Published by Arif Nur AFANDI1,2,3, Irham FADLIKA1, Langlang GUMILAR1, Takeshi HIYAMA4 1Electrical Engineering, Universitas Negeri Malang, Malang, Indonesia 2Center for Advanced Materials for Renewable Energy, Universitas Negeri Malang, Malang, Indonesia3Smart Power and Advanced Energy Systems Research Center, Batu, Jawa Timur, Indonesia4The IROAST, Kumamoto University, Kumamoto, Japan Abstract. Based on current developments related to the applicationContinue reading “Operating Assessment of Local Power Grid Development Considered Captive Power Plant and Expanding Structure”
Author Archives: PQBlog
Industrial Harmonic Filter Design
Published by Electrotek Concepts, Inc., PQSoft Case Study: Industrial Harmonic Filter Design, Document ID: PQS0504, Date: June 30, 2005. Abstract: The industrial harmonic problem can be solved using a comprehensive approach including site surveys, harmonic measurements, and computer simulations. Simple calculations are used to determine the system resonant frequencies and then the preliminary model development isContinue reading “Industrial Harmonic Filter Design”
System and Equipment Grounding Safety
Published by Alex Roderick, EE Power – Technical Articles: System and Equipment Grounding Safety, August 15, 2021. Grounding is used to provide a safe path for a fault current to flow. Grounding is an integral part of any properly operating electrical system. In residence, grounding protects the occupants by providing a safe pathway for unwanted electricityContinue reading “System and Equipment Grounding Safety”
Definition and Origin of Harmonics
Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Definition and origin of harmonics Definition of Harmonics The presence of harmonics in electrical systems means that current and voltage are distorted and deviate from sinusoidal waveforms. Harmonic currents are caused by non-linear loads connected to the distribution system. A load is said toContinue reading “Definition and Origin of Harmonics”
Single-point and Multi-point Signal Grounding
Published by Lorenzo Mari, EE Power – Technical Articles: Single-point and multi-point Signal Grounding, April 16, 2021. A grounding arrangement must be designed and implemented adequately for the electronic equipment’s proper performance Introduction The main categories for grounding electronic equipment are: • Safety ground (AC and DC power ground) prevents shocks and fire hazards from theContinue reading “Single-point and Multi-point Signal Grounding”
Assessment of the Impact of Photovoltaic System on the Power Quality in the Distribution Network
Published by Marek GAŁA, Andrzej JĄDERKO, Czestochowa University of Technology, Faculty of Electrical Engineering Abstract. The paper offers a characteristic of a photovoltaic (PV) system with the function UPS, equipped with energy storage AQUION ENERGY Battery 25 kWh and a system for monitoring and management of energy flow. Results and their analysis is presented forContinue reading “Assessment of the Impact of Photovoltaic System on the Power Quality in the Distribution Network”
Detect and Eliminate Harmonics: Why?
Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Detect and eliminate harmonics: why? Harmonic Disturbances Harmonics flowing in distribution networks represent disturbances in the flow of electricity. The quality of electrical power is deteriorated, and the efficiency of the system is decreased. Here are the main risks linked to harmonics: • OverloadContinue reading “Detect and Eliminate Harmonics: Why?”
Reactors in a Power System
Published by Alex Roderick, EE Power – Technical Articles Reactors in a Power System, May 03, 2021. This article highlights two common types of reactors which are the dry-type and the oil-immersed. In an AC circuit, reactance is the opposition to current flow. A reactor, also known as a line reactor, is a coil wired in series betweenContinue reading “Reactors in a Power System”
Types of Surge Arresters
Published by Lorenzo Mari, EE Power – Technical Articles: Types of Surge Arresters, December 18, 2020. Learn about the most common types of surge arresters used to protect against transient overvoltages and lightning strikes. Surge arresters introduce shunting resistance to the ground when a surge appears, absorbing energy from the surge without the voltage becoming excessive.Continue reading “Types of Surge Arresters”
Substation Protection Against Transient Overvoltages and Lightning Strikes
Published by Lorenzo Mari, EE Power – Technical Articles: Substation Protection Against Transient Overvoltages and Lightning Strikes, December 11, 2020. Learn how surge arresters protect power substations against lightning and switching overvoltages. Transient overvoltages are typical of power systems. The sources of overvoltages are direct or nearby lightning strikes, switching operations, electromagnetic pulses, and electrostatic discharges.Continue reading “Substation Protection Against Transient Overvoltages and Lightning Strikes”
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