Coordination control and analysis of TCSC devices to protect electrical power systems against disruptive disturbances

Title:

Coordination control and analysis of TCSC devices to protect electrical power systems against disruptive disturbances

Creator:

Wang, Zhaoxu, Zhai, Chao, Zhang, Hehong, Xiao, Gaoxi, Chen, Guanghou, and Xu, Yulin

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:61c3de5e-e526-4c20-aba5-662ff310a7d8
uuid:61c3de5e-e526-4c20-aba5-662ff310a7d8
doi:10.14736/kyb-2022-2-0218

Subject:

coordination control, thyristor-controlled series compensation(TCSC), power systems, and disruptive disturbances

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

In this work, we study coordination control and effective deployment of thyristor-controlled series compensation (TCSC) to protect power grids against disruptive disturbances. The power grid consists of flexible alternate current transmission systems (FACTS) devices for regulating power flow, phasor measurement units (PMUs) for detecting system states, and control station for generating the regulation signals. We propose a novel coordination control approach of TCSC devices to change branch impedance and regulate the power flow against unexpected disturbances on buses or branches. More significantly, a numerical method is developed to estimate a gradient vector for generating regulation signals of TCSC devices and reducing computational costs. To describe the degree of power system stress, a performance index is designed based on the error between the desired power flow and actual values. Moreover, technical analysis is presented to ensure the convergence of the proposed coordination control algorithm. Numerical simulations are implemented to substantiate that the coordination control approach can effectively alleviate the stress caused by contingencies on IEEE 24 bus system, as compared to the classic PID control. It is also demonstrated that the deployment of TCSCs can alleviate the system stress greatly by considering both impedance magnitude and active power on branches.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

218-236

Source:

Kybernetika | 2022 Volume:58 | Number:2

Harvested from:

CDK

Metadata only:

false