Abstract
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.
Highlights
Renewable energy (RE) systems are rapidly being developed and employed as viable alternatives for the traditional fossil-fuel based generation systems [1]
CASE 4: Doubly-Fed Induction Generator (DFIG)-BASED Wind Energy Conversion Systems (WECS) LOCATED AT BUS 2 AND SOLAR PV LOCATED AT BUS 5 This section presents the analysis of the fourth case when DFIG-WECS is located at bus 2 and PV system at bus 5, which are the strongest buses within the system
The Critical Voltage Sensitivity Index (CVSI) measures the impact of increasing RE penetration level (PL) on the rise in critical voltage level of each bus in the system and the CQSI evaluates the impact of increasing RE PL on the intolerance of each bus to loss of reactive power
Summary
Renewable energy (RE) systems are rapidly being developed and employed as viable alternatives for the traditional fossil-fuel based generation systems [1]. This gives a better insight on the overall voltage instability sensitivity of the power system buses with increase in RE penetration level (PL) Practical considerations such as the reactive power limits and the reactive power capability of the conventional generators and the RE conversion systems have been taken into account in this study. The effect of increased RE PL on the critical voltage profile of the power system buses has been evaluated using Critical Voltage Sensitivity Index (CVSI) These indices have been developed using QV curve analysis. This can give insights on the appropriate location of large inductive loads or reactive power compensation devices as the RE penetration level increases.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
