Micro-grids - Applications, Operation, Control and Protection最新文献

Micro-grids - Applications, Operation, Control and Protection Pub Date : 2019-06-14 DOI: 10.5772/INTECHOPEN.86431

M. Ramamoorty, S. Lalitha

{"title":"Microgrid Protection Systems","authors":"M. Ramamoorty, S. Lalitha","doi":"10.5772/INTECHOPEN.86431","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.86431","url":null,"abstract":"Micro grids are miniature version of conventional large power grids functioning either autonomously or with inter connection to the main grid. Primary function of micro grid is to serve power at distribution level. Distributed energy resources (DERs) connected to the micro grid enables reliable and efficient operation of micro grid. Protection of micro grids assumed importance due to increased penetration of distributed energy resources. Most of the distribution systems in earlier days are radial in nature and protection systems are designed for that. These protection systems pose serious challenges when applied to present day distribution systems which are mesh connected and fed by the distributed energy resources. Limitation of the conventional protection scheme demands new insights and methodologies for micro grid protection. Due to intermediate current injection from DERs the conventional coordination of over current (O/C) relays is not possible. Further in meshed systems the fault current flow is bidirectional. Hence the protection of micro grid systems with DERs require different approach to ensure faults are cleared in less time and minimal number of consumers connected to the system are affected. A comprehensive analysis of the suitable techniques applicable for micro grid protection is presented in this chapter.","PeriodicalId":121407,"journal":{"name":"Micro-grids - Applications, Operation, Control and Protection","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125491216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Microgrid Application in Algeria Saharian Remote Areas 微电网在阿尔及利亚撒哈拉偏远地区的应用

Micro-grids - Applications, Operation, Control and Protection Pub Date : 2019-06-14 DOI: 10.5772/INTECHOPEN.86352

M. Khiat, Sidahmed Khiat, M. Mankour, L. Ghomri

引用次数: 0

Innovative Differential Protection Scheme for Microgrids Based on RC Current Sensor 基于RC电流传感器的微电网差动保护创新方案

Micro-grids - Applications, Operation, Control and Protection Pub Date : 2019-05-13 DOI: 10.5772/INTECHOPEN.85473

A. Abdulwahid, A. Ateeq

{"title":"Innovative Differential Protection Scheme for Microgrids Based on RC Current Sensor","authors":"A. Abdulwahid, A. Ateeq","doi":"10.5772/INTECHOPEN.85473","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.85473","url":null,"abstract":"The modern power system and future ones include several intelligent devices. It also integrates renewable energy sources, energy storage, energy microgrid control system, hybrid networks, and smart grids with the wide application of information technology and communication. The most crucial goal in the smart grid application is improving safety reliability within the network. Recent studies have recommended the development of smart grid technology that enhances the reliability of electric power systems increases efficiency and improves the detection of faults for protection; this will reduce the duration of interruption of the number of customers affected by the outages. Moreover, smart grid technology decreases the power loss of energy usage and improves the efficiency of the system. And protection is one of the most important challenges facing smart grid deployment. In this chapter, protection for smart grids using differential relays is presented. The differential scheme is a very reliable method of ensuring the safety of protected areas. This chapter discusses the differential relay parameters with various fault conditions. Therefore, the protection scheme affirms the rapid separation of the fault zone to reduce damage to the equipment. The simulation results show that the method is effective and reliable.","PeriodicalId":121407,"journal":{"name":"Micro-grids - Applications, Operation, Control and Protection","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123623100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of the Main Requirements and Characteristics Related to the Implementation of a Residential DC Microgrid 住宅直流微电网实施的主要要求和特征评估

Micro-grids - Applications, Operation, Control and Protection Pub Date : 2019-02-15 DOI: 10.5772/INTECHOPEN.84413

L. El-Leathey

引用次数: 1

Power Quality Improvement of a Microgrid with a Demand-Side-Based Energy Management System 基于需求侧能源管理系统的微电网电能质量改善

Micro-grids - Applications, Operation, Control and Protection Pub Date : 2019-02-01 DOI: 10.5772/INTECHOPEN.83604

Gaspard d’Hoop, O. Deblecker, Dimitrios Thomas

{"title":"Power Quality Improvement of a Microgrid with a Demand-Side-Based Energy Management System","authors":"Gaspard d’Hoop, O. Deblecker, Dimitrios Thomas","doi":"10.5772/INTECHOPEN.83604","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.83604","url":null,"abstract":"This chapter addresses the power quality of grid-connected microgrids in steady state. Three different power quality issues are evaluated: the voltage drop, the harmonic distortion, and the phase unbalance. A formulation for an energy management algorithm for microgrids is proposed under the form of a mixed-integer linear optimization including harmonic load flows. It handles both the optimization of the scheduling of all the generation, storage, and load assets, and the resolution of power quality issues at the tertiary level of control by adjusting the levels of certain types of loads within the system. This algorithm is simulated for different scenarios on a conceptual test-case microgrid with residential, industrial, and commercial loads. The results show that the demand-side management mechanism inside the algorithm can adapt efficiently the consumption behavior of certain loads, so that the voltage drop, the voltage total harmonic distortion, and the voltage unbalance factor meet the required standards at every node of the microgrid during the day. It is also highlighted that the microgrid can gradually reduce the purchase of power from the utility grid to which it is connected if the electricity price on the spot market increases.","PeriodicalId":121407,"journal":{"name":"Micro-grids - Applications, Operation, Control and Protection","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132804955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Microgrids: Applications, Solutions, Case Studies, and Demonstrations 微电网:应用，解决方案，案例研究和示范

Micro-grids - Applications, Operation, Control and Protection Pub Date : 2019-01-21 DOI: 10.5772/INTECHOPEN.83560

Edward J. Donahue

引用次数: 3