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Power grid multisource peak shaving method based on multistage dynamic programming

A dynamic programming, multi-stage technology, applied in the direction of single-network parallel feeding arrangement, instrumentation, data processing applications, etc., can solve problems such as low convergence rate, complex model, difficult solution, etc., to simplify calculation, improve effectiveness and practicality performance, optimization goals and clear results

Active Publication Date: 2015-04-01
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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  • Power grid multisource peak shaving method based on multistage dynamic programming
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  • Power grid multisource peak shaving method based on multistage dynamic programming

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Embodiment Construction

[0029] The following describes the implementation of the present invention in further detail with reference to the drawings and examples.

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

[0031] It includes the following steps:

[0032] Step 1) Obtain the equivalent daily load curve according to the actual operation of the power 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) Taking the lowest operating cost of the system within on...

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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 power grid multi-source peak shaving method based on multi-stage dynamic planning, 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 increase in the 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. The demand for nuclear power units to participate in the peak-shaving of the power grid is increasing, and the ramp rate of traditional units is often not enough. The large and short-term power fluctuation requirements caused by renewable energy, the joint operation and coordinated control of various power sources have become a key issue in the operation of modern power grids, and...

Claims

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Application Information

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Patent Type & Authority Applications(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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