"Intelligent Motor Protection Controller Lifecycle Service" in Electrical Transformation of Thermal Power Plant

During the period from 2005 to 2008, the state invested heavily in the construction of thermal power plants. It has been more than ten years now. Although the overall operation is relatively stable and reliable, which guarantees the industrial and civil electricity needs of the country's economic development, some of the systems and equipment also expose practical problems that need to be solved urgently, such as inherent technical defects, equipment life expiration, and full life cycle operations. Problems such as high cost, low maintenance and overhaul efficiency, and substandard operating energy consumption ratio are mainly reflected in the following aspects.

Most of the large number of electronic protection measurement and control equipment (IED) running in the auxiliary power system have reached the critical service life (5-8 years) and the replacement stage. In addition, it is difficult to maintain the equipment at ordinary times, the aging degree of the equipment is serious, the operation reliability is deteriorated, and it is easy to produce misoperation, which has an increasingly serious impact on the stable operation of the electrical system and needs to be replaced urgently;

With the continuous improvement of the automation degree of all kinds of production and auxiliary systems in power plants, the electromagnetic radiation and interference effects generated by the power and electronic equipment are becoming more and more serious. However, enterprises often do not pay enough attention to this aspect and underestimate the influence of electromagnetic environment deterioration. Many IED devices that have been put into operation have very fragile anti-electromagnetic interference capabilities, there are many operational reliability problems (such as the misoperation of the protection device caused by the radio wave of the walkie-talkie, etc.), so it is urgent to improve the electromagnetic compatibility of IED equipment;

The functions of equipment diagnosis, maintenance management and application analysis required by the original ECMS system during planning are limited by the integration manufacturers' limited understanding of electrical equipment and always stay in the conceptual stage. The massive data accumulated in long-term operation cannot be effectively utilized, which is difficult to provide more valuable reference information for electrical equipment management and analysis decision-making of power generation enterprises, and the level of electrical management is slowly improving.

, with the rapid development of electronic technology and the rapid development of the Internet in the past decade, Suzhou Wanlong has launched the ST570 series of motor protection controller products on the basis of 30 years of deep cultivation in the electrical industry, combined with the current demand for products in power plants and the development of the Internet. This series of motor protection controllers not only upgrade the software and hardware of the traditional motor protector to further improve the reliability, but also carry out more humanized upgrade development in combination with the whole process of power plant user debugging, use and maintenance, transformation and upgrading, thus ensuring the service of the whole life cycle of the motor. The differentiation characteristics of the products are mainly concentrated in the following aspects:

device parameter setting is more efficient

Traditional motor protection controllers mostly use buttons to set protection parameters, and it takes about ten minutes to set the protection value of each motor protector. ST570 series motor protector series products download APP through smart phones and turn on the WIFI function of a single device. The parameter setting and data saving of the motive protection controller can be completed on the smart phone, and the parameter setting of the motive protection controller can be completed quickly only by importing data for the motive protection controller of the same model. Greatly improve the efficiency of equipment parameter setting. After the parameters are set, the set parameters can also be self-checked.

man-machine interface more friendly

Traditional old-fashioned motor protectors, mostly using LCD split screen display. Motor parameters view by turning the button up and down. ST570 series motor protector adopts TFT true color wide display instead of traditional liquid crystal, one screen displays current and voltage parameters, and is equipped with dynamic one-time schematic diagram. Make the user know the motor running state and related parameters at a glance, as shown in the figure below.