The smart grid is a complete system, covering all aspects of power generation, transmission, distribution, dispatch, transformation, and electricity consumption. According to incomplete statistics, more than 80% of the electrical energy of the power system is transmitted to users through the user-side power distribution network and consumed on terminal electrical equipment. As a low-voltage electrical appliance that controls and protects terminal electrical equipment, it is at the bottom of the grid energy chain and is an important part of building a strong smart grid. Therefore, building a smart grid and building a user-side smart power distribution network will make networking, comprehensive intelligence, and communication possible the future development direction of low-voltage electrical appliances.

Unified platforms and standards are conducive to the development of smart low-voltage electrical appliances

Smart grid requires the use of unified and standardized products on the user side, which makes the measurement, protection, control and other functions of various automation systems, monitoring systems, management systems and online monitoring devices gradually in the new unified and standard technical support system Integration and integration, and ultimately achieve a high degree of integration of various technologies, so as to improve the reliability of the smart grid system, shorten the installation and maintenance time and provide guarantee. This also brings great convenience to the development and application of a new generation of intelligent low-voltage electrical appliances.

Traditional smart low-voltage electrical appliances are facing extension and expansion

The efficient use of renewable energy, the renewable energy power generation system developed by cutting peaks and valleys to improve power efficiency, and the fast charging devices of electric equipment such as electric vehicles, etc., need to develop specific functions and performance requirements for these systems Low-voltage electrical appliances.

On the other hand, the application of these devices (such as converter equipment, grid-connected equipment, intermittent energy access equipment, charging devices, etc.) will affect power quality. With harmonic suppression, reactive power compensation, transient overvoltage suppression and Renewable energy power generation system overvoltage suppression and protection have also put forward more and higher requirements for low-voltage electrical appliances. Traditional low-voltage electrical appliances will face extension and expansion, which is a new development opportunity for low-voltage electrical appliances.

Early warning and rapid recovery and self-healing become the development direction of low-voltage electrical appliances

Smart grid should have functions such as robustness, self-healing, interaction, and optimization. Low-voltage electrical appliances should adopt network information technology, modern communication technology and measurement technology to achieve system life management, fast fault location, two-way communication, power quality monitoring and other functions. At the same time, low-voltage electrical appliances will also use the signal acquisition system in the intelligent distribution network to realize digitization, which can not only ensure sufficient sampling rate and good accuracy, but also facilitate early assessment of events and early warning of failures through real-time data analysis. . In addition, the network monitor of low-voltage electrical appliances can quickly locate faults, isolate faults in the case of distribution network failures and automatically restore power supply in non-faulty areas, to achieve rapid and safe restoration and self-healing of the distribution network, thereby fully satisfying intelligent power distribution The protection and control requirements of the network. Therefore, with the construction of smart grids, the application of a new generation of smart low-voltage electrical appliances will become more and more widespread.

Supply and demand management mode promotes the development of low-voltage electrical appliances to network

The application of renewable energy power generation system broke the traditional energy production and consumption model, and formed a two-way interactive service system between producers and consumers. A variety of input data, including pricing signals, time-of-use billing, and grid load conditions, must pass through advanced management software, adopt flexible configuration methods according to user needs, promote users to participate in grid operation and management, and balance users' demand for electricity .

In addition, to meet the relationship between supply and demand, reduce or transfer peak power demand, reduce hot standby power stations, further improve the power grid energy-saving effect and improve the reliability of grid power supply, so as to maximize resource conservation and environmental protection. This requires not only the development of new operation and management models, but also the support of networked low-voltage electrical products and systems with two-way communication, two-way metering, and energy management. Therefore, these requirements will also promote the rapid development of low-voltage electrical appliances in the direction of networking.