Ultra-high-voltage direct-current fault scheduling method based on aggregated constant-temperature control load

Abstract

The invention discloses an ultra-high-voltage direct-current fault scheduling method based on an aggregated constant-temperature control load, and belongs to the field of electric power system emergency circumstance scheduling. The method includes the steps: building an ultra-high-voltage transmission power reliability model based on ultra-high-voltage element fault probability; performing constant-temperature control load individual scheduling capacity modeling based on electric thermal characteristics; performing aggregation modeling on different constant-temperature control loads in the same area based on constant-temperature control load individual scheduling capacity modeling to determine total constant-temperature control load scheduling capacity; combining an aggregated constant-temperature control load scheduling model and a conventional unit scheduling model based on an optimal power flow module, acquiring an optimal scheduling scheme under the ultra-high-voltage direct-current fault scheduling condition, and assessing the scheduling participation degree of the constant-temperature control load. According to the method, the scheduling participation degree of the constant-temperature control load is assessed, total scheduling capability of a system is improved, the running reliability of a receiving end network of an ultra-high-voltage direct-current system is effectively improved, and the total scheduling cost of the system can be reduced.

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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