Xu Shuang
Ankerui Electric Co., Ltd. Â Â Â Jiading 201801
1 Overview
The energy management system is a modern energy management tool and platform based on advanced technologies such as networks and computers. It can collect, store, process, count, query and analyze energy consumption data of an enterprise, and provide energy consumption plans, energy consumption accounting and quota management of the enterprise. It monitors, analyzes and diagnoses the energy consumption of enterprises, and realizes the scientific and effective management of energy-saving performance and the continuous improvement of energy efficiency.
With the increasing tension in energy resources and the increasing demand for energy, the proportion of energy costs in the operating costs of enterprises has gradually increased. This has also made it difficult for business managers and production operators to reduce their operating costs and improve their overall competitiveness. From the perspective of force, efforts are made to strengthen the energy management of the company. However, how to formulate appropriate energy procurement and use plans in a timely manner in accordance with the production plans of enterprises, how to monitor and statistically analyze the energy consumption in each production process, and how to timely respond to changes in production operating parameters for water, electricity, gas, fuel, etc. Dispatch, how to achieve a reasonable analysis and overall monitoring of energy consumption trends and energy utilization levels in the production process, how to find energy-saving potential and formulate energy-saving measures based on energy consumption statistics and monitoring, is still the company in improving energy management Levels and outstanding problems faced in reducing energy costs. Therefore, enterprises urgently need to obtain an energy management and control integration solution, and the increasingly mature and widely used energy management system also provides an effective way for enterprise energy information management and continuous improvement of energy efficiency.
2 energy consumption status and energy management analysis
According to rough estimates, the current iron and steel metallurgy plant energy consumption accounts for about 20% to 40% of the cost of steel. Different equipment levels, process flows, product structure, and energy management levels all have different effects on energy consumption. Practical and economical energy-saving technologies, digitalized balanced transmission and distribution systems and basic energy management are the basic technological measures for modern steel enterprises to achieve energy conservation and consumption reduction. Construction company integrated centralized energy management system is the technical support measures digital energy management measures are also of major technical equipment of large iron and steel enterprises to improve energy efficiency, and the need for high level of awareness should be the construction of enterprise energy management systems and the development of strategic business imperative Sex.
Acrel-5000 building energy consumption analysis management system energy consumption data collection methods include manual collection methods and automatic collection methods. The data collected through manual collection includes the basic data collection indexes of the building and other energy consumption data that cannot be collected through automatic methods, such as the consumption of coal, liquefied petroleum, artificial gas and other energy consumption. The data collected through automatic collection includes building sub-item energy consumption data and classification energy consumption data. It is collected by the automatic metering device in real time and transmitted to the data center in real time through automatic transmission.
3 Enterprise Energy Management System Solutions
3.1 Project Overview
Uttam Steel in India constructs 500,000 tons of pig iron mill in Wardha, Maharashtra (Wardha region is rich in coal and iron ore resources, with convenient transportation, passing highways and railways) The supporting project includes a sintering plant and a 500,000 tons coking plant. The entire project is expected to invest 11 billion rupees ($228 million).
The construction of 500,000 tons of coking plant includes coal preparation plant, coking plant, gas purification plant and other production facilities and supporting public auxiliary facilities; as the energy supply area of ​​other plant areas, the distribution security is particularly important and the requirements are higher. The power control must be safe, reliable, and fast, and manual operation on the spot can no longer meet the actual requirements of the project. Shanghai Ankerui Electric Co., Ltd., entrusted by Shanghai Delixi Co., Ltd., went to the on-site construction and commissioning energy management system of the Indian Coking Plant, and mainly completed the 6.6KV power distribution system and 0.4KV power distribution system for centralized monitoring in the coking plant. And monitoring and management of water, gas, etc. between production systems, to achieve the purpose of centralized monitoring and management of energy consumption.
3.2 Network Structure
This system is mainly composed of three parts: data acquisition layer, data transmission network, and energy efficiency management system software.
1. Data collection layer: Through the intelligent power meter with digital interface installed in the energy consumption monitoring instrument box (cabinet), real-time monitoring of the load power consumption is implemented. Monitoring data includes: electrical parameters such as voltage, current, active power, reactive power, power factor, active and reactive power, harmonics, environment and switch status, and event records. The monitoring objects include: the medium-low voltage feeder circuit on the power demand side, the main energy-consuming electromechanical equipment, and other energy-consuming facilities in the plant (living area). At the same time, it can also use on-site intelligent data collection such as electronic flow meters, electronic heat meters, electronic belt weighers, and ground scales for water consumption, gas consumption, heat, feed quantity, and production volume, according to site conditions and system application requirements. The collected data can also be taken from the user's data interface of other intelligent systems. Â
2. Data transmission network: Data collected from energy metering devices are collected in real-time through energy-conservation smart data gateways installed in the energy consumption monitoring instrument box (cabinet), and transmitted to the energy monitoring center through the TCP/IP network. No need for long-distance wiring, construction is simple and reliable. Ruisense smart data gateway provides a variety of access methods, currently supports RS-485/RS-232 bus, optical fiber, industrial Ethernet, 433M wireless, GSM/GPRS/CDMA network transmission and other methods.
3, electricity and energy efficiency management system software: to complete the data acquisition, calibration, analysis, processing, output, system maintenance, authorization use permission hierarchical control, etc.; and the site can run the important data, alarm information, fault information, etc. Corporate decision makers.
3.3 Device Parameter List
name
Model, specification
unit
Quantity
Note
Field device layer
Electricity meters, etc.
DTSD1352
Three-phase I, U, kW, Kvar, kWh, Kvarh, Hz, cosΦ, four-quadrant electrical energy, RS485/Modbus, LED display
only
407
Ankerui
ACR320ELH
Three-phase I, U, kW, Kvar, KVA, kWh, Kvarh, Hz, cosΦ; THDu, THDi, 2-31th order harmonic components; four-quadrant power, RS485/Modbus, LCD display
200
Station control management
Workstation host
RPC-610 Core2 2.8G/2G/500G + Keyboard
station
1
North China Industrial Control
monitor
19W "LCD Monitor
station
1
AOC
UPS power supply
MT1000
station
1
SANTAK
printer
A4 format
station
1
　
Console
Steel wood structure with a chair
set
1
Shanghai Xiangming
Energy Analysis Software
System Configuration Software Acrel-5000
set
1
Ankerui
Energy Analysis Software
Data Storage Software Acrel-dbSQL
set
1
Ankerui
Energy Analysis Software
Energy Management Software Acrel-EnerSys
set
1
Ankerui
Energy Analysis Software
Device Driver Software Acrel-Driver
set
1
Ankerui
Energy Analysis Software
Report Analysis Software
set
1
Ankerui
Energy Analysis Software
Environmental monitoring software
set
1
Ankerui
Network communication layer
Industrial network switch
D-LINK 8 port
station
1
D-LINK
Industrial Serial Server
NPORT5630-16 RS485 interface × 16
set
2
MOXA
3.4 System Functions
3.4.1 System energy consumption monitoring consists of energy monitoring platforms, switches, multi-function electricity meters, communication converters, remote water meters and other equipment . The key functions of this system are water and electricity consumption.
3.4.2 Supporting the collection and management of energy, water, and other energy data under a unified network architecture. The energy consumption data collection does not need to be integrated in multiple different systems. The energy monitoring and management system contains a wealth of functions and can be applied to buildings or buildings. Various types of energy ( electricity, water ) are separately counted and managed in a unified manner, and energy consumption data are automatically collected, analyzed, and excavated, and continuously optimized .
3.4.3 The system collects the parameters sent from the intelligent measurement and control unit device, including the real-time energy value and various alarm information of each power circuit , the water consumption of each water meter, etc. , and real-time display of each parameter collected .
3.4.4 Each energy management group reports on energy consumption on a time-by-day, day-by-day, month-by-month, and yearly-by-year basis to help users master their own energy consumption and identify abnormal energy consumption .
3.4.5 System Support Remote browsing based on the Internet , different energy management departments can simultaneously check the consumption of required energy in different locations.
3.5 System Functions and Software Interface
3.5.1 Statistics of Classification and Item Energy Consumption
The system has the storage function of historical data, alarm information, etc. The storage history data is saved for more than three years. The system also has the function of sending classified and itemized energy consumption data to higher-level data centers according to the requirements of "energy data that needs to be sent to the upper-level data center." The interface is shown in Figure 1.
3.5.2 Real-time monitoring of energy consumption data
The system has a good openness, can expand the function of the user's requirements, and customize the personalized report and analysis template for the user based on the basic analysis function; the system has an alarm management function, responsible for the transmission of alarms and events, alarm confirmation and alarm recording Function to inform the user or for user inquiries; the system has rights management, system log and system parameter settings and other functions. The interface is shown in Figure 2.
3.5.3 Analysis of the same-ring and ring-to-loop ratio of energy use
Monthly, year-on-year or quarter-by-month analysis of energy consumption (standard coal or kilowatt-hours) and energy consumption per unit area (standard coal or kilowatt-hours) for each category, sub-item, etc. It can preset, display, query and print the statistical report of energy consumption of common buildings. The interface is shown in Figure 3.
3.5.4 Analysis of Building Energy Consumption Data
After collecting and summarizing classification and itemized energy consumption data, the system can generate various data charts, pie charts, and bar charts, and reflect and compare the values, trends, and distributions of collected data and statistical data in real time. The system can be summarized daily, month by month, year by year based on total energy consumption and energy consumption per unit area, and displayed, searched, and printed in various forms such as coordinate curves. The interface is shown in Figure 4.
3.5.5 Remote Network Access Function
After the system is published on the Web, remote network access is available. Based on the .Net platform, it is developed using ASP.Net and JQuery technology and can be accessed through the Internet. It has cross-platform features and users can access it through various mobile terminals (notebooks, tablet computers, mobile phones, etc.). The interface is shown in Figure 5.
Figure 5 Cross-platform cross-network data access
4 Conclusion
With the wide application of the community development and power, energy management analysis system has become the inevitable choice of large metallurgical enterprises, this article describes Acrel-5000 power meter and energy management analysis system application India 50 tons of coking projects, energy can be Data analysis, processing and processing, energy dispatchers and professional energy managers will be able to know the status of the system in real time and make reasonable adjustments through the system to ensure that the system operates in the best condition. To realize the optimization and reengineering of energy monitoring and energy management processes based on information analysis, to meet the automation of energy equipment management, operation management, etc., to establish an objective data-based energy consumption evaluation system, and to provide benefits for management. Save energy and improve the environment by optimizing energy dispatch and balancing command systems
As the largest trading partner in South Asia, India is an important exporter of commodities in our country, and it is also an importer of important products such as raw materials and software in China. India's energy management applications more experience coking plant project analysis system for our company, promote the development of our company in a foreign country metallurgical engineering analysis energy management system, accumulated by the company in engineering in the field of metallurgy.
ã€references】
[1] Long Weiding . Building Energy Conservation and Building Energy Efficiency Management . Beijing: China Building Industry Press, 2005
[2] Shanghai Anke Rui Electric Co., product manuals .2013.01. Edition
About the Author:
Xu Shuang, female, undergraduate, Ankerui Electric Co., Ltd., the main research direction for the smart grid power distribution, Email: Mobile QQ
"Atlas of Design and Application of Building Energy Consumption Monitoring and Management System" (atlas number: ACR12CDX301) edited by Ankerui Electric Co., Ltd. and Shandong Construction Electrical Technology Information Network, this atlas combined with Acrel-5000 energy consumption The monitoring system complies with the electrical design specifications and meets the requirements for the construction of energy-saving supervision systems for office buildings and public buildings of state agencies, to achieve the scientific and data-based management of green building energy use, and to achieve the goal of saving energy and reducing consumption of green buildings. The Atlas is applicable to the system design, construction, operation and maintenance of energy monitoring and management of office buildings and public buildings of newly-built or rebuilt national offices. If you need atlas, please provide your organization's name, department, address, zip code, contact person, contact telephone number, email address, fax 021-69155331, mail or QQ to Ankeru Xu cream engineer, Ankerui Electric will give you a free gift. .
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