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Home >>Introduction of Supervisory Information System (SIS)

Introduction of Supervisory Information System (SIS)

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1.      Overview

Supervisory Information System is a set of real-time monitoring of the production process to optimize the operation and production process management as one of the plant-level automated information system,it is real-time data acquisition and storage power plant DCS,auxiliary control the underlying control system,plant-wide information sharing data plant form, and plant-wide real-time monitoring of the production process,calculation of economic indicators and annlysis and other advanced application based on the database platfor. For power plant energy saving analysis and security assessment services.

Typical deployment scenarios as shown below

1.      System Effect

(1)   for the operating personnel to monitor the operation, alarm information, operating instructions.

(2) provide production for production management, site monitoring and analysis of dynamic indicators, quote the reference data, economic and production decisions.

(3)provide for the maintenance personnel, equipment, health conditions, failure analysis and remote fault diagnosis.

(4)for plant-level leaders, and corporations to provide a summary of indicators and decision support data. 

2.      System Characteristic

(1) high performance, reliable operation of the industrial real-time database;
(2) the unique value of the production process thinking;
(3) All interface software follow the OPC international standards;
(4) support a fully redundant architecture;
(5) software program built-in parallel processing

(6) the development of full componentization makes scalability, compatibility is very high;
Friendly and intelligent man-machine interface in order to facilitate the operator (7);
(8) data is stored with the original time and accuracy of real-time data of the whole plant;
(9) real-time (1 second scan refresh);
(10)support the B/S,C/S,APR function three access methods to meet different user,the use of different levels of demand; 

(11) rich application functional modules;
(12) so that customer satisfaction for the purpose of long-term, thoughtful service system

3.  System  Functions

2.1   The entire factory production process real-time monitoring

The whole plant production process control system includes a monitor and query the furnace electromechanical DCS, auxiliary control, such as real-time production data and production processes can be carried out on workstations and terminals in the SIS. Production data to a comprehensive treatment to the whole plant production reports and production costs. Producion managers real-time production, production and management of the dual function.

3.2 Calculation and analysis of economic indicators, performance indicators

Calculation of unit-level performance indicators, including the boiler efficiency and turbine heat rate, high-pressure cylinder efficiency, pressure cylinder efficiency, the main steam pressure, main steam temperature, reheat steam pressure, reheat steam temperature, the pressure loss of the reheater, boiler row smoke temperature, flue gas oxygen content of fly ash carbon content, condenser vacuum each heater end, superheater by warm water flow, the reheater warm water flow, fuel heat unit replensihment rate;
     Of plant-level economic indicators, including the whole plant power consumption rate, the whole plant coal consumption rate, the power supply of the whole plant, whole plant generating capacity, power consumption rate of the whole plant, the whole plant the amount of coal, the fuel quantity of the whole plant, whole plant water recharge, the whole plant - water quality indicators.

3.3 Run optimization and equipment instructions

Economic assessment of the whole plant operating conditions, analyze the causes, operating instructions, and the unit to run in optimal conditions, the highest operating efficiency, coal consumption and the lowest, with the best economic.

3.4 Unit energy saving and consumption reduction analysis

Economic indicators starting from the analysis unit to analyze the unit of energy saving ways.Loss analysis, including controllable and uncontrollable loss analysis. Controllable consumption difference, including the main steam pressure, main steam temperature and reheat steam temperature, uncontrollable include reheater pressure loss, the fuel heat.

3.5 Operation scheduling

SIS on the load distribution station in the whole plant the distant  AGC instructions and other production scheduling instruction combined with the main factory, auxiliary systems and equipment operation to determine the economic load dispatch of units.

3.6 Process equipment condition monitoring and fault diagnosis

Process systems and equipment ontology parameter changes, an important component of the work in harsh environments and equipment stress and life calculation, analysis and forecasting. Real-time analysis of the point of failure and the cause of the malfunction of the host device, and provides trouble shooting approach.

3.7 Unit-line performance test

Online performance test, including the performance test boiler, turbine performance test, the condenser performance test, the test of the air preheater leakage rate and vacuum tightness test. Performance test shall be in accordance with GB/T 8117, GB/T 10184 and DL/T 467 requirements. After the test, performance test report is generated automatically and stored for the operation and management personnel to view reports at any time.

3.8 Production reports, and run assessment

Report statistics of production data: the type of report, by value, day, month, year on duyt, the value of month, the value of time interval, and statistics on economic indicators and the main operating parameters, and generate reports;

Indicators of competition: either assessment with indicators (coal consumption and heat dissipation), can also be broken down into small indicators (main steam pressure, main steam temperature, feed water temperature, etc.) weighted by assessment;

Power plant assessment and accurate collection and statistical analysis unit active and reactive power, voltage, start and stop time, the AGC to vote to stop time, the province transferred is expected to plan load value.

4.  Main technical data

(1) real-time (1 second refresh)
(2) storage capacity (ranging from 5,000 to 250 000 points)
(3) storage for a long time (at least 4 years)
(4) real-time screen refresh time <2 seconds
(5) The system availability of 99.8%
(6) of the average uptime> = 12,000 hours

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