Method for improving power utilization reliability of major user based on active power seeking

Abstract

The invention relates to a method for improving the power utilization reliability of a major user based on active power seeking, and belongs to the technical field of power grid management. The method comprises the following steps of acquiring a real-time stoppage probability P of each component in a generation / transmission / transformation / distribution system according to a real-time running state of the system; calculating a load loss probability PL of a nose where the major user is located in the generation / transmission system according to P; calculating load loss probabilities Pf of all outgoing lines of the transformation system supplying power to the major user according to P and PL; calculating a power outage probability P<*>k of the major user according to P and Pf; calculating P<*>k under all feasible transformation and distribution power supply schemes, and employing the scheme corresponding to a minimum value as a reliable power supply scheme. According to the method, the characteristic that the power supply reliability of the user is constantly changed along with the running state of the system is taken into account, and power supply schemes are dynamically provided for the major user according to local conditions by regulating transformation and distribution system network topology, so that the power utilization risk of the major user in any running state of the system is always kept at the lowest level.

Description

technical field [0001] The invention relates to a method for improving the reliability of key users' power consumption based on active power source searching, and belongs to the technical field of power grid management. Background technique [0002] For the sake of safe production and operation, contemporary power users have put forward higher and higher requirements for the reliability of power supply. Many power users not only do not allow long-term power outages, but even short-term power interruptions and voltage dips are also intolerable. For example, Beijing has a total of 1,016 important second-level and above customers, including 38 special-level users such as the office of the Party Central Committee and the State Council. In 2011, there were 179 political power supply tasks for 295 days. These important users are very sensitive to voltage sags and short-term interruptions during specific periods of time, such as lighting in important places, command systems, audio...

AI Technical Summary

Problems solved by technology

However, in fact, the electric energy of power users is transmitted step by step through multiple links such as power generation, high-voltage transmission, power transformation, and medium and low-voltage power distribution. Any problem in any link may cause problems in the power supply of important loads.

When there is a problem in the power generation and transmission system, if only relying on the existing power distribution system management methods, the system manager may not be able to discover the potential risk of power supply to important users, which may cause losses

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