Application of Real-time Database System in Plant Production Management Monitoring Information System of Power Plant

In recent years, the electricity market has been in tight supply, and power shortages and power cuts have occurred from time to time throughout the country. The reason for this is mainly that the supply of electric coal resources is in short supply, and coal prices are also rising, which directly leads to an increase in the cost of electricity generation. In this way, reducing power generation costs has become a major issue for power plants. In order to reduce costs, power plants need to adopt more advanced production management methods in order to increase production efficiency by optimizing production and reducing coal consumption. Under such circumstances, the supervisory information system (SIS) of the power plant at the plant level has been promoted at a relatively fast rate and has become an effective way to improve the management level of the power plant.

SIS-power plant plant level production management monitoring information system is a set of power plant production processes involved in the production of power plants to better achieve the safety and economic operation of power generation companies, enhance the overall benefits of the company and the competitive advantages in future bidding for access to the Internet. Based on various control, monitoring and measurement systems, it integrates real-time data acquisition, processing, display and storage into a complete solution. The SIS system is an information system based on an open and real-time process information database oriented to the production process. This system stores and analyzes tens of thousands of data in the production process, providing control and decision-making for operating personnel and production managers. The basis and guidance. SIS provides real and important real-time real-time data for power companies to safely and stably generate electricity, control corporate costs, and increase productivity. At the same time, it can efficiently and accurately preserve large amounts of precious historical data produced by enterprises. Together with the scientific and effective data mining tools based on ESP-iSYS, accurate and professional calculation and analysis models have become a powerful guarantee for enterprise safety and economic operation. The plant-level monitoring information system (SIS) of the thermal power plant was put forward at the end of 1997 and was incorporated into the “Technical Specification for the Design of Thermal Power Plants” in 2000. On this basis, the "Technical Conditions for Plant-level Monitoring Information System of Thermal Power Plant" was formed in 2004.
ESP-iSYS is a set of real-time database system software package developed by Central Control Software Corporation. It is the real-time information hub of an enterprise, can fully integrate enterprise production information, and can support real-time information exchange and various intelligent and automated affairs of the entire enterprise. carried out. It can provide real-time and reliable real-time information and data analysis results for enterprise management departments. ESP-iSYS integrates real-time data across the enterprise to ensure that all roles in the enterprise receive the key metrics they need in a timely manner. The enterprise's real-time data is no longer used only for monitoring. Instead, real-time calculations and real-time data analysis functions of ESP-iSYS are used to convert real-time data into real-time information and real-time statistical analysis data that are crucial to enterprise production management and decision-making. Information and data make production transparent and help corporate decision makers make timely, accurate decisions. ESP-iSYS collects the company's original production data from various data sources, displays real-time information in front of you through rich Web screens and timely Web reports, allowing users to browse history and current operating conditions and various key analysis information. To meet the needs of production facilities, operation optimization, and enterprise management at all levels. ESP-iSYS has also been specially designed for the SIS system, providing more powerful support for the SIS function.


(1) Construction of real-time and historical data platform functional modules ESP-iSYS has an efficient core component ESP-iRTDB, which is the data hub and dispatch service center of the ESP-iSYS real-time database. As a high-speed bus for real-time data transmission, it completes the distribution, compression storage, and processing of real-time data. ESP-iSYS not only provides real-time data, but also supports fast transaction processing, can trigger virtual machines to run real-time computing tasks, and triggers alarm services to perform immediate alarm detection. ESP-iSYS also provides a cache-memory history database that accelerates access to real-time information, providing high-speed interaction for upper-tier applications to access recent real-time data information. The ESP-iSYS core connects to the ESP-iHisServer to efficiently store disk history data. The interface software that adapts to different communication standards and protocols in the field quickly delivers the collected data to the ESP-iSYS core. This method further improves the stability of the overall architecture. Through the ESP-iSYS core, various real-time data sources distributed in the enterprise are integrated to form a unified universal real-time data source. Various application systems in the enterprise can access the entire system based on a unified real-time data platform and a unified interface. Business real-time information.
(2) Construction of real-time data acquisition and processing function module for the whole plant ESP-iSYS is a development platform for real-time data collection and processing of the whole plant. Through simple configuration, real-time data of the entire plant can be integrated. ESP-iSYS provides a universal interface solution to various industrial protocols and standards, providing high-speed bidirectional interaction from the underlying data source to the ESP-iSYS core. ESP-iSYS supports more than 300 interface solutions, covering most of the distributed control systems, from small digital instruments, PLCs to large DCS and SCADA systems, all of which can be unified throughout the enterprise through ESP-iSYS interface solutions. data source. ESP-iSYS also provides professional tools for manual data entry such as laboratory management systems to ensure a rigorous and reliable input process. ESP-iSYS's interface solutions even cover some of the older legacy systems. Through ESP-iSYS's interface solution partners, ESP-iSYS can further expand the interface solutions provided for enterprises. By deploying a set of ESP-iSYS real-time databases, it can form a real-time data hub for stable operation of the entire enterprise. ESP-iSYS also provides an open interface development package that allows users with program development capabilities to easily expand.

(3) The construction of real-time monitoring function modules for the whole plant production process The production data of the production process control systems were collected through ESP-iSYS. These control systems included the DCS system, the coal conveying auxiliary system, the auxiliary public control system, the ash removal auxiliary system, The real-time production data of electric network monitoring system (SCAD), power grid remote transmission unit (RTU), electric energy metering system, boiler leak detection control system, continuous smoke monitoring system, etc., performs unified monitoring and inquiry of various production processes. Comprehensive processing of production data to form a plant-wide production report. To meet the requirements of the relevant management departments to quickly and efficiently query and process on-site process data.


The trend analysis function is one of the core applications of real-time databases. In the industrial production, long-term analysis and group comparison of trends is an effective means for backtracking, finding problems, and tapping the potential of production.
In addition to the trend analysis function based on B/S mode, ESP-iSYS also has a trend analysis software based on C/S mode-ESP-iTrend. It is a massive amount of real-time data professional trend analysis software and has many powerful functions for trend analysis. Tag grouping, group span adjustment, single trend line span adjustment, trend color, background, line type, connection method, etc. can be organized according to user's own needs through simple operations. ESP-iTrend supports trend viewing for millions of records per screen. It can be used for both horizontal and vertical magnifications, supports smooth scrolling, and facilitates the analysis of production process trends and the analysis of the causes of accidents by process personnel and technical engineers. ESP-iTrend integrates real-time trend, disk history trend, and memory historical trend. You can switch between the three. In real-time trend status, the trend graph can be refreshed automatically.

(4) The construction of process information statistical analysis function module ESP-iSYS supports embedding data mining module including cluster analysis and other algorithms to automatically generate real-time data, historical data, important performance indicators, analysis results, and multi-dimensional data mining. . Record, report and report on the status of the main equipment and control system of the unit.

(5) Construction of Unit Performance Calculation Function ESP-iSYS is embedded with a virtual machine engine for real-time calculation. It can easily add a virtual calculation bit number and support multiple trigger mechanisms for bit number reading, writing and timing. This provides powerful real-time computing and real-time information processing capabilities. ESP-iSYS provides a library of functions that support real-time computing services. With one or several lines of VB syntax scripts, rich computing functions can be realized.
Plant-level performance calculations will calculate the various efficiency and performance values ​​of the unit and its components, and record and display these values ​​and various intermediate calculations. The unit performance calculation functions can be divided into single unit performance calculations and plant-wide unit performance calculations.
The specific calculation formula should be corrected according to the situation on the site. General workshop technicians and engineers who understand the site will be more clear about their calculation methods. For on-site conditions where the measuring points are not sufficient, appropriate modifications must be made to satisfy the calculation conditions.
Single-unit performance calculations include:
Boiler thermal efficiency and heat loss;
Boiler fuel usage;
Air preheater efficiency;
Turbine thermal efficiency and steam rate;
Unit cycle thermal efficiency;
Heater performance
Coal consumption rate of power supply;
Coal consumption rate, etc.

Plant-wide performance calculations include:
Average boiler thermal efficiency and heat loss;
Whole plant boiler fuel consumption;
Average air preheater efficiency;
Average turbine thermal efficiency and steam rate;
Average unit cycle thermal efficiency;
Whole plant heater performance;
Plant-wide coal consumption rate;
Plant-wide coal consumption rate, etc.

(6) Construction of the energy loss analysis function module The following calculation and analysis functions can be customized by using the real-time calculation function and secondary development function of ESP-iSYS:
Controllable losses: main steam temperature pressure, reheat steam temperature, exhaust temperature, furnace oxygen content, etc.
Uncontrollable losses: ambient temperature, preheater air leakage, changes in coal, reheat losses, etc.
The specific calculation formulas of these calculation items also need to be adjusted and corrected according to the site conditions.
(7) Construction of operation optimization and operation guidance function Zhejiang Zhongkong Software Technology Co., Ltd. began research, development and implementation of advanced control technology from 1993, and in 1996 introduced APC-Hiecon multivariable predictive control software, successfully applied to petrochemical, Refining, chemical and other industries. It is the best operating optimization and operation guidance software in China.
(8) Construction of Operational Performance Evaluation Function Module The real-time calculation function and secondary development function of ESP-iSYS can be used to configure and customize the operation quality calculation and analysis function, and dynamically track the operation of the operator, which is unreasonable and unreasonable. Exceeds the standard operation to record, and forms the report, as the basis of the operation performance appraisal. The actual application works well.
(9) Construction of equipment condition monitoring and management function modules Some functions of the ESP-SupPlant EM-equipment condition monitoring and management software function module of ESP-iSYS are used, and combined with the secondary development function of ESP-iSYS and a common development interface to customize Development, using high-speed vibration frequency acquisition and other professional sensors and supporting hardware products, can realize the equipment status online monitoring system to achieve equipment status history, real-time data trends, vibration analysis, monitoring point fault forecasting, monitoring point failure analysis, duration data comparison and other functions . The on-line monitoring system consists of an overview of equipment operation status, historical trend display of monitoring points, analysis of vibration data (probability density, power spectrum, envelope spectrum, cepstrum, autocorrelation, cross-correlation, refinement spectrum, axis trajectory, time frequency Domain analysis, etc.), monitoring of faults at monitoring points, failure analysis of monitoring points, comparison of historical status data, results reporting, and other functional groups or subsystems. Its equipment management subsystem is based on equipment management and spare parts management, and establishes a standardized equipment basic information structure, including basic equipment configuration management, equipment file management, equipment operation maintenance management, equipment account management, equipment report management, equipment Spare parts management and so on.
(10) The construction of equipment life analysis and management function module The real-time calculation function and secondary development function of ESP-iSYS can be used to configure and customize the function module of equipment life analysis and management. The key parameters of the important components of boiler and turbine are online. Calculations to determine equipment life loss and aging conditions can enable users to adjust maintenance schedules in time to achieve dynamic equipment management.
(11) Construction of real-time information website function module The ESP-iSYS ESP-iWeb function module can enable users to configure, customize and modify the website interface to meet the dynamic management requirements of the enterprise.

(12) Web services access interface module construction ESP-iSYS real-time database embedded Web services interface module, this module provides the Login, GetTaghandle, ReadDiskHisData, ReadMemHisData, ReadTag, ReadTagMemHisData, GetVirtualTagAttribute, SamplingDiskHisDataBatch, LogOut, SamplingDiskHisData, GetAllVirtualTag, GetRealTagAttribute , GetMemHisLen, GetMemFixHis, GetAllRealTag, WriteTag and other common interfaces. These interfaces are simple, practical, powerful, and efficient to execute. The Web Service interface of ESP-iSYS real-time data also supports SSL encryption to ensure the security of real-time data transmission in an open network environment.



ESP-iSYS provides a lot of common secondary development customization functions, these functions do not need to modify the code, only need to carry out the corresponding configuration settings. The following points are summarized in several aspects.
(1) Authorization Control ESP-iSYS has a very complete authority configuration system. You can set permissions for user groups to facilitate batch allocation. You can also configure the permissions of a user individually, and the user's permissions can be accurate to the point.


(2) Point Configuration ESP-iSYS point configuration is divided into online and offline modes. Online configuration mode is more convenient for user's configuration modification.

(3) Web Server parameter configuration Web Server configuration can be set in IE through ESP-iWebSetup.

Web interface text configuration

Web menus and ESP-iWeb home page location changes can show, hide, or disable menus. You can also configure the location of each module link on the Web page by modifying the module menu index number.

(4) Report configuration ESP-iSYS provides a report configuration plug-in based on EXCELL, which can conveniently configure real-time data reports. Report generation is accomplished by saving the report template and uploading the template.



ESP-iSYS provides comprehensive support for the implementation of the SIS system based on the architecture of the product. ESP-iSYS makes it easy to build an SIS system. The system function of SIS, the scope of application software adaptation, and the monitoring method of field devices will all change with the development of power technology and IT technology. The flexible architecture of ESP-iSYS can enable the project company to facilitate the needs of enterprises. Changes and maintenance to improve the SIS system's adaptability and maintainability. In the process of marketization of China's power companies, the separation of the plant and network and the bidding for access to the Internet have become an inevitable trend of marketization. In the face of changing business environment, power companies should establish a factory-level monitoring information system based on ESP-iSYS, which will help improve the scientific management level of power plants and help improve the competitiveness of enterprises. Businesses have more development stamina.

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