An optimization method for the transmission grid of hydropower clusters considering the long-term horizon

A grid optimization and clustering technology, applied in the power grid field, to achieve the effect of optimizing the design scheme, promoting sustainable development and good long-term adaptability

Active Publication Date: 2022-07-01
国家电网有限公司西南分部
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  • Application Information

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Problems solved by technology

[0025] The purpose of the present invention is to: provide a hydropower cluster sending network structure optimization method considering the long-term horizontal year, solve the long-term problem of the construction of the outgoing network structure under the background of the construction and development process of the leading reservoir, and establish a plan for the corresponding regional power balance The mathematical model is optimized according to the construction and operation of the transmission channel, the development plan of the hydropower station cluster and the timing of commissioning, and the greedy algorithm is used to solve the corresponding power transmission alternatives. Finally, the evaluation method of the entropy weight method is used to evaluate the Evaluate the selected schemes, and screen out the optimal scheme for hydropower cluster transmission and related grid construction

Method used

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  • An optimization method for the transmission grid of hydropower clusters considering the long-term horizon
  • An optimization method for the transmission grid of hydropower clusters considering the long-term horizon
  • An optimization method for the transmission grid of hydropower clusters considering the long-term horizon

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Embodiment 1

[0117] The preferred embodiment of the present invention provides a method for optimizing the transmission grid of a hydropower cluster considering the prospective level year, figure 1 On the basis of , establish the relevant mathematical model of power and electricity balance and analyze and solve it, obtain the outbound channel scheme library of hydropower cluster, and use the entropy weight method to further screen the alternative library of power transmission scheme, and finally obtain a database that satisfies the safety and stability constraints, Strengthening scheme for sending out grids of hydropower clusters with serious fault checking and channel constraints.

[0118] (1) Set the installed capacity of each power source of the hydropower group in a certain hydropower-enriched area in a flat water year and the expected output P under the joint operation after the connection of the leading reservoir G As shown in Table 1 - the installed capacity and output parameters o...

Embodiment 2

[0138] In this example, on the basis of Example 1, it is further assumed that the load in the hydropower-enriched area increases at a rate of 3% per year, and on the basis of Table 2, the full year of 2020, 2025, 2030 and 2035 in this area is obtained by calculation. Power consumption P D As shown in Table 6 - Annual Electricity Consumption in a Region from 2020 to 2035:

[0139] Table 6 (Unit: MW)

[0140]

[0141] 1) The horizontal prospect year is 2025: in the case that the load increases in 2025 and the installed capacity of each cascade power station remains unchanged, check whether the six power delivery schemes shown in Table 5 still meet the safety and stability constraints and check for serious faults and hard constraints such as channel constraints. The verification results show that the scheme 1, scheme 2, scheme 3 and scheme 4 no longer meet the relevant inspection standards. Therefore, it is necessary to re-establish the channel delivery scheme of the partiti...

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Abstract

The invention discloses an optimization method for the transmission grid frame of a hydropower cluster considering a long-term level year, pre-setting constraint hard indicators and evaluative soft indicators, establishing an adaptive analysis index system, and pre-setting alternative power transmission schemes from the hydropower cluster to the load center library. According to the annual power supply and load level of the prospective level, a strengthening plan is proposed for the delivery plan. After the Longtou Reservoir is put into operation, will the strengthening plan meet the annual power transmission demand at the prospective level? If go to the next step. Does it satisfy the system security and stability constraints? If yes, go to the next step. Can it pass the critical failure check? If yes, go to the next step. Whether the channel constraints are met, and the channel constraints mainly consider the impact of ecological red lines such as nature reserves and virgin forests on the path and width of the transmission corridor? If not, go to the next step. Form a plan for sending out hydropower clusters.

Description

technical field [0001] The invention belongs to the field of power grids, and relates to a method for optimizing the transmission grid frame of a hydropower cluster considering a prospective level year. Background technique [0002] At present, domestic research on cascade hydropower has been carried out initially, but the research mainly focuses on various coordination and optimization scheduling methods during the operation of cascade hydropower. [0003] Patent [1] proposes a scheduling method of cascade hydropower "virtual pumped-storage power station", with the minimum deviation between actual and target peak shaving power and the minimum water consumption of cascade hydropower as the scheduling goals, to construct cascade hydropower "virtual pumped-storage power station" scheduling. The objective function is used to solve the optimal scheduling, in order to realize the short-term scheduling plan of the power system; [0004] Patent [2] discloses an adaptive optimizati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06393G06Q50/06Y04S10/50
Inventor 路亮江栗魏明奎周泓
Owner 国家电网有限公司西南分部
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