Frequency regulation optimization control method for multi-source power system by using capacitance energy storage technology

Abstract

The invention discloses a frequency regulation optimization control method for a multi-source power system by using a capacitance energy storage technology. The method comprises the following steps: S1, establishing a control region model, and releasing a controlled power system based on two regions with six power generation units, the six power generation units being connected with each other through tie lines, and the two regions both comprising capacitive energy storage (CES) units and thyristor control phase shifter (TCPS) unit series connection lines; S2, establishing a thyristor controlphase shifter model; S3, performing capacitor energy storage modeling; S4, performing the optimization process as follows: S41, a mathematical formula; S42, an optimal automatic generation control AGCcontroller is designed for an objective function; and S43, a sine and cosine algorithm is implemented. According to the invention, frequency adjustment optimization control is realized.

Description

technical field [0001] The invention provides a system frequency adjustment method for capacitive energy storage and thyristor-controlled phase shifters for multi-source and multi-region use based on sine-cosine algorithm. Background technique [0002] Over time, the configuration of traditionally interconnected power systems has shifted into the realm of deregulation. The deregulation of the traditional electricity system has reformed the existing electricity industry globally, and new business entities, such as GENCO (generation company), DISCO (distribution company), TRANSCO (transmission company) and independent system operator (ISO), are already competing Created in a fierce trade market. These newly formed organizations have the responsibility to maintain stability, security and reliability in a very moderate and decentralized control environment. However, the addition of these new electricity entities has made power system operations more complex. In this situation...

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Problems solved by technology

In addition, the increased penetration of distributed energy resources (wind / photovoltaic generators / small hydro, etc.) in existing power networks has resulted in severe challenges in frequency stability, which has drawn the attention of power system operators and regulators

It is obvious that a pure traditional generator set (heat-water-gas-nuclear) can reduce the overall inertia of the entire power system, but in a deregulated control framework, when intermittent generator sets are added, the grid frequency dynamics become difficult to control

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