Adjustment power flow generation method considering operation constraints

A technology of power flow and adjustment quantity, applied in the direction of AC network voltage adjustment, AC network with the same frequency from different sources, AC network circuit, etc. The effect of optimal solution, reasonable calculation results and high convergence

Active Publication Date: 2020-08-18
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For more complex adjustment needs, such as: when the central bus voltage tracks a given value, or when the power of a transmission section tracks a...

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  • Adjustment power flow generation method considering operation constraints
  • Adjustment power flow generation method considering operation constraints
  • Adjustment power flow generation method considering operation constraints

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Embodiment Construction

[0056] The present invention proposes an adjustment power flow generation method considering operational constraints, which will be further described below in conjunction with specific implementation methods.

[0057] The present invention proposes a method for generating an adjusted power flow considering operational constraints, including the following steps:

[0058] (1) Construct an adjusted power flow model considering operational constraints, which is composed of objective functions and constraints; the specific steps are as follows:

[0059] (1-1) Determine the objective function of the model;

[0060] The goal of power system real-time dispatching is to minimize the amount of active and reactive power adjustment, so the objective function of the adjusted power flow generation model considering operational constraints is set as:

[0061]

[0062] In the above formula, N is the number of nodes, the subscript i represents the node number, V is the voltage amplitude, a...

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Abstract

The invention relates to an adjustment power flow generation method considering operation constraints, and belongs to the field of power system operation. The method comprises the following steps of firstly, establishing an adjustment power flow model which consists of a target function and constraint conditions and considers operation constraints; and then decomposing an original model into an active sub-model and a reactive sub-model by using an active-reactive combined staged optimization technology, firstly carrying out active optimization and then carrying out reactive optimization on thebasis of the active optimization, and finally obtaining the active power and the reactive power of each node meeting a power flow result. The method not only can be used for dispatcher power flow analysis, but also can be used for scenes of online safety correction control, scheduling plan correction, offline power flow mode generation and the like, the method can perform power flow calculation under the condition of considering a pivot bus voltage tracking given value and a transmission section power tracking given value, and a feasible solution is ensured.

Description

technical field [0001] The invention relates to an adjustment power flow generation method considering operation constraints, and belongs to the technical field of power system operation. Background technique [0002] The result of power system power flow calculation is the basis of power system stability calculation and fault analysis. The traditional power flow adjustment technology forms a new power flow distribution by changing the boundary of the ground state power flow such as the active / reactive power of the PQ node or the active power / voltage of the PV node, or by changing the topological parameters such as the switch state and the tap file. This adjustment function has certain limitations. For more complex adjustment needs, such as: when the central bus voltage tracks a given value, or when the power of a transmission section tracks a given value, the existing power flow tools will not be applicable. Time-consuming, feasibility and optimization cannot be guarantee...

Claims

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Application Information

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IPC IPC(8): H02J3/06H02J3/12
CPCH02J3/06H02J3/12H02J2203/10H02J2203/20G05B13/042
Inventor 王彬孙宏斌吴文传郭庆来慕宗达
Owner TSINGHUA UNIV
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