Integrated energy system optimization method, system and device based on gas thermal inertia
A technology that integrates energy systems and optimization methods, and is applied in system integration technology, information technology support systems, resources, etc. to achieve the effect of improving operating economy.
Pending Publication Date: 2021-08-24
SOUTHEAST UNIV
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Problems solved by technology
The volatility and randomness of renewable energy output bring challenges to power system frequency stability. Therefore, it is necessary to fully mobilize power system frequency regulation resources and encourage non-traditional frequency regulation resources with rapid adjustment capabilities to join power grid frequency regulation services
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[0077] Example: In a park-level comprehensive energy system, the electrical and thermal multi-energy coupling in the comprehensive energy system, the system structure diagram is as follows figure 1 . The electric heating load forecast of the system and the external power grid frequency support demand power forecast are as follows: figure 2 , 3 shown. Among them, the electricity purchase price adopts a time-of-use price, which is 0.83 yuan / kW during the peak period, 0.49 yuan / kW during the normal period, and 0.17 yuan / kW during the trough period; the fixed price of gas purchase is 0.266 yuan / kW; The fixed price is 0.040 yuan / kW; the thermal inertia frequency modulation price adopts a time-sharing price, which is 0.083 yuan / kW during the peak period, 0.040 yuan / kW during the normal period, and 0.017 yuan / kW during the trough period; the operating efficiency of the transformer is 0.98, and the electric boiler operation The efficiency is 0.98, the gas-to-electricity efficiency...
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The invention discloses an integrated energy system optimization method, system and device based on gas thermal inertia, and belongs to the field of integrated energy systems. The invention discloses a comprehensive energy system optimization method based on gas-thermal inertia. The method comprises the following steps: constructing a frequency modulation service model of an external power grid by taking the gas-thermal inertia as a frequency supporting point; based on the capacity consumption and the capacity income of the integrated energy system, constructing a target function by taking the lowest total cost as a target; and constructing scheduling constraint conditions including the gas inertia frequency modulation constraint and the thermal inertia frequency modulation constraint of the integrated energy system. Compared with the prior art, the gas-heat inertia participates in the power grid frequency modulation service and has the characteristics of flexible adjustment and quick response. Furthermore, the scheduling optimization of the integrated energy system is carried out under the consideration of the participation of gas-heat inertia in the power grid frequency modulation service, the flexibility of the gas-heat system of the integrated energy system can be fully mined, and the operation economy of the integrated energy system is effectively improved.
Description
technical field [0001] The invention relates to the field of integrated energy systems, in particular to an optimization method, system and device for an integrated energy system based on gas-thermal inertia. Background technique [0002] In recent years, under the pressure of the world energy crisis and environmental pollution, large-scale renewable energy has been connected to the power system. The volatility and randomness of renewable energy output pose challenges to power system frequency stability. Therefore, it is necessary to fully mobilize power system frequency regulation resources and encourage non-traditional frequency regulation resources with rapid adjustment capabilities to join power grid frequency regulation services. Different from the traditional power generation side frequency regulation method, the present invention proposes an air-heat inertial frequency regulation method for an integrated energy system. Contents of the invention [0003] Aiming at t...
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Login to View More IPC IPC(8): G06Q10/06G06Q30/02G06Q50/06G06F17/11
CPCG06Q10/06312G06Q30/0201G06Q50/06G06F17/11Y04S10/50Y04S50/14Y02E40/70
Inventor 孙维佳王琦汤奕
Owner SOUTHEAST UNIV