Static load frequency factor polymerization method in load model

A technology of static load and load model, applied in the field of aggregation, can solve the problems of simulation accuracy deviation and inability to accurately describe the static frequency characteristics of the load.

Active Publication Date: 2016-01-06
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

However, with the development of science and technology and the great changes in the industrial structure, the load composition and characteristics of the power grid have undergone tremendous changes. Especially with the development of cross-regional hybrid power grids, there is a large deviation between the simulation accuracy of the current load model parameters and the reality, resulting in the inability of the current load model parameters. Accurately describe the static frequency characteristics of the load

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  • Static load frequency factor polymerization method in load model
  • Static load frequency factor polymerization method in load model
  • Static load frequency factor polymerization method in load model

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Embodiment

[0059] In order to verify the effectiveness of the static load frequency factor aggregation calculation method in the load model parameters proposed by the present invention, the load model parameters currently used in Hancheng 220kV substation, the load model parameters generated by this method and the original system (including Hancheng substation 110kV, 35kV power distribution network, reactive power compensation and 110kV, 35kV, 10kV, 6kV load node systems in the load area, such as figure 2 As shown), the simulation comparison is carried out to verify the effectiveness of the static load frequency factor aggregation calculation method proposed by the present invention.

[0060] image 3 It is a simulation system with 2 machines and 2 areas: a synchronous generator set and an asynchronous wind turbine set form the power supply end, and the load side is Hancheng 220kV load substation, and the sending end and receiving end are connected by a double-circuit line in the middle...

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Abstract

The invention provides a static load frequency factor polymerization method in a load model. The method comprises the following steps: (1) describing frequency characteristics of a static load in the load model; (2) calculating comprehensive active power of the static load; and (3) determining a static load frequency factor in the load model. The static load frequency factor of the load model is polymerized by adopting a per-unit value of the static load active power in a single equipment type relatively to total static load active power of nodes as a weighting factor for describing the frequency characteristics of the static load. The defect that traditional load model parameters cannot accurately describe the frequency characteristics of the static load is overcome; the credibility of simulating calculation of a power system is improved; and a strong guarantee is provided for scientific planning and safe and stable operation of the power system.

Description

technical field [0001] The invention relates to an aggregation method, in particular to a static load frequency factor aggregation method in a load model. Background technique [0002] With the improvement of the interconnection degree of the power system, the dynamic characteristics of the power grid under faults become more and more complex. A comprehensive understanding of its characteristics. Because on the one hand, the requirements of the power grid itself determine that it is impossible to do experiments in the actual power grid to study the system stability; It is possible to conduct research on the stability of the grid in real systems. In this case, simulation becomes an indispensable tool for power grid operation, planning and design. [0003] In the actual operation of the power system, the frequency dynamic process curve can be obtained through actual measurement, but sometimes there is a big difference between the system simulation results and the measured f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 王琦赵兵汤涌易俊刘丽平
Owner CHINA ELECTRIC POWER RES INST
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