Safety control method of chain structure high voltage power grid based on multi-facts structure

Abstract

The invention discloses a multi-FACTS (flexible alternating-current transmission system) structure based chain structure high-voltage grid security control method. The chain structure high-voltage grid security control method mainly comprises establishing a power system model and a dynamic element model on the basis of transient stability; establishing a coordinated optimization model considering coordination among multiple FACTS for the chain structure high-voltage grid on the basis of the power system model and the dynamic element model; and solving the optimal solution of the coordinated optimization model. The multi-FACTS structure based chain structure high-voltage grid security control method can overcome the defects of low reliability, poor coordination and stability and the like in the prior art and has the advantages of high reliability, good coordination and stability.

Description

technical field [0001] The invention relates to the technical field of dispatching control of generators in electric power systems, in particular to a safety control method for a chained high-voltage power grid based on a multi-FACTS structure. Background technique [0002] The power system is a nonlinear, high-dimensional, multi-objective, hierarchically distributed large dynamic system, and maintaining its safe and stable operation is of great significance to the national economy, power companies and users. With the continuous expansion of the interconnection scale of the power system, the rapid development of the power market and the significant improvement of the power quality requirements on the user side, the operating environment and dynamic characteristics of the power system are becoming more and more complex, which puts forward higher requirements for the safe and stable operation of the power grid. [0003] In order to improve the transient stability, dynamic stab...

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Problems solved by technology

[0005] The multi-FACTS system provides a good support for the safe and stable operation of the Xinjiang and Northwest networking systems. However, the installation of such large-scale and multi-type FACTS equipment also brings a series of problems to system security, the most notable of which is the multiple Decentralized and independent control among FACTS components, without considering the control inconsistency that may be caused by the interaction of multiple FACTS components, resulting in weakened operation effects and even system instability

[0006] In the process of realizing the present invention, the inventor found that there are at least defects such as low reliability, poor coordination and poor stability in the prior art

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