A method to improve the reliability of key users' power consumption based on active power source search

Abstract

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. First, according to the real-time operating status of the system, obtain the real-time outage probability P of each component in the relevant generation / transmission / transformation / distribution system; according to P, calculate the load loss probability p of the node where the key user is located in the power generation and transmission system L ; according to P, P L , calculate the load loss probability p of all outgoing lines of the substation system supplying power to key users f ; According to P, p f , to calculate the power outage probability of key users Calculate all feasible variable, power distribution and power supply schemes Take the scheme corresponding to the minimum value as the high-reliability power supply scheme. This method takes into account the characteristics that the user's power supply reliability changes from time to time with the system's operating status. By adjusting the network topology of the substation and power distribution system, it dynamically provides power supply solutions for key users according to local conditions, so as to ensure the key users' safety in any operating state of the system. Electricity risk is always kept low.

Description

Technical field [0001] The invention relates to a method for improving the reliability of power consumption of key users based on active search of power sources, 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 supply interruptions and voltage drops cannot be tolerated. For example, Beijing has a total of 1,016 important customers at the second level and above, including 38 special-level customers such as the office of the Party Central Committee and the State Council. In 2011, the number of political power supply tasks reached 179 and 295 days. These important users are very sensitive to voltage sags and short-term interruptions during specific periods, such as lighting, command systems, and so...

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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