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

A multi-time-scale, optimized control technology, applied to AC networks, electrical components, circuit devices, etc. with energy trade/energy transmission authority, can solve the problems of multi-energy complementary support grid frequency regulation that has not yet been implemented, and improve the grid The effect of frequency quality, smoothing grid frequency fluctuations, and improving energy utilization

Active Publication Date: 2021-04-13
GUANGXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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

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Embodiment Construction

[0032] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the technical solutions of the present invention will be described in further non-limiting detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Based on the characteristics of multi-energy flows and multi-time scales in the integrated energy system, the present invention proposes a primary frequency regulation method targeting the integrated energy system, builds a multi-energy complementary supporting power grid frequency adjustment control framework, and realizes the coordinated economic operation of the multi-energy supply of the integrated energy system , while stabilizing grid frequency fluctuations and improving grid frequency quality. The framework includes a hub control center and an integrated energy system model. The integrated energy system consists of photovoltaic power generation, combined heat and power...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24H02J3/00
CPCH02J3/008H02J3/24H02J2203/20
Inventor 刘辉谢海敏汪旎阳育德韦化
Owner GUANGXI UNIV
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