The core value of smart grid is to improve energy efficiency, reduce greenhouse gas emissions, and use various hi-tech means to enhance the operation and management level of all links such as generation, transmission, distribution and utilization, saving resources and protecting the environment.
In recent years, some developed countries, and actively advocated the development of smart grid, will promote it to the strategic environment and the sustainable development of the economy, the national energy level to fully implement, and trying to reach the recent economic stimulus effect through investment in the construction of smart grid. In the international financial crisis, Obama's economic stimulus plan included accelerating the development of the smart grid.
The core value of smart grid is to improve energy efficiency, reduce greenhouse gas emissions, and use various hi-tech means to enhance the operation and management level of all links such as generation, transmission, distribution and utilization, saving resources and protecting the environment. The promotion of smart grid can reduce more than 25% of the carbon dioxide generated by power generation, which is equivalent to the amount of carbon dioxide emissions at the start of 130 million cars. Smart grid can also improve the quality of power supply and service, and promote the development of the whole industrial chain.
In a word, smart grid brings the safety, reliability and stability of the existing power grid to a whole new height, and further reflects the positive contribution of the power grid to the environment, economy and the whole society.
Smart grid technology upgrading distribution network and power management level
Speaking of the intelligence of the distribution network, many people will think of the distribution automation. Distribution automation is of course an important part of the intelligent distribution network, but it only realizes some functions such as improving the reliability of power supply and shortening the time of power outage. The intelligent distribution network is an organic integration of multiple information and functional modules.
The so-called organic integration, that is, through the cross platform data / information management, to achieve more, more advanced applications. It is emphasized to enhance the network operation level, such as: how to fill the valley through the peak, through effective load transfer, based on the existing grid distribution more power, rather than simply increasing investment in infrastructure; how to reduce the loss by the whole network reactive power / voltage management; how to use real-time load forecasting and meteorological, distributed energy connect with tou, guide customers consumption, improve the average hours of existing generating units utilization, rather than simply adding new units to meet peak demand plan; how to improve the crisis management ability of power grid itself, which can quickly determine the fault warning, to restore self-healing function. Smart grid can also help improve the efficiency of production schedulers through advanced power grid rapid simulation, many visualization tools and intelligent expert systems.
Many power companies in the United States have installed smart electric energy meters and build advanced measurement systems as an important part of the construction of smart grid. As a real-time interactive tool of electricity customers and power companies, intelligent electric energy meter has two main functions: first, it is to realize the information and control the terminal demand response; second, it is a power outage management, quality management and other functional modules of the source of information, it will be the whole camp with the system of fault location and the electric energy into the power supply terminal monitoring. With integrated geographic information system and expert system, electric power enterprises can handle various events and situations more intuitively and quickly, and greatly improve operation efficiency.
The development of intelligent distribution network, there are several management systems play an important role.
The first is the power outage management system. At present, most of the electric power enterprises in China carry out the management of battalion and distribution separately, and there is almost no cross platform blackout management system. The customer service hotline can't immediately decide whether it is a system failure or a customer responsibility problem after receiving the repair call. It can only send maintenance personnel (usually outsourced social service personnel) on-site inspection. If it is the responsibility of the system, it is necessary to contact the scheduling, to send out the work list and to arrange the overhaul. The process is lengthy and inefficient. If the weather disasters cause blackouts, often make the staff constantly on the run.