1CTO & Head (Central Design + QA + Green Hydrogen Tech), Hero Future Energies
2GM (Central Design and Engineering), Hero Future Energies
3Manager (Central Design and Engineering), Hero Future Energies
Online published on 23 October, 2024.
This technical paper addresses the imperative challenge faced by wind and solar power plants concerning over-voltages-at their terminal ends and its key sub-components, leading to disruptive Intra-grid tripping events and subsequent losses-in power generation and revenue. The context stems from the recommendations laid out by the CEA working group committee i.e. “Generating station shall-be capable of supplying dynamically varying reactive power support so as to maintain power factor within limits of 0.95 lagging to 0.95 leading at the corresponding generation level at the POI” considering “Maximum Ambient Temperature + 1°C” at the respective location”. This necessitates power stations to provide dynamic reactive power support to maintain power factor within specified limits. However, the integration of this recommendation, often exacerbates over-voltage occurrences within wind and-solar farms. The paper investigates the root causes and repercussions of over-voltage events, including the tripping/forced shutdowns of wind turbine generators and solar plants, which are crucial to avoid insulation failure and maintain grid stability. It-proposes comprehensive mitigation strategies tailored to the unique operational characteristics of wind and solar power-plants. These paper focuses on ongoing practices, problems associated with it and counter measures, all aimed at-curbing over-voltage incidents while optimizing power generation eefficiency and revenue sustainability. Through theoretical analysis and simulation studies, this paper offers practical insights and solutions to mitigate over-voltage challenges, ensuring seamless integration of renewable energy sources into the grid while safeguarding the-operational integrity and financial viability of wind and solar power plants.
