Multi-time-scale optimal control method for multi-energy complementary support power grid frequency regulation

Abstract

The invention discloses a multi-time-scale optimal control method for multi-energy complementary supporting power grid frequency adjustment, comprising the following steps: the energy hub control center collects load demand, energy supply unit working status, electricity price and gas price information; establishes an integrated energy system for energy supply , energy storage and transformation equipment constraint model, with the goal of minimizing the operating cost, to solve the economic operating point of the energy supply unit of the energy hub; the measurement device obtains the real-time frequency fluctuation of the power grid, characterizes the supply and demand balance state of the power system, and uploads it to the hub control center; Establish a constraint model for multi-energy complementarity to support the primary frequency regulation of the power grid, with the goal of minimizing the frequency deviation of the power grid, solve the optimal output adjustment of the energy supply unit, and correct the long-term economic operation point; the energy hub control center adjusts the output according to the optimal output The frequency modulation task is issued; the energy supply unit responds to the frequency modulation command and implements a frequency adjustment.

Description

technical field [0001] Embodiments of the present invention relate to a grid frequency adjustment method, in particular, to a multi-time-scale optimal control method for multi-energy complementary support grid frequency adjustment. Background technique [0002] With the increase of global energy demand, the shortage of fossil energy and environmental problems have become increasingly prominent, the comprehensive and efficient utilization of energy has become the focus of attention of all countries in the world, and an integrated energy system has emerged as the times require. The integrated energy system refers to the organic coordination and optimization of the production, transmission and distribution (energy supply network), conversion, storage, consumption, and transaction of various energy sources in the process of planning, construction, and operation. Supply and sales integration system. On the one hand, it realizes cascaded utilization of energy and improves the com...

AI Technical Summary

Problems solved by technology

Electric vehicles and gas turbines, as important components of the integrated energy system, are important resources for grid frequency regulation, while multi-energy complementary support for grid frequency regulation has not yet been carried out.

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