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GB/T 44786-2024: Guide for computer-based control for hydroelectric power plant automation
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GB/T 44786-2024: Guide for computer-based control for hydroelectric power plant automation

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ICS 27.140 CCSK55 National Standard of the People's Republic of China Guidelines for computer control of hydroelectric power plant automation (IEC 62270.2013, MOD) Released on October 26, 2024 Implementation on October 26, 2024 State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III Introduction V 1 Scope 1 2 Normative references 1 3 Terms, Definitions and Abbreviations 1 4 System Architecture 4 5 Control Functions 9 6 Data Collection and Processing 17 7 Communications and Databases19 8 User interface and power plant interface 28 9 System Performance 32 10 System backup capacity 36 11 On-site integration and support systems 38 12 Recommended Test and Acceptance Criteria 40 13 System Management 42 Appendix A (Informative) Traditional Control Systems 45 Reference 47 Preface This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is modified to adopt IEC 62270.2013 “Guidelines for computer control of automation in hydroelectric power plants”. This document has made the following structural adjustments compared to IEC 62270.2013. --- Added Chapter 2 "Normative References" and the subsequent chapter numbers are postponed; ---3.1 corresponds to Chapter 2 of IEC 62270.2013; ---5.2.1, 5.3.1, 6.4.1, 6.7.1, 8.1.1, 8.2.1, 8.2.2.1, 8.2.5.1, 9.3.1, 9.6.2.1, 13.2.1 and 13.3.1 correspond respectively IEC 62270.2013, 4.2, 4.3, 5.4, 5.7, 7.1, 7.2, 7.2.1, 7.2.4, 8.3, 8.6.2, 12.2 and 12.3 suspension sections, Make the subsequent item numbers at the same level be postponed; --- The three items in 7.2.7.2.2 correspond to the three paragraphs in 6.2.7.2.2 of IEC 62270.2013; --- Appendix A corresponds to Appendix B of IEC 62270.2013; --- Added "References" and incorporated the contents of Appendix A "References" of IEC 62270.2013. The technical differences between this document and IEC 62270.2013 and their reasons are as follows. --- According to the requirements of GB/T 1.1-2020, the overview of Chapter 1 of IEC 62270.2013 is incorporated into the introduction of this document; Chapter 1 is applicable to large hydropower plants, small hydropower plants (unit capacity of 5MVA or less) are implemented by reference, and adjusted to apply It shall be implemented as a reference for large and medium-sized hydropower plants, cascade hydropower plants and small hydropower plants, and shall be consistent with relevant standards of my country. --- Deleted the description of IEEE Std 610.12 and IEC 60050-351 in the introduction of the chapter "Terms and Definitions". It has no practical significance in this document and is in line with the actual situation. --- Change "Data link. Communication between main system elements should adopt serial communication connection" to "Data link. Main system elements Communication between the two can be done by Ethernet link or serial communication connection" (see 7.2.5), which is in line with the current technological development Condition. --- Added 3.2 “Abbreviations” to facilitate the conciseness of the language of this document. ---In a digital control system, the data of the monitored equipment is transmitted to the data acquisition and control system through a communication link (or link) In digital control systems, the data of monitored equipment is transmitted through hard wiring and communication links (or links). Transmitted to the data acquisition and control system node" (see 7.2.6.1), in line with the actual situation of current technological development. ---Speech synthesis is sometimes used to provide speech-based audible messages to operators, but is not currently widely used in power plant applications. "used for" is changed to "speech synthesis is used to provide voice information to the operator" (see 8.1.3), which is in line with the actual situation of current technological development. ---The security requirements of future systems are changing rapidly, and this topic is considered a national security issue in various countries. Users should refer to the latest versions of their respective national regulations and standards for further assistance and information" is changed to "System design should be full Meet the requirements of the latest versions of my country's network and automation system security regulations and standards, such as GB/T 38318-2019 (see 8.3), in line with my country's network and automation system requirements and actual conditions. --- There is no universal standard for the operating time of the automation system after the loss of factory AC power, but the operating time is usually between 0.5~ 8 hours. "Change to "The operating time of the automation system after losing the factory AC power supply shall be implemented according to the relevant standards, and the operating time shall be "It is usually operated at full load for not less than 2 hours" (see 11.4), which is in line with the actual situation of current technological development. The following editorial changes have been made to this document. --- GB/T 17626.3-2023 replaces the informative reference IEC 61000-4-3; --- Deleted the informative Appendix C "IEEE Participant List". Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Technical Committee for Standardization of Hydraulic Turbines (SAC/TC175). This document was drafted by. Tianjin Electric Power Research Institute Co., Ltd., Guizhou Chuangxing Electric Power Research Institute Co., Ltd., China China Yangtze Power Co., Ltd., PowerChina Beijing Engineering Corporation, China Three Gorges Construction (Group) Co., Ltd., Hubei Qingjiang Hydropower Development Co., Ltd., Beijing Zhongshuike Hydropower Technology Development Co., Ltd., State Grid Shaanxi Electric Power Co., Ltd. Power Science and Technology Co., Ltd. Research Institute, State Grid New Energy Holdings Co., Ltd. Pumped Storage Technology and Economic Research Institute, Yunnan Water Conservancy and Hydropower Survey and Design Institute, Yunnan Province Water Resources and Hydropower Survey and Design Institute Co., Ltd., Huadian Electric Power Research Institute Co., Ltd., State Grid Gansu Electric Power Company, Xi'an University of Technology, Northwest Agriculture and Forestry University, Nengshida Electric Co., Ltd., Wuhan University, China Institute of Water Resources and Hydropower Research, Nanjing Nanrui Water Resources and Hydropower Technology Co., Ltd., Guizhou Wujiang Hydropower Development Co., Ltd. Shatuo Power Plant, Huazi Technology Co., Ltd., Chongqing Xinshijie Electric Co., Ltd., China Electric Power Engineering Consulting Group North China Electric Power Design Institute Co., Ltd., China Water North Survey, Design and Research Co., Ltd. China Hydropower Engineering Group Northwest Engineering Co., Ltd., China Water Resources and Hydropower No. 14 Engineering Bureau Co., Ltd., Xinjiang Water Resources and Hydropower Survey and Design Institute Co., Ltd., China Water Resources and Hydropower Construction Engineering Consulting Northwest Co., Ltd., China Water Resources and Hydropower Construction Engineering Consulting... Company, Northeast Electric Power University, China Gezhouba Group Third Engineering Co., Ltd., China Gezhouba Group Mechanical and Electrical Construction Co., Ltd., Shandong Peninsula Water Development Co., Ltd., China Power Construction Group Chengdu Survey and Design Institute Co., Ltd., Guangxi Zhuang Autonomous Region Water Conservancy and Hydropower Survey, Design and Research Institute Co., Ltd. Research Institute Co., Ltd., Guangdong Yuegang Water Supply Co., Ltd., China Water Resources and Hydropower No. 11 Engineering Bureau Co., Ltd., and Zhejiang Water Resources and Hydropower College. The main drafters of this document are. Mao Cheng, Zhou Tongxu, Ran Yichuan, Zhang Weili, Shen Chunhe, Li Zhiguo, Chen Zhongxin, Liu Xiaobo, Li Hua, Deng Lei, Yang Xianhua, Yan Ming, Zhen Wenxi, Yu Xiangyang, Chen Diyi, Wang Ruiqing, Cheng Yuanchu, Zhang Jianming, Shao Yixiang, Chen Yan, Xie Qiuhua, Wu Yuan, Yang Zhangbin, Zhu Di, Li Xudong, Qin Jun, Tang Chengjing, Gao Xiaoguang, Nan Haipeng, Xu Beibei, Rong Gang, Xiong Biwen, Su Li, Zhang Zhongya, Yang Yun, Zhou Wei, Cai Xi, Zhang Weijun, Zhao Ziwen, Cao Guangwei, Huang Wenbao, Sun Xiaojiang, Ding Lunjun, Peng Daixiao, Xiong Jie, Ren Zhaobao, Zhang Guanxiang, Lian Xueguang, Ma Zhijie, Zhang Limin, Ma Li, Wang Jianli, Chen Yudong, Ji Jianlin, Xu Long, Liu Jie, Shi Shuang, Jiang Rui, Wang Zhe, Wang Benhong, Wu Guoying, Xin Hongwei, Mao Huigang, Qiang Chen, Baojun Jia, Yong Xia, Gang Tang, Yingchun Li, Hao Wu, Shubin Yan, Haili Zhang, Jing Ma, and Shuman Wei.

introduction

The data recording, monitoring automation and automatic control functions of hydropower plants reduce the labor intensity of power plant operators and allow operators to More time to focus on other tasks. In most cases, automation can significantly reduce the operating costs of a power plant (primarily by reducing the number of employees). quantity), while the reliability of the power plant can continue to be maintained or improved. Automatic control systems for hydroelectric generators based on relay logic have been in common use for many years. In recent decades, microprocessor controllers have been developed and widely used in power plant environments. Computer systems have been used for data recording, alarm monitoring, and control of units and power plants. Advantages of computer-based automatic control The key points include the application of graphical user interface technology, integrating event sequence recording and trending, dynamic archiving and reporting functions into the control system, and Application of artificial intelligence and expert system functions. This document addresses the application, design concepts, and implementation of computer-based automation controls for hydropower plants. Guidelines for computer control of hydroelectric power plant automation 1 Scope This document specifies the functional/performance requirements, interface requirements, hardware configuration and operation of computer-based hydropower plant automation control. This document does not apply to generators and boosters. Transformer relay protection device system. This document is applicable to large and medium-sized hydropower plants, cascade hydropower plants and small hydropower plants for reference implementation. 2 Normative references This document has no normative references. 3 Terms, definitions and abbreviations 3.1 Terms and Definitions The following terms and definitions apply to this document. 3.1.1 analog-to-digital conversion; A/D Convert analog signals into digital signals, and the value of the digital output signal is proportional to the analog signal input. 3.1.2 automatic control Providing switching and/or control of equipment in a specific sequence and under predetermined conditions without operator intervention. 3.1.3 The control function adjusts the output active power of the controlled units according to the total output of the power plant, the interconnection line flow and the power system frequency. 3.1.4 The specific power system voltage is adjusted by adjusting the unit excitation within the machine terminal voltage limit and the automatic voltage regulator (AVR) capability. Press function. 3.1.5 availability The ratio of the system's available uptime to the sum of the system's available uptime and unavailable time. 3.1.6 Closed system backplane A circuit board with a connector or socket that provides a standardized method of transmitting signals between plug-in circuit boards. 3.1.7 bridge A device that enables communication between two networks using the same or similar technologies. ...