0 leading words
National "Twelfth Five Year Plan" proposed to build a resource-saving and environment-friendly society as an important measure to accelerate the transformation of the mode of economic development.
As one of the major energy consumption of chemical enterprises, in the "Twelfth Five Year" period, how to maintain economic efficiency and suitable development speed under the premise of reducing energy and resource consumption, full and effective use of the two energy, improve energy efficiency and energy efficiency and enterprise management level, to complete the national energy conservation and emission reduction targets, is an important issue.
With the further advance of the two integration work, the state has increased the support for enterprise energy conservation projects, encourage enterprises to adopt information technology and automation management and control of a high collection of science and technology, and actively build a reasonable design, complete functions and closely integrated with the production management system of modern chemical enterprise energy management system (EMS), to promote the sustainable development of the "economy, efficiency and environmental protection" of the new road to industrialization. Hebei Ji Heng Group Co., Ltd. is one of the first batch of pilot units of the national chemical industry circular economy industrial park, through the implementation of enterprise energy management system construction projects, not only to achieve enterprise management information, reduce production costs, reduce energy consumption, improve production efficiency, but also to cultivate a number of fine management team, for the enterprise comprehensive development of circular economy, to achieve sustainable development provides a powerful driving force. In this paper, according to the characteristics of energy consumption of chemical enterprises, the system introduced the design objectives, design scope, network system requirements of the circular economy park EMS. Some successful experiences of the automation company in the implementation of energy management center in Hangzhou are summarized.
1 EMS design objectives
The EMS system construction goal is: the existing energy management resource integration group companies, optimize and establish energy centralized management mode, each branch of DCS data acquisition system and network information management system to support the implementation of optimal scheduling of water, electricity, coal group, steam energy medium and comprehensive management, the establishment of energy management system safe, stable, economical and efficient; real-time monitoring and control of key energy consuming equipment; understand and master the production and use of various energy media, real-time process indicators and key equipment operating conditions and the company production, to achieve scientific decision-making and command, to ensure the safe operation of production and energy system; energy the measuring basis, improve the level of technology and equipment of energy system, improve the index of assessment and evaluation of energy consumption measurement, Inc. System, statistics, energy balance, standard management and fine management. Through the integration of the video surveillance system of each branch to the EMS management platform, to achieve the Circular Industrial Park safety and environmental protection, major hazard sources, important environmental factors monitoring and emergency response plans and other functions.
2 EMS design scope and content
The energy management system consists of 1 management centers, namely, the group company headquarters energy management center hall and 5 branch companies were set up energy management sub center. The main center and the sub center are connected through the industrial ring network to construct the local network of thousands of data transmission. According to the level of authorized network user rights, different users through the WEB access EMS system data. The whole process of the industrial park's energy process information, real-time production process information and safety and environmental protection video monitoring screen can be in the main center (Energy Management Center Hall) large screen system on the free switch, easy to real-time monitoring and management. Group total scheduling can be carried out by the energy management system platform for the production, energy, logistics, environmental protection, major hazard sources, such as the 5 branch of the subordinate companies to carry out centralized monitoring, centralized management and integrated balance scheduling. EMS mainly includes energy management subsystem, production scheduling subsystem and EMS integrated monitoring subsystem.
2.1 energy management subsystem
Establish and improve energy management organizations and energy management system, the development of the group and the branch's energy management policy and energy conservation goals, to provide guidelines for energy management activities and objectives. Will water, electricity, coal, steam energy resources as a group level, centralized monitoring and management and balanced scheduling, realize energy data of the group, each branch unified collection, unified management and use, one-stop management and according to the authorization level to spread the use of the process cost accounting of energy, the collected energy data of induction, analysis and reorganization, and establish the objective data as the basis for energy consumption evaluation system. Its main function modules include energy management organization and system construction, energy forecasting, energy planning and balancing and performance management, energy statistics, energy benchmarking management and energy saving, energy measurement system analysis.
2.1.1 energy management organization and system construction
The group headquarters was established as the chairman of the board of directors, the general manager, deputy head of production for the deputy head of the energy management team, the energy management work to co-ordinate planning and decision-making. In the group production office to set up energy management office, responsible for the specific implementation of the group's energy management work, and the management and scheduling of energy management and control hall.
Each branch was established to produce the deputy head of the energy management office, members of the workshop director of the implementation of the group's energy management decisions and policies, responsible for the company's energy management daily work. Combined with relevant national laws, regulations and industrial policies, establish and improve the energy management system of the group and the company, to develop the policies and objectives of the energy management, through the construction of top-down construction of mechanism and system energy, on the company's energy management performance in the evaluation and performance appraisal, so as to guarantee the smooth implementation of the group energy management and continuous improvement.
2.1.2 energy forecast
Through the summary of the historical data of the EMS database, analysis and finishing, combined with the future of a period (month, quarter, year) production plan, the establishment of energy consumption forecast and optimal scheduling model, the water, electricity, coal, steam and other major energy production and consumption forecast, get the energy optimization scheduling recommendations and programs to achieve the "ex ante static management", improve the efficiency of energy use.
2.1.3 plan and energy balance and performance management
According to the optimization plan of energy demand and supply plan of each branch company monthly production plan and energy prediction, to guide the company production plan according to supply and demand, the amount of energy required to provide each production process, and the real-time tracking energy plan implementation and on-site operation condition in line, dynamic adjustment of energy supply and demand; the establishment of the branch of the water, electricity and steam energy balance network diagram and set the balance record, with the monthly energy statistics data, based on the energy balance of the actual energy quantity, calculating the amount of use, loss of energy, medium for the amount of effective energy loss = + balance, performance data of energy production and operation for, reflect all kinds of energy production, distribution and use of data.
Statistical analysis of 2.1.4 energy data
Using statistical analysis technology, carries on the analysis to the balance of current and historical data of energy, timely access to the energy consumption quota and energy programme implementation, the energy cost of change, the specific consumption of the group and the company product energy consumption and total amount of monthly statements, water, electricity, coal, steam, etc. energy consumption, fold scalar and comprehensive energy consumption, product energy consumption year on year and sequential data and corresponding report of pie charts, bar charts, line charts and so on. Through a variety of charts (cases) can intuitively grasp the group's energy consumption compared to the situation, to find the level of energy consumption. On the basis of the products with the energy of scalar values can not only for energy benchmarking management in guiding group company, the reasonable utilization of truly energy, energy-saving emission reduction targets, and can according to corporation energy management system of energy excess and energy-saving, rewards and punishments, through appropriate assessment mechanism, and urge the company's energy-saving emission reduction work of continuous improvement.
2.1.5 energy benchmarking management and energy saving
Through the analysis of the comprehensive energy consumption determined by improving energy efficiency benchmarking activities of product energy consumption or process energy consumption values, and domestic and international industry advanced enterprises energy efficiency indicators carries on the contrast analysis, to find the gap, analysis the reasons to develop the underlying improvement scheme, implementation of the elimination of backward production capacity of the project and the implementation of energy-saving project schedule, stages for energy benchmarking activities effect evaluation, timely adjustment of the underlying scalar value, and to develop energy benchmarking activities plan the next stage of, higher levels of energy benchmarking activities, continuously improve enterprise energy consumption and energy efficiency.
2.1.6 energy metering system
To establish our energy measurement instruments, equipment and secondary equipment and energy measurement personnel ledger, the establishment of energy meter record database and database of temporary energy, equipment operation file to ensure equipment maintenance plan, high power consumption equipment and the system operation monitoring, statistics of the system drive rate and high power consuming equipment running time, and implement the assessment, urge the company to improve the driving rate, after parking system, check if there is a device independent air, reduce the power consumption. Through monitoring the running state of the equipment of the whole company, the energy-saving effect of the main equipment is realized.