With the growing penetration of distributed energy resources (DER), accompanying challenges have led utilities to limit hosting capacities DER installations on distribution feeders. A static synchronous compensator (DSTATCOM) is a power electronic device provide dynamic injections and absorption reactive into grid with more flexible reliable voltage control quality improvement. management syste...

In the DG DemoNet Validation project a coordinated voltage controller was developed to actively integrate a high share of renewables into existing distribution systems. The impact of controlling the medium voltage transformer and the reactive power of distributed generation based on the actual voltages of critical nodes on voltage range and number of tap changer operations is analysed. Evaluati...

Problems with overvoltage and reverse energy flow arise as the percentage of distribution resources (DERs) in system rises. This paper implements a MATLAB/Simulink linked model that communicates OpenDSS engine. The point common coupling (PCC) voltage typically mitigates using inverter outputs control. However, case issues occur networks influence volt–var control effect is insufficient to reduc...

Ultra-large scale control systems that are based on layered optimization decomposition and Network Utility Maximization (NUM) have structural properties and operational modes that givesuch control systems useful scalabilityand anti-fragile properties. We denote control architectures based on these principles as Laminar Control and we suggest that the structure so defined has properties such as ...

This paper proposes an online voltage control strategy of distributed energy resources (DERs), based on the projected Newton method (PNM), for unbalanced distribution networks. The optimal Volt/VAr (VVC) problem is formulated as optimization program, with goal maintaining profile across network by coordinating VAr outputs DERs. To overcome slow convergence rate conventional gradient-based metho...

Security and reliability of electrical power supply has become indispensable to modern society, the system operator is challenged manage increasingly complex in a manner that ensures expected security operation. In this context, Volt/VAR optimization (VVO) plays key role efficient delivery through transmission system, contributing significantly security, reliability, quality economy This articl...

This document describes the procedures used at NIST to calibrate dc voltage standards in terms of the NIST volt. Three calibration services are offered by the Electricity Division: Regular Calibration Service (RCS) of client standard cells at NIST; the Volt Transfer Program (VTP) a process to determine the difference between the NIST volt and the volt as maintained by a group of standard cells ...