Lu Xiaojun
Ankerui Electric Co., Ltd. Shanghai Jiading
Abstract: With the continuous deepening of enterprise reform, the modernization level of power management is getting higher and higher, and the energy data of each power consumption link can be obtained quickly and accurately. Power consumption analysis, load management, operation status monitoring, and electricity tariff Automatic settlement, a powerful means to improve the economic efficiency of enterprises. In order to improve the monitoring system, in recent years, the technical staff has gradually increased the research work on the monitoring system, and began to use the new technology to transform the existing monitoring system, which has greatly helped the construction of the current monitoring system. . This paper introduces the application of power management system in enterprise power management through the application of substation in Akzo Nobel Taikoo Paint (Shanghai) Co., Ltd. project.
Keywords: power management system; monitoring system; centralized meter reading system; power management system;
0 Introduction
Distribution automation is a comprehensive information management system integrating computer technology, data transmission technology, control technology, modern equipment and management. Its purpose is to improve power supply reliability, improve power quality, provide quality services to users, reduce operating costs, and reduce the labor intensity of operators.
The enterprise power management system is a product of responding to the national energy conservation and fine energy management call, aiming at improving the terminal power efficiency and changing the power consumption mode. While meeting the same power consumption function, the power consumption and equipment danger warning and reduction are realized. Electricity consumption and power demand, to achieve safe use of electricity, save resources and protect the environment, to achieve the "safe use of electricity, economic electricity, orderly electricity, smart electricity" power targets. This paper introduces the application of power management system in enterprises through the construction of the energy management system of Akzo Nobel Taikoo Paint (Shanghai) Co., Ltd. project.
1 project overview and construction goals
Akzo Nobel Taikoo Paint (Shanghai) Co., Ltd. was registered in Shanghai Industrial and Commercial Bureau on December 20, 1995. The legal representative Han Hua, the company's business scope includes production and research and development of water-based coating products (excluding hazardous chemicals). Akzo Nobel Taikoo Paint (Shanghai) Co., Ltd. has upgraded the low-voltage power distribution in response to the national energy-saving and emission reduction policy. In order to ensure the reliability of the facility for power distribution, the power management system is configured to monitor and save data in real time for later management.
2 power management system design
In the design of the monitoring system, it is necessary to fully consider the actual needs of the customer, as well as the actual structure of the power system, the actual load capacity of the power system, etc., and then rationally select the monitoring equipment, which is beneficial to reduce the cost of the system operation, and also Conducive to the realization of system functions.
The power management system of the project can realize real-time monitoring of the high and power distribution circuits in the station, which is beneficial to power management. On the other hand, the power management system can not only accurately indicate the power consumption status of the circuit, but also has the functions of network communication, etc., and can be combined with computers, serial servers and other devices to display the operation status of each power distribution circuit in the station in time. When the load of the power system in the station exceeds the standard, the power monitoring system can quickly alarm and issue a voice prompt. In addition, the power management system can also generate statistical information such as reports and graphs, so that the relevant personnel can analyze the power consumption status of various parts in the station, so that the power usage activities in the station are safer, thus ensuring the life safety of the station personnel and improving the station staff. Work efficiency.
2.1 System Structure
According to the distribution of distribution of Akzo Nobel Taikoo Paint (Shanghai) Co., Ltd., the online monitoring system construction adopts a layered and distributed structure. The system includes: station control management layer, network communication layer and field equipment layer. The system network structure is as shown:
2.3.4 User Rights Management
Power Management System For the safe and stable operation of the project system, user rights management can prevent unauthorized operations (such as power distribution loop name modification). You can define login names, passwords, and operation rights for users of different levels, and provide reliable security for system operation and maintenance management.
3 Significance of applying power monitoring system in power supply and distribution design
In summary, in response to the above problems, and according to customer requirements, the original power distribution system is transformed, and the modified power management system can not only realize remote monitoring and centralized management of each power distribution circuit, but also realize The monitoring equipment performs classification energy statistics. Through the setting of the power management system, the staff can make correct judgments and input operations in a short time. With a comprehensive understanding of the state of the grid, staff can handle faults in a timely and accurate manner. Timely staff members are not on site, and can be sent to duty personnel in a timely manner to obtain timely information. According to the actual use of the equipment reflected by the system, it is convenient for the staff to arrange the relevant maintenance work reasonably.
references
[1] "Guidelines and Application Guidelines for Digital Measurement of Electric Power Measurement", Ren Zhicheng, Zhou Zhong, China Electric Power Press
[2] "Application of Power Monitoring System in Power Supply and Distribution Design", Gao Shihong, Technology Wind
Push Button Switches
The Push Button Switches, also known as the control button (referred to as the button), is a low-voltage electrical appliance that is manually and generally can be automatically reset. The Push Button Starter Switch is usually used to issue a start or stop command in the circuit to control the turning on and off of electrical coil currents such as electromagnetic starters, connectors, and relays.
The On Off Push Button Switches refers to a switch that pushes the transmission mechanism with a button to make the movable contact and the static contact open or close and realize circuit switching. It is a master control device with a simple structure and a wide range of applications. In the electrical automatic control circuit, used to manually send control signals to control connectors, relays, electromagnetic starters, etc.
This Pushbutton Switches is a kind of electric device that is used to switch on and off the small current circuit when the action is released. Generally used in AC and DC voltage below 440V, the current is less than 5A in the control circuit, generally do not directly manipulate the main circuit can also be used in the interconnection circuit. In actual use, in order to prevent desperation, different marks are usually made on the buttons or painted with different colors, and the colors are red, yellow, blue, white, black, green, and the like.
The Momentary Push Button Switch could be divided into metal push button switches and LED Light Switches and ordinary snap button type, mushroom head type, self-locking type, self-resetting type, rotary handle type, with indicator light type, lighted symbol type and key type, etc., with single button and double Buttons. Generally, it adopts a water-storage structure, which consists of a button cap, a return spring, a static contact, a moving contact and a casing. It is usually made into a composite type, and has a pair of normally closed contacts and normally open contacts, and some products can pass. The series connection of multiple elements increases the number of contact pairs. There is also a self-contained button that automatically holds the closed position when pressed, and can be turned on only after the power is turned off.
When the Metal Switches is not pressed, the movable contact is connected with the upper stationary contact. The pair of contacts is called a normally closed contact. At this point, the movable contact is disconnected from the following static contact. The pair of contacts is called a normally open contact: the button is pressed, the normally closed contact is open, the normally open contact is closed, and the button is released. Restore the original working state under the action of the return spring
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