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A Coordinated Control Method of Statcom and Generator Excitation System

A technology of coordinated control and excitation system, applied in flexible AC power transmission system, AC network voltage adjustment, reducing/preventing power oscillation, etc., can solve problems such as large voltage fluctuations, achieve oscillation suppression, improve power angle characteristics and angular velocity characteristics, The effect of simplifying the calculation process

Active Publication Date: 2022-05-13
西安西电自动化控制系统有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a coordinated control method of STATCOM and generator excitation system, which solves the problem of large voltage fluctuations in the generator excitation and STATCOM coordinated control system existing in the prior art

Method used

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  • A Coordinated Control Method of Statcom and Generator Excitation System
  • A Coordinated Control Method of Statcom and Generator Excitation System
  • A Coordinated Control Method of Statcom and Generator Excitation System

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Embodiment

[0138] Using Matlab / Simulink environment for simulation analysis, the infinite system parameters and the parameters of the command filter Backstepping method (CFBC) designed in this paper are selected as follows: H = 5.9; E' q =1.08;P m = 1.0; ω 0 =314.159rad / s; δ 0 =60°;T s =0.02;X L1 =0.1;X L2 =0.3;X T =0.32;c 1 =c 2 = 6.35; c 3 = 3.55; c 4 =50; if the uncertain damping coefficient is set to , then the uncertain parameter D=1. Among them, the stand-alone infinite system (SMIB) such as figure 1 As shown, the generator with excitation equipment is connected to the transmission line with circuit breaker through the transformer, and the STATCOM is installed at the midpoint of the line, which is also the access point that can improve the transmission energy of the system and effectively increase the transmission capacity and distance .

[0139] The transient response curves of the state variables (power angle) and (angular velocity) are as follows figure 2 and ima...

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Abstract

The invention discloses a method for coordinated control of STATCOM and generator excitation system, which is characterized in that it is specifically implemented according to the following steps: Step 1. Establish a mathematical model of a coordinated control system including a fourth-order static synchronous compensator and generator excitation, and define commands Filter; step 2, combined with the command filter defined in step 1, so that each virtual control input in step 1 is used as the input of the command filter to calculate the Lyapunov function value, when the calculated Lyapunov function reaches negative definiteness, complete STATCOM Coordinated control with the generator excitation system solves the problem of large voltage fluctuations in the generator excitation and STATCOM coordinated control system in the prior art.

Description

technical field [0001] The invention belongs to the technical field of power systems, and relates to a coordinated control method for a STATCOM and a generator excitation system. Background technique [0002] Flexible AC Transmission System (FACTS), as one of the advanced technologies to effectively improve the stability of the interconnected grid, is an important part of the intelligent transmission link in the construction of my country's smart grid. Static synchronous compensator (STATCOM), as a main FACTS device, has superior performances such as reducing losses, stabilizing voltage, reducing harmonics, and improving system transient stability. At present, the coordinated control of STATCOM and generator excitation system is widely used, but the existing coordinated control method of STATCOM and generator excitation system has the problems of large voltage fluctuation, high dimensionality, computational explosion, and difficulty in realizing virtual control. All serious...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24H02J3/16
CPCH02J3/24H02J3/16Y02E40/10Y02E40/30
Inventor 张蕾朱家豪李鹏飞杜超凡王晓华王文杰
Owner 西安西电自动化控制系统有限责任公司
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