scholarly journals Maximizing Distributed Energy Resource Hosting Capacity of Power System in South Korea Using Integrated Feeder, Distribution, and Transmission System

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3367
Author(s):  
Victor Widiputra ◽  
Junhyuk Kong ◽  
Yejin Yang ◽  
Jaesung Jung ◽  
Robert Broadwater
Keyword(s):  
South Korea ◽  
Power System ◽  
Distribution System ◽  
Voltage Stability ◽  
Energy Resource ◽  
Test System ◽  
Transmission System ◽  
System Level ◽  
Distributed Energy ◽  
Distributed Energy Resource

Intermittent power generated from renewable distributed energy resource (DER) can create voltage stability problems in the system during peak power production in the low demand period. Thus, the existing standard for operation and management of the distribution system limits the penetration level of the DER and the amount of load in a power system. In this standard, the hosting capacity of the DER is limited to each feeder at a level where the voltage problem does not occur. South Korea applied this standard, thereby making it hard to achieve its DER target. However, by analyzing the voltage stability of an integrated system, the hosting capacity of DER can be increased. Therefore, in this study, the maximum hosting capacity of DER is determined by analyzing an integrated transmission and distribution system. Moreover, the fast voltage stability index (FVSI) is used to verify the determined hosting capacity of DER. For this, the existing interconnection standard of DER at a feeder, distribution system, and transmission system level is investigated. Subsequently, a Monte Carlo simulation is performed to determine the maximum penetration of the DER at a feeder level, while varying the load according to the standard test system in South Korea. The actual load generation profile is used to simulate system conditions in order to determine the maximum DER hosting capacity.

scholarly journals Continuation Power Flow Based Distributed Energy Resource Hosting Capacity Estimation Considering Renewable Energy Uncertainty and Stability in Distribution Systems

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4367
Author(s):  
Hyun-Tae Kim ◽  
Jungju Lee ◽  
Myungseok Yoon ◽  
Moon-Jeong Lee ◽  
Namhun Cho ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Radial Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Distribution Systems ◽  
Energy Resource ◽  
Distributed Energy ◽  
Radial Distribution System ◽  
Continuation Power Flow ◽  
Distributed Energy Resource

Recently, the demand for electricity has been increasing worldwide. Thus, more attention has been paid to renewable energy. There are acceptable limits during the integration of renewable energy into distribution systems because there are many effects of integrating renewable energy. Unlike previous studies that have estimated the distributed energy resource (DER) hosting capacity using the standard high voltage and probability approach, in this study, we propose an algorithm to estimate the DER hosting capacity by considering DER outages due to abrupt disturbances or uncertainties based on the generator ramp rate and voltage stability, which involves analysis of the low-voltage aspects. Furthermore, this method does not involve a complicated process or need large amounts of data to estimate the DER hosting capacity because it requires only minimum data for power flow. The proposed algorithm was applied to the IEEE-33 radial distribution system. According to the DER capacity, a voltage stability analysis based on continuation power flow (CPF) was conducted in a case of DER outage to estimate the DER hosting capacity in this case study. Thus, the DER hosting capacity was estimated for the IEEE-33 radial distribution system.

scholarly journals Performance Evaluation of Distributed Energy Resource Management Algorithm in Large Distribution Networks

2021 ◽  
Author(s):  
Jing Wang ◽  
Jianqiao Huang ◽  
Xinyang Zhou
Keyword(s):  
Performance Evaluation ◽  
Resource Management ◽  
Distribution System ◽  
Optimal Power Flow ◽  
Energy Resource ◽  
Distribution Networks ◽  
Hierarchical Optimization ◽  
Distributed Energy ◽  
Distributed Energy Resource ◽  
Large Distribution

This paper presents performance evaluation of hierarchical optimization and control for distributed energy resource management system (DERMS) in large distribution networks via an advanced hardware-in-the-loop (HIL) platform. The HIL platform provides realistic testing in a laboratory environment, including the accurate modeling of a full-scale distribution system of 11,000 nodes, the DERMS software controller, and 90 power hardware photovoltaics (PVs) and battery inverters. The applied DERMS algorithm is designed based on a realtime optimal power flow algorithm and implemented with acceleration design that performs fast dispatch of simulated PVs and real physical hardware DER devices every 4 seconds.<br>

scholarly journals Performance Evaluation of Distributed Energy Resource Management Algorithm in Large Distribution Networks

2021 ◽  
Author(s):  
Jing Wang ◽  
Jianqiao Huang ◽  
Xinyang Zhou
Keyword(s):  
Performance Evaluation ◽  
Resource Management ◽  
Distribution System ◽  
Optimal Power Flow ◽  
Energy Resource ◽  
Distribution Networks ◽  
Hierarchical Optimization ◽  
Distributed Energy ◽  
Distributed Energy Resource ◽  
Large Distribution

This paper presents performance evaluation of hierarchical optimization and control for distributed energy resource management system (DERMS) in large distribution networks via an advanced hardware-in-the-loop (HIL) platform. The HIL platform provides realistic testing in a laboratory environment, including the accurate modeling of a full-scale distribution system of 11,000 nodes, the DERMS software controller, and 90 power hardware photovoltaics (PVs) and battery inverters. The applied DERMS algorithm is designed based on a realtime optimal power flow algorithm and implemented with acceleration design that performs fast dispatch of simulated PVs and real physical hardware DER devices every 4 seconds.<br>

scholarly journals DSO–TSO Coordination of Day-Ahead Operation Planning with the Use of Distributed Energy Resources

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3559
Author(s):  
Rafal Dzikowski
Keyword(s):  
Distribution System ◽  
Power Plants ◽  
Distribution Systems ◽  
Transmission System ◽  
Energy Resources ◽  
System Level ◽  
Distributed Energy Resources ◽  
Operation Planning ◽  
Distributed Energy ◽  
Unit Commitment Problem

Growing penetration of uncoordinated Distributed Energy Resources (DERs) in distribution systems is contributing to the increase of the load variability to be covered at the transmission system level. Forced, fast and substantial changes of power plants’ output powers increase the risk of their failures, which threatens the reliable and safe delivery of electricity to end users in the power system. The paper handles this issue with the use of DERs and proposes a bilevel coordination concept of day-ahead operation planning with new kind of bids to be submitted by Distribution System Operators (DSOs) to the Transmission System Operator (TSO). This concept includes the extension of the Unit Commitment problem solved by TSO and a new optimization model to be solved by DSO for planning a smoothed power profile at the Transmission–Distribution (T–D) interface. Both optimization models are described in the paper. As simulations show, the modified 24-h power profiles at T–D interfaces result in a reduction of the demand for operation flexibility at the transmission system level and, importantly, result in a decrease of the number of conventional power plants that are required to operate during a day. Additionally, it has been proved that the modified profiles reduce the congestions in the transmission network. Hence, the concept presented in the paper can be identified as an important step towards the transformation of power systems to low-emission and reliable systems with high share of DERs.

scholarly journals Voltage Regulation Performance Evaluation of Distributed Energy Resource Management via Advanced Hardware-in-the-Loop Simulation

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6734
Author(s):  
Jing Wang ◽  
Harsha Padullaparti ◽  
Fei Ding ◽  
Murali Baggu ◽  
Martha Symko-Davies
Keyword(s):  
Resource Management ◽  
Energy Resource ◽  
Voltage Regulation ◽  
System Level ◽  
Management Systems ◽  
Automation System ◽  
Hardware In The Loop ◽  
Distributed Energy ◽  
Distributed Energy Resource ◽  
Automation Systems

This paper evaluates the performance of coordinated control across advanced distribution management systems (ADMS), distributed energy resources (DERs), and distributed energy resource management systems (DERMS) using an advanced hardware-in-the-loop (HIL) platform. This platform provides a realistic laboratory testing environment, including accurate dynamic modeling of a real-world distribution system from a utility partner, real controllers (ADMS and DERMS), physical power hardware (DERs), and standard communications protocols. One grid service—voltage regulation—is evaluated to show the performance of the coordinated grid automation system. The testing results demonstrate that the coordinated DERMS and ADMS system can effectively regulate system voltages within target operation limits using DERs. The realistic laboratory HIL testing results give utilities confidence in adopting the grid automation systems to manage DERs to achieve system-level control and operation objectives (e.g., voltage regulation). This helps utilities mitigate potential risks (e.g., instability) prior to field deployment.

Sign in / Sign up

Export Citation Format

Share Document