Reactive Power-Voltage-Based Voltage Instability Sensitivity Indices for Power Grid With Increasing Renewable Energy Penetration

IEEE Access

卷:8

Christopher Maina Muriithi¹  Bukola Babatunde Adetokun²  Joseph Olorunfemi Ojo³ 

[1] Department of Electrical Engineering, Murang&x2019;

[2] Department of Electrical Engineering, Pan African University Institute for Basic Sciences, Technology and Innovation, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya;

[3] Department of Electrical and Computer Engineering, Tennessee Technological University, Cookeville, TN, USA;

关键词: DFIG-based wind energy conversion system;    QV curve analysis;    reactive power loss intolerance;    renewable energy integration;    solar photovoltaic system;    voltage instability sensitivity indices;   

DOI  :  10.1109/ACCESS.2020.2992194

来源: DOAJ

【 摘 要 】

In this work, a reactive power-voltage (QV)-based framework to evaluate the voltage instability sensitivities of power system buses to increase in renewable energy (RE) penetration has been developed using two sensitivity indices, namely, Critical Voltage Sensitivity Index (CVSI) and Critical Reactive Power Sensitivity Index (CQSI). The rise or fall in the critical voltage level is measured by CVSI and the reactive power loss intolerance of each bus is evaluated by the CQSI as the RE penetration level increases. The bus sensitivity analysis obtained from the CVSI and CQSI provides information on the voltage instability sensitivity of each power system bus to increase in RE penetration level. The proposed methodology has been evaluated using IEEE 14-bus system and New England 39-bus system. DIgSILENT PowerFactory was used to perform the simulations and Matrix Laboratory (MATLAB) used to analyse the results. The sensitivity analysis of the buses can provide insights on the most suitable placement for large reactive loads or devices such as Flexible Alternating Current Transmission Systems (FACTS) as the RE penetration level (PL) increases.

【 授权许可】

Unknown