Application of enterprise energy management and control platform in energy management in steel industry

Ren Yunye (Jiangsu Ankerui Microgrid Research Institute Co.
, Ltd.
, Jiangyin, Jiangsu 204400) Foreword: According to the current situation of energy management in the steel industry, the problems existing in the energy management of steel enterprises are analyzed, and the energy management and control of modern steel industry is promoted
from the construction of energy control platform and the energy saving analysis of high-energy consumption equipment in the industry.

Keywords: energy saving and consumption reduction; Energy metering; Energy saving diagnosis; Carbon emissions; Energy consumption intensity; Steel; 1.
Background analysis In the context of the "double control" of energy consumption intensity and total consumption, enterprises need to consider how to deal with the dual control of energy consumption to ensure normal production
.

Most of the existing enterprises still adopt the mode
of "separate planning, independent design and independent operation" of various energy supply systems such as electricity, water, gas, cold and heat.

Widespread metering detects under-provisioning; The measurement accuracy of the metering equipment is not high, and the measurement data is not accurate; Low reliability of manual meter reading; It is difficult to effectively monitor and evaluate the energy efficiency of major energy-consuming equipment; Lack of decision data support and inability to provide reliable reference data for energy conservation assessments; There is a lack of an effective enterprise energy efficiency assessment index system, and it is difficult to implement energy consumption management measures
.

The enterprise energy management and control platform introduced in this article adopts automation and information technology to realize the automation, high efficiency and scientific management of the whole process from energy data collection, process monitoring, energy medium consumption analysis, energy consumption management, etc.
, so that the whole process of energy management, energy production and use is organically combined, and advanced data processing and analysis technology is used to carry out offline production analysis and management, realize the unified scheduling of the energy system of the whole plant, optimize the balance of energy media, Maximize the efficient use of energy, improve energy quality, reduce energy consumption, achieve energy conservation and reduce consumption and improve the overall energy management level
.

2.
The current situation of energy management in the steel industryAt present, the management of steel industry enterprises in terms of safety, quality, technology, environmental protection and other aspects has been gradually strengthened and standardized, but it is still relatively extensive in energy management, such as most steel companies still use manual "month reading, month analysis" management mode, which is bound to cause many inconveniences
to enterprise cost accounting.

With the continuous development and growth of enterprises, its energy costs are getting higher and higher, especially in the case of production limitation and curtailment in 2021, the economic benefits have declined significantly, the main reason is that the energy distribution is unreasonable, there is a serious waste of energy, resulting in rising production costs, and the level of energy management of enterprises needs to be improved
.

2.
1 Backward metering equipment At present, most steel companies are equipped with energy metering devices that are relatively backward, such as water and electricity meters, most of which are mechanical, and do not have signal collection functions
.

2.
2 The measurement method is backward Because the measurement device is equipped with backward, only manual meter reading can be implemented, resulting in low measurement efficiency
.

2.
3 Measurement information lag because after manual meter reading, a large number of manual records need to be filled in, summarized and data analyzed, and it takes time to read meters, and there are still safety hazards and poor
timeliness in some places.

2.
4 The timeliness of metering and scheduling is not strong because the metering information obtained by the management is lagging behind, resulting in scheduling decisions being not time-sensitive, and energy distribution scheduling is more difficult
.

2.
5 There are more high-energy equipment because most enterprises build earlier, equipment selection is relatively backward, and because of insufficient preliminary planning, most enterprises will choose high-power equipment to meet production, energy consumption is larger, so there is still a large space for
energy-saving transformation.

2.
6 The energy plan roughly enlarges the multi-enterprise energy plan only has annual and monthly energy production and consumption plans, and does not form a closed-loop management, only the statistical analysis and evaluation of the energy consumption index plan is carried out, and the energy consumption forecast is all judged
by manual experience.

2.
7 The low level of energy control automation is mainly manifested in: (1) The amount of information in the three-level metering of various energy statements is large, and manual processing is labor-consuming and time-consuming; (2) Lack of a complete and objective energy consumption data system; (3) Lack of energy performance evaluation and appraisal system based on objective data, and lack of systematic performance analysis; (4) The energy data collection and balancing process is incomplete and the implementation is biased; (5) Segmented energy monitoring and scheduling is conducive to centralized control and control, resulting in deviations in execution; (6) The energy dispatching method with the telephone as the main means is single and backward; (7) Empirical scheduling balance mode, resulting in low energy use efficiency and lack of early warning system, dispatchers can not quickly grasp the abnormal situation in the process of energy production, transmission, distribution, and consumption, and do not respond to emergencies in a timely manner; 3.
The construction figure of the enterprise energy management and control platform is based on GB 17167-2006 "Energy Metering Instrument Allocation and Management Requirements", collect various types of energy data through the edge computing gateway on the spot, transmit the data to the platform front-end collection server, and the platform is built on the customer's own server or cloud server
.

The platform can also collect the original PLC, DCS and other data of the enterprise, and can also dock with the internal ERP, MES and other information systems of the enterprise, and combine the production data for data analysis
such as product unit consumption and output value energy consumption.

After the construction is completed, enterprise users can log in to the web page and mobile APP through a privileged account to view the energy data
of the entire plant area.

Figure 2 (1) The design direction of the functional architecture system of the energy control platform covers the four directions of enterprise energy management: energy supply, real-time monitoring of energy from substations to branch circuits, and providing operation and maintenance and inspection functions
.

Energy management, power quality monitoring and analysis of each circuit, real-time monitoring and early warning of electricity safety; At the same time, real-time monitoring and data analysis
of the three-level energy system are carried out.

Equipment management, real-time monitoring of major production equipment, processes, lighting, air conditioning, elevators, etc.
, and analysis of equipment energy efficiency
.

Energy consumption analysis, all monitoring and analysis data are summarized, energy saving analysis, energy consumption prediction, energy efficiency analysis, etc.
, to provide data basis
for energy conservation diagnosis services.

3.
1 Three-level metering of various energy reports Enterprise energy control platform will install multi-functional instruments on the enterprise inlet end, key processes, processes, key energy equipment, to help enterprises form a multi-level energy measurement system, with a variety of reports, can display the energy consumption of enterprises in real time, help enterprises strengthen energy management, improve energy management efficiency
.

3.
2 Auxiliary equipment energy efficiency analysis enterprise energy control platform collects compressed air end pressure, collects air compressor outlet volume, circulating water end pressure and other information, judges whether the power of auxiliary production equipment of steel enterprises is reasonable, and analyzes the energy saving analysis report
of enterprises.

3.
3 Production equipment energy efficiency assessment calculation of the production of products required electricity unit consumption, water unit consumption, combined with the production data of production equipment, analysis of which production parameters, production equipment energy efficiency is higher, to provide a basis
for energy saving.

3.
4 The third-party docking interface enterprise energy management and control platform is open, scalable, and provides a standard third-party application interface
.

With the development of enterprises, the functions of each subsystem of the energy management system will continue to increase, and the functional modules will continue to increase, so the system has a good openness, leaving an interface
for the expansion of the system in the future.

3.
5 The energy management and control platform of energy-saving diagnosis enterprises normalizes various factors affecting energy consumption, calculates the difference in energy consumption before and after the implementation of energy-saving, evaluates the actual energy-saving effect of energy-saving measures, and provides a basis
for enterprise energy-saving diagnosis.

Figure 83.
6 Second-level data diagnosticsFor installed energy-saving devices, the system provides second-level data to support
the diagnosis of energy-saving equipment.

3.
7 The industrial configuration system integrates the industrial configuration editing platform, and the enterprise can draw its own process flow chart according to its own industry characteristics and main process equipment, so as to achieve the purpose of real-time monitoring and early warning of equipment energy efficiency data, such as air compressor system, process cooling water circulation system, refrigeration system, etc
.

3.
8 3D large screen shows the application of 3D visualization technology, helps enterprises build customizable cockpits, and visually displays the energy data
of enterprises.

3.
9 Alarm management is aimed at power rationing and energy consumption double control, to achieve energy consumption exceeding the standard alarm, power limit alarm, carbon emission exceeding standard alarm, etc.
, to help enterprises early warning, to avoid the occurrence of energy use abnormalities leading to high
energy costs.

Support hierarchical classification alarm, can be distributed and closed-loop processing of
alarm.

2, product selection scheme 4 Conclusion The enterprise energy control platform adopts automation, information technology and centralized management mode, implements centralized and flat dynamic monitoring and data management of the production, transmission and distribution and consumption of the enterprise, monitors the consumption of various types of energy such as electricity, water, gas, steam and compressed air of the enterprise, and helps the enterprise to strengthen energy management and improve equipmentOperational efficiency and energy use efficiency, to ensure the economic operation of equipment, tap the potential of energy saving, low cost, short recovery period, obvious economic benefits, not only can improve the core competitiveness of enterprises, but also the protection of the environment and the sustainable development of society the foundation and source, actively respond to the national policy on energy conservation and consumption reduction, for the steel industry energy management to provide a solid foundation
.

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About the author Ren Yunye, male, Jiangsu Ankerui Microgrid Research Institute Co.
, Ltd.
, engaged in the research and development of electrical-related Internet of
Things systems.