Power system frequency response analysis method considering frequency space distribution

A power system and frequency response technology, applied in circuit devices, AC network circuits, reducing/preventing power oscillation, etc., can solve the problems of insufficient simulation efficiency and limited improvement of simulation efficiency, and achieve high calculation accuracy and calculation efficiency.

Inactive Publication Date: 2017-04-19
DALIAN UNIV OF TECH
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Problems solved by technology

However, there is no essential difference between it and the full-state model in terms of overall structure and calculation process, and the improvement of simulation efficiency is limited. When dealing with the analysis of primary frequency regulation of...

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  • Power system frequency response analysis method considering frequency space distribution
  • Power system frequency response analysis method considering frequency space distribution
  • Power system frequency response analysis method considering frequency space distribution

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Embodiment Construction

[0034] In order to make the technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention:

[0035] Such as figure 1 A power system frequency response analysis method considering frequency space distribution is shown, which analyzes the system unbalanced power distribution among units, and concludes that the unbalanced power distribution includes two processes: impact distribution and inertia distribution, which specifically includes the following steps:

[0036] S1: According to the original admittance matrix B of the power system, the simplified admittance matrix B1 containing only disturbance points and power generation nodes is calculated;

[0037] S2: Calculate the impact coefficient between the disturbance node and each power generation node according to the admittance simplif...

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Abstract

The invention discloses a power system frequency response analysis method considering frequency space distribution, which analyzes the distribution law of system imbalance power among units and reaches a conclusion that the imbalance power distribution comprises two processes of impact distribution and inertia distribution. The distribution law of the system imbalance power among units is realized, a conclusion is reached that the imbalance power distribution mainly comprises two processes of impact distribution and inertia distribution, and a simplified admittance matrix is adopted to realize the above two distribution processes. As is shown by simulation analysis, the method can effectively reflect influences brought to the frequency by the unit distribution features and the change relation between the system frequency and the active power. On the premise of ensuring high calculation precision, the calculation efficiency is greatly enhanced compared with the existing model and the method can be used for large-scale system long-time dynamic frequency analysis.

Description

technical field [0001] The invention relates to the technical field of power system frequency response analysis, in particular to a power system frequency response analysis method considering frequency space distribution. Background technique [0002] Frequency is an important index to measure the safety of the power system, and the next frequency adjustment is particularly important in the absence of high power [1,2] , an accurate and effective simulation model about primary frequency modulation is needed in the research. [0003] In the current research related to frequency regulation, the widely used single-machine or multi-machine with concentrated load model aggregates the equivalent value of the whole network generator into a single-machine model, adopts a unified central frequency and a complete or simplified prime mover-governor model, but does not Considering the system network structure, the frequency change can be quickly estimated. However, the system frequency...

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Application Information

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IPC IPC(8): H02J3/24
CPCH02J3/24H02J2203/20
Inventor 刘娆沈硕巴宇田池郭晓李卫东
Owner DALIAN UNIV OF TECH
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