Achieving Optimal Reactive Power Compensation in Distribution Grids by Using Industrial Compensation Systems

Abstract

This paper presents a method for integrating industrial consumers owning compensation systems as alternative reactive power sources into grid operating processes. In remuneration, they receive a market-based provision of reactive power. The aim is to analyze the potential of reactive power compensation systems of industrial companies connected to medium-voltage (10 kV–30 kV) AC grids in order to increase the reactive power ability of distribution grids. Measurement methods and reactive power potential results of six industrial companies are presented to characterize the amount and temporal availability of their reactive power potential. The presented approach for using the decentralized reactive power potential is a centralized reactive power control method and is based on optimal power flow (OPF) calculations. An optimization algorithm based on linear programming is used to coordinate a reactive power retrieval tuned to the actual demand. The influencing quantities are the current grid status (voltage and load flow capacity reserves at grid nodes and power lines) and the current reactive power potential of the reactive power sources. The compensation impact of six measured industrial companies on an exemplary medium-voltage grid is shown by an application example.

Optimal Capacitor Placement in Real Distribution Network with Reactive Power Support of Distributed Generation

“…Their work provides the real implementation approaches for the purpose of improving the grid's functionality. [12] In the same vein, Lin's et al paper have made an assessment on a reactive power compensation approach of electric vehicles connected to distribution networks that could result in voltage constraints at extreme operating state. These researchers are finding out about the supportive role that electric vehicles assume on power grids and the related possibility of reactive power increase and preventing it.…”

“…This characterization comes from the fact that many methods and technologies are present in the process and they all move towards achieving a high-quality grid, which is reliable, efficient, and can withstand any challenge, including changing operational conditions and rapid renewable energy integration. [12] [14] Improving the voltage profile and active power loss in electrical power distribution systems through optimal capacitor placement is done using genetic algorithms. The study employs loss sensitivity analysis and GA, demonstrating a multi-purpose goal function for the simultaneous reduction of losses and improvement of the voltage profile.…”

Modeling of an Active Reactive Power Compensator Operation in an Autonomous Electric Power System

“…Practical application and research of static thyristor compensators (STC), accomplished by various known electrical engineering stake-holders (ABB, General Electric, Schneider Electric, Mitsubishi, Siemens, Westinghouse, Hitachi Energy, etc.) have shown that STC designs based on the thyristor-controlled shunt reactors, on the so-called thyristor-reactor groups, and higher harmonics parallel filters, commonly called a compensating filter [6,7] are most suitable for use in power supply systems. In Jordan, Ukraine and many other countries, a full range of scientific research, design, and engineering development related to this field is being carried out [8,9], which proves the relevance of this study.…”

Impact of Automation on Enhancing Energy Quality in Grid-Connected Photovoltaic Systems

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