Energy-saving power generation dispatching optimization method based on direct current power flow

A technology of DC power flow and optimization method, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of low calculation speed, unable to meet the accuracy and speed requirements of large-scale power grids, and not suitable for large-scale power networks, etc. Effects that meet precision and speed requirements

Active Publication Date: 2011-03-23
EAST CHINA ELECTRIC POWER TEST & RES INST +1
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Problems solved by technology

[0007] However, the calculation speed of the above method is not high, which cannot meet the accuracy and speed requirements of large-scale power grid calculations, and is not suitable for large-scale power networks.

Method used

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  • Energy-saving power generation dispatching optimization method based on direct current power flow
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  • Energy-saving power generation dispatching optimization method based on direct current power flow

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Embodiment Construction

[0023] Attached below figure 2 A preferred embodiment of the present invention will be described in detail.

[0024] figure 1 The flow of the energy-saving scheduling method in the prior art is shown. see figure 2 , the present invention uses a genetic algorithm for optimization, and performs cyclic iterations in the manner of unit combination optimization first, then DC power flow optimization, and finally cow-pull power flow optimization, and then obtains the optimal solution for energy-saving scheduling.

[0025] According to a kind of energy-saving generation scheduling optimization method based on direct current flow of the present invention, comprise the following steps:

[0026] 1. According to the requirements of energy-saving scheduling, arrange the start-stop mode and output level of non-coal-fired units.

[0027] 2. For all coal-fired units, randomly arrange the start-stop mode and output level of the units to form a feasible initial population.

[0028] 3. C...

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Abstract

The invention relates to an energy-saving power generation dispatching optimization method based on direct current power flow. The method comprises the following steps: arranging the start-stop modes and output levels of non-coal burning units and all coal burning units according to the energy-saving dispatching requirement, and forming a feasible initial population; carrying out iterative optimization of unit combinations; selecting a plurality of better solutions, and randomly generating a plurality of feasible solutions; solving a power balance equation by a direct current power flow method, and carrying out iterative optimization of the direct current power flow; selecting a plurality of better solutions, and randomly generating a plurality of feasible solutions; solving the power balance equation by a newton-raphson power flow method, carrying out iterative optimization of the power flow, and optimizing the start-stop modes and output levels of the units; and finally selecting the optimum solution. In the invention, a genetic algorithm is adopted for carrying out optimization, and cyclic iteration is carried out by sequentially carrying out optimization of the unit combinations, optimization of the direct current power flow and optimization of the newton-raphson power flow, thus the optimum solution of energy-saving dispatching is obtained, and the requirements on calculation accuracy and speed of a large electric network are met.

Description

technical field [0001] The invention relates to an energy-saving power generation dispatching method, in particular to an optimization method for power system energy-saving power generation dispatching based on direct current flow. Background technique [0002] Under the current background of global energy shortage and increasingly serious environmental pollution, power generation enterprises, as major energy consumers and pollutant emitters, how to save existing energy and reduce emissions while ensuring power production supply and safe scheduling is the general trend. When the power dispatching organization prepares the power generation plan of the power grid enterprise, it generally adopts the method of planned power generation, and arranges the daily power generation plan of the unit according to the planned power generation of each power plant formulated annually or monthly. There is no effective basis for how to reflect energy-saving power generation dispatching when a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/46
Inventor 王建军杨增辉王峥杨宗麟
Owner EAST CHINA ELECTRIC POWER TEST & RES INST
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