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A complete secondary system can be split concerning the engineering responsibility into different parts. Example is separate engineering of line operation interlocking between substations. This paper presents a new approach to line operation IEDs engineering with exchanged information between substations, which is compatible with IEC 61850. In this paper, Architecture of Line Operation between substations...
The worldwide demand for Advanced Meter Infrastructure is growing. Smart Meter manufactures and electric utilities have to rely on third party developers to realize the promised potentials of Smart Grid. Smart Meters come with wireless communication capabilities and they are manufactured according to international standards. Third party application developers must understand the details of meter interval...
Smart substation is an important foundation and pillar of strong smart grid. This paper describes the definition and characteristics of Smart substation, study the smart Substation system, introduced the smart substation main technical characteristics, describes the smart substation smart application of smart substation, finally, it prospects the application of smart substation.
This paper introduces a new tool for analyze Smart Grid standards, IEC mapping chart. Using it will for the first time allow standard users to connect the subtleties of all relevant standards and identify overlaps and gaps. Result show significant improvement over previous efforts. The work presented here has profound implications for future studies of Smart Grid deployment and may finally solve the...
As an important basic node of strong smart grid, smart substation is an important part of construction of smart grid. Compared with conventional substation, smart substation adds intelligent terminal, merging unit, electronic instrument transformer, on-line monitoring and other primary intelligent equipment, which increase the construction cost considerably. Moreover, the application of sequential...
IEC 61850 is an international standard for electrical substation automation that will significantly improve the design and construction of electrical power systems in the future. In 2010, the United States National Institute of Standards and Technologies (NIST) has recognized IEC 61850 as one of the key enablers for Smart Grid implementation. As the public electric utility company in Malaysia, Tenaga...
Photovoltaic generation (PV) output power varies depending on the time, weather, and season. Especially, PV output power can be low in the night or under bad weather conditions. In these cases, an electric vehicle (EV) battery can serve as a substitute for the storage system, and enables to attain in-house generation power continuously regardless of these bad conditions. In this study, we constructed...
Bidirectional or two way power flow based centrality measure has been implemented in bulk and smart power transmission systems. Proposed model can identify critical nodes from the system whose removal would affect the system severely. A combination of two models has been adopted to capture the power flow scenario of smart grid. Impacts of removal of critical nodes have been analyzed in terms of increase...
Construction of smart grid pilot projects was started by SGCC in May, 2009. As a key basic node of robust smart grid, smart substation is important for smart grid construction. Assessment of smart grid pilot projects was started by SGCC in March, 2011. Assessment index system for pilot projects of smart substations is built, combined with development of smart substation technology of China, based...
The large-scale operation of electric vehicles is the inevitable tendency of automobile industry. The great number of electric vehicles putting into the grid provides a mobile energy storage power station which is a developing direction of smart grid. However, both the charging and discharging procedures of electric vehicles can detrimentally impact the performance of the distribution grid. This paper...
In this paper, planning of a grid-connected smart micro-power system is investigated. At first, its Advanced Metering Infrastructure (AMI) is designed to record, process and communicate the micro-grid energy, electrical data (e.g., active and reactive power flow data, voltage, frequency etc.), wind speed, solar radiation and so on, which are sent to the Data-Processing and Management center (DPMc)...
Smart grid as the next generation of the electricity infrastructure has been already widely in study and pilot implementation in China, part of the project has initially formed a small electricity information center, but for valid mining power usage information to monitoring and early-warning for smart grid electricity users, there is no effective platform. Smart grid power monitoring and early-warning...
The paper introduces the development of relay protection technology in recent years, exemplifies the several stages of relay protection and characteristics by combining electric power technology and renewable energy development. The new development of relay protection technologies are presented, such as fault component based on novel protection algorithm, adaptive relay protection, travelling wave...
Due to the increase new boundary conditions of the distributed generation, distributed storage, diversity of load and user demand side response in smart distribution park, the traditional park planning method, integrated technology and operation control technology is no longer to adapt to the new requirements. According to analysis the implementation key technology of smart distribution park, give...
In recent years, facing of growing pressure on resources and the environment, the inevitable choice is to improve the traditional energy efficiency and vigorously advance the renewable energy development. At the aspect of technology, distributed generation (DG) technology which deploys renewable energy sources gives an effective technical approach. With the level of penetration of distributed generation...
In this paper we address the distributional effects of costs and benefits of real-time pricing (RTP) schemes in future smart grid system. We first present an optimal RTP scheme which is based on two-layer optimization processes performed separately on consumer side and retailer side of an electricity network for social welfare maximization. We further proceed to classify consumers based on their load...
Along with the development and construction of smart grid and smart substation, the research on the electronic current transformer develops deeply. In order to achieve the measuring requirements of high accuracy and broad range, a new design of combined electronic transformer is proposed in this paper based on the analysis of current technology; the waveform smooth algorithm is adopted to solve the...
In the development course of smart grid, risk evaluation can be applied for smart grid to lead the decision maker to achieve scientific plan, so that blind investment and significant risk loss may be avoided. Aiming at the reasons and benefits of risk management for smart grid in this paper, firstly, different risk of smart grid can be identified from five aspects, including financial risk, security...
This paper presents the worldwide developments of superconducting magnetic energy storage (SMES) devices. The application solutions of SMES technology for future smart grids are further discussed. The application topologies and advantages of SMES for micro grids, transmission and distribution systems are briefly described. The application scheme of hybrid energy storage systems (ESSs) and distributed...
This paper built the optimal multipart pricing model for the medium and small electricity customers applying with nonlinear pricing theory. This pricing model reflected the differences in demand characteristics between customers through differential pricing for different incremental purchase to guide the users to change the power consumption model, which could improve economic efficiency of pricing...
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