1. design principles
In the energy-saving design of electrical engineering automation, the design principle is the first problem to be clear. Only on the premise of adhering to the appropriate principles, can the scientific and effective energy-saving design be promoted. Specifically speaking, the principles of energy-saving design mainly have four points: first, safety, in the process of energy-saving design, can not put all attention on energy-saving, but also need to pay attention to the safety of electrical equipment operation, in order to ensure the safety of electrical engineering on the basis of energy-saving; second, advanced, in the community In the process of development, a variety of new energy-saving technologies and energy-saving equipment emerge in endlessly. In the process of electrical engineering automation design, attention should be paid to the introduction of advanced technology and equipment, so as to effectively improve the energy-saving effect; third, environmental protection, some electrical equipment in the course of operation will also produce on the surrounding environment. Certain influence, when carrying on the energy-saving design, also want to fully consider this point, as far as possible reduces the surrounding environment damage; Fourth, renewal, electrical equipment in operation for a period of time, will gradually aging, which requires staff timely replacement of equipment, in order to ensure the normal operation of electrical engineering, in the When replacing, if energy-saving can be achieved after maintenance, and with better operational efficiency, then the equipment can continue to use, otherwise it needs to be updated.
2. transformer selection
In transformers, the more important components include insulators, steel, silicon steel sheets, etc. For these components, when any part of the fault, the performance of the transformer will be affected, thereby increasing energy consumption, therefore, in energy-saving design, the choice of transformer is very important, especially The choice of the main components should be very prudent under the guidance of the concept of energy conservation. When choosing the line and cabinet, generally choose copper material; when choosing silicon steel sheet, on the basis of ensuring the normal operation of the equipment, choose the thinnest. In addition, it is also necessary to pay attention to the load rate of the transformer, generally speaking, the load rate between 40% and 60% is the best.
3. power transmission loss reduction
Wire has a certain resistance, affected by this, electric energy transmission process, will produce a certain loss, in the energy-saving design, in order to reduce the loss, it is necessary to reduce the resistance as far as possible, because the strength of the current can not be changed. Generally speaking, the larger the cross-section of a wire, the smaller the resistance, and the shorter the length of the wire, the smaller the resistance. Based on this, the resistance reduction design can be carried out from the following aspects: first, select a cable with high transmission current capacity; second, wire in a straight line manner. The length of the transformer is shortened; third, the location of the transformer is reasonably selected; fourth, the wire with larger cross-section is selected.
4. reactive power compensation design
In the process of electric automation system operation, some useless power will be produced, which will have a certain impact on the potential difference of the system, and will also lead to the quality of power decline. Therefore, in the energy-saving design, reactive power compensation design is also needed. The main aspect of the design is the selection of reactive power compensation methods, through the reasonable choice of compensation methods, improve the operation efficiency of electrical engineering automation system, while ensuring the normal operation of the system.
5. selection of power cables
Power cable is an important part of electrical engineering automation system. When choosing power cable, we should fully consider the normal operation of transmission lines in order to ensure the rationality of selection. At present, the more common power cable materials are aluminum and copper materials, aluminum material prices are relatively low, but its energy-saving effect is poor, and the price of copper material is much more expensive than aluminum material, but in terms of energy-saving effect is better, and has a higher economy. In actual power cable selection, material selection is also necessary in combination with the actual system.
About Xinhua Control in Shenyang:
As an excellent service provider of automatic control system, Shenyang Xinhua Control System Co., Ltd. has devoted itself to the R&D and design of automation systems in different industries for many years. It has always provided the best quality automation products and automation control system solutions for customers in the industry. It has already provided petroleum, chemical industry, electric power, alcohol, textile and so on. Many enterprise users have successfully implemented the automatic control system engineering service. At the same time, Xinhua Control Company specializes in the design and production of a variety of complete sets of equipment, including PLC control cabinet, low-voltage switchgear, frequency conversion control cabinet, console, control box and other equipment, and according to customer requirements for non-standard design and processing.
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