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Determined 2-layered planning model based transmission network planning method

A planning model and transmission network technology, applied in 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: 2009-09-16
上海善业光电科技有限公司
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  • Application Information

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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 transmission network planning to use the multi-level programming modeling method to deal with the contradiction between economy and reliability in transmission network planning.

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 transmission network planning method based on a deterministic two-layer planning model. The planning model takes the investment cost of the power grid as an economical target, and takes the sum of load shedding of the system under normal and single-fault operation conditions as a reliability target. The lower-level goal is the reliability goal, and the lower-level constraints are the normal operation constraints of the system and the operation constraints under single-fault conditions; the upper-level objectives are mainly economical objectives, and the lower-level reliability objectives are added in the form of penalty functions, and the upper-level constraints are the lines to be erected Quantity constraints. The hybrid algorithm combining the improved niche genetic algorithm and the primal-dual interior point method is used to solve the model, and the niche genetic algorithm is used to process the integer variables of the upper-level planning for global optimization; the lower-level planning is carried out using the primal-dual interior point algorithm. Fast solution, improve algorithm speed and convergence. The invention adds the reliability problem into the economical planning with constraints, and realizes the optimal economical efficiency of the planning scheme under the condition of high reliability.

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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Patent Type & Authority Patents(China)
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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