CN-121981449-A - Low-carbon scheduling method for residential energy system considering hydrogen-geothermal coordination effect

CN121981449ACN 121981449 ACN121981449 ACN 121981449ACN-121981449-A

Abstract

The invention relates to a low-carbon dispatching method of a residential energy system considering a hydrogen-geothermal coordination effect, which comprises the steps of (1) constructing a basic physical model for representing energy flow and equipment physical characteristics in the residential energy system, (2) converting the basic physical model into a coupling constraint model based on dynamic coupling constraint among set types of energy supply in the residential energy system, (3) constructing an objective function of low-carbon dispatching according to a set dispatching cycle based on the coupling constraint model to obtain a complete optimization model, and (4) solving the optimization model to obtain operation strategies of all equipment in the residential energy system in the set dispatching cycle.

Inventors

LIAO QI
PENG YONG
QIU RUI
FU GUANGTAO
Liang Xiaoda
LIANG YONGTU

Assignees

中国石油大学(北京)

Dates

Publication Date: 20260505
Application Date: 20260107

Claims (10)

1. A residential energy system low-carbon scheduling method taking into account the hydrogen-geothermal co-ordination effect, comprising: Step (1), constructing a basic physical model for characterizing energy flow and equipment physical characteristics in the residential energy system; step (2), converting the basic physical model into a coupling constraint model based on dynamic coupling constraints between set types of energy supplies in the residential energy system; step (3), constructing a low-carbon dispatching objective function based on the coupling constraint model according to a set dispatching cycle to obtain a complete optimization model; and (4) solving the optimization model to obtain the operation strategy of each device in the residential energy system in the set scheduling period.
2. The residential energy system low-carbon dispatch method taking into account the hydrogen-geothermal co-ordination effect of claim 1, wherein the energy input of the residential energy system comprises electrical energy, natural gas, hydrogen and geothermal; the customer premise requirements of the residential energy system include electrical energy, natural gas, thermal energy, and cold energy.
3. The method for low-carbon dispatch of a residential energy system taking into account the effect of hydrogen-geothermal co-ordination as recited in claim 2, wherein the equipment in the residential energy system comprises a hydrogen storage tank, a hydrogen cogeneration unit, an electrical energy storage unit, a gas boiler, a heat storage tank, an electrical refrigeration unit, an absorption refrigeration unit, and a ground source heat pump, wherein: the hydrogen storage tank is used for storing hydrogen and is used by the hydrogen cogeneration device; The hydrogen-heat-power cogeneration device is used for generating electric energy and heat energy by utilizing the hydrogen released by the hydrogen storage tank, wherein the electric energy can be stored in the electric energy storage device or scheduled to a user side or an electric refrigerating device; The electric energy storage device is used for performing charge and discharge operation on electric energy for scheduling use; the gas boiler is used for acquiring natural gas, converting the natural gas into heat energy and providing the heat energy for a user side to use or store the heat energy into the heat storage tank; The electric refrigerating device is used for generating cold energy used by a user side based on electric power of the power grid or electric energy of the electric energy storage device; The absorption refrigeration device is used for acquiring heat energy in the heat storage tank and generating cold energy used by a user side; The ground source heat pump is used for acquiring electric power of a power grid or electric energy of the electric energy storage device, and processing geothermal energy to obtain heat energy stored in the heat storage tank or heat energy used by a user side.
4. A residential energy system low-carbon dispatch method taking into account the hydrogen-geothermal co-ordination effect as defined in claim 3, wherein said basic physical model includes power balance constraints characterizing residential electric load, ground source heat pump power consumption, and electric refrigeration device power consumption, provided by grid power, hydrogen cogeneration devices, and electric storage devices.
5. The method of low-carbon dispatch of residential energy systems accounting for the hydrogen-geothermal co-ordination effect of claim 4, further comprising thermal balance constraints characterizing the total heat demand from heat storage, cogeneration, gas fired boilers, and ground source heat pumps.
6. The method for low-carbon dispatching of residential energy systems taking into account the hydrogen-geothermal co-ordination effect as claimed in claim 3, wherein the dynamic coupling constraints in the coupling constraint model are specifically the proportional relationship between the amount of hydrogen supplied to the hydrogen cogeneration device at each time point in the dispatching cycle and the natural gas consumption at the corresponding time point.
7. The method of low carbon dispatch for a residential energy system accounting for the hydrogen-geothermal co-ordination effect of claim 6, wherein the objective function in the optimization model is to minimize carbon emissions during a dispatch period, including grid carbon emissions and natural gas carbon emissions.
8. The residential energy system low-carbon dispatch method taking into account the hydrogen-geothermal co-ordination effect of claim 7, wherein the mathematical formula of the objective function is characterized as: In the formula, the variables are -Representing the total carbon emission; Variable(s) -Representing the carbon emission coefficient of the electrical energy; Variable(s) -Represent the carbon emission coefficient of natural gas.
9. The residential energy system low-carbon dispatch method taking into account the hydrogen-geothermal co-ordination effect of claim 1, wherein the optimization model is solved in a time-sequential simulation according to an adjustment period T.
10. A computer storage medium, characterized in that a computer program is stored, which computer program is executed by a processor, implementing the method of any of claims 1 to 9.

Description

Low-carbon scheduling method for residential energy system considering hydrogen-geothermal coordination effect Technical Field The invention relates to the technical field of residential energy scheduling, in particular to a low-carbon scheduling method of a residential energy system considering a hydrogen-geothermal coordination effect. Background In the conventional art, the energy demand of residential areas is mainly provided by grid power. With global climate change and low-carbon concept advocacy, clean new energy sources (including wind power generation, solar photovoltaic power generation) are integrated into the grid system. The new energy has strong intermittence and volatility, which brings challenges to the stable operation of the system, and the surplus volatility power can be used for generating hydrogen by electrolysis water and is doped into a natural gas pipeline for stable utilization. Because of the strong volatility of the new energy, the prior art can further integrate (shallow) geothermal energy in the system, thereby providing more stable energy supply for the user side. Therefore, how to perform energy scheduling for a residential energy system integrated with hydrogen and geothermal energy to achieve the aim of minimum carbon emission becomes a problem to be solved. Disclosure of Invention Aiming at the problems, the invention aims at realizing depth synergy and advantage complementation of various energy sources aiming at a residential energy system integrated with hydrogen and geothermal energy, and finding the optimal operation strategy with the lowest global carbon emission on the premise of ensuring the safe and stable operation of the system. In order to achieve the above purpose, the present invention adopts the following technical scheme: In a first aspect, the present application provides a residential energy system low-carbon scheduling method that accounts for the hydrogen-geothermal co-ordination effect, comprising: Step (1), constructing a basic physical model for characterizing energy flow and equipment physical characteristics in the residential energy system; step (2), converting the basic physical model into a coupling constraint model based on dynamic coupling constraints between set types of energy supplies in the residential energy system; step (3), constructing a low-carbon dispatching objective function based on the coupling constraint model according to a set dispatching cycle to obtain a complete optimization model; and (4) solving the optimization model to obtain the operation strategy of each device in the residential energy system in the set scheduling period. In one implementation, the energy input of the residential energy system includes electrical energy, natural gas, hydrogen, and geothermal; the customer premise requirements of the residential energy system include electrical energy, natural gas, thermal energy, and cold energy. In one implementation, the apparatus in the residential energy system comprises a hydrogen storage tank, a hydrogen cogeneration device, an electrical energy storage device, a gas boiler, a heat storage tank, an electrical refrigeration device, an absorption refrigeration device, and a ground source heat pump, wherein: the hydrogen storage tank is used for storing hydrogen and is used by the hydrogen cogeneration device; The hydrogen-heat-power cogeneration device is used for generating electric energy and heat energy by utilizing the hydrogen released by the hydrogen storage tank, wherein the electric energy can be stored in the electric energy storage device or scheduled to a user side or an electric refrigerating device; The electric energy storage device is used for performing charge and discharge operation on electric energy for scheduling use; the gas boiler is used for acquiring natural gas, converting the natural gas into heat energy and providing the heat energy for a user side to use or store the heat energy into the heat storage tank; The electric refrigerating device is used for generating cold energy used by a user side based on electric power of the power grid or electric energy of the electric energy storage device; The absorption refrigeration device is used for acquiring heat energy in the heat storage tank and generating cold energy used by a user side; The ground source heat pump is used for acquiring electric power of a power grid or electric energy of the electric energy storage device, and processing geothermal energy to obtain heat energy stored in the heat storage tank or heat energy used by a user side. In one implementation, the base physical model includes power balance constraints characterizing residential electric loads, ground source heat pump power consumption, and electric refrigeration device power consumption, provided by grid power, hydrogen cogeneration devices, and electric storage devices. In one implementation, the basic physical model further includes a thermodynamic equilibrium constr