An Kerui Cui Tingyu
Jiangsu Ankerui Electric Appliance Manufacturing Co., Ltd.
Abstract: Based on the rapid development of science and technology, people rely more and more on power resources. At this stage, the operating costs of domestic power systems are still relatively high. Therefore, it is imperative to improve the work of all aspects of the power system. The power monitoring system plays an important role in the entire power system. It can effectively promote the efficiency of power grid management and reduce the operating costs of the power system. This paper uses the power of substations in the project of Heilongjiang Jumbo Island Pharmaceutical (Hulin) project. Application The application of power monitoring system in the factory field.
Keywords: power system; pharmaceutical industry; monitoring system
0 Preface
Distribution automation is an integrated information management system integrating computer technology, data transmission technology, control technology, modern equipment and management. Its purpose is to improve the reliability of power supply, improve the quality of power, provide users with quality services, reduce operating costs, and reduce the labor intensity of operating personnel.
With the continuous development of the electric power network and the continuous increase in the power load, various new types of loads have emerged. Users are paying more attention to the issue of power quality. At the same time, they also put forward more stringent requirements for power quality. Users need more effective power monitoring and management solutions to meet the challenges brought about by these changes, in order to achieve a continuous, reliable, efficient and low-cost operation of the power distribution system. This article describes the application of the power monitoring system in a pharmaceutical factory through the construction of the power monitoring system for the project of Heilongjiang Jumbo Island Pharmaceutical (Hulin).
1 Project Overview
Heilongjiang Jinbaodao Pharmaceutical Co., Ltd. is a large-scale SSE listed company (stock code: 603567) that is committed to providing quality products and services for human health. The company adheres to the concept of development with new industries, new transformations, and new models. Since its establishment in 1996, after more than 20 years of scientific development, it has now formed a series of high-end Chinese medicine preparations featuring production, R&D, and sales. It focuses on the treatment of disease-prone domestic and foreign advanced new varieties. It focuses on technological innovation and open sharing. , Green development as a fundamental, with capital operations as a link, with the Internet platform, financial platform, logistics and warehousing platform as the support, large-scale, industrialization, modernization, and internationalization of the entire industrial chain and health industry cluster enterprises and medical service platform. While continuing to provide strong support and driving role for regional economic development, it will effectively promote the upgrading, transformation and development of China's traditional pharmaceutical industry.
As a pioneer in actively expanding the development model for new health industries, JTB Island Pharmaceutical Co., Ltd. always adheres to the cultural concept of “pragmatic innovation, excellence, and building a harmonious Treasure Islandâ€, and will provide the public with more systematic and high-quality health services as a corporate development goal. , is committed to building China's new health industry leader. Let scientific and technological achievements benefit the society more, make greater efforts and contributions for human health, and create a world-class brand!
2 Design of power monitoring system
In the design of the monitoring system, we must fully consider the actual needs of customers, as well as the actual structure of the power system, the actual load capacity of the power system, and other factors, and then choose a reasonable monitoring equipment, which is not only conducive to reducing the cost of system operation, but also It is conducive to the realization of system functions. The power monitoring system of this project can realize the real-time monitoring of the high-level and distribution circuit in the plant and is conducive to the management of power. On the other hand, the power monitoring system can not only accurately show the power status of the loop, but also has network communication and other functions. It can be combined with computers, serial servers and other devices to display the status of each distribution circuit in the factory. When the load of the power system in the factory exceeds the standard, the power monitoring system can quickly report an alarm and issue a voice prompt. In addition, the power monitoring system can also generate statistical information such as reports and graphs, which facilitates the analysis of power consumption in various parts of the plant and makes the power activities in the plant more secure, thus ensuring the safety of people in the plant and improving the station. Staff work efficiency. 2.1 System Structure Based on the distribution of the distribution situation of Heilongjiang Jumbo Island Pharmaceutical (Hulin) project, the online monitoring system construction adopts a hierarchical distributed structure. The system includes: station management layer, network communication layer, and field device layer. The network structure of the system is shown in the figure:
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The direct window of human-computer interaction between the management and management personnel of the management team and the computer calculates, analyzes, and processes various types of data collected on the site, and reflects the operating status of the site in terms of graphics, digital display, sound, etc. The upper part. Mainly by the system software and necessary hardware equipment, such as industrial-grade computers, printers, UPS power supply and other components.
The device used by the communication layer is the N2S16-485I-ETS serial server. This layer is a bridge for data information exchange. It is responsible for the collection, classification, and transmission of data information sent back by field devices, and it also conveys various control commands from the upper computer to the field devices.
The field device layer is mainly connected to various types of instruments used for the collection and measurement of electrical parameters in the network, and it is also a necessary basic element for constructing the distribution system. The on-site electric energy meter is configured to realize the monitoring of electric parameters such as three-phase current, three-phase voltage, frequency, power, and four-quadrant electric energy of the low-voltage loop; and the status of each breaker circuit breaker is monitored.
2.2 Network Design The network system in the power monitoring system can transmit data in time and transfer operating instructions quickly, which is the basis for realizing various functions of the power monitoring system. Connect each device on-site with the bus in the field, and then connect all the buses to the communication gateway to realize the transfer with the host.
2.3 monitoring system software function design
The system is designed according to the customer's actual needs and realizes a main wiring diagram interface display; electric parameter remote measurement and electric parameter crossing limit alarm; event recording; system operation abnormality monitoring; fault alarm and operation record; report query and printing; system load real-time , history curve, user rights management and other main functions.
2.3.1 Data Acquisition and Processing
Data acquisition mainly includes analog and digital acquisition. The acquisition of analog quantity mainly collects the information of line voltage, current, power, power factor, frequency, etc. The collection of switch quantity is mainly the working status of the circuit breaker, isolation switch, grounding switch and other equipment, and the power-off protection. Alarms such as operational faults are collected to achieve local real-time display of remote data. The data processing mainly displays the electrical parameters collected according to requirements in real time and accurately to the user, so as to meet the requirements of automation and intelligence of the power distribution monitoring, and store the collected data in the database for user query.
2.3.2 Data Record
The data recording function of the power monitoring system is mainly to record the sequence of the circuit-breaker-disconnected state and the protection operation. It requires that there must be enough memory space in the system, and then a long time and a large amount of data information is recorded and stored. Secondly, the data recording function of the power monitoring system also includes the recording of fault information, that is, recording and storing data such as real-time current and real-time voltage when the fault occurs. It can be seen that the data recording function can accurately reflect the problems existing in the system through the recording of the working status of the protection device and the recording of the fault information, thereby facilitating the solution of the staff.
2.3.3 Power Management
In order to realize the supervision of the power consumption of each circuit in the factory, the system designs a power management report. The system automatically generates daily reports, monthly reports, and annual reports and reports printing functions according to the different names of the circuits by collecting the active power. , and can query the power consumption of a certain period of a certain loop, can help the property to establish an effective energy management assessment system. Through the construction of the system and the establishment of the system, the energy-saving awareness of all registered management personnel has been greatly improved, and energy consumption has been effectively saved.
3, the significance of application of power monitoring system in power supply and distribution design
In summary, the power monitoring system helps power users to improve efficiency, reduce losses, and reduce operating costs.
The control system can effectively ensure the efficiency of power grid management and reduce the cost of power operation. It also becomes an indispensable part of power supply and distribution design. The power monitoring system's functions such as communication, fault alarm, and data storage and recording make the staff more convenient in practical work. Through the man-machine interface, the operating status of the power system can be directly understood and the operating instructions can be quickly transmitted. The transmission of data by devices is achieved through network transmission. Therefore, different power monitoring systems can be designed with different networking methods to ensure that data information can be transmitted quickly and accurately. On the other hand, in the power supply and distribution design using the power monitoring system, monitoring equipment should be selected according to the actual situation. General power monitoring systems usually use devices with long-distance communications, remote observation, and remote control, while some high-end power monitoring systems require smart devices with more complete functions. The installation of power monitoring systems in industrial factories and other places can realize the real-time monitoring of the low-voltage power distribution circuits in the plant and facilitate the management of power. On the other hand, the power monitoring system can not only accurately show the power status of the loop, but also has network communication and other functions. It can be combined with computers, serial servers and other devices to display the status of each distribution circuit in the factory. When the load of the power system in the factory exceeds the standard, the power monitoring system can quickly report an alarm and issue a voice prompt. In addition, the power monitoring system can also generate statistical information such as reports and graphs, which facilitates the analysis of power consumption in various parts of the plant and makes the power activities in the plant more secure, thus ensuring the safety of life of the people in the factory and improving work. Personnel work efficiency.
references
[1] "Principles and Application Guide for Power Electronic Measurement Digital Meters", Ren Chengcheng, Zhou Zhong, China Electric Power Press
[2] "Application of Power Monitoring System in Power Supply and Distribution Design", Gao Shihong, Science and Technology
About the author: Cui Tingyu, male, undergraduate, Jiangsu Ankerui Electric Manufacturing Co., Ltd., the main research direction for intelligent building power supply and distribution monitoring system. Email:el.cn QQ Mobile Phone Fax Website: http://
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