Comprehensive energy supply system reliability detection method considering state reverse analysis

Abstract

The invention discloses a comprehensive energy supply system reliability detection method considering state reverse analysis. The method comprises the following steps: firstly, constructing an energy conversion model of a multi-energy coupling element in a comprehensive energy supply system; thirdly, constructing an output power model of the multi-energy coupling element based on the energy conversion model of the multi-energy coupling element and initial input energy of the comprehensive energy supply system; and finally, the reliability of the comprehensive energy supply system is rapidly detected by using the output power model of the multi-energy coupling element. The method provided by the invention focuses on the component combination of which the output power is smaller than the energy demand to realize the rapid evaluation of the reliability of the comprehensive energy supply system.

Description

Technical Field

[0001] This invention relates to a reliability assessment method for integrated energy systems, specifically to a reliability testing method for integrated energy supply systems that considers state-backward analysis. Background Technology

[0002] The reliability of an integrated energy supply system can be defined as its ability to continuously, stably, and uninterruptedly supply users with energy of standard quality while meeting the diverse energy needs of society and users. The reliability of an integrated energy supply system directly affects not only the security and stability of energy supply but also profoundly impacts the economic efficiency and environmental benefits of the entire energy system. Therefore, accurately assessing and evaluating the reliability level of an integrated energy supply system is crucial not only for its scientific planning and rational layout but also for ensuring that the system can fully realize its effectiveness during actual operation, achieving a win-win situation of efficient energy utilization and environmental protection.

[0003] However, most traditional methods for reliability testing of integrated energy supply systems rely on the traversal principle. This method achieves accurate reliability assessment by meticulously calculating all possible system states. While this assessment process can theoretically calculate system reliability accurately, its efficiency becomes increasingly apparent in practical applications, especially in scenarios with relatively low energy demands. Specifically, when the system is in a low-energy-demand state, traversing states to calculate reliability often generates numerous system states that clearly meet the system's energy requirements. This is particularly true when the integrated energy supply system contains multi-energy coupled components with complex energy coupling processes; the system's energy changes become even more intricate due to the interactions of these components. This complexity not only increases the difficulty of system state traversal but also further increases the computational burden due to the clearly satisfactory system states generated during the traversal. If the integrated energy supply system contains many components, it may even be impossible to perform system reliability testing within a reasonable timeframe. This poses a challenge to the stable operation and energy efficiency improvement of integrated energy supply systems. Summary of the Invention

[0004] To address the problems and needs in the background technology, this invention proposes a comprehensive energy supply system reliability detection method that considers state reverse analysis.

[0005] The technical solution of the present invention is as follows:

[0006] I. A Reliability Testing Method for Integrated Energy Supply Systems Considering State Backward Analysis

[0007] Step 1: Construct an energy conversion model for multi-energy coupling components in an integrated energy supply system;

[0008] Step 2: Based on the energy conversion model of the multi-energy coupling element and the initial input energy of the integrated energy supply system, construct the output power model of the multi-energy coupling element;

[0009] Step 3: Use the output power model of multi-energy coupling components to quickly test the reliability of the integrated energy supply system.

[0010] The first step is specifically as follows:

[0011] Based on the number of states and energy types of the multi-energy coupling element, the energy conversion capability of the multi-energy coupling element in the integrated energy supply system m in different states to convert the initial input energy into each type of energy in the output power is constructed. The energy conversion model of the multi-energy coupling element is composed of the energy conversion capability of the multi-energy coupling element in different states to convert the initial input energy into each type of energy in the output power, v = 1, 2, ..., V, where V represents the number of energy types of the multi-energy coupling element.

[0012] The second step is as follows:

[0013] 2.1) Multiply the energy conversion capability of the multi-energy coupling element in each state of converting the initial input energy into output power by the initial input energy of the integrated energy supply system to obtain the output power of the multi-energy coupling element considering each energy type in each state. Then, iterate through the energy conversion capabilities of all energy types in that state to convert the initial input energy into output power to obtain the output power of the multi-energy coupling element considering all energy types in that state.

[0014] 2.2) Change the state of the multi-energy coupling element and repeat 2.1) until the output power of the multi-energy coupling element under different states considering all energy types is calculated and obtained, thereby obtaining the output power model of the multi-energy coupling element.

[0015] The third step is specifically as follows:

[0016] 3.1) Construct a transition integrated power supply system consisting of a multi-energy coupling element, and calculate the transition reliability of the transition integrated power supply system; if the transition reliability of the transition integrated power supply system is greater than or equal to the system reliability threshold, then the reliability of the integrated power supply system meets the requirements; otherwise, proceed to 3.2).

[0017] 3.2) Increase the number of multi-energy coupling elements in the current transition integrated energy supply system by one to form a new transition integrated energy supply system, and then calculate the transition reliability of the latest transition integrated energy supply system;

[0018] 3.3) If the current transition reliability of the integrated energy supply system is greater than or equal to the system reliability threshold, then the reliability of the integrated energy supply system meets the requirements; otherwise, proceed to 3.2). If the number of multi-energy coupling elements in the latest transition integrated energy supply system is greater than the number of multi-energy coupling elements in the integrated energy supply system, then the reliability of the integrated energy supply system does not meet the requirements, and the reliability test of the integrated energy supply system is completed.

[0019] II. A reliability testing device for integrated energy supply systems that considers state-backward analysis

[0020] The output power generation unit of the multi-energy coupling element is used to calculate the output power of each multi-energy coupling element in the integrated energy supply system under each state by utilizing the initial input energy and the multi-energy conversion capability of the multi-energy coupling element.

[0021] Transitional integrated energy supply system construction unit, used to construct a transitional integrated energy supply system according to the number of multi-energy coupling elements designed;

[0022] Transition reliability calculation unit, used to calculate the transition reliability of the latest integrated transition energy supply system;

[0023] The system reliability detection unit is used to determine whether the reliability of the integrated energy supply system meets the requirements based on the transition reliability of the transition integrated energy supply system. If it does, the reliability detection is completed; otherwise, the number of multi-energy coupling elements in the transition integrated energy supply system is increased by one until the reliability of the integrated energy supply system meets the requirements or the number of multi-energy coupling elements in the latest transition integrated energy supply system exceeds the number of multi-energy coupling elements in the integrated energy supply system.

[0024] III. A computer device

[0025] The device includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of the integrated power supply system reliability detection method that considers state back-end analysis.

[0026] IV. A computer-readable storage medium

[0027] The storage medium stores a computer program, which, when executed by a processor, implements the steps of the integrated power supply system reliability detection method that considers state back-end analysis.

[0028] V. A computer program product

[0029] The product includes a computer program / instruction that, when executed by a processor, implements the steps of the integrated power supply system reliability testing method considering state back-end analysis.

[0030] To address the computation time challenge of state traversal in traditional integrated energy supply system reliability testing, the method proposed in this invention does not require traversing all system states, but only traversing the states of systems with energy requirements less than the system's energy demand. By changing the calculation method of system states, the calculation process of system states that can meet the system's energy demand is reduced.

[0031] Specifically:

[0032] This invention starts with the state of components. Once the superposition of the states of some components meets the system's energy requirements, the superposition of these states is stopped, and the process of superimposing the states of the remaining components begins. This iterative process continues until all components have been traversed. This reverse traversal, where the energy requirements are less than the system's energy requirements, enables rapid detection of the reliability of the integrated energy supply system. When the system's energy requirements are low, the superposition of component states can easily meet them, thus preventing the superposition of states that clearly meet the energy requirements from being generated, reducing the calculation process for these states.

[0033] The beneficial effects of this invention are:

[0034] Compared to existing methods, the method proposed in this invention focuses more on combinations of multi-energy coupled components whose output power is less than the system's energy demand. By performing a reverse traversal of the states of these multi-energy coupled components—that is, starting from 1 and gradually increasing the system output through combinations of multi-energy coupled components—the system output is increased until it reaches or exceeds the system's energy demand. This reverse traversal approach effectively avoids the calculation of redundant states in traditional methods, making the reliability testing process more efficient.

[0035] The method proposed in this invention also possesses good scalability and flexibility, enabling it to adapt to integrated energy supply systems of varying scales and complexities. As the scale of integrated energy supply systems expands and the number of multi-energy coupling components increases, the method of this invention provides strong support for the subsequent optimized design and operation scheduling of integrated energy supply systems through state traversal related to system energy demand.

[0036] The method proposed in this invention is suitable for application scenarios with relatively low energy demand and a large number of multi-energy coupling components. Attached Figure Description

[0037] Figure 1 This is a logic block diagram of the method of the present invention.

[0038] Figure 2 This is the calculation logic diagram for the transition reliability of the transition integrated energy supply system.

[0039] Figure 3 This is a schematic diagram of the integrated energy supply system.

[0040] Figure 4This is a schematic diagram of the transitional integrated energy supply system.

[0041] Figure 5 This is a schematic diagram of a multi-energy coupling element. Detailed Implementation

[0042] To enable those skilled in the art to better understand the present invention and to more clearly define the scope of protection of the present invention, the present invention will be described in detail below with reference to certain specific embodiments and accompanying drawings. It should be noted that the following are only some specific embodiments of the present invention, and are merely a part of the embodiments of the present invention. The specific and direct descriptions of related structures are only for the convenience of understanding the present invention, and the specific features do not necessarily or directly limit the scope of the present invention. Conventional selections and substitutions made by those skilled in the art under the guidance of the present invention, as well as reasonable arrangements and combinations of several technical features under the guidance of the present invention, should all be considered within the scope of protection of the present invention.

[0043] like Figure 1 and Figure 5 As shown, the reliability testing method for a comprehensive energy supply system considering state-backward analysis proposed in this invention includes the following steps:

[0044] Step 1: Construct an energy conversion model for a single multi-energy coupling element in an integrated energy supply system. The energy conversion model is used to represent the conversion process between various energy sources within the multi-energy coupling element.

[0045] like Figure 3 As shown, an integrated energy supply system consists of multiple energy coupling elements with the same function connected in parallel. These elements include, for example, natural gas generator units and combined cooling, heating, and power (CCHP) units. The reliability of an integrated energy supply system refers to the probability that the system's output power is greater than or equal to the known system energy demand. The system's output power is determined by the sum of the output power of the multiple energy coupling elements in their respective states.

[0046] The integrated energy supply system m consists of n multi-energy coupling elements connected in parallel. The operating principle of the multi-energy coupling elements is to convert the initial input energy of the system into the energy required by the system through the multi-energy conversion capability of the elements. For example, if the multi-energy coupling element is a natural gas generator, then the initial input energy of the system is natural gas, and the natural gas generator can convert natural gas into electrical energy to supply energy to the subsequent energy transmission and distribution system.

[0047] Each multi-energy coupling element has 1 state and V energy type. A state refers to the different energy conversion capabilities of the natural gas unit. An energy type refers to the energy type involved in the multi-energy coupling element, such as electricity, heat, or natural gas. The state distributions of each multi-energy coupling element are independent. Considering that multi-energy coupling elements can convert various energy sources, this invention constructs an energy conversion capability in the integrated energy supply system m based on the state number and energy type of the multi-energy coupling elements, representing the energy conversion capability of each energy type v in the output power of the multi-energy coupling elements under different states. The energy conversion model of the multi-energy coupling elements is composed of the energy conversion capabilities of the multi-energy coupling elements in different states, where v = 1, 2, ..., ..., V, and V represents the number of energy types of the multi-energy coupling element. The specific formula is as follows:

[0048]

[0049] in, This represents the energy conversion capability of a multi-energy coupling element i in a comprehensive energy supply system m, in state j, to convert the initial input energy into energy type v in the output power. Let v' represent the energy conversion capability of a multi-energy coupling element i in a comprehensive energy supply system m, where v' = 1, 2, ..., ... V, in state j. The probability that the multi-energy coupling element i is in state j is...

[0050] Step 2: Based on the energy conversion model of the multi-energy coupling element and the initial input energy of the integrated energy supply system, construct the output power model of a single multi-energy coupling element. The output power model is used to represent the conversion process between the various output energies of the multi-energy coupling element and the initial input energy.

[0051] The second step is as follows:

[0052] 2.1) In the energy conversion model of the multi-energy coupling element, the energy conversion capability of the multi-energy coupling element in each state j to convert the initial input energy into each type of energy v in the output power is multiplied by the initial input energy of the integrated energy supply system to obtain the output power of the multi-energy coupling element considering each energy type in each state j. This process is repeated for all energy types in that state to convert the initial input energy into output power, thus obtaining the output power of the multi-energy coupling element considering all energy types in that state j. The formula is as follows:

[0053]

[0054] in, This represents the output power of the multi-energy coupling element i in state j of the integrated energy supply system m. This represents the output power of the multi-energy coupling element i in the integrated energy supply system m, considering energy type v under state j. This represents the energy conversion capability of a multi-energy coupling element i in a comprehensive energy supply system m, in state j, to convert the initial input energy into energy type v in the output power. This represents the energy conversion capability of a multi-energy coupling element i in a comprehensive energy supply system m, which transforms energy type a in the initial input energy into energy type v in the output power under state j. The initial input energy for a comprehensive energy supply system considering energy type a. The initial input energy for a comprehensive energy supply system considering energy type v.

[0055] 2.2) Change the state of the multi-energy coupling element and repeat 2.1) until the output power of the multi-energy coupling element under different states considering all energy types is calculated and obtained, thereby obtaining the output power model of the multi-energy coupling element.

[0056] The third step is to use the output power model of the multi-energy coupling element to quickly detect the reliability of the integrated energy supply system, and optimize the scheduling of the integrated energy supply system based on the reliability detection results, so as to achieve stable operation and improved energy efficiency of the integrated energy supply system.

[0057] like Figure 2 As shown, the third step is as follows:

[0058] 3.1) Construct a transition integrated power supply system consisting of a multi-energy coupling element, and calculate the transition reliability of the transition integrated power supply system; if the transition reliability of the transition integrated power supply system is greater than or equal to the system reliability threshold, then the reliability of the integrated power supply system meets the requirements; otherwise, proceed to 3.2).

[0059] The formula for calculating the transient reliability of a transient integrated power supply system consisting of a multi-energy coupling element is as follows:

[0060]

[0061] Using this method, all possible outcomes where the output power of the multi-energy coupling element 1 is less than or equal to the energy demand of the transition system will be considered.

[0062] Among them, R m,1 (demand',1) represents the transition reliability of a transition integrated power supply system with a transition system energy demand of demand' and a total of 1 multi-energy coupled components, d' v This indicates the energy demand of a transition system considering energy type v. This represents the probability of multi-energy coupling element 1 in state b within the integrated energy supply system m. The energy demand of the transition system is indicated as Transition reliability of a transition integrated power supply system with a total number of 0 multi-energy coupling elements. This represents the output power of the multi-energy coupling element 1 in state b of the integrated energy supply system m. This represents the output power of multi-energy coupling element 1 in the integrated energy supply system m, considering energy type v under state b. The initial input energy for a comprehensive energy supply system considering energy type a. This indicates the energy conversion capability of the multi-energy coupling element 1 in the integrated energy supply system m, under state b, to transform energy type a in the initial input energy into energy type v in the output power.

[0063] 3.2) Increase the number of multi-energy coupling elements in the current transition integrated energy supply system by one to form a new transition integrated energy supply system, and then calculate the transition reliability of the latest transition integrated energy supply system;

[0064] 3.3) If the current transitional reliability of the integrated energy supply system is greater than or equal to the system reliability threshold, then the reliability of the integrated energy supply system meets the requirements; otherwise, proceed to 3.2). If the number of multi-energy coupling elements in the latest transitional integrated energy supply system is greater than the number n of multi-energy coupling elements in the integrated energy supply system, then the reliability of the integrated energy supply system does not meet the requirements, thus completing the reliability test of the integrated energy supply system. The structural diagram of the transitional integrated energy supply system is shown below. Figure 4 As shown.

[0065] 3.2) and 3.3) are specifically as follows:

[0066] If the transitional integrated power supply system consists of only two multi-energy coupled components, namely component 1 and component 2, then the transitional reliability model of the transitional integrated power supply system is as follows:

[0067]

[0068] First consider component 2, if the transition system's energy demand... If the value is less than or equal to 0 for any energy type, then The value is directly equal to 1, and no further calculations are needed. If this condition is not met, then a transitional reliability calculation for a transitional integrated energy supply system consisting of only one multi-energy coupling element (element 1) is required. The calculation process for this transitional integrated energy supply system is the same as described above. If the transitional system's energy demand... If the value is less than or equal to 0 for any energy type, then It should be equal to 1 directly, otherwise Equal to 0, for In this case, there is no need to calculate the transition reliability of the subsequent integrated energy system, because there are no more multi-energy coupling elements to construct an integrated energy supply system at this point. Using this method, the possibility that the sum of the output power of multi-energy coupling elements 1 and 2 in each state is less than or equal to the energy demand of the transition system will be traversed.

[0069] Among them, R m,2 (demand',2) represents the transition reliability of a transition integrated energy supply system with a transition system energy demand of demand' and a total of 2 multi-energy coupled components. The energy demand of the transition system is indicated as Transition reliability of a transition integrated power supply system with a total of 1 multi-energy coupling element. This represents the output power of the only multi-energy coupling element 2 in the integrated energy supply system m under state b. This represents the output power of the multi-energy coupling element 2 in the integrated energy supply system m, considering energy type v under state b. This represents the probability of multi-energy coupling element 2 in state b in the integrated energy supply system m.

[0070] The energy demand of the transition system is indicated as Transition reliability of a transition integrated power supply system with a total number of 0 multi-energy coupling elements. This indicates the energy conversion capability of the multi-energy coupling element 2 in the integrated energy supply system m, under state b, to transform energy type a in the initial input energy into energy type v in the output power. The initial input energy for a comprehensive energy supply system considering energy type a.

[0071] Following this logic, the transition reliability model of a transition integrated power supply system composed of k multi-energy coupled elements can be expressed as:

[0072]

[0073] Using this method, all possible outcomes in which the sum of the output power of the multi-energy coupling elements 1, 2, up to k in each state is less than or equal to the energy demand of the transition system will be traversed.

[0074] Among them, R m,k (demand',k) represents the total number of multi-energy coupling elements in the transition system with energy demand demand', and k (=1,2,...,n). m Transition reliability of the integrated energy supply system. The energy demand of the transition system is indicated as Transition reliability of a transition integrated power supply system with a total number of k-1 multi-energy coupling elements. This represents the output power of the multi-energy coupling element k in the integrated energy supply system m under state b. This represents the output power of the multi-energy coupling element k in the integrated energy supply system m, considering energy type v under state b. This represents the probability of a multi-energy coupling element k in state b within an integrated energy supply system m. This represents the energy conversion capability of the multi-energy coupling element k in the integrated energy supply system m, under state b, to transform energy type a in the initial input energy into energy type v in the output power. The initial input energy for a comprehensive energy supply system considering energy type v.

[0075] When the number of components is 0 and demand' is greater than 0, R m,0 (demand',0) equals 0, meaning that a transitional integrated energy supply system without any multi-energy coupling components has a transitional reliability of 0 under a transitional system energy demand greater than 0. This is because an integrated energy supply system without multi-energy coupling components cannot meet the energy demand. When the transitional system energy demand demand'=(d' 1 ,d' 2 ,...,d' V When considering any energy type, the energy demand is less than or equal to 0, R m,k (demand',k) equals 1, meaning that when the energy demand of the transition system for any energy type v is less than or equal to 0, the transition reliability of the integrated energy supply system composed of any component (including 0 multi-energy coupling components) is 1. This is because, regardless of the number of multi-energy coupling components, the reliability of the integrated energy supply system without energy demand is always 1.

[0076] Based on the above transition reliability model, the number of multi-energy coupling elements k starts from 1 and proceeds sequentially to n from large to small. This allows us to calculate the transition reliability of all transition integrated energy supply systems composed of any number of multi-energy coupling elements in the integrated energy supply system m.

[0077] The reliability of the integrated energy supply system m can be expressed as:

[0078]

[0079] Among them, R m (demand,n) represents the reliability of a comprehensive energy supply system m with a system energy demand of demand. The energy demand of the transition system is indicated as Transition reliability of a transition integrated power supply system with a total number of n-1 multi-energy coupling elements. This represents the output power of the multi-energy coupling element n in the integrated energy supply system m under state b. This represents the output power of the multi-energy coupling element n in the integrated energy supply system m, considering energy type v under state b. This represents the probability of a multi-energy coupling element n in state b within an integrated energy supply system m. This represents the energy conversion capability of a multi-energy coupling element n in a comprehensive energy supply system m, under state b, to transform energy type a in the initial input energy into energy type v in the output power. The initial input energy for a comprehensive energy supply system considering energy type a.

[0080] In the aforementioned reliability detection method, once the sum of the output power of any number of multi-energy coupled components in the transition integrated power supply system under any energy type is greater than or equal to the system energy demand, the transition reliability is equal to 1, and subsequent transition reliability calculations cease. Then, the sum of the output power of the remaining component combinations is compared with the system energy demand. Simultaneously, the number of multi-energy coupled components corresponding to the transition reliability increases from 1 to n, ensuring that every multi-energy coupled component combination whose sum of output power is less than the system energy demand is traversed.

[0081] Compared to traditional reliability assessments that cover every output power, the reliability testing method proposed in this invention takes a reverse approach, focusing on multi-energy coupling component combinations where the output power is less than the system's energy demand. When the system's energy demand is low, the number of multi-energy coupling component combinations with output power less than the system's energy demand will be less than the number of multi-energy coupling component combinations with output power greater than or equal to the system's energy demand, thereby shortening the reliability testing time.

[0082] The reliability of integrated energy supply systems composed of different numbers of cogeneration units connected in parallel was tested below. During the experiment, each cogeneration unit had three performance parameters: heat, electricity, and gas. Each cogeneration unit had six states. Table 1 shows the efficiency comparison between the proposed method and the traditional method for integrated energy supply systems composed of 20, 30, and 40 cogeneration unit components connected in parallel. As shown in Table 1, the method proposed in this invention significantly reduces the time required for reliability testing.

[0083] Table 1 compares the efficiency of the method proposed in this invention with that of traditional methods.

[0084]

[0085] This invention proposes a comprehensive energy supply system reliability testing device considering state-backward analysis, comprising:

[0086] The output power generation unit of the multi-energy coupling element is used to calculate the output power of each multi-energy coupling element in the integrated energy supply system under each state by utilizing the initial input energy and the multi-energy conversion capability of the multi-energy coupling element.

[0087] Transitional integrated energy supply system construction unit, used to construct a transitional integrated energy supply system according to the number of multi-energy coupling elements designed;

[0088] Transition reliability calculation unit, used to calculate the transition reliability of the latest integrated transition energy supply system;

[0089] The system reliability detection unit is used to determine whether the reliability of the integrated energy supply system meets the requirements based on the transition reliability of the transition integrated energy supply system. If it does, the reliability detection is completed; otherwise, the number of multi-energy coupling elements in the transition integrated energy supply system is increased by one until the reliability of the integrated energy supply system meets the requirements or the number of multi-energy coupling elements in the latest transition integrated energy supply system exceeds the number of multi-energy coupling elements in the integrated energy supply system.

[0090] This invention proposes a computer device, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of a comprehensive power supply system reliability detection method that considers state back-end analysis.

[0091] This invention proposes a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of a comprehensive power supply system reliability detection method that considers state back-end analysis.

[0092] This invention proposes a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of a comprehensive power supply system reliability detection method that considers state back-end analysis.

Claims

1. A reliability testing method for a comprehensive energy supply system considering state-backward analysis, characterized in that, Includes the following steps: Step 1: Construct an energy conversion model for multi-energy coupling components in an integrated energy supply system; Step 2: Based on the energy conversion model of the multi-energy coupling element and the initial input energy of the integrated energy supply system, construct the output power model of the multi-energy coupling element; Step 3: Use the output power model of multi-energy coupling components to quickly test the reliability of the integrated energy supply system.

2. The method for reliability testing of a comprehensive energy supply system considering state reverse analysis according to claim 1, characterized in that, The first step is specifically as follows: Based on the number of states and energy types of the multi-energy coupling element, the energy conversion capability of the multi-energy coupling element in the integrated energy supply system m in different states to convert the initial input energy into each type of energy in the output power is constructed. The energy conversion model of the multi-energy coupling element is composed of the energy conversion capability of the multi-energy coupling element in different states to convert the initial input energy into each type of energy in the output power, v = 1, 2, ..., V, where V represents the number of energy types of the multi-energy coupling element.

3. The method for reliability testing of a comprehensive energy supply system considering state reverse analysis according to claim 1, characterized in that, The second step is as follows: 2.1) Multiply the energy conversion capability of the multi-energy coupling element in each state of converting the initial input energy into output power by the initial input energy of the integrated energy supply system to obtain the output power of the multi-energy coupling element considering each energy type in each state. Then, iterate through the energy conversion capabilities of all energy types in that state to convert the initial input energy into output power to obtain the output power of the multi-energy coupling element considering all energy types in that state. 2.2) Change the state of the multi-energy coupling element and repeat 2.1) until the output power of the multi-energy coupling element under different states considering all energy types is calculated and obtained, thereby obtaining the output power model of the multi-energy coupling element.

4. The method for reliability testing of a comprehensive energy supply system considering state reverse analysis according to claim 1, characterized in that, The third step is specifically as follows: 3.1) Construct a transition integrated power supply system consisting of a multi-energy coupling element, and calculate the transition reliability of the transition integrated power supply system; if the transition reliability of the transition integrated power supply system is greater than or equal to the system reliability threshold, then the reliability of the integrated power supply system meets the requirements; otherwise, proceed to 3.2). 3.2) Increase the number of multi-energy coupling elements in the current transition integrated energy supply system by one to form a new transition integrated energy supply system, and then calculate the transition reliability of the latest transition integrated energy supply system; 3.3) If the current transition reliability of the integrated energy supply system is greater than or equal to the system reliability threshold, then the reliability of the integrated energy supply system meets the requirements; otherwise, proceed to 3.2). If the number of multi-energy coupling elements in the latest transition integrated energy supply system is greater than the number of multi-energy coupling elements in the integrated energy supply system, then the reliability of the integrated energy supply system does not meet the requirements, and the reliability test of the integrated energy supply system is completed.

5. A reliability testing device for an integrated energy supply system considering state-backward analysis, characterized in that, include: The output power generation unit of the multi-energy coupling element is used to calculate the output power of each multi-energy coupling element in the integrated energy supply system under each state by utilizing the initial input energy and the multi-energy conversion capability of the multi-energy coupling element. Transitional integrated energy supply system construction unit, used to construct a transitional integrated energy supply system according to the number of multi-energy coupling elements designed; Transition reliability calculation unit, used to calculate the transition reliability of the latest integrated transition energy supply system; The system reliability detection unit is used to determine whether the reliability of the integrated energy supply system meets the requirements based on the transition reliability of the transition integrated energy supply system. If it does, the reliability detection is completed; otherwise, the number of multi-energy coupling elements in the transition integrated energy supply system is increased by one until the reliability of the integrated energy supply system meets the requirements or the number of multi-energy coupling elements in the latest transition integrated energy supply system exceeds the number of multi-energy coupling elements in the integrated energy supply system.

6. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the integrated power supply system reliability detection method considering state back-end analysis as described in any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the integrated power supply system reliability detection method considering state reverse analysis as described in any one of claims 1 to 4.

8. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the steps of the integrated power supply system reliability detection method considering state back-end analysis as described in any one of claims 1 to 4.

Images