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A multi-source peak-shaving method for power grid based on multi-stage dynamic programming

A dynamic programming, multi-stage technology, applied to the multi-stage dynamic peak regulation optimization of pumped storage units, nuclear power, including hydropower, and thermal power fields, can solve problems such as complex models, low convergence rates, and difficult solutions, achieving simplified calculations, Improve effectiveness and practicality, optimize the effect of clear goals

Active Publication Date: 2017-06-16
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0006] (3) In terms of constraints, usually on the basis of active power balance, it mainly considers the operating characteristics of various generating units, the constraints of safe and stable operation of the power grid, and actual engineering constraints. low level problem

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  • A multi-source peak-shaving method for power grid based on multi-stage dynamic programming
  • A multi-source peak-shaving method for power grid based on multi-stage dynamic programming
  • A multi-source peak-shaving method for power grid based on multi-stage dynamic programming

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Embodiment Construction

[0029] The implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and examples.

[0030] A multi-source peak-shaving method based on multi-stage dynamic planning. For the joint peak-shaving operation of multiple power sources in the power system, a multi-stage dynamic programming model within one day is established. On the basis of active power balance, combined with various types of power generation Unit operation constraints and power grid operation constraints; ant colony algorithm is used to solve the multi-source optimal peak-shaving scheme;

[0031] Include the following steps:

[0032] Step 1) Obtain the equivalent daily load curve according to the actual operation of the grid and the operating characteristics of various power sources in the grid;

[0033] Step 2) Calculate the peak-shaving cost per unit capacity of each peak-shaving unit;

[0034] Step 3) take the minimum operating cost of the s...

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Abstract

The invention discloses a power grid multisource peak shaving method based on multistage dynamic programming. The method is to create a multistage dynamic programming model within one day when multiple power supplies are combined to operate in a peak shaving manner in a power system, and comprises the following steps: Step 1) obtaining an equivalent daily load curve according to the actual running situation of the power grid and the multiple power supplies running characteristics in the power grid; Step 2) calculating peak shaving cost per unit capacity for each of peak shaving units; Step 3) using the lowest running cost within one day of the system as an optimization objective, and creating a multistage dynamic programming objective function; Step 4) according to the actual running state of the power system, listing power grid running constraint conditions, and according to the running characteristics of each of generator sets, listing multi-power-supply constraint conditions; Step 5) applying an ant colony algorithm to solve the objective function in the Step 3), so as to obtain the optimal multisource peak shaving load distribution scheme. The power grid multisource peak shaving method meets the actual power grid running requirements and uses the ant colony algorithm to perform global search solving, so as to ensure the algorithm to be more practical.

Description

technical field [0001] The invention belongs to the technical field of power system operation and optimization, and specifically relates to a multi-source peak-shaving method for power grids based on multi-stage dynamic programming, in particular to a multi-stage dynamic peak-shaving optimization including hydropower, thermal power, nuclear power, and pumped storage units method. Background technique [0002] With the increasing proportion of nuclear power in the power grid and the increasing peak-to-valley difference in load, the peak-shaving situation of the power system is becoming more and more severe, and the demand for nuclear power units to participate in the peak-shaving of the power grid is increasing. The large and short-term power fluctuation requirements brought by renewable energy, the joint operation and coordinated control of various power sources have become the key issues in the operation of modern power grids, and are necessary means to ensure safe, stable ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/46G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06H02J3/38H02J3/46
Inventor 张涛朱钰马晓东邵宝珠孙峰张强程绪可曾辉叶鹏
Owner STATE GRID CORP OF CHINA
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