SCADA system solution for urban heating network


SCADA system solution for urban heating network

1. Program overview

At present, the national heating and heating energy consumption accounts for 10% of the total energy consumption of the whole society, but the heat loss of the heating system is as high as 30%. With the deepening of China's urbanization strategy, the demand for energy saving and consumption reduction will also rise further.

The plan mainly provides a unified production management platform for boiler rooms, old and new heat exchange stations, thermal power plants, etc. of different monitoring systems, integrates production-related systems of heating companies, realizes data sharing, and establishes a data center. Realize the statistical analysis and display of the operating data of the heat source plants and heat exchange stations under its jurisdiction, use the balance control method of the whole network to control the balanced distribution of heat sources, grasp the energy consumption of the system in real time, and obtain an optimized control plan based on the energy consumption statistical analysis data , Provide a basis for the production, operation and energy management of heating enterprises, realize the goal of energy saving and consumption reduction, and finally realize the comprehensive information management of heating enterprises.

2. Project highlights

  • Realize massive data collection and control from heat sources, heat exchange stations, building control valves, and end users
  • Realize the display and analysis of operating data based on GIS map
  • The whole network is balanced to realize the optimal operation of the whole network
  • Support multiple third-party system integration
  • Remote centralized management and maintenance
  • Complete user rights configuration scheme
  • The hydraulic graph can train the algorithm to the optimal state
  • Load forecasting is the basis for energy saving and consumption reduction decision-making
  • Energy management system, save energy and reduce consumption, save costs

3. system architecture

The platform is divided into: field layer, data collection storage layer and analysis display layer. It provides multi-network, multi-device, and multi-concurrent collection methods. It also supports data block collection and supports the function of resuming data transmission, ensuring the unity and integrity of data. Heat source data, heat network data, heat station data, building control data and heat user data are collected in the data center for real-time collection and storage.

4. system function

1. Data collection

The data acquisition solution of Yakong Technology supports multiple networks and multi-device acquisition methods. It is supported by a rich device driver library. It also supports data block acquisition and has the function of resuming data transmission to ensure the unity and integrity of the data.

2. Process monitoring

Real-time monitoring of the process monitoring screen of each heat exchange station, showing the operating parameters of the heat exchange station, the equipment in the screen can be displayed in 3D, simulating reality, and achieving an immersive effect.

The process screen also includes the first station and primary side process screens. Through the first station and primary side process screens, the total heating information, real-time data and calculation parameter data of the system are obtained, and the heating situation of the system is intuitively displayed on the screen.

3. Production report

The report system can record and query the real-time and historical data generated during the production process and output it to the user in a certain format. Provides an embedded report system, engineers can arbitrarily set the report format, and realize various operations, data conversion, statistical analysis and printing in the report through the report function provided by the system. Support real-time reports, historical reports (daily, monthly, and annual).

4. Trend curve

The trend curve control has multiple drawing areas, multiple data axes, and multiple time axes, and can perform online conversion between real-time trend curves and historical trend curves, supports custom query intervals and filter conditions, and makes it easy to query and compare personalized trend curves And analysis.

5. Alarm and early warning

The alarm pre-warning function will send the alarm and pre-warning information at the first time, by playing the warning sound, popping up the prompt window on the client interface with flashing colors, or pushing through SMS or RTX to remind the operator of equipment failure during operation. Maintenance information, and production accident information that will occur. The alarm and early warning are equipped with priority management, and the alarm limit is dynamically configured to realize automatic fault alarm and automatic accident early warning, and display all alarm and early warning lists and detailed information. At the same time, it supports custom query conditions to query historical alarm information (unit, time interval, alarm type, whether to confirm, etc.).

1) Equipment failure/maintenance and maintenance alarm: When the equipment fails during operation, or when the equipment needs maintenance, the corresponding area will flash and be accompanied by an alarm voice prompt to remind the maintenance personnel to arrive at the site in time to repair the equipment. maintenance.

2) Early warning of production accidents: Once the supply and return water flow, temperature, etc. reach the set warning value, an early warning dialog box will pop up to remind the operator to adjust the production status in time to prevent accidents.

Dynamic configuration of alarm limits
6. Event record

It can record various events of the system, such as equipment failure, over-limit alarm, equipment start and stop, control command issuance, parameter adjustment, user login, etc. The recorded information includes related data, conditions, users when the event occurs, and the time of the event , The IP address and computer name of the operating terminal, for incident traceability and equipment operation analysis.

7. Equipment communication management

Yakong Technology provides professional equipment communication management tools. It displays the operating status and detailed information of the equipment in the system architecture in a tree-like manner, so as to realize the diagnosis of equipment communication and locate the fault point in the first time. Provide a strong basis for management decisions and improve efficiency.

8. Control valve monitoring of secondary network building

Break through the traditional heating network monitoring, transition from the heat exchange station level to the building level, and realize the collection and monitoring of the building control valves in the secondary network. It is the development trend of the industry and one of our advantages.

9. Weather management module

Meteorological data is the basic basis for heating dispatch. The system introduces meteorological information to command dispatch and as the basic basis for measuring heat consumption adjustment. The weather management module provides five functional modules: weather actual conditions, weather forecasts, hourly weather history, full weather history and weather data statistical analysis.

10. Geographical information

Yakong Technology provides tools and methods for drawing online geographic information pipe network, which can display the information of pipe network and heat exchange station once on the panoramic map, and freely select the data to be displayed, such as heat load, temperature, flow, pressure, etc., and the state of the whole network It's clear at a glance.

11. Whole network balance control

Yakong Technology provides three methods of network-wide balance control methods: relative flow control method, coefficient adjustment method, and temperature control method. According to the conditions of the heating network and heat exchange station, select the appropriate control method. When the heating capacity of the heat source is sufficient, the heat supply is controlled in time to ensure that the indoor temperature meets the index requirements according to the change of outdoor temperature; when the heating capacity of the heat source is insufficient, the heating parameters of the most unfavorable loop heating station are used as the basis to switch off to varying degrees The electric control valves of other heating stations can achieve uniform heating effect. It is also possible to supply heat by planning the heat index, and by controlling the index of all heat power stations, so that the heat supply of the heat source does not exceed the standard, thereby achieving the purpose of controlling the heating cost. At the same time of algorithm control, dispatchers can also participate in the control manually.

12. Heat load forecast

According to the method of predicting the heat index of outdoor temperature, the heat quantity in the next few days is predicted. The change of the heating system load presents periodic and regular changes, but also random. The main influencing factors are climate and system pipe network parameters.

Using historical data as a reference, and on the basis of grasping the law of load changes, according to the weather forecast, call operating parameters of similar weather and time periods, compare each part of the parameters, and get the best control plan.

13. Real-time water pressure graph

The theoretical supply and return water pressure of the heat exchange station is displayed in a curve with the actual supply and return pressure, and the simulation data is compared with the measured data. Guide the training and calibration of the simulation model, check the simulation results to achieve the best results, generate emergency plans and reconstruction plans, etc.; on the other hand, when the deviation is large, it indicates that there is a fault in the heating network, locate the pipe section where the fault is located through the algorithm, and analyze the fault diagnosis Provide evidence.

14. Equipment operation management system

Equipment operation management

Equipment operation management, including cumulative equipment operation time, equipment failure diagnosis, equipment health analysis, equipment alarm reminder, equipment OEE (comprehensive efficiency) analysis, equipment start and stop times monitoring, electricity consumption, fuel consumption information statistics and other functions, and analyze the results Storage and display.

Equipment operating condition statistics: classify equipment, and count the number of equipment in operation, cold standby, hot standby, and fault status, and basic data information of each equipment. Statistics on real-time working conditions and working conditions at a certain historical time are available.

Equipment operation analysis

Equipment operation analysis mainly realizes internal comparative analysis and comparison of similar equipment in multiple heat exchange stations, such as equipment utilization, efficiency, and energy consumption. The analysis results are mainly displayed in intuitive ways such as histograms, pie charts, curves and reports.

Statistical analysis of equipment failure

The equipment failure statistical analysis is based on the equipment failure record database data to realize the statistical analysis of the number of failures and failure rates of different levels of a single device, and the statistical analysis of the number of failures and failure rates in the heat exchange station of similar equipment.

15. User indoor temperature measurement system

Supports the collection and storage of user indoor temperature data, which can be displayed in a variety of ways such as lists and graphs. Simultaneous analysis and comparison are performed. The temperature data is displayed in the form of histogram on the same time axis. The temperature data can also be used by other analysis programs.

16. Energy Management System

Energy consumption plan indicator designation

According to the energy consumption index of the overall plan of the heating power company, the system decomposes the water, electricity, and heat energy consumption indexes step by step, and finally decomposes them to the heat exchange station. Building age, heating method, pipeline location, etc. are used as conditions to participate in the decomposition of energy consumption indicators.

Real-time tracking of energy consumption

Based on the generated water, electricity, and heat indicators of each station, the dispatch system executes the control program to obtain real-time water, electricity, and heat indicator results, and compare and analyze the planned indicators. An alarm will be given for sites exceeding the standard, and the screen displays the current site unit consumption, total consumption, completion percentage and other data. Real-time tracking of the implementation of indicators, energy saving and consumption reduction, and cost control.

History of energy consumption

Perform statistical calculations on the energy consumption (water consumption, electricity consumption, heat consumption) data of the heat exchange station, display the cost consumption in the heating operation process in the form of reports, charts, etc., and display the results according to the energy consumption ranking for management decision-making , Performance appraisal provides an important basis.

17. User management system

User basic information management, including user information entry, deletion, modification, query, and set login timeout.

Dynamically set user permissions and user roles for users. The system defines the accessible and operational content range for each role to ensure the security of system information. A user can correspond to one or more roles.

The user logs in to the system with a legal user name and password. After logging in, the last login time and location are displayed, and repeated logins in different places are prohibited. The administrator can eliminate static timeout users, and the operation control needs to be authenticated again.

18. Other application system interfaces

The solution platform is a third-party application software system such as geographic information system, hot meter reading system, charging system, customer service system, video monitoring system, heating patrol management system, etc., providing a wealth of system interfaces to obtain the information of these systems and embed it in In the platform, high-quality images are displayed without distortion to realize the integration of multiple application systems.

5. Program summary

Supported by a stable and highly reliable software platform, on the basis of the traditional SCADA monitoring system, it provides network-wide balance control, energy consumption management, equipment communication management, water pressure diagram, load forecasting, weather management, user temperature measurement system and other functions. At the same time, it provides rich interfaces to integrate with third-party software platforms to realize the integration of heating application platforms. Precise control algorithms and reliable energy consumption analysis can realize massive data collection and control from heat sources, heat exchange stations, building control valves, and end users, so that the entire network can achieve a balance of hydraulic and thermal power, and achieve energy saving and cost reduction. , To save resources for the society and create economic benefits for enterprises.