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Two-level distributed simulation method for wind power collection area based on distributed power flow calculation

A technology of distributed simulation and power flow calculation, applied in design optimization/simulation, calculation, AC network circuit, etc., to achieve the effect of improving simulation speed and reducing computational burden

Active Publication Date: 2016-06-29
TSINGHUA UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To meet the needs of quasi-steady-state simulation calculations in current wind power collection areas

Method used

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  • Two-level distributed simulation method for wind power collection area based on distributed power flow calculation
  • Two-level distributed simulation method for wind power collection area based on distributed power flow calculation
  • Two-level distributed simulation method for wind power collection area based on distributed power flow calculation

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Embodiment Construction

[0019] The two-level distributed simulation method of wind power collection area based on distributed power flow calculation proposed by the present invention is described in detail as follows in combination with the embodiments:

[0020] The two-level distributed simulation method of wind power collection area based on distributed power flow calculation proposed by the present invention is characterized in that the simulation calculation at each moment includes two parts: backbone network simulation and sub-network simulation in the wind farm, and the two parts are calculated in parallel. The time interval Δt is set to the order of ten milliseconds (generally, the value range is between the half cycle corresponding to the 50Hz power frequency and the time delay of various protection actions, and 10ms is taken in the embodiment); wherein, the backbone network simulation specifically includes the following steps:

[0021] 1.1) Extract the backbone network data obtained from the ...

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Abstract

The present disclosure relates to a simulation method and simulation apparatus for a wind farm common coupling region. The simulation method includes: obtaining main network data calculated in a previous simulation period as initial values for performing a main network simulation in a current simulation period; obtaining sub-network data of a sub-network corresponding to each wind farm which is calculated in the previous simulation period as initial values for performing a sub-network simulation in the current simulation period, in which the sub-network data of the sub-network corresponding to each wind farm comprises terminal voltage amplitudes of wind turbines and static reactive power compensation devices in each wind farm; performing the main network simulation and the sub-network simulation in parallel in the current simulation period.

Description

technical field [0001] The invention belongs to the technical field of simulation technology of wind field collection area of ​​electric power system. Background technique [0002] In recent years, several voltage-induced cascading off-grid accidents of multiple wind farms have occurred in the wind power collection area. The time-sequence quasi-steady-state simulation of the regional power grid is considered to be an effective method to analyze the system voltage security state and the accident diffusion mechanism. The timing simulation of the wind power collection area is to establish the quasi-steady-state model of the wind turbine, static var compensation device, static var generator and other equipment in the wind farm, combined with the static model of the wind farm internal network and the collection area network, through the calculation model To complete the simulation of the change process of physical quantities such as voltage and power in the wind power collection ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20G06F30/20G06F30/367G06F2119/06Y02E60/00Y04S40/20
Inventor 郭庆来蓝海波孙宏斌刘海涛王彬王哲张伯明吴文传徐峰达
Owner TSINGHUA UNIV
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