文献翻译 Running Analysis of Substation Integrated AutomationSystem in Unattended

Running analysis of substation integrated automation system in unattended Gao Yongxin1 a 1 School of mechanical engineering Liaoning Technical University Fuxin123000 Liaoning China agaoyx1126 Keywords Substation Automation system Run status Abstract Is Automation technique in substation integrated automation for substation applied a concentrated expression was unattended substations necessary technical conditions on integrated automation principle of analysis in the article simultaneous analysis of control into the centralized control of unattended substation and grade control focusing on analysis of unattended substation communication networks and make recommendations on the communication engineering mode for unattended substation 1 Introduction Unattended substation in accordance with the design of unmanned substation automation technology in the provision of definitions unmanned substation is local no fixed watch for daily monitoring and operation of the substation it belongs to a substation operation mode Unattended was accompanied by science and technology development of electric power industry and produced a new type of substation operation mode in this operation mode the advanced technology component it contains the analysis of industrial automation artificial intelligence communications and other kinds of advanced technology of Crystal which is a corollary of the general law of scientific development as a result of it is welcomed by the power system due to its many advantages Substation unattended is by no means a simple technological transformation but with the dispatching automation of substation operating management hierarchical control and substation automation level and a series of interrelated systems must be a local or a network within the General design of unmanned substation work bearing in mind the implementation of unattended substation equipment Function and configuration of integrated substation automation system in unattended should meet the General requirements of unmanned the optimum structure and powerful automation capabilities centralized control centre in a timely manner the action teams provide detailed information and scheduling personnel both of the normal running security monitoring and control functions 2Unmanned substation integrated automation principle analysis Is Automation technique in substation integrated automation for substation applied a concentrated expression is the necessary technical conditions for unattended substation Substation automation system can receive a very complete data information Strong computer skills and logic skills and easily monitor and control device in substation equipped with superior communication functions of the dispatch and control centre able to telemetering remote letter remote control remote setting you can not only improve the overall skills of unmanned stations security and stability provide a Applied Mechanics and Materials Vols 316 317 2013 pp 145 148 Online available since 2013 Apr 10 at 2013 Trans Tech Publications Switzerland doi 10 4028 All rights reserved No part of contents of this paper may be reproduced or transmitted in any form or by any means without the written permission of TTP ID 140 116 207 56 National Cheng Kung University Tainan Taiwan 27 04 14 16 31 27 reliable guarantee for substations Unmanned substation integrated automation system and general automation differs from automated systems as a whole protection monitoring and control functions Integrated automation system through the application of advanced technologies substation relay protection remote control measurement signal system and local monitoring integrated as one increasing integration forming a comprehensive secondary device instead of the regular principles Substation microcomputer protection unit as a separate function not under the influence of other aspects of the monitoring system set tripping close execute and monitor system relays and sampling system to both independent and interaction principles Fault diagnosis of substation subsystem should be independent and self recovery function if any part fails should send a warning indicator informs the monitoring host and rapid diagnostic information to the control center to systems with high reliability and strong anti jamming ability principles 3 Analysis of structure of integrated substation automation system in unattended Unmanned substation operation maintenance and operations management of substation operating management is in principle follow the General provisions after realization of unmanned substation must set up a centralized monitoring centralized control station and unattended substation personnel responsible for unattended substation Control into the centralized control of unattended substation and grade control centralized control of small number for need remote control unmanned substation scheduling dispatch end substation control structures directly RTU collected information directly to schedule unattended substation end systems Hierarchical control applies to require remote control number of scheduling unattended substation dispatch end control station substation control structure As automation technology at home and abroad continue to improve unmanned substation automation systems are constantly improved its structure is mainly composed of centralized hierarchical decentralized three models constitute 3 1Integrated automation system for centralized Centralized structure is in the form of integrated automation system in accordance with the scale of the substation configuration microcomputer protection and monitoring host capacity functionality data acquisition system installed in the substation main control room System data processing is centralized configuration of hardware devices used by front and back body of centralized structure completed by front end computer data input output protection control and monitoring functions back complete features such as data processing display print and remote communication All information required to process through the communication manager or front Integrated automation system of this predecessor machine heavy lead issues centralized information structure is a bottleneck reducing the reliability of the system as a whole 3 2Hierarchical distributed comprehensive automation system Hierarchical distributed architecture of unattended substation integrated automation system can be divided into intervals station control management layers and layers of connections between network communication layer its main feature is designed according to substation components switching interval Substation switching intervals the need of full data acquisition protection and control features such as by one or a few Intelligent measuring and controlling unit IED Hierarchical management models to the management of substation integrated automation system various functional units directly managed by the management that corresponds to the machine between the unit through the fieldbus connection constitutes a spacer layer In accordance with different voltages electrical interval units different control objects configure the appropriate 146Energy Engineering and Environmental Engineering functional unit At the station control or communication network under fault conditions the spacer layer is still able to complete the interval level monitoring and control capabilities All devices in the control layer and the spacer layer on all of the devices directly connected to the Ethernet station control layer with the spacer layer directly between devices using Ethernet communications Personnel dispatch personnel on duty substation monitoring control and management capabilities the entire substation monitoring measurement control and management of intelligent Center with five preventions system of microcomputer network interfaces and reserving equipment online monitoring and fault diagnosis system and remote control system for network interfaces 3 3Fully distributed comprehensive automation system Fully distributed comprehensive automation system in accordance with the electric circuit or electric interval unit oriented approach to design completely distributed substation integrated automation system structure the spacer layer in the data collection monitoring and protection unit together designed within the same chassis and scatter a chassis in place installation in switch cabinets or other equipment nearby This interval unit of equipment independent of each other only by optical fiber or communication network controlled by station management and exchange of information on them Totally integrated automation system of distributed distribution features and combination of physical dispersion of organic realize the function of the unit of the interval is not dependent on communications networks and independent This structure represents a modern substation automation technology development trends 4 Unmanned substation communication network analysis Communications network is constitute no watch substation automation system key links internal communications network of standard is substation automation standardization of difficulties one by performance price and software and hardware and user using situation many factors of effect while in no watch substation integrated automation system in the data communication is a important links main task covers has no unattended substation integrated automation system internal all subsystem or various features module between information exchange area 4 1Communication network unattended substation As no unattended substation of construction and development and the automation level of improve General far East system will is Fusion has computer and protection and control and network and communications technology Yu one of network of automation system by instead of grid of far dynamic system covers has whole station within of large automation system far dynamic information of collection will set type collection to distributed collection of direction development and large to application has CANBUS and LONWORKS and PROFIBUS PROFIBUS DP and ETHERET local area network technologies In unmanned substation monitoring system telecontrol function in accordance with the functional and performance requirements of telecontrol equipment configurations to meet the size requirements of unattended substation data acquisition devices Schedule or control center the information you need sent directly by the data acquisition device Telecontrol Protocol in meeting subject to the corresponding master station communication protocol should actively adopt international standard communication protocol 4 2Side collection of the monitoring system in unattended substation Unmanned substation monitoring system all I O data acquisition device or interval unit through the serial port or fieldbus link predecessor communication unit communication and monitoring system scheduling or set control center the information they need from the front after a communication unit summary telecontrol communication protocols through their own set to Applied Mechanics and Materials Vols 316 317147 schedule or control center Telecontrol communication protocols can use the appropriate schedule or control center master station communication technology Statute statute of the General IEC60870 5 101 IEC61850 which is suitable for unattended substation reconstruction project 4 3Station control layer communication station No watch substation monitoring system interval layer of data acquisition device is responsible for collection station within monitoring and the far dynamic by needs of information and to station controlled layer of LAN Shang transfer communications workstation is responsible for summary scheduling or set controlled Center by needs of far dynamic information and in accordance with Department Award DL476 1992 power system real time data communication application layer technology agreement under or IEC61850 Statute by router or data network of IP equipment sent to scheduling or set controlled Center in accordance with far dynamic information straight mining straight received of principles Telecontrol information cannot be dealt with through station control hosts but rather from the control unit over communications station to schedule or control center of a direct data link guarantee of telecontrol information in real time automatic mode for this mode is suitable for hydropower station monitoring and control system 4 4Unmanned substation network for telecontrol data communication modes Unmanned substation direct Ethernet access mode This mode is suitable for new unmanned substation It requires Ethernet interfaces and the corresponding to the RTU protocol support IEC104 Unmanned substation gateway access mode which application has been put into unattended substation Can reduce substation secondary equipment investment simply added on to in the original basis of RTU gateway to access network which is the key to gateway RTU serial port and gateway end connected to the serial port gateway Ethernet interface on the other end plugged into the network Unmanned substation for RTU RS485 bus connection on the IED 485 bus through one gateway for all IED RTU network TED share a single IP address on the bus sys