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Improved DC (Direct Current) dynamic optimal power flow calculating method based on network loss iteration

A technology of optimal power flow and calculation method, which is applied in calculation, instrumentation, data processing applications, etc., and can solve the problems of poor calculation accuracy of DC dynamic optimal power flow and low efficiency of AC dynamic optimal power flow calculation, etc.

Active Publication Date: 2015-11-11
HOHAI UNIV
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Problems solved by technology

[0005] Purpose of the invention: The technical problem to be solved by the present invention is the low efficiency of AC dynamic optimal power flow calculation and the poor accuracy of DC dynamic optimal power flow calculation

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  • Improved DC (Direct Current) dynamic optimal power flow calculating method based on network loss iteration
  • Improved DC (Direct Current) dynamic optimal power flow calculating method based on network loss iteration
  • Improved DC (Direct Current) dynamic optimal power flow calculating method based on network loss iteration

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Embodiment Construction

[0041] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] DOPF is a nonlinear programming problem. The standard form of a nonlinear programming problem is as follows:

[0043] min . f ( x ) s . t . h ( x ) = 0 ...

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Abstract

The present invention discloses an improved DC (Direct Current) dynamic optimal power flow calculating method based on network loss iteration. For conventional dynamic optimal power flow, the whole dispatching cycle is integrally optimized, variables and a constraint number of the conventional dynamic optimal power flow are rapidly increased along with increase of a time period number so as to cause low calculation efficiency; and DC dynamic optimal power flow is high in calculating efficiency, but is lower in accuracy. According to the present invention, an equivalent load is obtained in a network loss iteration mode, a network loss equivalent load model is established, then the improved DC dynamic optimal power flow calculating method based on network loss iteration is disclosed; and the complexity of a conventional dynamic optimal power flow model is effectively reduced. By simulation testing of a plurality of calculation examples, a result shows that the method has higher calculating accuracy and calculating efficiency.

Description

technical field [0001] The invention relates to an improved DC dynamic optimal power flow calculation method based on network loss iteration, and belongs to the field of power system optimization operation. Background technique [0002] The optimal power flow (OPF) of the power system refers to the stable operation state of the system that achieves the optimal target by adjusting the available control means in the system under certain grid operation and security constraints. OPF can improve the economy of the power system as much as possible while ensuring the safety of the power system, which is of great significance to the scheduling, operation and control of the actual power system. The classic AC dynamic optimal power flow (active current dynamic optimal power flow, ACDOPF) is a static OPF problem that includes multiple time periods, and each time period is coupled with each other through dynamic constraints such as generator ramp rate constraints or power supply and pur...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 卫志农何天雨孙国强孙永辉臧海祥朱瑛高沁张思德
Owner HOHAI UNIV
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