Power Plant Energy Saving and Environmental Protection and Upgrading Solutions

1. Power plant operation and maintenance management status
In recent years, energy conservation, environmental protection and efficiency have become the direction of structural adjustment of China's power industry and the key to the sustainable development of the power generation industry. Under the policy guidance of "big and small", the power generation industry has actively promoted the optimization and upgrading of the industrial structure, and has closed a large number of small thermal power units with low energy efficiency and heavy pollution, which has greatly accelerated the upgrading of traditional application schemes and electrical equipment. However, the newly built thermal power units during the rapid development of the power generation industry in the first decade of this century have been in operation for at least 5-10 years. 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, problems such as defects in inherent technical solutions, expiration of equipment life, high operating costs throughout the life cycle, low maintenance and overhaul efficiency, and substandard operating energy consumption ratios are mainly reflected in:
Due to the limitation of specifications, technical requirements, design experience, equipment level and management ability in the design and construction of some early power plants, the auxiliary power system (especially the low-voltage auxiliary power system) has hidden dangers of improper technical scheme and equipment selection, and even the old-fashioned protection relay products are in operation in large quantities, which needs to eliminate and correct the original scheme and replace the unqualified equipment;
Most of the large number of electronic devices (IEDs) running in the auxiliary power system have reached the critical service life (8-10 years) and the replacement stage. In addition, it is difficult to maintain and maintain the equipment at ordinary times, the aging degree of the equipment is serious, the operation reliability is deteriorated, and the malfunction is easy to occur, which has an increasingly serious impact on the stable operation of the electrical system and needs to be replaced urgently;
A large number of primary switch electrical appliances and complete sets of equipment in the auxiliary power system, although most of the electronic components have been exhausted, the electrical equipment itself still has enough residual mechanical life and electrical life. Due to the lack of necessary transformation methods and utilization methods, it is facing the embarrassing situation of complete machine replacement, and the high purchase price of new machines brings heavy burden to the operation of power generation enterprises, how to play and reuse its surplus value is the best choice to improve the economic efficiency of enterprises;
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 pay insufficient 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, application analysis and other functions required by the original ECMS system in planning are limited by the depth of understanding of electrical equipment by integration manufacturers, and always stay in the conceptual stage. The massive data accumulated in long-term operation cannot be effectively used, which is difficult to provide more valuable reference information for the management and analysis of electrical equipment in power generation enterprises, and the improvement of enterprise management level is slow; with the continuous deepening of the market-oriented mechanism reform of enterprises, the pressure of national energy conservation and emission reduction targets undertaken by power generation enterprises is increasing. The original equipment technology level and operation and maintenance costs obviously cannot meet the current requirements of full marketization and energy conservation and environmental protection. A large number of spare parts inventory, 24-hour ventilation and lighting in closed workshops, high-energy-consuming electrical equipment and inefficient management and operation methods are occupying a large amount of resources of enterprises, directly affect the operational and social benefits of enterprises;
Some power plants try to change and transform the auxiliary power system equipment through cooperation with equipment suppliers. However, due to the high requirements of technical integration and comprehensive solution ability, wide product coverage, complex interface work and difficult on-site construction service involved in the transformation, it is difficult to have suitable equipment suppliers who can not only provide tailor-made alternative products and implementation plans, but also have the technical service ability required by the transformation, the power generation enterprise's rock far lazy 3 mechanical O colonization "Na Li steep brain Chan Ao.
Based on the above situation, power generation enterprises urgently need equipment supply service providers to provide them with targeted and cost-effective products and service solutions, to solve the practical problems of most power plants in a large-scale package, and to meet the evolving market requirements.
For this reason, Wanlong Electric, aiming at the development demand of "energy saving and consumption reduction, green environmental protection, safety and reliability, high quality and high efficiency" being implemented by thermal power plants, summarizes the technical accumulation and engineering service experience in serving power generation enterprises in the past 20 years, and fully combines the basic status quo and transformation and upgrading needs of users, and develops a series of energy saving, environmental protection and upgrading solutions tailored for old power plants (new power plants can also be used for reference), suitable for all kinds of coal-fired power plants, gas-fired power plants, thermal power plants, enterprise-owned power plants, straw power plants, garbage power plants, etc. The scheme covers the upgrading of high-voltage and low-voltage system equipment and the transformation of resource reuse, the integration of low-voltage motor applications and industrial control integrated products, the energy-saving and environmental protection transformation of the plant power system, the bus solution of the coal transmission program control system, the automation of electrical equipment maintenance and testing, and various engineering maintenance services provided for this purpose.

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