What role does smart grid play in power network information communication?
Smart grids are self-healing grids. In essence, self-healing is the “immune system” of smart grids. Self-healing grids conduct continuous online self-assessments to predict possible problems in the grid, detect existing or developing problems, and take immediate measures to control or correct them. To ensure the reliability, safety, power quality and efficiency of the grid.
Smart grids motivate and include users. From the perspective of smart grids, user demand is another manageable resource that will help balance supply and demand and ensure system reliability; from the perspective of users, electricity consumption is an economic choice, and by participating in the operation and management of the grid, they can correct the way they use and purchase electricity, thereby obtaining tangible benefits.
Smart grids will resist attacks. Smart grid security strategies will include deterrence, prevention, detection, and response to minimize and mitigate the impact on the grid and economic development.
Smart grids provide power quality that meets the needs of users in the 21st century. Power quality indicators include voltage offset, frequency offset, three-phase imbalance, harmonics, flicker, voltage sags and swells, etc.
Smart grids will mitigate power quality events from transmission and distribution systems. Through its advanced control methods, it monitors the basic components of the power grid, thereby quickly diagnosing and accurately proposing solutions to any power quality events. In addition, the design of the smart grid must also consider reducing power quality disturbances caused by lightning, switch inrush, line faults and harmonic sources, while applying the latest research results of superconductivity, materials, energy storage and power technology to improve power quality to solve power quality problems.
Smart grids will allow access to various types of power generation and storage systems. Smart grids will enable the power market to flourish. Through the interaction of supply and demand in the market, smart grids can most effectively manage parameters such as energy, capacity, capacity change rate, and flow congestion, reduce flow congestion, expand the market, and bring together more buyers and sellers.
Power network communication is the key to supporting the development of smart grids. The premise of building smart grids is the need to build power communication. Similarly, the development of the power industry is inseparable from the effective operation of power communication.
1. Effectively combine with smart fiber optic networks
Generally speaking, synchronous digital hierarchy (SDH) is used as the optical fiber network structure in the smart grid system to solve the network requirements for data communication during the operation of the power grid. Nowadays, with the innovative development of the power system, the operation volume of IP data transmission has also increased year by year. In response to this phenomenon, people’s conditions for power information communication are also changing, and their requirements for it are getting higher and higher. Therefore, the power system bureau is also innovating, taking IP technology as the basis of the network, and combining it with optical fiber technology to realize the development of smart grid communication.
2. Realizing the communication between smart grid and electricity users
The power system access network has completed the desire to connect the power communication network with electricity users. Generally speaking, when using the smart grid system, the users of the smart grid can obtain the color of the end of the grid through the grid to achieve the diverse choices of power users. On this basis, the smart grid also provides a variety of feasible measures for electricity users. There are also some situations that can meet the smooth operation of the communication between the smart grid and electricity users:
(1) 3G networks and wireless networks are booming, and users like them more, so they can create high-speed data lines by leasing to network operators;
(2) The power system can build a dedicated network and data network channel for power communication;
(3) Programmable logic controllers (PLC technology) can be used as access points for the power communication network to meet the requirements of power users and the development of smart grids. When using these three methods, building a dedicated data channel is a fixed mode of intelligent network transmission and cannot be covered by other methods.
