UHVDC Fault Dispatch Method Based on Aggregate Constant Temperature Control Load

Abstract

The invention discloses an UHV DC fault scheduling method based on aggregated constant temperature control load, and belongs to the field of power system emergency scheduling. The invention comprises the steps of: establishing a reliability model of UHV transmission power based on the failure probability of UHV components; modeling the individual dispatching capacity of constant temperature control loads based on the electrothermal characteristics; The constant temperature control load is aggregated and modeled to determine the overall dispatch capacity of the constant temperature control load; based on the optimal power flow model, the aggregate constant temperature control load dispatch model is combined with the traditional unit dispatch to obtain the optimal dispatch plan in the event of a UHV DC system failure And evaluate the degree to which the constant temperature control load participates in dispatching. This technical solution evaluates the degree to which the constant temperature control load participates in dispatching, improves the total dispatching capacity of the system, effectively improves the operation reliability of the receiving end network of the UHV DC system, and can reduce the total dispatching cost of the system.

Description

technical field [0001] The invention belongs to the field of power system emergency dispatching, in particular to an UHV DC fault dispatching method based on aggregated constant temperature control load. Background technique [0002] In the traditional power system, the scheduling plan of the unit is formulated by the power grid company. When the system is running in real time, when the system fails, such as a transmission line failure, the power grid company will conduct emergency real-time dispatch to ensure the reliable operation of the system. The current emergency real-time dispatch mainly focuses on the adjustment of the output of the motor unit, while the adjustment of the power consumption on the demand side is relatively rare. At present, my country is actively promoting the reform of the electricity market. In the market environment, users can flexibly change their electricity consumption according to real-time electricity prices or other market information, and ...

AI Technical Summary

Problems solved by technology

However, in the face of the power market reform, in the case of system emergency, how to use the constant temperature control load combined with the traditional unit for optimal scheduling still needs further research

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