Pay Attention to Distributed Clean Energy Online Security

In recent years, with the continuous maturation of photovoltaic and wind power technologies in China and the decrease in manufacturing costs, coupled with the support of related national clean energy preferential policies, the enthusiasm for the development and use of clean energy in various regions has been very high. In addition to the construction of large-scale wind and electric fields, the development and utilization of distributed small- and medium-sized wind power generation have not been supported by national preferential policies, but they are also being taken seriously by some knowledgeable enterprises and individuals in the society. Seen in various media.

Compared with large-scale wind and electric fields, distributed clean energy has less investment and shorter construction time. Although the amount of power generation is not large, the development prospects of small and large savings cannot be underestimated, especially the power generated by it can be absorbed locally. The most important feature is that there is no need to build dedicated transmission lines and configure the corresponding substation facilities. Most of the development and use of distributed clean energy in foreign countries have national policy subsidies and high-price Internet access.

As early as in 2009, the State Grid Corporation of China developed relevant Internet technical standards and management standards in accordance with the requirements for clean development and access to the Internet in China. Among them, the medium and small-sized distributed landscape energy sources below 3,000 kW meet the requirements of the Internet technical standards. With the consent of the local government and the competent power supply company, the power dispatching and marketing management department of the municipality is put on record; the grid-connected safety technology requires a time-delayed connection and the power grid is automatically disconnected.

If we say that the development of large-scale wind and electric fields throughout the past few years is a new investment boom under the leadership of national policy, mainly to make up for the power supply of the power grid; then, the distribution of small and medium-sized wind power generation that has emerged in recent years is In the country has not yet introduced the relevant preferential policies, a conscious behavior of social legal persons and individuals. Undoubtedly, this will be another major development trend for the development and utilization of clean energy in the future.

The grid-connected large-scale wind farms of distributed clean energy are connected to the grid based on the “local consumption” principle, which allows them to access the local low-voltage network and cannot be equated with large-scale wind and electric fields in grid-connected security technology protection. Although the existing distributed wind and solar power generation equipment is equipped with online security control equipment, how to ensure that the “anti-rollback” jeopardizes the operation of the power grid and the safety of management, it still has to arouse the attention of power supply companies everywhere.

The author proposes that in addition to the technically reliable and stable equipment for the protection of distributed clean energy, the Internet must establish a correspondingly strict management system, with the exception of the power dispatching and marketing department that has a record for distributed clean Internet access, and direct management. The power supply stations also need to be filed, and there is a corresponding routine inspection system to regularly check the distributed clean energy sites for safe internet access. Because the distributed generation of clean energy for wind power is different from that of the self-provided generators of the past enterprises or individuals. It is not the power generation of the power grid, but an on-grid power generation. Therefore, it is very important to attach importance to distributed clean energy security.