Xu Shuang Ankerui Electric Co., Ltd. Jiading 201801 I. Hotel Overview Radisson Hotel Liuzhou Liuzhou is the first international five-star standard hotel, located in the scenic east bank of the River meandering Liuzhou central business district, and municipal plaza across the street, near Liuzhou railway station, with a total construction area of 45,000 square meters. The hotel has 260 well-designed rooms and suites of internationally renowned designers (including presidential suites), and 270-degree views of Riverview rooms provide a panoramic view of Liujiang and Liuzhou. The hotel has a novel design, a modern style and a local Zhuang ethnic minority style. It combines elegant and comfortable guest rooms, advanced conference services, dining and entertainment facilities, and the core service concept of Carlson Group “Yes, I Can!†as a guest. Providing excellent services, Radisson Blu Hotel Liuzhou is committed to creating an international brand of five-star standard hotels with ethnic customs, making it the preferred location for business activities and vacations. As an international star-rated hotel, the original Laguna Hotel's distribution system uses pointer current and voltmeter, which can only be operated through the hand-cutter . The related equipment could not achieve self-control, and related data could not be monitored, causing a large amount of hotel energy wastage. At the same time, the hotel's energy-saving and emission reduction work could not be carried out normally. Today, in the context of the government's call for energy-saving and emission-reduction, its property management attaches great importance to energy conservation and consumption reduction. Energy conservation has been listed as one of the key tasks of the hotel .  The site has a total of two power distribution rooms with a total of 67 PZ48-AI3/C meters. After the energy-saving transformation, the incoming line adopts a multi-function meter, and each branch uses an ammeter. In the “surgery†of the energy-saving renovation of the Radisson Hotel in Liuzhou , the user considers more factors such as system stability, control accuracy, technical service, and equipment maintenance. So by the end of 2011, hotel investment considering the benefit-cost ratio, long-term use and maintenance costs, the practical effects of such factors as the final selection Acrel Electric Co., independent research and analysis of Acrel-5000 energy management systems and field signal acquisition device, The building's building automation control system was transformed into energy-saving, and the monitoring and management of the electromechanical equipment in the building was realized. The new automatic control system provides hotels with a healthy, comfortable and clean air environment. On the other hand, it monitors and guarantees the normal operation of various equipment, and finally realizes the work index of the entire hotel for energy conservation and emission reduction. Acrel-5000 Energy Analysis Management System implements automatic monitoring and control of all air conditioning unit equipment, ventilation and exhaust equipment, cold and heat source equipment, water supply and drainage system equipment, and lighting equipment within the building, and also collects, records, saves and manages The important information and data of the system improve the operating efficiency and ensure the special needs of the working environment. The purpose is to save energy, save manpower and maximize the life of the equipment.  Third, the difficulties in the process of hotel management system transformation 1. Some points of contact instability are caused by aging electrical equipment; 2. It is difficult for the electrical control cabinet to provide part of the control points, resulting in insignificant control effects; 3. It is difficult to run parallel inside the hotel during construction, and it is not suitable for the normal operation of the hotel. Therefore, according to the characteristics of long product field bus distance and large module expansion capability, we try to vertically route the line and use a field network line for the horizontal line, thus solving this problem; 4. The network structure, alignment conditions and functions of the original system must be checked before the renovation and construction, which is conducive to the construction of the new system. The nature of the previous building control system product itself led to the network design is not very reasonable, resulting in a large waste of wiring, and the layout of the entire hotel building control system network structure is chaotic. In this year's retrofit design, we fully considered the defects of the original design, combined with the flexible features of the new product to integrate the entire hotel system, making the entire hotel network more rational. 5, most of the supporting cast this transformation equipment sensors, transformers, etc. with the original system, but some of the equipment is not very precise control accuracy and sensitivity decreases, the hotel has added a number of new sensors, transformers and electrical equipment interfaces. Acrel-5000 energy analysis management system is compatible with aging electrical cabinets, sensors and other equipment from different brands and all newly added equipment, making the control more difficult. After repeated testing of the equipment, the system is repeatedly tested and finally reaches the control. effect; Fourth, the hotel energy-saving program Energy-saving planning: (1) Energy consumption measurement, the first purpose is to calculate and assess, there is a complete management data; the second purpose is to effectively control the waste of energy departments and equipment through the analysis and comparison of the measured data. Energy metering is equipped with water meter, electricity meter, steam meter and other measuring instruments can accurately save the report for viewing and analysis. (2) Energy consumption analysis, historical and trend analysis through various information and data, establishment of scientific and effective energy-saving operation modes and programs, in order to achieve a good energy-saving effect. Energy Saving Control: (1) Energy-saving control of the freezer room, data acquisition, selection of the number of chiller units, frequency conversion control of chilled water pumps, cooling water pumps, and quantity control of cooling tower fans. (2) Energy-saving control of heat exchanger, data acquisition, selection of heat exchanger number, temperature control and over-temperature alarm. (3) Energy-saving control of air conditioners, fresh air, exhaust fans, temperature control, adjustment of new air valve, part of variable frequency control, air quality detection and automatic control. (4) Fan coil energy-saving control, remote adjustment and monitoring management. (5) Lighting energy-saving control and management. (6) Measurement of boiler energy consumption and accumulation of steam flow. (7) Variable distribution power metering. (8) Energy measurement of hot and cold water supply and return water. Energy Management: (1) Air-conditioning system running energy-saving management. According to the schedule, the air-conditioner new air unit is turned on in advance, and the air valve opening degree and water valve opening degree are adjusted according to the temperature and humidity threshold. The unit is regularly maintained through the cumulative operating time of the fan to extend the life of the electromechanical device. (2) Energy-saving management of cold and hot water systems. The frequency of the inverter is controlled by the pressure difference, and the automatic control of the freezing water pump is realized in a closed-loop condition. Through the return temperature of the cooling water, the number of cooling tower fans is automatically selected in closed-loop conditions. The chillers and pumps are regularly maintained through the cumulative operating time of all equipment to extend the life of the electromechanical equipment. (3) Lighting system running energy management. Public lighting is turned on through the timetable. Some public lights are turned on at night, and the corresponding number of lighting paths is turned on when someone enters. V. Hotel Energy Analysis Management System Introduction 1, system network topology The intelligent power monitoring system is composed of intelligent monitoring and control devices, network equipment and computer equipment. The system can adopt different topologies due to different project scales, different functions and capabilities, different degrees of importance, and different levels of user investment. However, no matter what topology structure is adopted, the layered distributed design concept of “station control management layer—network communication layer—field device layer†is adopted. This layered design meets the current standards for communication system design and implementation. The monitoring and control functions can be relatively completed at each level. That is, it can achieve remote monitoring and control, and it can also affect the current layer and the next layer when the upper layer fails. Features. The network topology of the energy management system at the Radisson Hotel in Liuzhou is shown in Figure 1. Figure 1 System network topology The specific form of each structural layer is as follows: (1) Master Station (Station Control Management) Located in the monitoring room, specifically including: back-end hosts and other related peripherals with intelligent power monitoring system installed. Responsible for unpacking the data uploaded by the communication interval layer, performing centralized management and analysis, performing related operations, and being responsible for the overall monitoring of the entire power distribution system. The intelligent power monitoring system provides dedicated communication function modules, and sends relevant data and information to the next-level system (such as BAS, DCS, or dispatch system) via OPC or other communication protocol through a dedicated Ethernet hardware communication interface to implement the system. Integration. (2) Communication bay layer (network communication layer) The communication manager is used to communicate with various devices on the field device layer, collect data and parameters of various devices, process the packet and transfer them to the master station layer, and at the same time as the relay unit, accept the instructions issued by the master station layer. , forwarded to the field device layer devices. (3) Field device layer Located in the low-voltage transmission and distribution site, including: ACR multi-function power meter , PZ ammeter , is responsible for collecting all kinds of data and information status of the power site, sent to the communication interval layer, and also as an execution unit, execute the communication interval layer issued Various types of instructions. 2, software design reference standards and basis l GB/50198-94  "Monitoring System Engineering Technical Specifications" l GB/T13730  "Regional Power Grid Data Acquisition and Monitoring System General Technical Conditions" l DL/T630  "AC sampling remote control terminal general technical conditions" l GB/T13729  "Remote Acting Terminal General Technical Conditions" l GB2887  "Technical Requirements for Computing Station Sites" 3, the device parameter list No. name Model, specification unit Quantity Note 1 Field device layer 　 Power Meter 　 only 67 2 Station control management 　 Workstation host EVOC IPC-810B Core2 2.66G / 1G/250G + keyboard and mouse station 1 Yanxiang monitor 19W "LCD Monitor station 1 Samsung UPS power supply C1K/1KVA station 1 SANTACK printer HP 1007 A4 format station 1 HP system software Genuine Microsoft WINDOWS XP/SP3 set 1 Microsoft Power Management Software System configuration software Acrel-3000V6 set 1 Ankerui Power Management Software Data Storage Software Acrel-dbSQL set 1 Ankerui Power Management Software Energy Management Software Acrel-EnerSys set 1 Ankerui Power Management Software Device Driver Software Acrel-Driver set 1 Ankerui 3 Network communication layer 　 Industrial Serial Server NPORT5630-8 RS485 interface × 8 set 1 MOXA 4, system function The intelligent power monitoring system should have complete network management functions. The topological structure of the network is a pyramid structure. The more complex the network structure is downward, the more types of equipment are, and the larger the number of devices, the more difficult it is to manage and maintain. The Acrel- 5 000 energy management system developed by Acrel Company has a powerful and advanced network management subsystem that puts the operating equipment and operating status of the power distribution system into continuous and accurate monitoring of milliseconds and cycles. in. a. Friendly Human-Machine Interface (HMI) The standard power distribution system has a CAD one-line diagram to show the wiring conditions of the low-voltage distribution network; the huge system has the function of multi-screen switching and screen navigation; the distributed power distribution system has the system's main screen of the spatial geographic plane. The main screen can visually display the operating status of each loop, and has the functions of live, uncharged and fault-colored circuits. The main electrical parameters are directly displayed on the human-machine interface and refreshed in real time. b, user management This software can give different levels of users different permissions to ensure the security and reliability of the system during operation. For example, if an operator is required to enter an operation password for an important loop, the user must enter the confirmation password before completing the operation. c, data acquisition and processing The system can collect real-time and time-scheduled data of the electrical parameters and status of the on-site equipment (including three-phase voltage, current, power, power factor, frequency, power, temperature, switch position, equipment operation status, etc.), and the collected data or Directly display, or generate new intuitive data information through statistical calculations and then display (total system power, load maximum, power factor upper and lower limit, etc.), and store important information volume in the database. d. Trend curve analysis The system provides two kinds of curve analysis interfaces: real-time curve and historical trend. The current load status of the loop is analyzed by calling the relevant loop real-time curve interface. For example, by invoking the real-time curve of a given loop, the signal fluctuation caused by the electrical equipment of the loop can be analyzed. The historical trend of the system is that the system can view its historical trend for all stored data, facilitating the quality analysis of the monitored distribution network by the engineering personnel. e. Report Management The system has a standard power report format and can be designed to meet the needs of the report format according to user needs, the system can automatically statistics. Various types of real-time running reports, historical reports, event failure and alarm record reports, operation record reports, etc. can be generated automatically. All data values ​​recorded by the system can be queried and printed, and daily, monthly, quarterly, and annual reports of electric energy can be generated automatically. According to the time period of the multi-rate and the set value of the rate, the rate report for generating energy can be set. The parameters such as the starting point and interval for query printing can be set by themselves; the system design can also be tailored to meet the different requirements of the report output function according to user requirements. f, event recording and fault alarm The system has detailed recording functions for all user operations, switch-displacement, parameter violation, and other events that the user actually needs, including information on the time and location of the event, whether the current person on duty is acknowledging the event, and so on. The limited information also has an audible alarm function. At the same time, it automatically sends a control instruction to the operating device or prompts the on-duty personnel to quickly eliminate the fault. Sixth, concluding remarks The physical comfort requirements of the guests are very strict for the international five-star standard luxury hotel. According to the five-star standard, the electromechanical equipment in some parts of the hotel may have to run for a long time, so satisfying the guests is the first one. How we do energy management becomes a big problem.  The goal of energy management system is to help the owner statistics, through data analysis, to make energy-saving strategies, and to achieve energy-saving goals through reliable energy-saving strategies. The system's own energy-saving comes from the design of the system, but this is not the ultimate energy-saving goal. Therefore, the energy- saving design of the energy management system itself also comes from the needs of the property operation. The property management model determines energy-saving. It is not that installing a building-control system is energy-saving. references: [1]. Ren Chengcheng, Zhou Zhong. Principles and Application Guide for Digital Meters for Electric Power Measurement [M]. Beijing. China Electric Power Press, 2007. 4 [2].Zhou Zhong. Application of Power Meters in Energy Metering of Large-scale Public Buildings [J]. Modern Building Electronics 2010. 6 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. . Blower Motor For Mercedes Benz Blower Motor For Mercedes Benz,Mercedes Benz Blower Motor,Mercedes Blower Motor,Hvac Blower Motor ZHEJIANG DEYE AUTOMOBILE PARTS CO.,LTD , https://www.deyemotor.com
Second, energy-saving renovation 
Through this energy-saving transformation, we will train more technical personnel who understand the energy management system and management personnel of energy-saving analysis for the hotel to facilitate future maintenance and energy-saving management, so that the real-operation of the building control system will have the effect of energy saving. BAS has entered the mistaken idea of ​​energy saving, and it should not become a decoration for users.