Http://www.opc-china.com Zhang Guangyuan Senior Engineer Hubei Qingyi Co., Ltd. Key words: Small Hydropower Monitoring IFIX Summary: Regional small hydropower group centralized control system is the direction of my country's small hydropower control development, this article details Clear company implements a centralized control system in regional small hydropower community, IFIX software has been successfully used in the system, and has achieved good results, it is worthwhile to promote applications. 1. Overview 1.1 At home and abroad, hydropower plants are generally located in remote mountains, inconveniences, and poor employee living environment. At present, my country's small hydropower plants have generally have a technical equipment backward. It is completely on-site monitoring and control on the operation of the unit. The automation is low, the power quality is unstable, and the working environment is extremely environmentally, the labor intensity is large, the accident is frequent, the production efficiency low. Small hydropower single-seat power stations have few unattended classes, and the centralized control of small hydropower groups is still in the exploration phase. With the rapid development of my country's electric power, the proportion of the capacity in the grid in the grid is getting smaller and smaller. Compared with the system capacity, it can be considered that the system capacity is infinite, the single seat small hydroelectric monit, and the system The effect is small, so it is only necessary to consider its own safety production. With the rapid development of information technology, the continuous improvement of computer performance and price declines, and multiple computers can form computer monitoring systems to perform real-time monitoring and operation of the power station, which is the technical foundation of the regional small hydroelectric group to achieve unattended classes. In developed countries, after years of research and development, the control and management of hydropower plants has achieved a lot of results, and most of the hydropower plants have implemented unattended work methods, and employees live in the city, only a few power stations have few people at the scene. Maintenance management, such as France, Japan, the United States, Canada, etc. The operation of the unit opening, stop, working conditions, operation monitoring, etc. are completed by the superior schedule through the monitoring system and automatic device. Cascade hydropower plants or regional hydropower plants have implemented computer centralized monitoring will gradually become the mainstream of automation of hydropower plants in my country. 1.2 Proceedings Background Clear Company is currently jurisdiction over ten small units, which are distributed in the Qingjiang River basin, with a maximum distance between 50 kilometers. With the rapid development of the company, more and more power stations are more and more, and the operational duty personnel account for more and more, in order to improve equipment management level, improve employee work environment, reduce labor intensity, reduce operational duty personnel, improve Production efficiency, centralized control and management of small hydropower groups in the region is the needs of the company's development and improvement of production management. 1.3 Monitoring Object Sunbug Power Station: ü Two 5.5MW Water Generator Sets and its auxiliary equipment; u oil system; Ü gas system; ü technical water supply system; Ü DC system; u-machine group into the water butterfly valve; Ü 400V System; ü leakage drainage system, etc. West Temple Power Station: ü six 0.5MW Water Generator Sets and its auxiliary equipment; u oil system; Ü gas system; ü technical water supply system; Ü DC system; u-unit, water gate valve; Ü 400V system; ü Leakage drainage system, etc.
高坝 洲 自备 电站: ü Two 3MW hydraulic generator sets and their auxiliary equipment; u oil system; Ü gas system; u technology water supply system; u DC system; Ü unit into water butterfly valve; Ü 400V system; Ü 400V system Waiting; 1.4 Monitoring System (1) Implementation of Automatic Monitoring and Recording Monitoring System to Each Power Station Equipment Automatic Completion, Treatment and Equipment Operations of Sungun Station, West Temple Ping Station, Gaoba Power Station Operation Equipment Data Record, including status information monitoring, analog information monitoring, fault / accident alarm, record and display. (2) Automatic control of each power plant equipment is required to operate or regulate the power station equipment, including the normal stop of the unit, automatic stop, unforgettable, unconfair adjustment, single equipment and public equipment operation. (3) Automation of the automatic generation of power station operation, automatic generation of running reports, automatic record of running operations, records and saves of runners' running logs, power plant equipment parameters or full value record and save, all reports can be automatically or summoned . (4) Control Network with Dispatching and Qingjiang Company Information System Communication and Dispatching Center, corporate information networks, realize the target requirements of distant control, information resource sharing, and give full play to the overall benefits of the entire system. (5) Clock Synchronization Management Computer Monitoring System The nodes are synchronized with international standard clock. 2, system structure and function 2. System Structure Cultivation Company Regional Small Hydropower System Including Sungun Power Station Computer Monitoring System, West Temple Ping Computer Monitoring System, Hebazhou Self-provided Power Computer Monitoring System. Main Network Adopt Exchange 100M Ether The network is used to connect three stations to data communication with the fiber. Using redundant distribution, multiple primary system structures. The system structure is shown in Figure 1. 2.2 Monitoring System Function This system function meets the requirements of "Hydraulic Power Plant Computer Monitoring System Design Regulations", "Computer Monitoring System for Computer Monitoring System" and "Technology Specifications for Hydropower Plants", and has the following main functions. (1) Data Acquisition and Processing (2) Safety Operation Monitoring and Event Alarm (3) Control Operation of Production Process (4) Automatic Power Generation Control (AGC) (5) Automatic Voltage Control (AVC) (6) Statistics Recording and Table Print (7) Human Interface and Graphic Display (8) Data Communication (9) Self-diagnosis and redundant switching 3, software configuration monitoring system software is divided into operating system software, SCADA software, application software, etc. These software manage the entire system resource, implement real-time data acquisition, human-machine interface management, communication scheduling, control operation, parameter statistical calculation, database management, system self-diagnosis, etc. 3.1 System Software Adopts the Windows NT operating system, which has the following characteristics: providing multi-user, multi-process, concurrency files, and operational records; perfect user security mechanisms; powerful, easy and efficient communication and networking capabilities; with strong periphery Equipment control management capabilities; support multiple advanced language software development platforms; can convert data from one format into another format; friendly, beautiful, Chinese man-machine interface, easy to use, flexible; document management is excellent in performance File structure and multi-protection mechanism; standard programs with error detection and correction; scalability, support multi-CPU operation.
3.2 Monitoring Software Adopts Intellution Company IFIX 2.5 as a monitoring configuration software, which has the following features: a powerful graphical tool that allows users to intuitively establish a process-oriented real-time window; data acquisition and data management; monitoring and control of real-time processes; Alarm and alarm management; real-time and historical trends; statistical process control; user-based security system; convenient system extension function; strong development tools, users can easily develop and configure system; online configuration; network capabilities; A flexible user-defined report. 3.3 Application Software (1) Data Acquisition and Processing Software Switching, Simulation, Electrical Measurement of Collection and Processing Switching Switching Alarm Process Parameters Default Alarm Processing I / O Channel Fault Alarm Process Computer System Integrated Information Alarm Processing Event Sequential Recording and Processing Statistics (2) Real-Time Database Management Software Basic Database Management Speech Database Management Screen and Print Table Data Management Calculation Data Management History Management Communication Transceiver Data Management (3) Human Machine Contact Software Real Time Clock Shows Multi-Window Real Time Screen display and refresh Multi-mode screen call command analysis software command execution and processing software parameter correction and setting real-time information alarm and event order record window display accident recall settings and its accident recall history data Display Dynamic Point Parameter Table Window Display Control Operation Window Show Report Record display and printing (4) Control operation software control mode setting operation Safe Locking operation process monitoring power station or unit active, reactive load setting (5) Report management running report data Automatic record report management timing or summoning report Print (6) Historical Data Management Software Accident Reminder Statistical Calculation (7) Communication Software Data Receiving and Processing Data Send Communication Data Checking and Fault Test Communication Channel Fault Alarm Process (8) AGC Software Active Load Allocation Automated Units Action Monitor Control Stable Limit Monitor ( 9) AVC software reactive power allocation (10) self-diagnosis software system self-diagnosis, alarms, and self-recovery functions, including system self-test and inter-device inter-device. Redundant component automatic switching processing (11) System clock management software GPS clock signal receiving system real-time clock management system clock synchronization timing task management (12) Network management software network communication management network diagnostic processing 4, system features 4.1 open structure, unified software All platforms are all IFIX software of Intellution as monitoring software, and unify the host computer software platform for centralized control. Since IFIX is a true distributed open structure, it is easy to issue problems between data communication interface between different systems, which is convenient for system integration. Due to mature industrial software, users can freely modify, expand, develop, and further improve the system in this platform. 4.2 iWeb Server Application IWEBSERVER is a component of the Intellial Dynamics Automation software that allows more people to remotely monitor the factory in the enterprise through standard Internet browser. iWebServer is a thin client application that does not need to install any special software, drivers, or client applications. Now the employees of the Qingqiang Company are in the office, and they can learn the real-time production situation of eunuch in front of the electric stations in front of each other at home; holidays can be carried out at home. 4.3 Organic combination of production management and monitoring system will operate the function and monitoring system of production management and other production management of log, defect management, and publish through information networks, company manager or production person in charge can always understand the operation of the front equipment, Defect processing, etc. Although each station is unattended, people are closer to field equipment through the Internet. 5. Systematic economic and technical analysis and social benefits 5.1 Improve power station safety operation level safe operation is one of the most important indicators of hydropower plants. In order to ensure the safety operation of each hydropower plant, the operating conditions and equipment of the hydropower plant must be regularly monitoring, and the rapid reflection is made.
