Electric vehicle and temperature control load polymer response-based frequency synergic control method

Abstract

The invention relates to an electric vehicle and temperature control load polymer response-based frequency synergic control method. The electric vehicle and temperature control load polymer response-based frequency synergic control method comprises the following steps of identifying response demand DP of a power system, and determining a current controllable electric vehicle in a grid, a temperature control load and working states thereof; building a controllable domain of a single electric vehicle and a hot pump, and calculating an electric vehicle state label SOB and a hot pump state label SOT; calculating a polymer parameter of a load; calculating required total power change quantity DPR0<EV> and DPR0<HP> of the vehicle and the hot pump when parameters R<EV> and R<HP> becomes 0; calculating alternative values of an adjustment signal DP<EV> issued to the electric vehicle and an adjustment signal DP<HP> issued to the hot pump; and verifying whether the alternative values of the DP<EV>and the DP<HP> exceed a frequency adjustment capability range of the polymer, correcting the alternative values if yes, determining final values of the DP<EV> and the DP<HP>, and generating the finalvalues in the electric vehicle polymer and the temperature control load polymer.

Description

technical field [0001] The invention belongs to the field of demand-side response control of controllable loads, and in particular relates to a power system frequency coordination control method based on the response capabilities of electric vehicles and temperature-controlled load aggregates. Background technique [0002] In recent years, with the continuous development of new energy technologies, the penetration rate of wind power, photovoltaic power generation and other new energy sources in the power grid has been increasing. Usually, the stable system frequency limit of the power grid is 50±0.5Hz. However, the randomness and uncertainty of wind power output will lead to fluctuations in the frequency of the power grid and affect the stable operation of the system. The self-generation control of traditional power plants is constrained by the ramp rate and high operating costs of the units. Therefore, the researchers propose to use flexible and controllable loads such as ...

AI Technical Summary

Problems solved by technology

Due to various factors such as the number of responsive loads and user needs, frequency control methods that only use electric vehicles or temperature-controlled loads are prone to problems such as insufficient response capabilities, and at the same time, excessive use of controllable loads is likely to cause secondary disturbances in the system (such as A large number of loads operate synchronously, and the power consumption is adjusted at the same time under the constraints of user demand, and the travel power rebounds)

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