Overview Hangzhou Sanofi Minsheng Health Pharmaceutical Co., Ltd. is one of the world's leading pharmaceutical companies, and is a joint venture between Sanofi-Aventis and Hangzhou Minsheng Pharmaceutical Co., Ltd. in the field of health and pharmaceutical industry. Mainly engaged in the sales of the OTC market. The joint venture will primarily produce and operate vitamin and mineral products. Vitamins and minerals are the largest category in China's over-the-counter market, and Minsheng Pharmaceuticals has considerable strength in this area with its flagship brand, 21 Jinwei. Sanofi-Aventis is the fifth largest health pharmaceutical company in the world and continues to expand its global health pharmaceutical industry through mergers and acquisitions. The products of Minsheng Sanofi have been recognized and supported by many people. 1 System structure description The monitoring system adopts a layered distributed structure, namely station control layer, communication layer and interval layer; as shown in Figure (1): Figure (1) Network topology diagram of power monitoring system The interval device layer is mainly: multi-function network power meter, switch quantity, analog quantity acquisition module and intelligent circuit breaker. These devices are respectively installed in the electrical cabinet corresponding to the corresponding primary equipment. These devices all adopt RS485 communication interface, and realize on-site data collection through the on-site MODBUS bus networking communication. Cabinet number circuit name table address CT table model Figure (2) Power center low-voltage distribution secondary diagram Figure (3) Secondary diagram of low-voltage distribution of production plants and warehouses The remote signal and telemetry alarm function mainly completes the switch operation status and load line monitoring of the low-voltage outlet circuits. The switch position and load limit alarm pop-up alarm interface indicates the specific alarm position and audible alarm, reminding the on-duty personnel to deal with it in time. With historical query function, see Figure (4); load limit value can be set freely under the corresponding authority, between (5) Figure (4) Alarm information query Figure (5) Load alarm limit setting The parameter meter reading function mainly queries the electric parameters of the low-voltage outlet circuits. Supports electrical parameter query at any time, with functions such as data export and report printing. The report queries the electrical parameters of each low-voltage circuit of four transformer outlets in two power distribution rooms, including: three-phase voltage, three-phase current, active power, reactive power and power factor. The loop name of the report is associated with the database, which is convenient for the user to modify the loop name. As shown in Fig. 6 is the real-time data display of the 2-2LP1 incoming cabinet loop; the user can also query the historical telemetry electrical parameters of all loops at the same time, which is convenient for the management personnel to compare and analyze. As shown in Figure (7), the loop electrical parameter query report. Figure (6) Single loop parameter reading Figure (7) All loop parameters reading Power consumption report function, you can select the time period to query, support any time period electricity cumulative query [Figure (8)], with data export and report printing, etc., you can also query the report by default [Figure (9 ) shows an accurate and reliable energy report for the duty officer. The loop name of the report is associated with the database, which is convenient for the user to modify the loop name. The user can directly print the report and save it to other specified locations in EXCEL format. Figure (8) Custom Energy Report Figure (9) month query energy report The schematic diagram of the system communication structure mainly shows the networking structure of the system. The system adopts a layered distributed structure and monitors the communication status of the interval layer devices. Red indicates normal communication and green indicates communication failure. See Figure (10). Figure (10) Schematic diagram of communication structure For different levels of users, set different permission groups to prevent the loss of production and life caused by human error, and achieve safe and reliable operation of the power distribution system. Users can log in, log out, change passwords, add deletes, etc. through user management, which is convenient for users to modify accounts and permissions. See Figure (11). Figure (11) User login load trend curve interface can visually check the load operation of the loop. By clicking the coincidence curve button on the graph once, you can view the real-time and historical trend curves of the loop correspondingly. Click the corresponding button or menu item on the screen to complete the corresponding function switching; help the user to enter the line trend analysis and fault recall, with curve printing Features. Provides intuitive and convenient software support for analyzing the health of the entire system, see Figure (12). Figure (12) trend graph 4 Conclusion The supply of electricity plays a very important role in the normal production and work of the society. How can managers quickly and quickly find the faults and operation of the distribution circuit in the duty room? The application of the Acrel-2000 power monitoring system introduced in this paper in Hangzhou Sanofi Minsheng Health Medicine has solved this problem very well. The system can realize the real-time monitoring of the power supply of the low-voltage distribution circuit of the power distribution room, which can not only display The circuit power consumption status also has network communication and WEB publishing functions, and can form a power monitoring system with a serial port server and a computer. The system realizes the analysis and processing of the collected data, and displays the running status of each distribution circuit in the distribution room in real time. It has pop-up alarm dialog box and voice prompt for the closing and closing of the load, and generates various energy reports and analysis curves. Graphics, etc., facilitate remote meter reading and analysis and research of electrical energy. The system is safe, reliable and stable, and provides a reliable and reliable basis for power distribution users to solve power problems, and has achieved good social benefits. Professional 300 Ton Cement Silo manufacturer is located in China, including 300T Concrete Cement Silo,300T Cement Silos,300T Bolted Cement Silo, etc.This product [300t Cement Silos" is adopt split cement silo is connected to the cylinder wall by bolt sealing strips, and the top of the silo is equipped with a pressure safety valve to balance the pressure in the silo. Prevent explosions. 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Hangzhou Sanofi Minsheng Health Pharmaceutical Co., Ltd. has two power distribution rooms (power center power distribution room, production plant and warehouse power distribution room). The distance between the two power distribution rooms is about 70 meters. The duty room is placed next to the power center distribution room.
According to the requirements of power distribution system management, it is necessary to conduct power monitoring on all low-voltage distribution lines in two distribution rooms of Hangzhou Sanofi Minsheng Health Pharmaceutical Co., Ltd. The power monitoring platform is placed in the distribution duty room, through which the power distribution can be viewed. Real-time data on all loops in the room to ensure safe, reliable and efficient use of electricity.
The Acrel-2000 low-voltage intelligent power distribution system makes full use of the latest developments in modern electronic technology, computer technology, network technology and fieldbus technology, and performs distributed data collection and centralized monitoring and management of the variable power distribution system. The secondary equipment of the power distribution system is networked, and the field devices of the distributed power distribution stations are connected as an organic whole through the computer and the communication network to realize remote monitoring and centralized management of the power grid operation. 
The network communication layer is mainly: serial port server, its main function is to collect the scattered devices in the field, and remotely transmit to the station control layer to complete the data interaction between the field layer and the station control layer.
Station control management: equipped with high-performance industrial computers, monitors, UPS power supplies, printers, alarm buzzers and other equipment. The monitoring system is installed on the computer to collect and display the running status of the field device and display it to the user in the form of human-computer interaction.
The above network instruments all use RS485 interface and MODBUS-
RTU communication protocol, RS485 adopts shielded cable transmission, generally adopts two connections, the wiring is simple and convenient; the communication interface is half-duplex communication, that is, both sides of the communication can receive and transmit data but can only send or receive data at the same time. The maximum data transfer rate is 10Mbps.
The RS485 interface is a combination of balanced driver and differential receiver. It has enhanced noise immunity and allows up to 32 devices to be connected on the bus with a maximum transmission distance of 1.2km.
2 Main functions of power monitoring system 2.1 Data acquisition and processing Data acquisition is the basis of power distribution monitoring. Data acquisition is mainly completed by the underlying multi-function network instrument, realizing local real-time display of remote data. The signals that need to be collected include: three-phase voltage U, three-phase current I, frequency Hz, power P, power factor COSφ, electrical Epi, and remote device operating status.
The data processing mainly displays the electric parameters collected as required in real time to the user, and achieves the automation and intelligent requirements of the power distribution monitoring, and simultaneously stores the collected data into the database for the user to inquire.
2.2 Human-computer interaction system provides a simple, easy-to-use, and good user interface. Using the full Chinese interface, the CAD graphic shows the electrical main wiring diagram of the low-voltage power distribution system, showing the status of the power distribution system equipment and the corresponding real-time operating parameters, the screen timing wheel patrol switching; the screen real-time dynamic refresh; analog quantity display; switch quantity display; continuous Record display, etc.
2.3 The diachronic event duration event viewing interface is mainly for the user to view the fault records, signal records, operation records, and over-limit records that have been made to provide convenient and friendly human-computer interaction. Through the historical event viewing platform, you can customize according to your own requirements and query conditions. It is convenient to locate the historical events you want to view, and provide good software support for your operation of the entire system.
2.4 Database establishment and query mainly complete remote measurement and remote signal timing collection, and establish a database, and generate reports on a regular basis for users to query and print.
2.5 User Rights Management For different levels of users, set different permission groups to prevent the loss of production and life caused by human error, and realize the safe and reliable operation of the power distribution system. Users can log in, log out, change passwords, add deletes, etc. through user management, which is convenient for users to modify accounts and permissions.
2.6 Operation load curve The load trend curve function is mainly responsible for timing the incoming line and important loop current and power load parameters, and automatically generating the running load trend curve, which is convenient for users to know the running load status of the equipment in time. Click the corresponding button or menu item to complete the corresponding function switching; you can view the real-time trend curve or historical trend line; you can perform translation, zoom, range conversion and other operations on the selected curve to help users enter the line trend analysis and fault recall. Analysis of the health of the entire system provides intuitive and convenient software support.
2.7 Remote Report Query The main function of the report management program is to design the report style according to the needs of the user, and filter the data processed in the system to generate the report data required by the user. The program can also use the timed save, print or summon save and print mode for the report file according to the user's needs. At the same time, the program also provides users with the function of generating report file management.
The report has the function of freely setting the query time to realize the energy statistics, data export and report printing of day, month and year.
3 Case Analysis The monitoring system mainly realizes the distribution system monitoring of two distribution rooms (power center distribution room, production and warehouse distribution room) of Hangzhou Sanofi Minsheng Health Pharmaceutical Co., Ltd.
There are 2 incoming line cabinets, 1 female joint cabinet, 4 compensation cabinets and 24 ordinary feeder loops in the power center distribution room. There are 2 incoming line cabinets, 1 female joint cabinet and 4 sets in the production and warehouse distribution room. The compensation cabinet and the 43 ordinary feeder circuit, the entire monitoring range is 81 loops of electrical parameter monitoring. The specific circuit list is as follows: 
The Acrel-2000 power monitoring system is located in the duty room next to the power distribution room of the power center. There are 2 transformers in the power center power distribution room, and there are 31 sets of intelligent instruments. The two shielded twisted-pair bus connections are used on the site and pulled to the duty room. There are 2 transformers in the production plant and warehouse distribution room, a total of 50 smart meters; the site is connected to the duty room by two shielded twisted-pair bus connections; the distance between the production plant and the warehouse distribution room is about 100m away from the duty room. .
All meters installed in the power distribution room are multi-function network instruments, which measure all conventional power parameters, such as: three-phase voltage, current, active power, reactive power, power factor, frequency, active power, no Power and electricity.
The secondary diagram of the power distribution room is shown in Figure (2) (3). The function has electricity telemetry. It mainly monitors the electrical parameters of the operating equipment, including: line three-phase voltage, current, power, power factor, electric energy, frequency and other electrical parameters and The three-phase current of the circuit is output; the remote signal function realizes the operation status of the field device, which mainly includes: the switch's branching and closing operation status and communication fault alarm; when the circuit breaker is displaced, an alarm signal is issued to remind the user to handle the fault in time. 
