid plan modification electric property that selects undesirable.In addition, it is necessary to explanation, the present invention
In interconnected by the DC back to back current conversion station of different capabilities from different ultrahigh-voltage alternating-current drop points, avoid grid plan modification pair
The adverse effect that the short circuit current level of original sending end power network is brought, control is more flexible, can be applied to multiple scenes and more
The kind method of operation.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is that the electric network composition scheme that extra-high voltage is interconnected by DC back to back with sending end supergrid in the present invention is shown
It is intended to；
Fig. 3 is that sending end power network extra-high voltage electric power sends out electric network composition scheme schematic diagram.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, extensive Energy Base extra-high voltage electric power of the present invention sends out the structure side of electric network composition scheme
Method comprises the following steps：
1) build extensive Energy Base extra-high voltage electric power and send out power network initial model；
The concrete operations of step 1) are：According to planning level year ultra-high voltage transformer station, extra-high voltage transformer supporting power supply,
The construction operation information of sending end Net Frame of Electric Network and generating set, with substation capacity, short circuit current level, circuit transmission capacity and
Power Network Transient Stability is constraints, is believed according to the data of generator in power network, load, balance nodes, transformer and circuit
Breath builds extensive Energy Base extra-high voltage electric power and sends out power network initial model.
2) balance of electric power and ener analysis is carried out according to sending end electric network source and load development plan, determines the richness of sending end power network
Abundant electric power sends out demand, then sends out demand, DC back to back engineering system, complete sets of equipment according to the rich electric power of sending end power network
Design and the horizontal capability value for determining 2-3 DC back to back of device manufacturing process；
3) determine that 2-3 direct current leans against according to the construction sequential of the planning of the power grid construction of sending end power network and Ultra-high Voltage Substations
The exchange synchronizing point of the back of the body；
4) the 2-3 direct current that the capability value of the 2-3 DC back to back determined according to step 2) and step 3) determine leans against
The exchange synchronizing point of the back of the body, carried out by DC back to back current conversion station and the different ultrahigh-voltage alternating-current drop points of different capabilities mutual
Connection, obtains some grid plan modifications, then using each grid plan modification as primary election scheme constructses primary election scheme collection；
5) each grid plan modification concentrated to the primary election scheme of step 4) structure carries out Electrical；
The concrete operations of step 5) are：Each grid plan modification concentrated to the primary election scheme of step 4) structure carries out static security
Property analysis, short circuit current level assess, the analysis of trend distribution character, transient stability specificity analysis and sending end transmitting capacity of the electric wire netting point
Analysis.
6) judge that primary election scheme concentrates whether the electric property of each grid plan modification meets preset requirement, when any grid plan modification
Electric energy performance when being unsatisfactory for preset requirement, then concentrated from primary election scheme and delete the grid plan modification；
The concrete operations of step 6) are：Judge that primary election scheme concentrates the static security of each grid plan modification, short circuit current water
Whether flat, trend distribution character, transient stability characteristic and sending end transmitting capacity of the electric wire netting all meet preset requirement, when any one
Static security, short circuit current level, trend distribution character, transient stability characteristic and the sending end transmitting capacity of the electric wire netting of grid plan modification
It is not all of meeting preset requirement, then is concentrated from primary election scheme and delete the grid plan modification.
7) judge that whether primary election scheme integrates as empty set after step 6) processing, when primary election scheme collection is after step 6) processing
During empty set, then step 2) is gone to；Primary election scheme integrates not as empty set after step 6) is handled, then goes to step 8)；
8) economic analysis is carried out to each grid plan modification that primary election scheme is concentrated；
The concrete operations of step 8) are：Calculate primary election scheme and concentrate the engineering construction gross investment of each grid plan modification, operation and maintenance expenses
With, investment payback time and power transmission engineering economy.
9) multiple objective optimization model of the structure using electric network performance and economy as index, then according to the multiple target
Optimum programming rack is chosen in each grid plan modification that Optimal Planning Model is concentrated from primary election scheme, then by the optimum programming net
Frame sends out electric network composition scheme as extensive Energy Base extra-high voltage electric power.
The concrete operations using electric network performance and economy as the multiple objective optimization model of index are built in step 9) is：
By assigning weight to electric network performance and economy to build multiple objective optimization model.
In Fig. 2, ABCDEFH is 1000kV transformer stations, and A and B represent the extra-high voltage station of sending end power network, and C is intermediate stations, D
An extra-high voltage station of receiving end power network is represented, A1, B1 and C1 are Ultra-high Voltage Substations, and G1-G9 is generating set, and T1-T9 is change
Depressor, L are to be interconnected by end load, ultra-high voltage transformer station B and Ultra-high Voltage Substations B1 by DC back to back.
Embodiment one
According to the project report of certain sending end power network, the extra-high voltage grid construction progress and sending end superelevation in research level year are specified
The generator start-up of voltage electric grid, the rich electric power of the sending end power network is primarily determined that by balance of electric power and ener, and then tentatively
The capacity for setting DC back to back is respectively 1000MW and 1500MW.According to super-pressure sending end Net Frame of Electric Network construction plan and consider
The sustainability of programme, the Ultra-high Voltage Substations A or E in Fig. 3 can just be elected as by determining the exchange drop point of DC back to back, by
This, it is as follows can to build extensive Energy Base extra-high voltage electric power submitting electric network composition scheme collection：
Scheme one：DC back to back capacity is 1000MW, and DC back to back exchange drop point is transformer station A；
Scheme two：DC back to back capacity is 1000MW, and DC back to back exchange drop point is transformer station E；
Scheme three：DC back to back capacity is 1500MW, and DC back to back exchange drop point is transformer station A；
Scheme four：DC back to back capacity is 1500MW, and DC back to back exchange drop point is transformer station E.
Static security analysis is carried out to scheme one to scheme four, short circuit current level is analyzed, transient stability is checked, is sent outside
Ability to transmit electricity is analyzed, and the economy of each scheme is assessed, and the results are shown in Table 1.
Table 1
Using multiple attributive decision making method, programme is ranked up, show that the good and bad degree of each programme is ordered as
F3 ＞ F4 ＞ F1 ＞ F2, symbol ' ＞ ' represent " being better than ", then optimum programming scheme is scheme three, i.e. DC back to back capacity is
1500MW, the programme that DC back to back exchange drop point is transformer station A.
Claims (6)
1. a kind of extensive Energy Base extra-high voltage electric power sends out the construction method of electric network composition scheme, it is characterised in that including
Following steps：
1) build extensive Energy Base extra-high voltage electric power and send out power network initial model；
2) balance of electric power and ener analysis is carried out according to sending end electric network source and load development plan, determines the affluence electricity of sending end power network
Power sends out demand, then sends out demand, DC back to back engineering system, complete sets of equipment according to the rich electric power of sending end power network and designs
And the horizontal capability value for determining 2-3 DC back to back of device manufacturing process；
3) 2-3 DC back to back is determined according to the construction sequential of the planning of the power grid construction of sending end power network and Ultra-high Voltage Substations
Exchange synchronizing point；
4) capability value of the 2-3 DC back to back determined according to step 2) and 2-3 DC back to back of step 3) determination
Synchronizing point is exchanged, is interconnected, obtained from different ultrahigh-voltage alternating-current drop points by the DC back to back current conversion station of different capabilities
Some grid plan modifications, then using each grid plan modification as primary election scheme constructses primary election scheme collection；
5) each grid plan modification concentrated to the primary election scheme of step 4) structure carries out Electrical；
6) judge that primary election scheme concentrates whether the electric property of each grid plan modification meets preset requirement, when the electricity of any grid plan modification
When energy performance is unsatisfactory for preset requirement, is then concentrated from primary election scheme and delete the grid plan modification；
7) judge that whether primary election scheme integrates as empty set after step 6) processing, when primary election scheme integrates as empty set after step 6) processing
When, then go to step 2)；Primary election scheme integrates not as empty set after step 6) is handled, then goes to step 8)；
8) economic analysis is carried out to each grid plan modification that primary election scheme is concentrated；
9) multiple objective optimization model of the structure using electric network performance and economy as index, then according to the multiple-objection optimization
Optimum programming rack is chosen in each grid plan modification that plan model is concentrated from primary election scheme, then makees the optimum programming rack
Electric network composition scheme is sent out for extensive Energy Base extra-high voltage electric power.
2. extensive Energy Base extra-high voltage electric power according to claim 1 sends out the construction method of electric network composition scheme,
Characterized in that, the concrete operations of step 1) are：According to planning level year ultra-high voltage transformer station, the supporting electricity of extra-high voltage transformer
The construction operation information in source, sending end Net Frame of Electric Network and generating set, held with substation capacity, short circuit current level, circuit conveying
Amount and Power Network Transient Stability are constraints, according to the number of generator in power network, load, balance nodes, transformer and circuit
Power network initial model is sent out according to the extensive Energy Base extra-high voltage electric power of information architecture.
3. extensive Energy Base extra-high voltage electric power according to claim 1 sends out the construction method of electric network composition scheme,
Characterized in that, the concrete operations of step 5) are：Each grid plan modification concentrated to the primary election scheme of step 4) structure carries out static
Safety analysis, short circuit current level assessment, the analysis of trend distribution character, transient stability specificity analysis and sending end grid power transmission energy
Power is analyzed.
4. extensive Energy Base extra-high voltage electric power according to claim 1 sends out the construction method of electric network composition scheme,
Characterized in that, the concrete operations of step 8) are：Calculate primary election scheme and concentrate the engineering construction gross investment of each grid plan modification, O＆M
Expense, investment payback time and power transmission engineering economy.
5. extensive Energy Base extra-high voltage electric power according to claim 3 sends out the construction method of electric network composition scheme,
Characterized in that, the concrete operations of step 6) are：Judge that primary election scheme concentrates the static security of each grid plan modification, short circuit current
Whether level, trend distribution character, transient stability characteristic and sending end transmitting capacity of the electric wire netting all meet preset requirement, when any one
Static security, short circuit current level, trend distribution character, transient stability characteristic and the sending end grid power transmission energy of individual grid plan modification
Power is not all of meeting preset requirement, then is concentrated from primary election scheme and delete the grid plan modification.
6. extensive Energy Base extra-high voltage electric power according to claim 3 sends out the construction method of electric network composition scheme,
Characterized in that, concrete operations of the structure using electric network performance and economy as the multiple objective optimization model of index in step 9)
For：By assigning weight to electric network performance and economy to build multiple objective optimization model.
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Cited By (4)
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| CN109190801A (en) * | 2018-08-10 | 2019-01-11 | 中国电力科学研究院有限公司 | A kind of preferred integrated approach and system of extra-high voltage sending end electric network composition scheme |
| CN111327045A (en) * | 2018-12-13 | 2020-06-23 | 国网新疆电力有限公司乌鲁木齐供电公司 | Real-time power flow-based intelligent mode arrangement and risk analysis method |
| CN112417628A (en) * | 2020-11-23 | 2021-02-26 | 中国能源建设集团浙江省电力设计院有限公司 | Construction method of typical grid frame of extra-high voltage power grid |
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| CN109190801A (en) * | 2018-08-10 | 2019-01-11 | 中国电力科学研究院有限公司 | A kind of preferred integrated approach and system of extra-high voltage sending end electric network composition scheme |
| CN111327045A (en) * | 2018-12-13 | 2020-06-23 | 国网新疆电力有限公司乌鲁木齐供电公司 | Real-time power flow-based intelligent mode arrangement and risk analysis method |
| CN112417628A (en) * | 2020-11-23 | 2021-02-26 | 中国能源建设集团浙江省电力设计院有限公司 | Construction method of typical grid frame of extra-high voltage power grid |
| CN113852136A (en) * | 2021-09-24 | 2021-12-28 | 广东电网有限责任公司 | Power supply configuration method and device for new energy base delivery scheme |
| CN113852136B (en) * | 2021-09-24 | 2023-07-25 | 广东电网有限责任公司 | Power supply configuration method and device for new energy base delivery scheme |
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