Determined 2-layered planning model based transmission network planning method

A technology for planning models and transmission networks, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as the contradiction between economy and reliability, and achieve the effect of improving efficiency and clarifying the solution process

Inactive Publication Date: 2008-05-14
上海善业光电科技有限公司
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Problems solved by technology

However, the multi-level programming model has not been applied to the research of transmission network planning at present. It is a new research topic of transmissio

Method used

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  • Determined 2-layered planning model based transmission network planning method
  • Determined 2-layered planning model based transmission network planning method
  • Determined 2-layered planning model based transmission network planning method

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Embodiment

[0021] Transmission network planning is an important part of power system planning and development. The present invention takes an 18-node system as an example to analyze an example. 18-node system data reference (Wang Xifan. Power System Optimal Planning [M]. Beijing: Water Conservancy and Electric Power Press, 1990), in order to make the planning results meet the safety criteria, it is assumed that all line corridors have 3 lines that can be expanded. For the convenience of description, it is assumed that the unit price of the line is 1 million yuan / (km. return). The specific implementation steps are as follows:

[0022] 1) Establish a two-level planning model of the transmission network; when modeling, the minimum investment cost of the transmission network is taken as the economic goal, and the minimum system load shedding of the transmission system under basic operating conditions and single-fault operating conditions is taken as the reliability goal; the lower layer Th...

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Abstract

The invention relates to a method for programming a transmission network based on a determinacy two-layer programming mode. The programming mode takes a transmission network investment cost as an economy target, and takes load shedding sum of a regular operation and a single fault operation of the system as a reliability target. An underlayer target is the reliability target; an underlayer restriction is an operation restriction of the regular operation and the single fault condition of the system; an upperlayer gives priority to the economy target; the underlayer reliability target is added to the upperlayer target in a way of penalty function, and the upperlayer restriction is an awaiting frame line number restriction. An improved arithmetic mixed with a niche genetic algorithm with a primal-dual interior method together is adopted to calculate the mode; the niche genetic algorithm is used for processing a integer variable of the upperlayer programming and has a global optimization; the primal-dual interior method is adopted to have a quick calculation to improve the arithmetic speed and a convergence. The invention is able to add the reliability issue to the economy programming in a restriction way and realize an economy optimization of the programming proposal under a high reliability condition.

Description

technical field [0001] The invention relates to a transmission network planning method based on a deterministic two-layer programming model, which is used for the research on transmission network planning in power system planning and belongs to the technical field of electrical engineering. Background technique [0002] Traditional transmission network planning is generally based on power planning and load forecasting for a given future level year, and according to the existing grid structure, a reasonable selection of new transmission lines is required to ensure safe, reliable, and economical operation of the transmission system. For the optimal planning scheme of the transmission network, it is generally to meet the needs of load growth and various conventional operation constraints, and to pursue the minimum construction cost of the transmission network. Various planning schemes can meet the demand of load growth, but they have different requirements for system reliabilit...

Claims

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Application Information

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IPC IPC(8): H02J3/00G06F17/00G06F17/50
CPCY02E60/76Y04S40/22Y02E60/00
Inventor 程浩忠范宏
Owner 上海善业光电科技有限公司
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