Application of Acrel-5000 energy consumption monitoring system in Jinling Hotel Project

Miao Jianmei 11 ankerui Electric Co., Ltd., Jiading, Shanghai 201801; Abstract: the total area of large public buildings is less than 4% of the total area of urban buildings, but the total energy consumption accounts for 22% of the total power consumption of the whole country The annual power consumption per unit area of large public buildings reaches 70-300kwh, 10-20 times of that of ordinary residential buildings Public buildings are the major energy-saving households and the focus of energy conservation To do a good job in energy conservation of public buildings is of great significance to promote and drive the energy conservation of the whole society, achieve the goal of energy conservation and emission reduction, and implement the major strategy of "transformation of mode and structure" This paper introduces the project of Jinling Hotel, which adopts intelligent electric instruments to collect various electric parameters and switch signals at the distribution site The system adopts the method of field local networking After networking, it communicates with the field bus and transmits it to the backstage It realizes the power monitoring and management of the distribution circuit through the Acrel-5000 building energy consumption monitoring system Keywords: hotel; energy consumption monitoring system; acre-5000; Introduction: at present, China is the second largest energy producer and consumer in the world Statistics show that China's building energy consumption accounts for about 28% of the total energy consumption in the country Among the 2 billion square meters of Newly-built buildings in China every year, 99% are high energy consumption buildings, while only 4% of the existing buildings have taken energy-saving measures Large public buildings not only have high energy consumption density, but also serious energy waste They have huge energy-saving space The promotion of building energy conservation is imperative Energy conservation and consumption reduction, measurement first Relevant local codes require that "building energy consumption monitoring system shall be included in the construction plan as an integral part of the new building equipment and facilities system; Jinling Hotel project is a large public building 2 Design basis: gbt23331-2009 requirements for energy management system gb-50052-2009 code for design of power supply and distribution system ◆ national and industrial standard for energy consumption metering device DL / T 645-1997 communication protocol for multi-functional energy meter DL / T 645-2007 communication protocol for multi-functional energy meter CJ / T 188-2004 Jinling Hotel is located in the Stone Lake scenic area adjacent to "half lake Jasper", north of Nanxijiang Road, west of Xixiu Road, with beautiful environment and scenery Suzhou Xijiang Industrial Development Co., Ltd has invested in the construction of a large-scale comprehensive business conference Resort Hotel, which is under the management of Jinling Hotel management company with full authorization and is invested and built according to the five standard specifications The hotel contains rich tourism resources, including accommodation, catering, conference, health and many other service functions After completion, it will be a landmark building in the Stone Lake area of Yuexi Through the collection, analysis and processing of instrument data, through the analysis of data, energy efficiency can be improved, energy management level can be effectively promoted and guaranteed, and play an important role in system energy saving 4 System architecture: acore-5000 building energy consumption analysis management system according to the actual situation of Jinling Hotel, the overall network structure adopts shielded twisted pair to connect directly to the communication gateway of the strong current well on the floor, and then upload the data to the monitoring host through the network cable fiber The system mainly adopts hierarchical distributed computer network structure, as shown in the system structure diagram: station control management layer, network communication layer and field equipment layer The field equipment distribution of Jinling Hotel project is as follows: system structure figure 5 system software module integrated energy consumption main interface It reflects the energy consumption of each classification of building energy consumption in the current year and the comprehensive energy consumption converted into standard coal, and calculates the energy consumption per unit area Although there are many energy consumption classifications in the building, the main energy that can be measured by meter are electricity, water, gas and renewable energy The hourly energy consumption curve of the day of these four types of energy consumption is displayed at the bottom of the interface Click the upper area of each classification of energy consumption to Jump to the energy consumption analysis main interface of the classified energy consumption; you can switch buildings through the drop-down box, and the building pictures can be replaced according to the project requirements; ◆ the classified energy consumption main interface reflects the energy consumption and comparison, growth percentage and added value of a classified energy consumption (such as electricity) on the same day and the same period of yesterday, the same month and the same period of last month, the same year and the same period of last year Reflect the energy consumption trend of a classified energy consumption in the past 48 hours, 31 days, 12 months and 3 years; reflect the energy consumption pie chart of a sub item energy consumption in the current month; reflect the year-on-year analysis chart of energy consumption of each month of a classified energy consumption in the current year; ◆ statistical report of energy consumption by branch of classified energy consumption Flexible selection of branches and statistics of daily, monthly, weekly, quarterly and annual energy consumption of branches in a certain period of time; powerful through table function, users can make a variety of data statistics and sort the data by combination; statistical data can be displayed by histogram, dotted line chart, stacked chart, pie chart and other charts; statistical data can be exported to excel ◆ classified energy consumption branch non working day energy consumption statistics for each branch working day and non working day energy consumption, which can be set flexibly through the system; statistical data can be exported to excel; ◆ classified energy consumption branch year-on-year analysis; statistics of each branch monthly energy consumption in the current year and energy consumption in the same period last year; ◆ classified energy consumption branch energy collection Inquire the meter reading of any two times of each branch, and calculate the travel value; the time precision is to minutes; ◆ analyze the energy consumption trend of classified energy consumption branch in different periods The energy consumption parameters (such as voltage, current, power, power factor, etc.) of any branch in a certain period of time can be queried The specific parameters that can be queried are related to the installed instrument and system configuration, and the query cannot span months The data is displayed in the form of charts or tables, which can be zoomed in, zoomed out and moved by mouse operation The data can be sorted (Zui large value, Zui small value); the number It can be exported to excel; ◆ configuration options Configure the basic information of the building according to the relevant technical specifications, such as building function, building area, air conditioning area, building address, etc., in which the building area and other information will be analyzed for energy consumption per unit area; configure the basic information such as the type, model and manufacturer of the instrument used in the project, and add the monitoring parameter information provided by the instrument, which is configured here The situation affects the functions of energy consumption statistics, energy consumption statistics by period and parameter query All measuring instruments used in the configuration project shall be stored with information such as the address, transformation ratio, corresponding collector, code, name of monitoring circuit, etc.; the information such as the meter, proportion, calculation method, etc involved in the configuration of sub item energy consumption statistics can be flexibly configured according to the project situation, and the configuration information here will affect the energy consumption analysis of sub items of each classification Functions in the module; configure the meters, calculation methods, proportion and department energy consumption plan corresponding to the energy consumption of each department, and enable the Department energy consumption analysis function module after completing this configuration; configure the meters, calculation methods and proportion corresponding to an energy consumption area in the building, and enable the regional energy consumption analysis function module 6 after completing this configuration Prospect: according to the analysis of energy consumption operation effect of Jinling Hotel, the typical energy consumption analysis model is established and unified analysis is carried out ◆ establish the building energy consumption measurement system, grasp the building energy consumption, find out the dark curtain of energy consumption, and make the energy-saving transformation more targeted At the same time, consolidate the achievements of energy-saving transformation through measurement, charging, performance evaluation and other management measures ◆ select energy-saving equipment (frequency converter, heat recovery device) ◆ no matter how good the energy-saving equipment is, waste cannot be managed and energy-saving effect cannot be brought into play By adding automatic energy-saving equipment, formulating equipment operation strategy, reducing human intervention and centralized management and control, energy-saving equipment is realizing energy conservation ◆ through the same link ratio analysis data provided by the energy consumption monitoring system to quantify the energy-saving transformation results, Zui shows the energy-saving effect to a large extent 7 conclusion: the total area of large-scale public buildings is less than 4% of the total area of urban buildings, but the total energy consumption accounts for 22% of the total power consumption of the whole country The annual power consumption per unit area of large-scale public buildings is 70-300kwh, 10-20 times of that of ordinary residential buildings Public buildings are the major energy-saving households and the key point of energy conservation To do a good job of energy conservation in Jinling Hotel is of great significance to promote and drive energy conservation and achieve the goal of energy conservation and emission reduction References: [1] Technical requirements of the Ministry of housing and urban rural development [2] Design standard for energy efficiency of public buildings (gb50189-2015) Brief introduction of the author: Miao Jianmei, female, undergraduate, ankerui Electric Co., Ltd., whose main research direction is smart grid power supply and distribution