The huge market demand has also brought fierce competition from domestic and foreign manufacturers, and only the domestic high and low voltage complete sets of electrical equipment production plants have reached thousands. Market demand has promoted the progress and development of technology, and with the progress of society and the development of economy and science and technology, higher and newer requirements have been put forward for the power system. In particular, higher requirements are put forward for the safety, reliability, and automation of high and low voltage complete sets of electrical equipment, the main equipment that controls the power system.

Since the reform and opening up, China's electrical industry has entered a new period of historical development in the context of the rapid development of the national economy, through the "introduction, digestion and innovation" of the management experience and technology of foreign developed countries.

China's power equipment and power production industry are developing rapidly. The annual growth rate of new power generation capacity is more than 8%, and the installed capacity is expected to reach 800 million kW by 2020. However, according to the per capita share of electricity, China is far behind the developed countries. Due to the large space for the development of related industries, there is a huge market demand for high-voltage and low-voltage complete sets of electrical equipment.

High and low voltage electrical technology has made great progress in product design, manufacturing process, and operation management, and production process.

In terms of high-voltage electrical appliances, SF6 technology, vacuum technology, and combination technology have been applied to the product structure, and "oil-free" has been basically realized. In the process, the introduction of shell production lines, vacuum epoxy casting and injection molding equipment, machining centers, welding robots, CNC and plastic coating equipment for cabinet processing has appeared. At present, the domestic equipment with voltage level of 500kV and below has been able to meet the domestic needs, and its technical parameters have approached or reached the foreign level.

The low-voltage electrical industry is ahead of the high-voltage industry in the application of computer technology and product structure. Realize product intelligence and networking, and have intelligent low-voltage circuit breakers, motor controllers, overload relays, switchgear and other products come out. In addition, domestic low-voltage electrical appliances have made gratifying achievements in reliability research, non-contact switching, vacuum technology, current limiting technology, zero arcing, high performance and miniaturization, combination, modularization, modularization, etc.

China's high-voltage switchgear has developed to metal-enclosed type (including armored, spaced and box-type), and low-voltage is dominated by enclosed extraction unit. A variety of high-voltage handcart type, mid-type, ring main unit, F-C cabinet, box transformer, low-voltage drawer cabinet, motor control center and other products have been listed in large quantities.

Many enterprises in China's electrical industry have begun to adopt CAD, CAPP, CAM, CAE, MIS and other technologies, and some key and backbone enterprises have CIMS technology. It is worth mentioning that until the end of the 20th century, whether at home or abroad, the entire electrical science theory has not yet reached the point of maturity and perfection, especially the arc process and the establishment of mathematical models and other topics, which still need to be further studied.

In addition to some sporadic experience in heating, electrodynamics, electrical contact, electromagnetic characteristics, etc., the design of electrical products is just a method of analogy optimization and experimentation.