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Splitting control is the last defence of power system emergency control against severe disturbance. With system-level and real-time decision mode, active splitting control shows advantages over traditional splitting control. Unfortunately, searching for splitting section is a NP hard problem. In this paper, a novel active splitting strategy search method inspired by modularity-based network partition...
Electric Vehicles (EV) are drawing tremendous attention, as part of the transition toward environment-friendly transportation. While EV recharging represents a considerable extra load on the grid, they also offer new opportunities in terms of consumption flexibility. In this paper, we use the recharging process of EVs to provide regulation to the grid by varying the instantaneous recharging power...
In recent years, rapid growth of the wind power all around the world highlights the requirement of developing accurate wind power forecasting method. Since the wind power generation mainly relies on wind speed and wind turbine condition, a novel wind power forecasting strategy considering wind turbine condition is proposed in this paper. The proposed strategy which can predict several-hours-ahead...
This paper presents fault ride through capability enhancement of Doubly Fed Induction Generator (DFIG) by using Superconducting Fault Current Limiter (SFCL). The specific model of a resistive-type SFCL based on Bi-2212 is implemented to accomplish the DFIG fault ride through improvement. Denmark grid code requirement with below 100 kV is interestingly considered as a criterion of this paper. The study...
In this paper, we develop a framework to manage incentive payments for participants of residential DRM programs. We consider multi-tier participation plans, clearly elaborating the terms of engagement with the grid operator for individual devices and making it easier to quantify inconvenience experienced by participants and financial gains for the grid operator. Our proposed framework aims to optimize...
This paper presents an efficient method planning Static var Compensators (SVC) to control harmonic voltage distortion and reactive power compensation a power system. The planning problem is formulated as an unconstrained optimization problem. In the approach also considers probabilistic characteristics of voltage, current and impedance of fundamental and harmonics in a power system. The objective...
With the development of smart demand response (DR) technology, it provide new ideas to utilize DR technologies to participate in spinning reserve of power system. Based on smart DR technologies, this paper presents a dispatching framework with DR participating in power system's reserve in various time scales, and then a coordinated optimization model is proposed to determine how much capacity the...
This paper presents the placement of DSTATCOM (distribution static compensator) in radial distribution systems for the compensation of reactive power. The reduction in Power loss and improvement in voltage profile are examined by injecting the reactive power at every node of a distribution system, one by one using DSTATCOM. A new mathematical modelling of DSTATCOM is derived and is integrated into...
This paper, which is part two of a two-part series, applies a technique for assessing control strategies for DSM in SGs by using reliability as a measure. The assessment methodology is presented and carried out in detail. This assessment is realised by using disaggregated load models. Two test networks (IEEE 14 bus and GSP radial) are used for simulations and to develop different DSM control strategies...
In this paper we describe the new security features of the international standard DLMS/COSEM that came along with its new Green Book Ed. 8. We compare them with those of the German Smart Meter Gateway approach that uses TLS to protect the privacy of connections. We show that the security levels of the cryptographic core methods are similar in both systems. However, there are several aspects concerning...
Co-simulation platform capable of accurately capturing the effects of power distribution network events as well as the communication network events is essential to develop realistic modeling and simulation of emerging smart grid scenarios. We present a new approach for co-simulation by addressing the issues of time and object synchronization between two different simulation environments, which are...
In this paper, we present a case study of the economic prospects of having renewable integration with storage in the district of Temburong in Brunei. Temburong has a microgrid consisting of diesel generators (DGs) with a peak demand in excess of 6 MW. It is forecasted that the peak load will be more than 10 MW by 2020. The inherent advantages of renewable energy motivates us to study the use of available...
There is a global trend of deploying distributed grid scale storages in power systems for specific applications like, renewable integration, peak load management, congestion management, etc. Due to high capital investment, return on investment (ROI) for grid scale storage for any specific application is not lucrative enough for investors. However, if these storages are used across multiple applications,...
Numerical simulation has become essential tool of the design process and is widely used for the validation and evaluation of smart grid solutions and applications. However, domain specific tools are able to model a system only for a particular domain i.e., electric power system tool can model only power systems and for a intelligent control it has no provision to design AI based decision making algorithms,...
Cost effective reduction of electricity demand in residential sector is a significant problem worldwide. Feedback intervention is a hot area that possesses considerable potential for achieving electricity saving. However, how to make feedback intervention more effective deserves to be properly explored. In the smart grid case study described in this paper, 3666 greater Sydney region households are...
This paper proposes an optimal power flow (OPF) framework in presence of grid scale energy storage system(s) in electric grids. It evaluates the impact of centralized storage versus distributed storage in OPF framework. Proposed OPF formulation includes a detail storage model to asses it's loss of life and associated cost due to frequent charging and discharging. Storage devices are optimally used...
Distributed energy resources (DER) based micro grid and Nano-grid framework is most technically viable bottom-top approach to sustainably meet ever-increasing demand of rural and urban communities. Recently the growth of DC operative home appliances like mobile and lap top chargers, ovens and hair dryer's etc. are increasing and therefore a DC/DC converter is an efficient way to meet the electricity...
This paper proposes a method to determine the optimum Battery Energy Storage System (BESS) size, considering how the location of BESS affects the micro-grid and analysis of power loss for the consideration of different locations of BESS. The possibility of installing an optimum BESS as the distributed BESS at different locations is proposed. Artificial neural network (ANN) was established to evaluate...
This paper analyses the performance of a Q-f droop based anti-islanding protection (AIP) scheme when the islanded circuit contains both inverter based DG and directly connected synchronous generator (SG) based DG. It is found that the performance of the AIP method is significantly degraded when SG is present in the island. This is because frequency cannot be directly manipulated by injecting reactive...
This paper presents research on adaptive overcurrent protection by considering critical clearing time (CCT) for a microgrid system (MGS). The studied case is located in Mae-Sariang district, Chiang Mai province which is a remote area. It is composed of many kinds of user loads, an energy storage system and distributed generations (DGs). When faults occur while MGS is performing in the grid-connected...
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