Commercial and Industrial Energy Storage Electricity Ancillary Services
Commercial and Industrial Energy Storage Electricity Ancillary Services
Under the policy of widening the peak-valley price difference and increasing peak tariffs in various regions around the world, the economics of installing energy storage for industrial and commercial users has been significantly enhanced. In the future, with the accelerated construction of a unified power market, the mature application of virtual power plant technology, power spot trading and power auxiliary services will also become a profitable channel for commercial and industrial energy storage. With the reduction in the cost of energy storage battery, the investment cost of the energy storage system is bound to be more optimized, the potential of industrial and commercial energy storage market will be further stimulated, industrial and commercial energy storage is expected to become a commercial and industrial photovoltaic after the new wind mouth.
Demand response is to utilize government funds or grid marketing expenses, and auxiliary service is to participate in power generation side market transactions with different funding sources. Power market auxiliary services refer to the services provided by power generation enterprises, grid operators and power users in order to maintain the safe and stable operation of the power system and ensure the quality of power, in addition to the normal production, transmission and use of power.
In recent years, with the vigorous development of the world economy and the rapid progress of science and technology, the electric power industry is experiencing a major change. The electric power industry is a traditional industry with a long history, and it plays a very important role in the development of the national economy. However, due to the special characteristics of the production, sale and use of electricity, the power industry has long been a monopoly, the implementation of power generation, transmission and distribution of integrated system. This system in the development of the power industry at the beginning of the power industry effectively promote the development of the power industry, but with the continuous expansion of the scale of the power industry, especially the development of the market economy in modern society, the traditional power system is more and more not adapted to the development of the economy, there is an urgent need to implement the electric power market, the introduction of competition mechanism.
Since the 1980s, the United Kingdom first carried out the exploration of the power market, followed by the United States, Norway, Australia, Argentina and other countries have also implemented the power market system. China in the late 1990s also began the pilot work of the electricity market. Not long ago, the country issued a power system reform program, clearly "the implementation of plant and network separation, the implementation of competitive bidding for Internet access, the establishment of power market operating rules and government regulatory system, the initial establishment of competition, open regional power market, the implementation of the new tariff mechanism" policy guidelines and policies. Although the specific system varies from country to country, its purpose is to eliminate monopoly, promote competition, and promote the development of the power industry. As the electricity market is a new mode of electricity production, its gradual implementation has brought a series of related issues need to be further studied.
In order to meet the needs of users and adapt to the competition among the same industry, power workers must be able to produce, transmit and distribute high-quality, low-cost electricity. Due to the special nature of power production, to ensure that users get high-quality, inexpensive electricity must rely on grid-related auxiliary measures to ensure the safe, economic and reliable operation of the power market. In the traditional mode of power production due to the implementation of unified scheduling, unified management, can better ensure the safety and reliability of power production; in the power market conditions under the autonomy of the power producers have been enhanced, but also on the safety of the grid, the reliable operation of the great challenge. The introduction of competition in power generation and the implementation of grid opening and the application of new technologies, such as FACTS and ASG C adjustable speed generator), increase the complexity of grid operation and control, and thus create new factors that cause problems in grid power angle stability, voltage stability, overloading, and system collapse[. This makes the issue of ancillary services more and more widely emphasized .
In addition, in the electricity market, power plants and users can no longer be required to provide ancillary services unconditionally, and therefore a number of issues must be addressed, such as the costs associated with each ancillary service, the contribution of each ancillary service provider, what ancillary services are used by each user, and how much is used. The pricing mechanism for ancillary services should not only ensure that the suppliers recover their costs, but also safeguard their reasonable profits. With the deepening of research and practice in the electricity market, the issue of ancillary services has attracted more and more interest from researchers and power companies due to its importance and technical complexity. Therefore, the study of auxiliary services and its pricing method has very important theoretical and practical significance in the power market. Many companies and scholars have carried out very useful explorations on the pricing of ancillary services. However, compared with the price of electricity, the research on pricing of auxiliary services started late and has not yet formed a theoretical system. Therefore, there is an urgent need for in-depth research on auxiliary services in the electricity market.
