SCADA system solution for large water conservancy pumping station


SCADA system solution for large water conservancy pumping station

1. System overview

Water conservancy is the pillar industry of China’s national economy, and pumping stations are an important part of water conservancy projects. They play an irreplaceable role in solving the current three major water resources problems of floods, droughts, water shortages, and deterioration of the water environment. The important tasks of natural flood control, flood control, irrigation, water transfer and water supply play a very important role in the sustainable development of our national economy and the construction of a well-off society in an all-round way. The pumping station is also the only artificial power source for water to provide potential energy for water to solve the problems of irrigation, water supply and water resource allocation under the condition of no gravity flow. It is to solve flood disasters, drought and water shortage, industrial and agricultural production water and urban and rural residents' domestic water. Important engineering measures are concrete manifestations of "ecological water conservancy", "environmental water conservancy", "resource water conservancy", "modern water conservancy" and "sustainable water conservancy".

Construction of the monitoring system of the pump station centralized control center:

  • The high-performance data acquisition and monitoring of the huge field data of the pumping station is realized through SCADA software, and the high-reliability control of each equipment is realized through SCADA software. At the same time, upload the information collected by the SCADA system to the upper-level management unit of the pumping station to provide convenience for the upper-level system to realize the centralized management and information dispatch of the pumping station;
  • Electronic production data to provide help for process improvement and performance statistics;
  • The real-time status of large and complex systems such as pumping units, electrical systems, public oil, water, gas systems, gate control systems, excitation systems and DC systems of the whole station are displayed on the SCADA screen in the form of highly integrated simulation animation, video images, and GIS information. , To form a monitoring method that seamlessly integrates data simulation, video imaging, and GIS systems.
  • Make full use of the data in the complete historical database and alarm event database, and conveniently analyze statistics, accident analysis and recall based on the stored historical data. Realize the information management of large pumping stations.

2. Key points of the plan

  • The real-time, high accuracy and reliability of the SCADA monitoring system for equipment control and the safety of equipment control
  • High-speed data collection, real-time data processing and display of large amounts of data on field equipment to ensure the real-time, accuracy and integrity of data
  • High integration of dynamic simulation graphics and video information, dynamic trends, reports and other display methods
  • High-speed historical storage of large-point data under the premise of ensuring the stability of the database
  • Historical data storage should have efficient storage compression performance
  • Data retrieval should have a fast response speed
  • Provide quick analysis tools so that operators can easily complete data storage, query, analysis, and statistical calculations
  • Should support multiple clients to access data concurrently without affecting system performance

Three, system architecture

The system can be divided into four levels. The first layer is the field control layer, which mainly includes on-site hardware PLCs, instruments and other equipment; the second layer is the SCADA monitoring layer, including the central control room SCADA engineer station and operator station; the third layer is data The storage layer mainly includes the industrial historical database server; the fourth layer is the data application layer, which mainly includes the scheduling analysis platform, web publishing server, and large-screen display system.

Four, system function

1. High-performance data acquisition and high-reliability equipment control provide guarantee for the safe and stable operation of the pumping station

In the SCADA system of large-scale water conservancy pumping stations, there are extremely high requirements for the accuracy of real-time data and alarm information collection and the reliability of remote operation, because whether it is real-time data interruption or operation commands cannot be accurately issued, there are It may affect the work of the entire system, and may cause serious accidents. The lighter may cause equipment damage, and the severer may cause personal safety accidents. In order to ensure the reliability of system acquisition and control, the SCADA operator station dual-computer hot standby and dual-network redundant configuration are adopted.

In the SCADA operator station configured with dual-computer redundancy, the data acquisition software KingIOServer and the monitoring software KingSCADA operate independently of each other. The industrial database and the upper management unit directly obtain data from the KingIOServer without interference with the monitoring system. At the same time, KingIOServer has a data cache function. When the communication with the industrial library or the upper network is abnormal, KingIOServer will cache the historical data, and then send the data after the communication is restored to ensure the integrity of the data.

2. The system provides vivid images and simulated animations, combined with video images and GIS systems, the equipment is easy to operate, and the alarm curve query is flexible and convenient.

a) The system has powerful graphic development tools to produce three-dimensional display effects and restore the on-site environment.

b) Support online and offline maps, and can embed video surveillance information.

c) The system monitors system abnormalities in real time, automatically records alarms and event data, and reminds them through sound and light alarms and email alarms. When configured for voice broadcast, the alarm content, alarm object, current real-time status, etc., are broadcast in standard Mandarin.

d) View the trend of data changes in real time, superimpose and compare the data.

3. Data analysis and application based on industrial database to realize pump station automation and informatization The system realizes the recording and storage of information such as water conservancy and water regime information, pumps of the whole station, electrical systems, public oil, water, and gas systems, gate control systems, excitation systems and DC system equipment operation.

Automatically generate various duty reports, operation logs, and day, month and year production reports through report templates or free-style reports.

Through the analysis and statistics of a large number of historical data in the industrial database, combined with past experience and analysis results, the optimized scheduling plan for the operation and management of the pumping station is summarized, and an accident warning mechanism is provided to prevent problems before they occur. Provide guarantee for more reliable and economic operation of pumping station.