Abstract: According to the "Measures for Energy Conservation in Key Energy Consumption" (Decree No. 15 of 2018 by the Seventh Ministries and Commissions including the National Development and Reform Commission) and "Work Plan for the Promotion and Construction of Online Energy Consumption Monitoring System for Key Energy Consumption Units" (Fa Gai Huan Zi  No. 1711) ) and the "Notice on Accelerating the Construction of an Online Monitoring System for Energy Consumption of Key Energy-consuming Units" (Fa Gai Ban Huan Zi  No. 424), the Hunan Provincial Development and Reform Commission and the Provincial Market Supervision Administration have researched and formulated the promotion and construction of the Hunan Provincial Terminal System. The purpose of the plan is to basically achieve access to "hundreds" and "thousands" of key energy-consuming units by the end of 2020, and to achieve access to "ten thousand" key energy-consuming units by the end of 2021. The Acrel-5010 online monitoring system for key energy consumption unit energy consumption developed by our company according to "NHJC–01-2018 Key Energy Consumption Unit Energy Consumption Online Monitoring System" helps Hunan Sanli Group Co., Ltd. realize the construction of key energy consumption unit end systems.
Key words: key energy-consuming units; online monitoring; millions;
According to the requirements of the National Development and Reform Commission and the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on Printing and Distributing the Work Plan for the Promotion and Construction of the Online Energy Consumption Monitoring System for Key Energy-consuming Units (Fa Gai Huan Zi  No. 1711), the Internet of Things, cloud computing and other technologies In order to support, vigorously promote the construction of an online monitoring system for energy consumption of key energy-consuming units, accelerate the improvement of energy measurement systems for key energy-consuming units, improve the level of refinement of energy management, integrate the Internet with energy-saving work, improve energy-saving macro-control capabilities, and promote the completion of Total energy consumption and intensity "dual control" target tasks.
On April 4, 2019, according to the "Notice of the General Office of the General Office of the National Development and Reform Commission, the General Office of the State Administration of Market Supervision on Accelerating the Construction of an Online Monitoring System for Energy Consumption of Key Energy-consuming Units" (National Development and Reform Commission Development and Reform Office Huanzi  No. 424) requirements, accelerate the construction of an online monitoring system for energy consumption of key energy-consuming units, and require the development and reform commissions, market supervision bureaus (departments, commissions) of provinces, autonomous regions, and municipalities directly under the Central Government, relevant regional industry and information commissions (departments), and energy bureaus to implement the goals. Responsibilities, accelerate system construction, effectively improve data quality, strengthen supervision and supervision, and strengthen policy guarantees.
The Acrel-5010 online monitoring system for key energy consumption unit energy consumption developed by our company according to "NHJC–01-2018 Key Energy Consumption Unit Energy Consumption Online Monitoring System" helps Hunan Sanli Group Co., Ltd. realize the construction of key energy consumption unit end systems.
1. Project Overview
Hunan Sanli Group Co., Ltd. is a comprehensive joint-stock private enterprise integrating non-ferrous metal mining, beneficiation and smelting in western China. The company is located at the junction of Hunan, Guizhou and Chongqing, and is located in Huayuan County. It is a large-scale joint-stock private enterprise mainly engaged in non-ferrous metal smelting.
This project is an online monitoring and uploading project for key energy-consuming units. The terminal system covers the measurement of primary and secondary energy consumption. Electricity and water are automatically collected through on-site instruments; coal and diesel are manually reported, and the data is confirmed to be uploaded to the provincial key points. An online monitoring system platform for unit energy consumption.
2. Enterprise energy status analysis
Hunan Sanli Group Co., Ltd.'s production energy is mainly electricity, coal, diesel, etc., and the energy-consuming working medium is water. Among them, electricity, coal, diesel oil and water are purchased from outside. Water is provided by the water company to provide tap water and extract river water for production, office or domestic use in the plant area.
The power purchased by the enterprise is used for power-consuming equipment such as power, electrolysis, and material transportation in each branch, auxiliary power for workshops, lighting, etc.; Diesel is mainly used for roasting and ignition in boiling furnace and for forklift transportation and forklift transportation power in auxiliary production systems; steam is produced and used by itself, mainly used for liquid preparation and electrolysis process of electrolytic zinc production system; water is mainly used for production water and other Office, domestic water, etc.
(1) Power flow
The power of the enterprise is mainly supplied by the 110kV substation in the factory area and the county electric power company provides a 10kV power supply. Electric zinc plant, sulfuric acid plant, comprehensive recovery plant and casting workshop take electricity from the company's 110kV substation, and the base electrolysis and living and office electricity are taken from the county power company's 10kV line, as follows:
(2) Diesel flow direction
The diesel fuel of the enterprise mainly flows to the boiling furnace for ignition and transportation vehicles in the factory.
(3) Coal flow
The coal of the enterprise is mainly used for the supplementary steam of the boiler when the steam supply of the waste heat boiler in the electric zinc plant is insufficient in winter and the domestic coal of the canteen.
(4) The flow of water
The tap water of the enterprise is mainly used for the production of sulfuric acid plant, the cooling of electrolysis workshop, the softening water station and the water for living and office, as follows:
According to the energy online monitoring requirements and the on-site situation of the enterprise, the data and methods included in the monitoring are as follows:
The primary and secondary metering of electricity and water is automatically collected by on-site instruments; the primary and secondary metering of coal and diesel is manually reported, and the confirmed data is uploaded to the online monitoring system platform for energy consumption of key provincial energy consumption units.
For the end system to cover the first and second level energy measurement, the requirements of real-time collection, monitoring and transmission of energy consumption data, the main problems currently exist:
(1) At present, only one total water meter in the Sanli plant has the function of automatic data collection, and the other water meters are mechanical meters and need to be replaced. The procurement and replacement of water meters are currently being arranged.
(2) The 2-way 485 communication interface of the county's total electric energy meter has been used, and it is necessary to coordinate to add an additional table to meet the requirements of automatic collection.
(3) The monitoring and collection points are scattered, and the 220V power supply needs to be connected to the nearest point.
3. Networking scheme
The on-line monitoring system of key energy consumption unit energy consumption can generally be divided into three layers from the structure.
Acquisition layer: The acquisition layer mainly measures the energy consumption of each plant area by installing energy meters such as electricity meters and water meters on site. All instruments adopt intelligent remote transmission instrument with communication interface. The instrument can use the RS485 field bus for networking and data transmission through the Modbus protocol.
Transmission layer: The transmission layer is mainly through the use of our ANet series intelligent gateway. The main function of the intelligent gateway is to collect the data of the metering meter through the RS485 bus and various communication protocols, and transmit the data through the operation and maintenance protocol through the protocol conversion function of the gateway. in the gate. The main functional characteristics of the gateway support protocol conversion, data encryption transmission, and support for breakpoint resume transmission.
Platform management layer: The platform management layer mainly deploys different services in the host computer of the gatekeeper. The platform management layer provides a series of services to meet the needs of data processing, online monitoring and real-time uploading.
4. Introduction to platform functions
(1) Whole-site kanban: The whole-plant kanban page briefly displays the basic information of the company; the whole-plant energy consumption shows the daily, monthly and annual energy consumption per ton of standard coal, and the pie chart shows the proportion of different energy consumption of the company; The energy trend shows the daily energy consumption trend of the same category of energy consumption; the upload information shows the uploading situation of key energy consumption units.
(2) The parameter query page can query the power, current, voltage and other parameters of different measuring instruments according to time.
(3) The platform can calculate the unit consumption of the product according to the collected energy consumption and the input product output.
(4) Real-time online monitoring of the power distribution of the whole plant (voltage, current, power, electric energy)
(5) Record data upload log
5. Recommended equipment
5.1 End Device
The energy consumption online monitoring terminal equipment is placed in key energy-consuming units to realize functions such as data access, security isolation, data processing, storage and uploading, and operation and maintenance management. Network security and information security protection should comply with relevant standards and the needs of the enterprise itself. The structure is shown in the following figure:
5.2 End Device Hardware Parameters
v Single motherboard adopts low-power processor;
v Single motherboard memory size 4G;
v Hard drive: 128G solid state drive
v Independent dual host "2+1" architecture non-IP physical isolation;
v With VGA interface, an external monitor can be connected, which is convenient for on-site maintenance operations;
v Dual redundant switching power supplies, which are mutual backup, support hot swap, ensure the reliability of end equipment, and have the function of sound and light alarm for power failure;
v 8 RS485 serial ports;
v 6-way Gigabit Ethernet;
v 4 USB ports, which can be used for CA certificate interface;
5.3 Product Certification Security
The product has passed the network isolation test and certification of the Computer Information System Security Product Quality Supervision and Inspection Center of the Ministry of Public Security, and has obtained a special sales license for computer information system security and an electromagnetic compatibility certificate.
Network isolation detection and certification
5.4 ANet Energy Gateway
ANet series energy gateways can centrally collect energy measuring instruments scattered in the enterprise and upload them to the end equipment to meet the requirements of water, electricity, gas, oil, cooling, Various forms of energy consumption measurement and sub-item data collection requirements such as heat, with easy-to-use data configuration software tools, can quickly configure the required collection data and upload data center and other parameter information.
Relevant reports and certificates
GB/T 17626.2-2018 "Electrostatic discharge immunity test of electromagnetic compatibility test and measurement technology" level 4.
GB/T 17626.6-2017 "Electromagnetic Compatibility Test and Measurement Technology Radio Frequency Electromagnetic Field Radiation Immunity Experiment" Level 3.
GB/T 17626.4-2018 "Electromagnetic Compatibility Test and Measurement Technology Electrical Fast Transient Burst Immunity Test" Level 4.
GB/T 17626.5-2019 "Electromagnetic Compatibility Test and Measurement Technology Surge (Shock) Immunity Test" Level 4.
GB 9254-2016 "Radio Disturbance Limits and Measurement Methods of Information Technology Equipment" is qualified.
Since the state issued the online monitoring policy of key energy consumption unit energy consumption, our company has responded enthusiastically. This article introduces the application of Acrel-5010 key energy consumption unit energy consumption online monitoring system in Hunan Sanli Group. Online monitoring of consumption and data upload. At the same time, the system realizes the analysis of the collected data, energy consumption trend, energy consumption alarm, various data report analysis curves, graphics, etc., which is convenient for data analysis, research and mining energy saving potential.
"NHJC-01-2018 On-line Monitoring System for Key Energy Consumption Unit Energy Consumption – Overall Architecture Specification"
"NHJC-02-2018 On-line Monitoring System for Key Energy Consumption Unit Energy Consumption-Basic Information and Format Specifications"
"NHJC-03-2018 Online Monitoring System for Key Energy Consumption Unit Energy Consumption-System Platform Interface Protocol Specification"
"NHJC-04-2018 On-line Monitoring System for Key Energy Consumption Unit Energy Consumption-End Equipment Interface Protocol Specification"
"NHJC-05-2018 Online Monitoring System for Key Energy Consumption Unit Energy Consumption – Provincial Platform Computer Room and Hardware Configuration Specification"
"NHJC-06-2018 On-line Monitoring System for Key Energy Consumption Unit Energy Consumption-Technical Specification for Terminal Equipment"
"NHJC-07-2018 On-line Monitoring System for Key Energy Consumption Unit Energy Consumption – Energy Variety Collection Specification"
"NHJC-08-2018 On-line Monitoring System for Key Energy Consumption Unit Energy Consumption-System Safety Specifications"
"NHJC-09-2018 On-line Monitoring System for Key Energy Consumption Unit Energy Consumption-Provincial Platform Functional Specifications"
"GB/T15587-2008 Guidelines for Energy Management of Industrial Enterprises"
"GB/T23331-2012 Requirements for Energy Management System"
"GB/T2598-2008 General Principles of Comprehensive Energy Consumption Calculation"
"GB/T3484-2009 General Principles of Enterprise Energy Balance"
"GB/T38692-2020 Technical requirements for online monitoring of energy consumption per unit of energy"
Reviewing Editor Huang Haoyu