Hydropower cluster sending-out net rack optimization method considering distant view level year

A grid optimization, hydropower technology, applied in the field of power grid

Active Publication Date: 2020-09-01
国家电网有限公司西南分部
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  • Abstract
  • Description
  • Claims
  • 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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  • Hydropower cluster sending-out net rack optimization method considering distant view level year
  • Hydropower cluster sending-out net rack optimization method considering distant view level year
  • Hydropower cluster sending-out net rack optimization method considering distant view level year

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Embodiment 1

[0117] The preferred embodiment of the present invention provides an optimization method for hydropower cluster sending grids considering the horizon year, figure 1 On the basis of , establish the relevant mathematical model of electric power balance and analyze and solve it to obtain the outgoing channel scheme library of the hydropower cluster, and use the entropy weight method to further screen the alternative scheme library, and finally obtain the The strengthening scheme of the sending grid of hydropower clusters with check and channel constraints.

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

[0119] Table 1 (unit: MW)

[0120]

[0121] The annual electricity consumpt...

Embodiment 2

[0138] In this example, on the basis of Example 1, it is further assumed that the load in the hydropower-rich area is increasing at a rate of 3% per year, and the full-year performance of the area in 2020, 2025, 2030, and 2035 is obtained by calculation on the basis of Table 2. 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 vision year is 2025: under the condition that the load increases and the installed capacity of each cascade power station remains unchanged in 2025, check whether the six power delivery schemes shown in Table 5 still meet the safety and stability constraints and the serious fault check Hard constraints such as channel constraints. The verification results show that 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 outbound scheme for pow...

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Abstract

The invention discloses a hydropower cluster sending-out net rack optimization method considering a distant view level year, and the method comprises the steps: presetting a constraint hard index andan evaluation soft index, building an adaptability analysis index system, and presetting a power transmission scheme alternative library from a hydropower cluster to a load center; according to the power supply and load level of the distant view level year, formulating a scheme, providing an enhancement scheme. After the leading reservoir is put into production, whether the enhancement scheme meets the long-range horizontal annual power transmission requirement or not is judged; if so, the next step is executed. Whether system security and stability constraints are met or not is judged; if yes, the next step is executed. Whether severe faults can be passed or not is judged; if yes, the next step is executed. Whether channel constraints are met or not is judged, and the channel constraintsmainly consider the influence of ecological red lines such as natural reserve areas and original forests on the path and width of the power transmission corridor. If not, the next step is executed. And a hydropower cluster sending scheme is formed.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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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