kv区域性降压变电所一次系统设计外文翻译

1、110 kV substations digital transformation case analysisAbstract This paper briefly introduces the basic concept of digital substation, Analysised substation digitization reconstruction examples based on 110 kV substationsA. detailed analysised of the substation secondary equipmentsuch as changes in

2、operating mode.Digital Substation discussed possible options for reform, and according to the results of the operation of digital substation work out countermeasures and Recommended.Key words digital substation 。 automation。 Electronic TransformerWith automation and computer network traffic monitori

3、ng and protection technology, the rapid development in Past two decadeshas made substantial progress has been achieved for the digital substation automation system . Network laid the technical foundation for fulfilling the other hand, with the special high-voltage large-capacity .The gradual formati

4、on of large scale grid, the grid stable and reliable control of the safety information exchange ， And put forward higher requirements of the urgent. Digital Substation substation construction will be Trends .1. the characteristics of digital substationThe basic features of digital substation can be

5、summarized as: intelligent primary equipment, secondary equipment network, automated operation and management system. Since the station relative to conventional integrated, digital substation equipment, the protective principle, the internal algorithm, logic has not fundamentally changed, but in sam

6、pling digital, networked communication medium, communication interface standardization brought changes to improve the reliability of substation automation system. Reliability of information transmission can be achieved。 secondary wiring is simple。 measurement accuracy。 share unified information plat

7、form, reduce duplication of equipment 。 easy functionality expansion。 management automation.2. 110 kV Substation rehabilitation programs1 a part of. 110kV single busbar sub-main wiring methods, 110kV line 3 times, with a standby power source。 the main volume into 2 sets of 3 variables 。 35kV main co

8、nnection method for the Single Bus, 35kV line 5 back。 10kV main connection is a single busbar way, 2 sets of capacitors, 10kV line 18 back, 2 sets of ground change, the replacement of transformers for the electronic, installation of PT parallel combiner。 replacement in situ terminal box, installatio

9、n switches intelligent unit, to achieve local control switch 。 configuration integrated digital protection monitoring devices and digital power meter, equipped with digital standby power source device, care monitoring devices and focus group screen interval of combiner.2 station control layer. Stati

10、on control layer consists of a units monitoring host, 2 Machines GPS communications management component to form the station control level star network, monitoring the host machine automatically selects the host communication management, communication management unit and the interval as an independe

11、nt link layer device, and the bay level devices communication, access to remote, telemetry data, only the host with the remote authority, communication management unit interval of five anti-blocking cross-sequence and function of small1 / 8current grounding line, for the interval layer and process l

12、ayer device when the hard right.3 spacer. Interval layer is the core of the station automation, communications related to the implementation of the process level GOOSE 35kV, 10kV lines, capacitors, ground change, sub-protective and monitoring local installation 。 110kV Main Transformer Protection an

13、d Control focus group back screen, installed in the control Room, located optical interface screen, providing the distance to the control room of the optical conversion interface。 three sides of the main transformer backup protection one, 110kV segmentation and one prepared from the cast。 monitoring

14、 interface communication, lockout protection association。 private GOOSE network to achieve important, the key trip control, station control layer GOOSE network, to achieve control of auxiliary tripping minor, such as the low cycle load shedding.4 the process level. Parallel combination provides volt

15、age voltage, the output interval of combiner to provide the voltage signal。 the main transformer and back of each side of the differential transformer is divided into, setting separate combiner, combiner transformer transformer protection group in the main screen。 110kV line segment combiner configu

16、red individually, group within the control room screen line combiner。 35kV 10kV PT 1 set of each combiner configured to achieve PT parallel functions。 arranged in the sub-cabinet。 35kV 10kV part of the access by small-signal combiner, arranged in switch cabinet.5 communication network. a. station co

17、ntrol station control interlayer layer network layer network: set a switch, the Internet communications management unit monitoring host dual GPS。 interval layer network: at 10kV I Section II Section were placed on a switch, 35kV put a switch in paragraph , the main cabinet to set up a communications

18、 switch, focus group screen spacer device to the communications network of the main cabinet b. the process level, GOOSE private network. Process layer network: electronic transformer CT interval of combiner access, electronic access to the voltage transformer PT merger, voltage output access interva

19、l of combiner combiner 。 GOOSE Network: ring network composed of 1 # Main Variable interval Protection and Control and smart cell group into a RSG2100, 2 # Main Transformer Protection and Control and intelligence unit interval group into another RSG2100, 110kV line interval of Protection and Control

20、 and intelligence unit set into another RSG2100, composed of a single inter-switch interconnect ring.6 After the transformation of the substation has the advantage. a. back-office system integration, are in compliance with requirements of the secondary consolidation。 b. with 61850 protocol, consiste

21、ncy, and simple interface without a lot of signal cable installation and commissioning work is small, can reduce the cost of maintenance and renovation。 c. use of electronic CT / PT, non-core, eliminating the magnetic saturation。 to avoid the CT open circuit, earth fault in the secondary circuit pro

22、blems。 d. long-distance transmission of digital signals using optical fiber, anti-interference ability, reducing the transmission error。 of nearly still use the hard-wiring from the transmission, reducing the number of devices to simplify structure.substations protection equipment remote monitoring

23、and management systems analysis and design2 / 81 substation protection equipment remote monitoring and management system The system for power companies to protect managements application requirements designed to protect the department aims to provide a management and maintenance of station equipment

24、 platform, the system should meet the following features: timely, accurate collection of station equipment, real-time information。 accurate monitoring of all setting relay station changes, and timely warning。 comprehensive management of all the relay stations recorded data。 provides engineers easy a

25、ccess to any virtual channels to all relay stations。 provide a friendly user interface for maintenance and management。 Accurate and fast data retrieval and query。 high level of security, strict management of operating authority and provides audit function。 system has a high scalability, maintainabil

26、ity 。 system is stable, safe and reliable。 good man-machine interface According to the actual needs of the application of the hierarchical principle and open systems, the whole system is divided into enterprise application layer, service layer, station control management and equipment level.Station

27、control stations relay data subsystem is responsible for the collection, processing, valuation and management functions include the following modules: RTDB: RealTime Database, real-time data management, systems management as the core of the system responsible for managing all of the real time data,

28、events, police records。 HMI: HumanMachine Interface, local display and control management。 DCAl03: DataCollectionApplicationwithIECl03, IECl03 communications processing, complete with support IECl03 relay communications between the Statute, to collect real-time data sent to relay real-time database。

29、 as Support 103 for the relay setting and recorded data, the corresponding value for management。 Courier: CourierDCA communications processing, complete with relay communication between the relay real-time data collection, event data, protection setting , recorded data。 Modbus: ModbusDCA Statute of

30、the communication processing。 DNP30: DNP3.0 DCA Statute of the data processing。 GD8Calc: GD8-line basis, to provide advanced automatic calculation and automatic control functions。 VC: Virtual Connection Manager, providing a virtual channel with the server connection and, if necessary, send a request

31、 to the DCA loan communication channel。 DNPDPA: DPA (DataProces sApplication type applications, communicate with the server through DNP3.0 statute.This subsystem is responsible for the data collection points, and saved to the server SQLServer database, including the following modules: DC: DataCollec

32、tion application station control subsystem is responsible for communication and exchange through the DNP3 0 real-time data and event data, and to the real-time data。 RTDB: real-time data management, including real-time data management, and a variety of real-time data access interface (shared memory

33、TCP IP database, and save the historical database, to provide lock control。 user management: Manage user roles, password, operating privilege, etc。. role management, managerial role and define the appropriate authority。 configuration management: management station data and communication within the p

34、arameters and alarm configuration (SMS GSM EMAIL 。 graphics production system: user-defined interface production system。virtual serial port, virtual channel dynamic management。 event query Modules:3 / 8Alarm query module, the station data query module: check the communication relay stations within t

35、he state of constant change state, recorded data。 constant query module。 Virtual Connect modules。 single line diagram: a graphical user interface provides real-time data Display operation control, etc。. historical data query。 audit module。 operational records check.2 database design systemMonitoring

36、 and management system for the protection of the core is around the station designed to protect the information data, the database design directly related to the effect and operation of the whole system performance, while the database system to other computer systems, with more objects, longer survi

37、val data, with high requirements on the maintenance and security of the information related to such issues, so the database design must be carefully and cautiously database design for this system, we propose the following four basic principle to guide the design of the database :a, try to ensure the

38、 simplicity of the database, including: simple database structure, data sheets and data sheet design simple relationship between Q and other simple b, to ensure the integrity of database systems, including: the physical integrity of the database system, database, logical integrity, the integrity of

39、the elements of the database systemc, to ensure the confidentiality of the database system, including: the database system, the user identity and authority to identify, to ensure that each user and their access to the system is legitimate and can be identified in the design of the time so we can the

40、 body of the user identification and access rights to control the system provides the user can only operate within the purview and ensure the security of system datad, to ensure the availability of database systems, which ensure that the database can access system resources, easy to use and to avoid

41、 data conflicts in the data access process, to ensure no conflict between the data and contradictions in this system, the server database used relational database, and use Microsofts SQL2005Server name of the database design is MinilPACS, stored data are historical data configuration information and

42、 event information data, user information configuration data using MS Acces s database, download the station controlled by synchronizing Equipment GD8 can be converted into the CDB CE data formats, and through the papers to copy or synchronize GD84. the operation of digital substationDigital substat

43、ion system to achieve the full hierarchical distributed application。 first and second device to achieve effective electrical isolation, interoperability between devices。 information integration has increased, reduce the number of automation equipment。 station electrical quantities collected United b

44、locking signal transmission and equipment trip command to run all through the fiber optic networks。 has a higher than conventional automation system reliability, availability, security。 substation automation system is to ensure that primary and secondary equipment, the normal operation of the core,

45、daily operation and maintenance should be given more attention to the information prompted to run equipment。 concern communication device alarm interrupt event log information tips。 concerns real-time4 / 8monitoring and control console prompt warning information。 network communication interruption s

46、hould check the device prompt the switch state of communication lines。 case no display device, it should ascertain whether the loss of power outage, such as the reasons for withdrawal should be identified and then put into operation。 after power should conduct a comprehensive inspection to confirm i

47、nstallation of the normal operation after running the program is another advantage of the current digital 110kV substation south of change remote operation can be achieved has been the general order of the control and operation (programmed operation program of the operating system is pre-set through

48、 the automated process operation of the substation equipment series, issued by the operating instructions is to grant an order by the automated system based on equipment corresponding changes in the amount of remote telemetry to determine the letter of each step is in place, the case confirmation in

49、 place the next step, otherwise the alarm.Conclusion110kV substation digital transformation projects to explore the application of the old station digital transformation technology solutions, to explore the advanced practical and reliable digital substation system structure and model, reflecting the

50、 advanced technology, structure is reasonable, program innovation, practical implementation, to the role of models and model for future digital substation reconstruction provides a new and valuable experience for reference.5 / 8摘要 本文简要介绍了数字化变电站的基本概念，110 千伏数字化变电站改造的例子。详细的分析，如改变经营模式的变电站二次设备。数字化变电站讨论可能

51、的改革方案，并根据数字化变电站工作了对策和建议的运行成果。关键词 数字化变电站 ,自动化，电子式互感器自动化和计算机网络流量监控和保护技术，在过去二十年的飞速发展有了长足的进步，已实现数字化变电站自动化系统。网络奠定了技术基础，另一方面，用特高电压大容量的大型电网的逐步形成，电网稳定和安全信息交流的可靠控制，并迫切提出更高的要求。数字化变电站的建设将成为趋势。1。数字化变电站的特点数字化变电站的基本特点可以概括为：一次设备智能化，二次设备网络化，自动化操作和管理系统。由于传统的变电站相对集成化，数字化变电站设备，保护原则，内部算法，逻辑并没有根本改变，但在采样数字化，网络通信介质，通信接口标准

52、化带来的变化，以提高变电站自动化系统的可靠性。可以实现信息传输的可靠性。二次接线简单，测量精度。共享统一的信息平台，减少设备的重复，便于功能扩展管理自动化。2。110 千伏变电站自新计划1）一次部分。110 千伏单母线分主接线方式，备用电源，110kV 线路的 3 回，到 2 套 3 个变量的主音量。 35kV 及以下的单母线主要连接方式， 35KV 线路 5 回， 10KV 主接线是一个单母线方式，电容器 2 套， 10kV 线路 18 回， 2 套地端子箱，更换变压器，电子，安装PTPT 并列合并器。更换就地接线盒，安装开关智能单元，实现本地控制开关。配置集成数字保护监控设备和数字功率计，

53、配备数字备用电源设备，保护监控设备和焦点组合屏幕的电压信号。2）站控层。站控层由一个单位的监控主机， 2 台的 GPS通信管理组件，形成站控制层星型网络监控主机自动选择主机的通信管理，通信管理单元作为一个独立的链路层设备的电压信号，间隔层设备通信，遥控，遥测数据，只有主机与远程机，通信管理五防无阻塞交叉序列和功能的小电流接地线，间隔层和过程层设备时，硬盘的对时。3）间隔层。间隔层站自动化，GOOSE35 千伏， 10千伏线路，电容器，接地的变化，保护和监控本地安装进程级的实施涉及到通信的核心。110 千伏主变压器保护和控制的重点组安装屏幕的背面，中控室，位于光纤接口屏幕，提供光转换接口控制室监

54、控通信接口，闭锁保护关联。三个主变压器后备保护，110KV 分割和演员都准备了一份双方的距离。民营的 GOOSE 网络，实现重要的，关键的行程控制，站控层的GOOSE 网络，以实现控制轻微，如低的周期跌负载辅助跳闸。4）过程层。电压合并器提供电压并列功能，提供的电压信号合成器输出的电压信号。主变压器差动变压器两侧分为，设置单独的合并，合并器变压器保护组在主屏幕。110kV 线路段合并单独配置，在控制室的屏幕行合组35KV10kV 的 PT1 套每个合成器配置为实现PT 并行功能。次内阁中安排。35 千伏 10KV 部分由小信号合成的访问，安排在开关内阁。4）水平的过程。并联组合提供的电压下，提

55、供的电压信号合成器输出的电压信号。主变压器差动变压器两侧分为，设置单独的合并，合并器变压器保护组在主屏幕。110kV线路段合并单独配置，在控制室的屏幕行合组35KV10kV 的 PT1 套每个合成器配置为实现PT 并行功能。次内阁中安排。 35 千伏 10KV 部分由小信号合成的访问，安排在开关柜内。5）通讯网络。 A. 站控层间隔层网络：设置一个开关，互联网通信管理单元监控主机双GPS。间隔层网络：分别在10kVI 段 II 段分别放置一台交换机，35KV 开关段中，主要柜设立一个通信交换机，集中组屏间隔设备的通信网络的主要柜。B。工艺水平，鹅专用网络。6 / 8过程层网络：电子式互感器CT

56、 合成器接入区间，电子电压互感器PT 合并，输出电压合成器合成的访问间隔的GOOSE 网络： 1主变间隔保护和控制，成为一个智能电池组组成的环网 2 RSG2100，主变压器保护到另一个RSG2100的控制和情报单位间隔组，110KV 保护和控制线和情报单位间隔设置成另一个RSG2100组成一个单一的交换机间的互连环。6）具有优点，改造后的变电站。a。后台系统集成，符合的次固结的要求。b。采用 61850规约保持一致，接口简单，没有很多信号电缆安装和调试工作是小，可减少维修及翻新成本。使用电子的 CT / PT，非核心，消除了磁饱和。避免的 CT 开路，在二次回路接地故障问题。长途传输数字信号采用光纤，抗干扰能力强，降低了传输错误。几乎仍使用从硬布线的传输，减少设备数量，简化结构。3、变电站保护设备的远程监视与管理系统分析与设计1）变电站保护设备的远程监控和管理系统在电力公司系统保护管理的应用程序，旨在保护部门要求提供1 管理和车站设备平台的维护，系统应该满足了以下功能：及时，准确收