A method for interactive operation evaluation of distributed energy system on user side

Abstract

The present invention discloses a user-side distributed energy system interactive operation evaluation method, which relates to the technical field of operation evaluation methods, including the establishment of a user energy consumption behavior analysis model, the establishment of a heat loss model, the establishment of an energy compensation comparison model, and the comparison and analysis of the models. This method obtains a behavior analysis model based on the user's energy consumption, and at the same time establishes a compensation comparison curve model. By analyzing and processing the compensation comparison curve model, it can be obtained that the gas water heater heats the water to a certain temperature, and the electric heater works together to boil the water to the required temperature with the least cost, which facilitates the evaluation of the economic efficiency of the interactive operation of the distributed energy system, and is beneficial to the economic maximization of users when using the distributed energy system.

Description

Technical Field

[0001] The present invention relates to the technical field of evaluation methods, and in particular to a method for evaluating interactive operation of a user-side distributed energy system. Background Art

[0002] Distributed energy systems are relative to traditional centralized energy supply systems. Distributed energy systems are directly oriented to users, produce and supply energy on-site according to user needs, have multiple functions, and are medium and small energy conversion and utilization systems that can meet multiple goals. Among them, the system composed of solar substations and mobile gas tanks belongs to distributed energy systems. Distributed energy systems have greatly facilitated areas that cannot be centrally supplied with gas. From a synergistic and economic perspective, economic evaluation of distributed energy systems is needed to achieve economic maximization. Currently, there is no good method to evaluate the interactive operation of distributed energy systems on the user side. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the prior art, such as: there is currently no good method for evaluating the interactive operation of the user-side distributed energy system.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A user-side distributed energy system interactive operation evaluation method, step 1, establishing a user energy consumption behavior analysis model, collecting, counting and analyzing user energy consumption data, and establishing a user energy consumption behavior analysis model based on the analysis results;

[0006] Step 2: Establish a heat loss model, and establish a heat loss curve model according to the energy supply and energy supply time of the distributed energy system;

[0007] Step 3: Establishment of energy compensation comparison model. In the process of distributed energy system supplying energy, electric auxiliary heating is used to perform temperature compensation on the energy system, and a compensation comparison curve model is established.

[0008] Step 4: Compare and analyze the models. Analyze and compare the models obtained in steps 1, 2, and 3, and then conduct an economic evaluation.

[0009] Furthermore, in step one, the user energy consumption data is collected by obtaining the user's daily gas and electricity consumption from the photovoltaic power generation and mobile gas supply background, and statistically analyzing the peak and off-peak time periods of the user's electricity and gas consumption. The number of days for collection is at least one year, and then the user energy consumption model is calculated based on the total collected data.

[0010] Further, in step three, a temperature sensor is installed in the water tank of the user-side gas water heater, and an insulated water tank with a capacity of M liters is set up at the water outlet of the bathroom, and the insulated water tank is connected to the water tank of the user-side gas water heater;

[0011] An electric heater and a temperature sensor are arranged in the insulated water tank, and there are at least two energy collection situations. The first one is to use gas alone to heat the water to temperature A, and then transmit it to the water tank. After the water tank is filled with water, it is recorded whether the water flowing into the water tank is at temperature A. If the temperature A is not reached, the electric heater is used to heat the water in the water tank to temperature A. This process records the heating time T of the electric heater, the power consumption W and the gas consumption M. In step three, the water in the M-liter insulated water tank is drained, and then normal temperature tap water is injected. After filling, the electric water heater is used to heat the water in the M-liter insulated water tank to A temperature, this process records the electric heater heating time t and power consumption w. In the second case, gas is used alone to heat the water to half of the B temperature, and then transferred to the water tank. After the water tank is filled, the electric heater is used to heat the water in the water tank to B temperature. This process records the electric heater heating time Tb, power consumption Wb and gas consumption Mb. In the second case, the water in the M-liter insulated water tank is drained and then injected with normal temperature tap water. After filling, the electric water heater is used to heat the water in the M-liter insulated water tank to B temperature. This process records the electric heater heating time tb and power consumption wb.

[0012] Furthermore, the costs required for the two groups in the first case are calculated, and then the costs required for the two groups in the second case are calculated, where the first group in the first case adopts the formula Y=M*My+W*Wy; the second group adopts the formula Y=w*wy; the first group in the second case adopts the formula Y=Mb*My+Wb*Wy, and the second group adopts the formula Y=Wb*Wy; where Y is the total cost, M and Mb are the gas volume, Wb and W are the electricity consumption, My is the electricity price in the time period, and My is the unit price of gas. According to the above formula, a comparison curve model is obtained.

[0013] Furthermore, in step 2, a heat loss model is derived based on the length of the water pipe, and the heat loss filter adopts S=C / L, where C is the temperature difference between the water heated in the gas water heater and the water in the M-liter insulated water tank, and L is the length of the water pipe.

[0014] Furthermore, when establishing the heat loss curve model in step 2, the indoor ambient temperature is maintained at 25°C.

[0015] Furthermore, when analyzing and comparing the models in step 4, a distributed energy system interactive computer system containing data analysis and acquisition software is used for processing.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention derives a behavioral analysis model from the user's energy usage and establishes a compensation comparison curve model. By analyzing and processing the compensation comparison curve model, it can be determined how much the gas water heater heats the water to the required temperature at the lowest cost after the electric heater works together. This facilitates the evaluation of the economic efficiency of the interactive operation of the distributed energy system and is beneficial to maximizing the efficiency of users when using the distributed energy system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] Reference Figure 1 , a user-side distributed energy system interactive operation evaluation method, S1 user energy consumption behavior analysis model establishment, user energy consumption data collection, statistics and analysis, based on the analysis results to establish a user energy consumption behavior analysis model;

[0022] S2 establishes a heat loss model. According to the energy supply and energy supply time of the distributed energy system, a heat loss curve model is established. According to the length of the water pipe, a heat loss model is obtained. The heat loss filter adopts S=C / L, where C is the temperature difference between the water heated in the gas water heater and the water in the M-liter insulation water tank, and L is the length of the water pipe. When establishing the heat loss curve model, the indoor ambient temperature is kept at 25°C.

[0023] The establishment of S3 energy compensation comparison model: in the process of distributed energy system supply, electric auxiliary heating is used to compensate the temperature of the energy system and establish a compensation comparison curve model;

[0024] Comparison and analysis of the S4 model: analyze and compare the models obtained in steps one, two and three, and then conduct an economic evaluation.

[0025] The user's daily gas and electricity consumption is obtained from the photovoltaic power generation and mobile gas supply background, and the peak and off-peak time periods of the user's electricity and gas consumption are statistically analyzed. The collection days are at least one year, and then the user's energy consumption model is calculated based on the total collected data; a temperature sensor is installed in the water tank of the gas water heater on the user side, and an insulated water tank with a capacity of M liters is set up at the water outlet of the bathroom. An electric heater and a temperature sensor are set in the insulated water tank. There are at least two energy collection situations. The first is to use gas alone to heat the water to temperature A, and then transmit it to the water tank In the first step, after the water tank is filled with water, record whether the water flowing into the water tank is at temperature A. If it does not reach temperature A, use an electric heater to heat the water in the water tank to temperature A. This process records the heating time T, power consumption W and gas consumption M of the electric heater. In step three, drain the water in the M-liter insulated water tank and then inject normal temperature tap water. After filling, use an electric water heater to heat the water in the M-liter insulated water tank to temperature A. This process records the heating time t and power consumption w of the electric heater. In the second case, gas alone is used to heat the water to half of temperature B. Then it is transmitted to the water tank. After the water tank is filled, an electric heater is used to heat the water in the water tank to temperature B. This process records the heating time Tb, power consumption Wb and gas consumption Mb of the electric heater. The second method is to drain the water in the M-liter insulated water tank and then inject normal temperature tap water. After filling, an electric water heater is used to heat the water in the M-liter insulated water tank to temperature B. This process records the heating time tb and power consumption wb of the electric heater. Calculate the costs required for the two groups in the first case, and then calculate the costs required for the two groups in the second case. The first case One group uses the formula Y=M*My+W*Wy; the second group uses the formula Y=w*wy; in the second case, the first group uses the formula Y=Mb*My+Wb*Wy, and the second group uses the formula Y=Wb*Wy; where Y is the total cost, M and Mb are gas volumes, Wb and W are electricity consumption, My is the electricity price in the time period, and My is the unit price of gas. According to the above formula, a comparison curve model is obtained. When analyzing and comparing the model, a distributed energy system interactive computer system containing data analysis and acquisition software is used for processing.

[0026] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A user-side distributed energy system interactive operation evaluation method, characterized by: The steps include: Step 1: Establishment of a user energy consumption behavior analysis model: Collection, statistics and analysis of user energy consumption data, and establishment of a user energy consumption behavior analysis model based on the analysis results; Step 2: Establish a heat loss model: Establish a heat loss curve model based on the energy supply and energy supply time of the distributed energy system; Step 3: Establishment of energy compensation comparison model: During the energy supply process of the distributed energy system, electric auxiliary heating is used to perform temperature compensation on the energy system, and a compensation comparison curve model is established; Step 4: Comparison and analysis of models: Analyze and compare the models obtained in steps 1, 2, and 3, and then conduct interactive operation evaluation of the distributed energy system on the user side; In step three, a temperature sensor is installed in the water tank of the gas water heater on the user side, and an insulated water tank with a capacity of M liters is set up at the water outlet of the bathroom, and the insulated water tank is connected to the water tank of the gas water heater on the user side; An electric heater and a temperature sensor are arranged in the insulated water tank, and there are at least two energy collection situations. In the first situation, gas is used alone to heat the water to temperature A and then transmit it to the insulated water tank. After the water tank is filled with water, it is recorded whether the water flowing into the water tank is at temperature A. If the temperature A is not reached, the electric heater is used to heat the water in the water tank to temperature A. This process records the heating time T of the electric heater, the power consumption W and the gas consumption M. In step three, the water in the M-liter insulated water tank is drained, and then normal temperature tap water is injected. After filling, the electric water heater is used to heat the water in the M-liter insulated water tank to temperature A. This process records the heating time t of the electric heater and the power consumption w; In the second case, gas is used alone to heat the water to half of the temperature B and then transferred to the water tank. After the water tank is filled, an electric heater is used to heat the water in the water tank to the temperature B. This process records the heating time Tb, power consumption Wb and gas consumption Mb of the electric heater. In the second case, the water in the M-liter insulated water tank is drained and then injected with normal temperature tap water. After it is filled, an electric water heater is used to heat the water in the M-liter insulated water tank to the temperature B. This process records the heating time tb and power consumption wb of the electric heater. Calculate the costs required for the two groups in the first case, and then calculate the costs required for the two groups in the second case. The formula used for the first group in the first case is Y=M*My+W*Wy; the formula used for the second group is Y=w*wy; the formula used for the first group in the second case is Y=Mb*My+Wb*Wy, and the formula used for the second group is Y=Wb*Wy; where Y is the total cost, M and Mb are the gas volume, Wb and W are the electricity consumption, My is the electricity price in the time period, and My is the unit price of gas. According to the above formula, a comparison curve model is obtained; In step 2, a heat loss model is derived based on the length of the water pipe, and the heat loss filter adopts S=C / L, where C is the temperature difference between the water heated in the gas water heater and the water in the M-liter insulation water tank, and L is the length of the water pipe; When establishing the heat loss curve model in step 2, the indoor ambient temperature is maintained at 25°C.

2. A user-side distributed energy system interactive operation evaluation method according to claim 1, characterized in that: In step one, the user energy consumption data is collected by obtaining the user's daily gas and electricity consumption from the photovoltaic power generation and mobile gas supply background, and statistically analyzing the peak and off-peak time periods of the user's electricity and gas consumption. The collection period is at least one year, and then the user energy consumption model is calculated based on the total collected data.

3. A user-side distributed energy system interactive operation evaluation method according to claim 1, characterized in that: When analyzing and comparing the models in step 4, a distributed energy system interactive computer system containing data analysis and acquisition software is used for processing.

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