Comprehensive energy system energy supply recovery method and system considering demand response compensation evaluation

Abstract

The invention discloses an integrated energy system energy supply recovery method and system considering demand response compensation evaluation. The method comprises the following steps: evaluating reducible energy consumption load compensation of each partition in different energy supply recovery schemes; the energy supply recovery net income of each subarea is formed by utilizing the income and the cost of each subarea in different energy supply recovery schemes, the energy consumption load compensation evaluation value, the transportation cost of mobile energy and the risk cost; a system energy supply recovery optimization module is established, an upper layer model determines a partition scheme by taking the maximum sum of energy supply recovery net earnings of all partitions as a target, and the partition scheme is optimized according to mobile energy real-time scheduling; the lower layer model re-evaluates the reducible energy consumption load compensation of each partition after optimization in different energy supply recovery schemes based on the partition optimization scheme, and determines the energy supply recovery scheme of each partition by taking the maximum energy supply recovery net income of each partition after updating as the target; and the optimal partitions of the integrated energy system and the energy supply recovery scheme of each optimal partition are obtained through iteration, and energy supply recovery considering demand response compensation evaluation is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of integrated energy demand response, and specifically, relates to an energy supply recovery method and system for an electrical integrated energy system taking into account integrated load demand response compensation evaluation. Background Art

[0002] With the changes in energy demand and energy structure, the integrated energy system (IES) has become the main body to meet user needs and ensure energy supply. The integrated energy system is usually based on electricity, with multiple energy sources coordinated, covering multiple energy forms such as electricity, gas, cold and heat, and the energy networks are closely coupled. However, the integrated energy system also faces problems such as flexibility during operation and stability after disasters. Demand-side response is an effective way to participate in grid interaction. Demand-side response usually refers to the power department taking various incentive and subsidy measures to stimulate the initiative of users to participate, changing users' electricity consumption behavior by increasing or decreasing electricity load, and promoting the dynamic balance of system supply and demand. According to the different classification standards of current demand response mechanisms, demand response mechanisms can be divided into two categories: guidance methods and evaluation methods of users' contributions to the system. Among them, guidance methods can be divided into electricity price type and incentive type. The electricity price type response effect depends on the formulation of electricity prices and has a certain degree of unpredictability. Incentive demand response does not involve the formulation of electricity prices. It can mobilize the enthusiasm of a large number of users through incentive compensation and has the advantages of strong response ability and fast response speed. In summary, demand response, as a form of flexible participation on the load side, can effectively enhance the stability of the system.

[0003] In the existing technology, most of the demand response aims to minimize the system operation cost, formulate a comprehensive demand response method for multi-energy systems, and improve the reliability of system operation, but does not consider factors such as the reducibility of the contracted demand response load affected by the power outage scenario and the recovery process, and the system recovery margin, and does not involve the comprehensive load demand response compensation evaluation method and its effect in the recovery scenario. Moreover, the current demand response usually provides auxiliary services such as peak shaving or standby for the system under normal operation, and whether it is a scheduled or real-time demand response service, it usually uses a preset fixed unit capacity compensation price to participate in the operation. Summary of the invention

[0004] In order to address the deficiencies in the prior art, the present invention provides an electrical integrated energy system energy supply recovery method and system taking into account comprehensive load demand response compensation evaluation, which realizes the demand response compensation evaluation during the power outage recovery process, and solves the evaluation of the reducible capacity of the demand response electric load affected by the power outage scenario and the recovery process, the system recovery margin, etc. The evaluation results characterize the urgency of the demand response during the system recovery process, which is conducive to timely collection of measures to effectively improve the stability of the system.

[0005] The present invention adopts the following technical solution.

[0006] The present invention proposes a comprehensive energy system energy supply recovery method taking into account demand response compensation evaluation, wherein the system's reducible energy loads include: reducible electricity loads and reducible gas loads; including: A unit capacity compensation cost model for reducible energy load is established to evaluate the reducible energy load compensation for each partition in the system in different energy supply restoration schemes; the net energy supply restoration benefit of each partition is constructed by using the benefits, costs, reducible energy load compensation evaluation values, transportation costs of mobile energy, and risk costs of each partition in different energy supply restoration schemes; a system energy supply restoration optimization module is established based on a two-layer model structure; the upper model determines the zoning scheme with the goal of maximizing the sum of the net energy supply restoration benefits of all partitions, and optimizes the zoning scheme according to the real-time scheduling of mobile energy; the lower model, based on the optimized zoning scheme, uses the unit capacity compensation cost model for reducible energy load to re-evaluate the reducible energy load compensation for each optimized partition in different energy supply restoration schemes, and determines the energy supply restoration scheme for each partition with the goal of maximizing the updated net energy supply restoration benefit for each partition; the lower model feeds back the updated net energy supply restoration benefit of each partition to the upper model; through multiple iterations, the optimal zoning of the integrated energy system and the energy supply restoration scheme of each optimal partition are obtained.

[0007] Preferably, data on the power load that can be reduced are collected to determine the proportion and reduction rate of the power load that can be reduced, and to determine the cumulative number of reductions and the cumulative proportion of reductions of the power load that can be reduced at each node in the system; data on distributed power sources are collected to determine the stability of the output forecast value of the distributed power sources; data on power loads and data on distributed power sources are collected and used to determine the adequacy of restored energy supply in the area to be restored; a unit capacity compensation cost model for the power load that can be reduced is established by using the proportion and reduction rate of the power load that can be reduced, the cumulative number of reductions and the cumulative proportion of reductions of the power load that can be reduced at each node in the system, the stability of the output forecast value of the distributed power sources, and the adequacy of restored power supply in the area to be restored; Among them, the data on the electricity load that can be reduced include: reduction amount, rated power, and power.

[0008] Preferably, the proportion of power load can be reduced to satisfy the following relationship:

[0009] In the formula, For the system The proportion of electricity load that can be reduced at any time, the value range is [0,1], is the total number of electrical nodes, For Node Rated power of the electrical load; For Node Department The rated power of the power load can be reduced at any time; The reduction rate of the power load can be reduced to meet the following relationship:

[0010] In the formula, For the system The reduction rate of the power load that can be reduced at any time, the value range is [0,1], and 1 means All the power loads that can be reduced are operating normally at all times, and 0 means All the electricity loads that can be reduced are shut down at all times; For Node Department The power of the electrical load can be reduced at any time; The cumulative reduction times of power load can be reduced, satisfying the following relationship:

[0011] In the formula, For Node Department The cumulative number of times the power load can be reduced at any time. ; is a symbolic function; is the evaluation time step of the cumulative reduction times of the electricity load that can be reduced; For Node Department The amount of reduction in electricity load that can be reduced at any time; The observation interval of the cumulative reduction times of the power load that can be reduced is the starting recovery time of the area to be restored in the system. To the set evaluation end time ; The cumulative reduction ratio of the power load that can be reduced satisfies the following relationship:

[0012] In the formula, For Node Department The power load can be reduced within the interval The cumulative reduction ratio is in the range of [0,1]. 1 means that the power load can be reduced within the interval All cuts within 0 means that the power load can be reduced within the range There are no cuts within; For interval The number of time periods within For Node Department The reduction rate of electricity load can be reduced during different time periods.

[0013] Preferably, the data of the distributed power source include: rated power and output prediction value; The stability of the output prediction value of distributed power generation satisfies the following relationship:

[0014] In the formula, For the distributed power supply in the system The stability of the output prediction value at each moment, with a value range of [0,1], where 1 indicates that the output prediction value is constant, and 0 indicates that the output prediction value fluctuates; is the evaluation time step of the stability of the output prediction value; For Time to the set evaluation end time The total number of time periods between is the time period serial number; For Node Distributed power sources at Output forecast value at the time; For Node The rated power output of the distributed power source at the location; It is the node set corresponding to the distributed power source in the system.

[0015] Preferably, the data of the power load includes: the rated power of the power load, the power of the power load after power supply is restored; The adequacy of power supply restoration in the area to be restored in the system satisfies the following relationship:

[0016] In the formula, The adequacy of power supply restoration in the area to be restored in the system, ,and The smaller the value is, the lower the adequacy of power supply to be restored in the area to be restored. The larger the value is, the higher the adequacy of power supply restoration in the area to be restored. For Node Department The power output of distributed power sources at all times; For Node Department The power of the electrical load that is restored at all times.

[0017] Preferably, the unit capacity compensation cost model for reducing the power load satisfies the following relationship:

[0018] In the formula, For Node Department Unit capacity compensation fee for reducing electricity load at any time; For Node The quotation when the electricity load that can be reduced is reduced all at once; is the proportion of distributed power sources in the system, and its value range is [0,1]. A value of 0 indicates that there is no distributed power generation in the system; For Node At the set assessment end time The cumulative number of times the power load can be reduced.

[0019] Preferably, data on the gas load that can be reduced is collected to determine the proportion and reduction rate of the gas load that can be reduced, and to determine the cumulative reduction times and cumulative reduction proportion of the gas load that can be reduced at each node in the system; data on the gas load in the system and data on the gas source in the system are collected and used to determine the adequacy of the gas supply to be restored in the area to be restored; A unit capacity compensation cost model for the reducible gas load is established using the proportion and reduction rate of the reducible gas load, the cumulative reduction times and cumulative reduction proportion of the reducible gas load at each node in the system, and the adequacy of gas supply restoration in the area to be restored. Among them, the data on gas load that can be reduced include: reduction amount, rated power, and power.

[0020] Preferably, the proportion of gas load can be reduced to satisfy the following relationship:

[0021] In the formula, For the system The percentage of gas load that can be reduced at any time, the value range is [0,1], is the total number of gas nodes, For Node Rated power of gas load; For Node Department The rated power of the gas load can be reduced at any time; The reduction rate of gas load can be reduced to meet the following relationship:

[0022] In the formula, For the system The reduction rate of gas load that can be reduced at any time. The value range is [0,1], where 1 means All the gas loads that can be reduced in the system are operating normally at the moment, and 0 means All the gas loads that can be reduced in the system are shut down at all times; For Node Department The power of gas load can be reduced at any time; The cumulative reduction times of gas load reduction at each node in the system can satisfy the following relationship:

[0023] In the formula, For Node Department The cumulative reduction times of gas load reduction can be reduced at any time. ; is a symbolic function; is the evaluation time step of the cumulative reduction times of the gas load that can be reduced; For Node Department The amount of reduction in gas load that can be reduced at any time; The observation interval of the cumulative reduction times of the gas load that can be reduced is the starting recovery time of the area to be restored in the system. To the set evaluation end time ; The cumulative reduction ratio of gas load that can be reduced at each node in the system satisfies the following relationship:

[0024] In the formula, For Node Department Time can reduce gas load in the interval The cumulative reduction ratio is in the range of [0,1]. 1 means that the gas load can be reduced within the interval All cuts within 0 means that the gas load can be reduced within the range There are no cuts within; For interval The number of time periods within For Node Department The reduction rate of gas load that can be reduced during the period; The adequacy of gas supply restoration in the area to be restored in the system satisfies the following relationship:

[0025] In the formula, To restore the gas supply adequacy of the area to be restored in the system, ,and The smaller the value is, the lower the gas supply adequacy of the area to be restored is. The larger the value is, the higher the gas supply adequacy of the area to be restored is. For Node Department The power output of distributed power sources at all times; For Node Department The power of the electrical load that is restored at all times; It is the node set corresponding to the gas source in the system.

[0026] Preferably, the unit capacity compensation cost model for reducing gas load satisfies the following relationship:

[0027] In the formula, For Node Department Unit capacity compensation fee for reducing gas load at any time; For Node The quotation when the gas load that can be reduced is reduced all at once; For Node At the set assessment end time The cumulative number of reductions that can reduce gas load.

[0028] Preferably, based on the unit capacity compensation cost model of the reducible electricity load, the compensation for the reducible electricity load in each zone within the system in different energy supply restoration schemes is evaluated; based on the unit capacity compensation cost model of the reducible gas load, the compensation for the reducible gas load in each zone within the system in different energy supply restoration schemes is evaluated.

[0029] Preferably, the power supply restoration scheme The compensation cost for the reduced power load in this step satisfies the following relationship:

[0030] In the formula, The power restoration plan The compensation for the reduced electricity load in the next step is The power restoration plan The moment when the power supply of the load in the step is restored, and The power restoration plan is Step The unit capacity compensation cost of electricity load and the user's compensation capacity can be reduced at any time. The evaluation end time is set.

[0031] Preferably, the first step of the gas supply recovery plan is The compensation cost for the reduced gas load in this step satisfies the following relationship:

[0032] In the formula, The power restoration plan The compensation for the reduced gas load in the step The plan for restoring gas supply When the gas load in the step resumes gas supply, and The gas supply restoration plan is Step The unit capacity compensation cost of gas load and the user's compensation capacity can be reduced at any time. The evaluation end time is set.

[0033] Preferably, in each zone, the profit of the power supply restoration plan, the power supply cost, the compensation for the reduced power load, the transportation cost of the mobile power source and the risk cost constitute the net profit of the power supply restoration plan; the profit of the gas supply restoration plan, the gas supply cost, the compensation for the reduced gas load, the transportation cost of the mobile gas source and the risk cost constitute the net profit of the gas supply restoration plan.

[0034] Preferably, the sum of the net benefits of the power supply restoration scheme and the net benefits of the gas supply restoration scheme within a zone is maximized as the optimization objective function of the lower model, satisfying the following relationship:

[0035] In the formula, Partition the system The sum of the net benefits of the power supply restoration plan and the gas supply restoration plan, and Partitions in the same decision period The number of steps in the power supply restoration plan and the number of steps in the gas supply restoration plan; and The power restoration plan is The benefits of restoring power supply to the electric load in step 1 and the benefits of restoring gas supply in step 2 The benefits of gas load restoration during the step; and The power restoration plan is The power supply cost of the power supply in step 1 and the gas supply restoration plan in step 2 The gas supply cost of the gas source in the step; and The power restoration plan is The compensation for the reduced electricity load and the gas supply restoration plan in the first step The compensation cost of reducing gas load can be reduced in the next step; and The power restoration plan is The transportation cost of the mobile power supply and the gas supply restoration plan in step 1 The transportation cost of the mobile gas source in the step; and The power restoration plan is The risk cost of electricity load in step 1 and the gas supply restoration plan in step 2 The risk cost of gas load in the next step.

[0036] Preferably, the power supply restoration scheme The risk cost of the electric load in the step satisfies the following relationship:

[0037] In the formula, The power restoration plan Step The unit capacity recovery risk of the electric load at each moment; , The power restoration plan is The unit recovery income and recovery amount of the electric load restored step by step at time t; Gas supply restoration plan The risk cost of gas load in the step satisfies the following relationship:

[0038] In the formula, The plan for restoring gas supply Step Unit capacity recovery risk of gas load at each moment; , The gas supply restoration plan is The unit recovery benefit and recovery amount of the gas load restored in the first step at time t.

[0039] Preferably, the constraints of the lower objective function include: power supply system operation and demand response constraints, gas supply system operation and demand response constraints.

[0040] Preferably, the sum of the net benefits of the power supply restoration scheme and the gas supply restoration scheme in each partition of the system is the maximum optimization objective function of the upper model, satisfying the following relationship:

[0041] In the formula, the net benefit of restoring energy to the system; is the total number of partitions containing power loads, each partition containing power loads has at least one power supply in V / F control mode; Partition the system The sum of the net income from the restoration of power supply by the internal power distribution system and the net income from the restoration of gas supply by the gas distribution system, .

[0042] Preferably, the constraints of the upper objective function include: radial topology constraints, system operation constraints, mobile power supply constraints and mobile gas source constraints.

[0043] Preferably, when solving the lower model, a delay value characterizing the delay characteristics of gas load transmission is set to satisfy the following relationship:

[0044] In the formula, is the delay value, , Natural gas pipelines within the region length and diameter, for The gas load supply at the moment, For gas to flow from the previous pipeline into the natural gas pipeline The delay value at the inlet end of the pipeline is that gas flows into the natural gas pipeline from multiple previous pipelines. At the entrance of Take the average of the delay values.

[0045] The present invention also proposes an integrated energy system energy supply recovery system taking into account demand response compensation evaluation, comprising: The compensation evaluation module is used to establish a unit capacity compensation cost model for the energy load that can be reduced, so as to evaluate the compensation for the energy load that can be reduced in each partition of the system in different energy restoration schemes; The energy restoration net benefit module is used to utilize the benefits, costs, evaluation values ​​of energy load compensation that can be reduced, transportation costs of mobile energy, and risk costs of each zone in different energy restoration plans to form the energy restoration net benefit of each zone; The zoning and energy supply recovery optimization module is used for the system energy supply recovery optimization module based on the two-layer model structure; the upper model determines the zoning scheme with the goal of maximizing the sum of the net benefits of energy supply recovery in all zones, and optimizes the zoning scheme according to the real-time scheduling of mobile energy; the lower model, based on the optimized zoning scheme, uses the unit capacity compensation cost model of the reducible energy load to re-evaluate the compensation for the reducible energy load of each optimized zone in different energy supply recovery schemes, and determines the energy supply recovery scheme of each zone with the goal of maximizing the updated net benefit of energy supply recovery in each zone; the lower model feeds back the updated net benefit of energy supply recovery of each zone to the upper model; through multiple iterations, the optimal zoning of the integrated energy system and the energy supply recovery scheme of each optimal zone are obtained.

[0046] The present invention is also a terminal, comprising a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to execute the steps of the method.

[0047] The present invention is also a computer-readable storage medium having a computer program stored thereon, which implements the steps of the method when executed by a processor.

[0048] The beneficial effect of the present invention is that, compared with the prior art, at least the present invention proposes a demand response for the power supply restoration process, taking into account the large-scale access of new energy to the distribution system at this stage, and taking into account various factors affecting the restoration of power supply on the basis of traditional demand response, thereby obtaining a unit capacity compensation cost model for the power load that can be reduced. The present invention comprehensively considers the proportion of the power load that can be reduced, the reduction rate, the cumulative number of reductions, and the cumulative reduction ratio to characterize the actual situation of the cumulative response of the power load that can be reduced in the power supply restoration process under the actual power outage scenario, and reflects the user's own demand response capability and the user's actual willingness to participate; at the same time, the stability of the output forecast value of the distributed power source and the adequacy of the restored power supply in the power supply area to be restored are introduced to characterize the influence of the external environment of the system. The unit capacity compensation cost model for the power load that can be reduced is established, which covers the factors such as the reducibility of the contracted demand response power load affected by the power outage scenario and the restoration process, and the system restoration adequacy, and can characterize the effect of the comprehensive load demand response in the restoration scenario.

[0049] The objective function established by the two-layer model includes a compensation evaluation represented by compensation costs. When facing the energy supply restoration scenario, the effects of different energy supply restoration schemes under the demand response compensation evaluation are fully considered; and the present invention not only proposes an energy supply restoration scheme under the optimal net profit of each partition (the recovery time, recovery amount, response time and response amount of the load in each partition, etc.), but also gives the optimal partitioning scheme to support each partition to achieve the best energy supply restoration effect, so that the system optimal partitioning scheme and the optimal energy supply restoration scheme of each partition together constitute a comprehensive energy system energy supply restoration scheme, which not only meets the coordinated management of the status of each partition from the perspective of the entire system and meets the mobile energy dispatching instructions issued in real time by the superior dispatcher, but also refines the energy supply restoration implementation steps in each partition. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a flow chart of the integrated energy system energy supply restoration method taking into account demand response compensation evaluation proposed by the present invention; Figure 2 is a schematic diagram of the structure of a two-layer optimization model in an embodiment of the present invention; Figure 3 It is a flow chart of iterative solution of the lower layer model in an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only embodiments of a part of the present invention, rather than all embodiments. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0052] The present invention proposes an energy supply recovery method for an electric integrated energy system taking into account comprehensive load demand response compensation evaluation, wherein the demand response is embodied as a reducible energy load. In an embodiment, the incentive-type demand response electricity participates in grid interaction in the form of a reducible power load; like Figure 1 As shown, the method includes: Step 1: Establish a unit capacity compensation cost model for the reducible energy load to evaluate the reducible energy load compensation for each partition in the system under different energy restoration schemes.

[0053] The reducible energy load of the electrical integrated energy system includes: reducible electricity load and reducible gas load; therefore, step 1 includes: Step 1.1, collect data on the power load that can be reduced to determine the proportion and reduction rate of the power load that can be reduced, and determine the cumulative reduction times and cumulative reduction ratio of the power load that can be reduced at each node in the system; collect data on distributed power sources to determine the stability of the distributed power output forecast value; collect and use the power load data and distributed power source data to determine the adequacy of the restored power supply in the power supply area to be restored; use the proportion and reduction rate of the power load that can be reduced, the cumulative reduction times and cumulative reduction ratio of the power load that can be reduced at each node in the system, the stability of the distributed power output forecast value, and the adequacy of the restored power supply in the power supply area to be restored to establish a unit capacity compensation cost model for the power load that can be reduced; Specifically, step 1.1 includes: Step 1.1.1, collecting data on the power load that can be reduced in the system, including but not limited to: the reduction amount of the power load that can be reduced and the rated power of the power load that can be reduced; The data for reducing power load satisfies the following relationship:

[0054]

[0055] In the formula, For Node Department The current load reduction status, 1 means it is reduced, 0 means it is not reduced; For Node Department The amount of reduction in electricity load that can be reduced at any time; For Node Department The rated power of the power load can be reduced at any time; For Node Department The reduction rate of electricity load that can be reduced at any time; In the embodiment, the node Department The hourly electricity load is a contracted electricity load and is a non-restrictive and preferred option; Step 1.1.2: The proportion of power load that can be reduced in the system satisfies the following relationship:

[0056] In the formula, For the system The proportion of electricity load that can be reduced at any time, the value range is [0,1], is the total number of electrical nodes, For Node Rated power of the electrical load; In the embodiment, the proportion of curtailable power loads is used to represent the proportion of the rated power of all curtailable power loads for which demand response agreements have been signed in the system to the rated power of all power loads; Step 1.1.3, collecting data on the power load that can be reduced in the system, including but not limited to: the power of the power load that can be reduced; The reduction rate of the power load that can be reduced in the system satisfies the following relationship:

[0057] In the formula, For the system The reduction rate of the power load that can be reduced at any time, the value range is [0,1], and 1 means All the power loads that can be reduced in the system are operating normally at the moment, and 0 means All the power loads that can be reduced in the system are shut down at all times; For Node Department The power of the electrical load can be reduced at any time; In the embodiment, the reduction rate of the power load that can be reduced in the system is used to represent the proportion of the actual power load that can be reduced in the system to the rated power of all the power loads that can be reduced for which the demand response agreement has been signed; Step 1.1.4: The cumulative number of times that each node in the system can reduce the power load satisfies the following relationship:

[0058] In the formula, For Node Department The cumulative number of times the power load can be reduced at any time. ; is a symbolic function; is the evaluation time step of the cumulative reduction times of the electricity load that can be reduced; For Node Department The amount of reduction in electricity load that can be reduced at any time; In the embodiment, the node Department The time-reducible power load is a contracted reducible power load and is a non-restrictive and better choice; The observation interval of the cumulative reduction times of the power load that can be reduced is the starting recovery time of the area to be restored in the system To the set evaluation end time ; Step 1.1.5: The cumulative reduction ratio of the power load that can be reduced at each node in the system satisfies the following relationship:

[0059] In the formula, For Node Department The power load can be reduced within the interval The cumulative reduction ratio is in the range of [0,1]. 1 means that the power load can be reduced within the interval All cuts within 0 means that the power load can be reduced within the range There are no cuts within; For interval The number of time periods within For Node Department The reduction rate of electricity load that can be reduced during the period; In the embodiment, the cumulative reduction ratio of the reducible power load is used to characterize the duration of power supply after the reducible power load is reduced and the impact of each reduction amount; Step 1.1.6, collecting data of distributed power sources in the system, including but not limited to: rated power and output forecast value of distributed power sources; The stability of the output prediction value of distributed power generation satisfies the following relationship:

[0060] In the formula, For the distributed power supply in the system The stability of the output prediction value at each moment, with a value range of [0,1], where 1 indicates that the output prediction value is constant, and 0 indicates that the output prediction value fluctuates; is the evaluation time step of the stability of the output prediction value; For Time to the set evaluation end time The total number of time periods between is the time period serial number; For Node Distributed power sources at Output forecast value at the time; For Node The rated power output of the distributed power source at the location; is the node set corresponding to the distributed power source in the system; In the embodiment, the stability of the output prediction value of the distributed power source is used to characterize the output fluctuation degree of the new energy unit in the system within the observation interval; Step 1.1.7, collecting data of the power load in the system, including but not limited to: the rated power of the power load and the power of the power load after power supply is restored; The adequacy of power supply restoration in the area to be restored in the system satisfies the following relationship:

[0061] In the formula, The adequacy of power supply restoration in the area to be restored in the system, ,and The smaller the value is, the lower the adequacy of power supply to be restored in the area to be restored. The larger the value is, the higher the adequacy of power supply restoration in the area to be restored. For Node Department The power output of distributed power sources at all times; For Node Department The power of the electrical load that is restored at all times; In the embodiment, the adequacy of power supply restoration in the area to be restored in the system is used to characterize the ratio between the available power of the new energy units with power supply capacity in the area to be restored in the system and the power demand of the power load to be restored; Step 1.1.8, establish a unit capacity compensation cost model that can reduce electricity load, satisfying the following relationship:

[0062] In the formula, For Node Department Unit capacity compensation fee for reducing electricity load at any time; For Node The quotation when the electricity load that can be reduced is reduced all at once; is the proportion of distributed power sources in the system, and its value range is [0,1]. A value of 0 indicates that there is no distributed power generation in the system; For the system The proportion of electricity load can be reduced at any time. For the system The reduction rate of the electricity load that can be reduced at any time; due to the intermittent and volatile nature of renewable energy output, which will affect the available capacity of the system, and thus affect the recovery capacity of the system power supply side, in some power outage scenarios and during the power supply restoration process, even if the power load has signed a demand response agreement, it will not have the ability to reduce power due to its outage. Only the contracted power load that can be reduced in normal operation is the actual power load that can be reduced. Therefore, the use of and right Make corrections to obtain a quotation that matches the system power supply side recovery capability and the actual load that can be reduced; For the distributed power supply in the system The stability of the output forecast value at each moment; the output volatility of new energy is also a factor that affects the power supply restoration process, so right Make corrections to obtain quotes that match the output volatility of renewable energy sources; The energy supply adequacy of the area to be restored in the system; therefore, the use right Make corrections to obtain a quotation that matches the adequacy of power supply restored by the power grid in the area to be restored; For Node Department The cumulative number of times the power load can be reduced at any time; For Node At the set assessment end time The cumulative number of times the electricity load can be reduced; For Node Department The cumulative reduction ratio of electricity load that can be reduced at any time; The present invention proposes a demand response for the power supply restoration process, taking into account the large-scale access of new energy to the distribution system at this stage, and taking into account various factors affecting the restoration of power supply on the basis of traditional demand response, so as to obtain a unit capacity compensation cost model for the power load that can be reduced. The present invention comprehensively considers the proportion of the power load that can be reduced, the reduction rate, the cumulative number of reductions, and the cumulative reduction ratio to characterize the actual situation of the cumulative response of the power load that can be reduced in the power supply restoration process under the actual power outage scenario, and reflects the user's own demand response capabilities and the user's actual willingness to participate; at the same time, the stability of the output forecast value of the distributed power source and the adequacy of the restored power supply in the power supply area to be restored are introduced to characterize the external environmental impact of the system. The unit capacity compensation cost model for the power load that can be reduced is established, which covers the factors such as the reducible capacity of the contracted demand response power load affected by the power outage scenario and the restoration process, and the system restoration adequacy, and can characterize the effect of the comprehensive load demand response in the restoration scenario.

[0063] Step 1.2, collect data on the gas load that can be reduced in the system to determine the proportion and reduction rate of the gas load that can be reduced in the system, and determine the cumulative reduction times and cumulative reduction ratio of the gas load that can be reduced at each node in the system; collect and use the data on the gas load in the system and the data on the gas source in the system to determine the adequacy of gas supply restoration in the gas supply area to be restored; use the proportion and reduction rate of the gas load that can be reduced in the system, the cumulative reduction times and cumulative reduction ratio of the gas load that can be reduced at each node in the system, and the adequacy of gas supply restoration in the gas supply area to be restored to establish a unit capacity compensation cost model for the gas load that can be reduced; Specifically, step 2 includes: Step 1.2.1, collecting data on the gas load that can be reduced in the system, including but not limited to: the reduction amount of the gas load that can be reduced, the rated power of the gas load that can be reduced, and the power of the gas load that can be reduced; The data of gas load reduction can satisfy the following relationship:

[0064]

[0065] In the formula, For Node Department The gas load reduction status at the moment, 1 indicates reduction, 0 indicates no reduction; For Node Department The amount of reduction in gas load that can be reduced at any time; For Node Department The rated power of the gas load can be reduced at any time; For Node Department The reduction rate of gas load that can be reduced at any time; Step 1.2.2: The proportion of gas load that can be reduced in the system satisfies the following relationship:

[0066] In the formula, For the system The percentage of gas load that can be reduced at any time, the value range is [0,1], is the total number of gas nodes, For Node Rated power of gas load; For Node Department The rated power of the gas load can be reduced at any time; Step 1.2.3: The reduction rate of the gas load that can be reduced in the system satisfies the following relationship:

[0067] In the formula, For the system The reduction rate of gas load that can be reduced at any time. The value range is [0,1], where 1 means All the gas loads that can be reduced in the system are operating normally at the moment, and 0 means All the gas loads that can be reduced in the system are shut down at all times; For Node Department The power of gas load can be reduced at any time; Step 1.2.4: The cumulative reduction times of gas load that can be reduced at each node in the system shall satisfy the following relationship:

[0068] In the formula, For Node Department The cumulative reduction times of gas load reduction can be reduced at any time. ; is a symbolic function; is the evaluation time step of the cumulative reduction times of the gas load that can be reduced; For Node Department The amount of reduction in gas load that can be reduced at any time; The observation interval of the cumulative reduction times of the gas load that can be reduced is the starting recovery time of the area to be restored in the system. To the set evaluation end time ; Step 1.2.5: The cumulative reduction ratio of gas load that can be reduced at each node in the system satisfies the following relationship:

[0069] In the formula, For Node Department Time can reduce gas load in the interval The cumulative reduction ratio is in the range of [0,1]. 1 means that the gas load can be reduced within the interval All cuts within 0 means that the gas load can be reduced within the range There are no cuts within; For interval The number of time periods within For Node Department The reduction rate of gas load that can be reduced during the period; Step 1.2.6, the adequacy of the restored gas supply in the area to be restored in the system satisfies the following relationship:

[0070] In the formula, To restore the gas supply adequacy of the area to be restored in the system, ,and The smaller the value is, the lower the gas supply adequacy of the area to be restored is. The larger the value is, the higher the gas supply adequacy of the area to be restored is. For Node Department The power output of distributed power sources at all times; For Node Department The power of the electrical load that is restored at all times; is the node set corresponding to the gas source in the system; Step 1.2.7, the unit capacity compensation cost model of the gas load reduction can satisfy the following relationship:

[0071] In the formula, For Node Department Unit capacity compensation fee for reducing gas load at any time; For Node The quotation when the gas load that can be reduced is reduced all at once; For Node At the set assessment end time The cumulative number of reductions that can reduce gas load.

[0072] The characteristics of the compensation cost model that can reduce gas load are consistent with the characteristics of the compensation cost model that can reduce electricity load.

[0073] For the system The proportion of gas load can be reduced at any time. For the system The reduction rate of the gas load that can be reduced at any time. In some gas outage scenarios and during the recovery process, even if the gas load has signed a demand response agreement, it will not have the ability to reduce due to its outage. Only the contracted gas load that can be reduced in normal operation is the actual gas load that can be reduced. Therefore, the use of and right Make corrections to obtain a quote that matches the actual curtailable gas load on the system; To restore the gas supply adequacy of the area to be restored in the system, right Make corrections to obtain a quotation that matches the adequacy of gas supply restoration in the area to be restored; The present invention proposes a demand response for the gas supply restoration process, taking into account the large-scale access of new energy to the distribution system at this stage, and taking into account various factors affecting the restoration of gas supply on the basis of traditional demand response, thereby obtaining a unit capacity compensation cost model for the gas load that can be reduced. The present invention comprehensively considers the proportion of gas load that can be reduced, the reduction rate, the cumulative number of reductions, and the cumulative reduction ratio to characterize the actual situation of the cumulative response of the gas load that can be reduced in the process of gas supply restoration under the actual gas outage scenario, and reflects the user's own demand response capabilities and the user's actual willingness to participate; at the same time, the smoothness of the output forecast value of the distributed power source and the adequacy of the restored energy supply in the gas supply area to be restored are introduced to characterize the impact of the external environment of the system. The unit capacity compensation cost model for the gas load that can be reduced is established, which covers the factors such as the reducible capacity of the contracted demand response gas load affected by the gas outage scenario and the restoration process, and the system restoration adequacy, and can characterize the effect of the comprehensive load demand response in the restoration scenario.

[0074] Step 1.3, based on the unit capacity compensation cost model of the reducible electricity load, evaluate the compensation for the reducible electricity load in each zone of the system in different energy restoration plans; based on the unit capacity compensation cost model of the reducible gas load, evaluate the compensation for the reducible gas load in each zone of the system in different energy restoration plans.

[0075] Evaluating the compensation for the reducible energy load of each zone in the system in different energy supply restoration plans includes: calculating the compensation cost for the reducible energy load of each zone in the system in different energy supply restoration plans.

[0076] The power restoration plan The compensation cost for the reduced power load in this step satisfies the following relationship:

[0077] In the formula, The power restoration plan The compensation for the reduced electricity load in the next step is The power restoration plan The moment when the power supply of the load in the step is restored, and The power restoration plan is Step The unit capacity compensation cost of electricity load and the user's compensation capacity can be reduced at any time. The evaluation end time is set.

[0078] Gas supply restoration plan The compensation cost for the reduced gas load in this step satisfies the following relationship:

[0079] In the formula, The power restoration plan The compensation for the reduced gas load in the step The plan for restoring gas supply When the gas load in the step resumes gas supply, and The gas supply restoration plan is Step The unit capacity compensation cost of gas load and the user's compensation capacity can be reduced at any time. The evaluation end time is set.

[0080] Step 2: Using the revenue, cost, evaluation value of reducible energy load compensation, transportation cost of mobile energy and risk cost of each zone in different energy restoration plans, the net revenue of energy restoration in each zone is constructed.

[0081] Specifically, within each zone, the net profit of the power supply restoration plan is composed of the revenue of the power supply restoration plan, the power supply cost, the compensation for the reduced power load, the transportation cost of the mobile power source, and the risk cost; the net profit of the gas supply restoration plan is composed of the revenue of the gas supply restoration plan, the gas supply cost, the compensation for the reduced gas load, the transportation cost of the mobile gas source, and the risk cost.

[0082] Step 3, based on the two-layer model structure, establish a system energy supply recovery optimization module; wherein, the upper model determines the zoning scheme with the goal of maximizing the sum of the net benefits of energy supply recovery in all zones, and optimizes the zoning scheme according to the real-time scheduling of mobile energy; the lower model, based on the optimized zoning scheme, uses the unit capacity compensation cost model of the reducible energy load to re-evaluate the compensation for the reducible energy load of each optimized zone in different energy supply recovery schemes, and determines the energy supply recovery scheme of each zone with the goal of maximizing the updated net benefit of energy supply recovery in each zone; the lower model feeds back the updated net benefit of energy supply recovery of each zone to the upper model; through multiple iterations, the optimal zoning of the integrated energy system and the energy supply recovery scheme of each optimal zone are obtained.

[0083] Specifically, step 3 includes: Step 3.1: The sum of the net benefits of the power supply restoration scheme and the gas supply restoration scheme within a zone is maximized as the optimization objective function of the lower model, satisfying the following relationship:

[0084] In the formula, and Partitions in the same decision period The number of steps in the power supply restoration plan and the number of steps in the gas supply restoration plan; and The power restoration plan is The benefits of restoring power supply to the electric load in step 1 and the benefits of restoring gas supply in step 2 The benefits of gas load restoration during the step; and The power restoration plan is The power supply cost of the power supply in step 1 and the gas supply restoration plan in step 2 The gas supply cost of the gas source in the step; and The power restoration plan is The compensation for the reduced electricity load and the gas supply restoration plan in the first step The compensation cost of reducing gas load can be reduced in the next step; and The power restoration plan is The transportation cost of the mobile power supply and the gas supply restoration plan in step 1 The transportation cost of the mobile gas source in the step; and The power restoration plan is The risk cost of electricity load in step 1 and the gas supply restoration plan in step 2 The risk cost of gas load in the next step.

[0085] Among them, the power restoration plan The risk cost of the electric load in the step satisfies the following relationship:

[0086] In the formula, The power restoration plan Step The unit capacity recovery risk of the electric load at each moment; , The power restoration plan is The unit recovery benefit and recovery amount of the electric load that is restored step by step at time t.

[0087] Gas supply restoration plan The risk cost of gas load in the step satisfies the following relationship:

[0088] In the formula, The plan for restoring gas supply Step Unit capacity recovery risk of gas load at each moment; , The gas supply restoration plan is The gas load of the step recovery is The unit recovery benefit and recovery amount at the moment.

[0089] Step 3.2, establishing the constraints of the lower objective function, including: power supply system operation and demand response constraints, gas supply system operation and demand response constraints; 1) Power supply system operation and demand response constraints For the lower objective function, the system power balance constraint needs to be adjusted, and the demand response load constraint must also be met to satisfy the following relationship:

[0090]

[0091]

[0092] In the formula, For partition A collection of powered nodes in a power distribution system; , They are Time Node The active and reactive response amounts of demand response loads that are reduced; For Node The maximum value of the cumulative reduction times of demand response electric load; , They are the nodes in the process of restoring power supply. The actual power load reduction is within the observation interval. Moment The duration of power supply after the first power cut and the lower limit of the duration, , For Node At the set assessment end time The cumulative number of times the electricity load can be reduced; 2) Gas supply system operation and demand response constraints In addition to adjusting the node flow balance constraints, GDS also needs to meet the demand response load constraints and satisfy the following relationship:

[0093]

[0094]

[0095] In the formula, is the set of gas-obtaining nodes of the gas supply system in partition a; for Time Node The demand side response amount of the load; For Node The maximum cumulative reduction times of the contracted demand response gas load; , They are the nodes in the recovery process. The actual gas load reduction is within the observation range. Moment The duration of gas supply after the first reduction and its lower limit, .

[0096] Step 3.3, obtain the net benefits of the power distribution system restoration plan and the gas distribution system restoration plan in each partition of the system, and take the maximum sum of net benefits as the upper objective function, satisfying the following relationship:

[0097] In the formula, the net benefit of restoring energy to the system; is the total number of partitions containing power loads, each partition containing power loads has at least one power supply in V / F control mode; Partition the system The sum of the net income from the restoration of power supply by the internal power distribution system and the net income from the restoration of gas supply by the gas distribution system, .

[0098] Step 3.4, establish the constraints of the upper objective function, including: radial topology constraints, system operation constraints, mobile power supply and mobile gas source constraints; 1) Radial topology constraints

[0099] In the formula, , are the number of nodes and lines in partition a respectively.

[0100] 2) System operation constraints

[0101]

[0102] In the formula, , Node The load flowing into the node The node set from which the electrical load flows out; , are the active power and reactive power injected by the distributed generation at node i respectively; , The mobile power source (MPS) is selected from the MPS candidate connection point Injected active and reactive power; , Slave nodes Flow to Node Active power and reactive power; , Slave nodes Flow to Node Active power and reactive power; , For Node Active power and reactive power recovered at , Node Inflow reactive load and slave node The set of nodes that outflow reactive loads;

[0103] In the formula, , Line Both end nodes , Voltage; , Line resistance and reactance.

[0104]

[0105] In the formula, , Node The lower limit and upper limit of the voltage at are respectively taken as 0.9 pu and 1.1 pu in the embodiment.

[0106]

[0107] In the formula, , Node Inflow gas load and slave node The node set of outflow gas load; The gas source is at the node The amount of gas injected; For mobile gas source (MGS, Mobile Gas Source) from MGS candidate connection point The amount of gas injected; For slave nodes Flow to Node The air flow rate; For slave nodes Flow to Node The air flow rate; For Node The restored air flow.

[0108]

[0109]

[0110] In the formula, , , are the pressure value, upper limit and lower limit of node m respectively; , They are the upper and lower limits of the mn flow rate in the pipe section respectively.

[0111] 3) Mobile power and mobile gas source constraints

[0112]

[0113]

[0114] In the formula, is the total number of MPS, is the total number of MGS; is the set of candidate MPS connection points in the power grid, It is the set of candidate MGS connection points in the gas network; , Mobile power supply Candidate connection points with MPS 、Gas source Candidate connection points with MGS The access status variable, 1 means access, 0 means no access; For mobile power The shortest transportation path from its storage location to its candidate connection point; For road section Length, It is the set of all radial paths in the transportation network.

[0115] In the embodiment, the transportation paths of the mobile power source and the mobile gas source are constrained to be open loops.

[0116] In step 3.5, the upper model determines the zoning scheme with the goal of maximizing the sum of the net benefits of energy restoration in all zones, and optimizes the zoning scheme according to the real-time scheduling of mobile energy; the lower model, based on the optimized zoning scheme, uses the unit capacity compensation cost model of the reducible energy load to re-evaluate the compensation for the optimized reducible energy load in different energy restoration schemes, and determines the energy restoration scheme for each zone with the goal of maximizing the updated net benefit of energy restoration in each zone; the lower model feeds back the updated net benefit of energy restoration in each zone to the upper model; through multiple iterations, the optimal zoning of the integrated energy system and the energy restoration scheme of each optimal zone are obtained.

[0117] In the present invention, Figure 2 As shown, the objective function established by the two-layer model includes a compensation evaluation represented by compensation costs. When facing the energy supply restoration scenario, the effects of different energy supply restoration schemes under the demand response compensation evaluation are fully considered; and the present invention not only proposes an energy supply restoration scheme under the optimal net profit of each partition (the recovery time, recovery amount, response time and response amount of the load in each partition, etc.), but also gives the optimal partitioning scheme to support each partition to achieve the best energy supply restoration effect, so that the system optimal partitioning scheme and the optimal energy supply restoration scheme of each partition together constitute a comprehensive energy system energy supply restoration scheme, which not only meets the overall management of the status of each partition from the perspective of the whole system and meets the mobile energy dispatching instructions issued in real time by the superior dispatcher, but also refines the energy supply restoration implementation steps in each partition.

[0118] When solving the lower-level model, the power supply restoration plan and the gas supply restoration plan are decoupled according to the gas load transmission delay characteristics in the integrated energy system, in combination with the iteration step size and iteration node control parameters; wherein the delay value characterizing the gas load transmission delay characteristics is set to satisfy the following relationship:

[0119] In the formula, is the delay value, , Natural gas pipelines within the region length and diameter, for The gas load supply at the moment, For gas to flow from the previous pipeline into the natural gas pipeline The delay value at the inlet end of the pipeline is that gas flows into the natural gas pipeline from multiple previous pipelines. At the entrance of Take the average of each delay value; like Figure 3 As shown, when the lower model starts to solve, the initialization partition parameters sent by the upper model are obtained. , , Observation time ; Determine the simulation step size of the distribution network PDS , update the available capacity of the gas distribution network GDS; when there is no available capacity in the GDS and the delay value , the electrical coupling information is updated; when GDS has available capacity, GDS optimizes a time step , solve the gas supply recovery plan and delay value , simulate and deduce the gas supply recovery plan, let , update the electrical coupling information; set up , update the PDS available power, when there is no available capacity in the PDS and the delay value Time, let observation time ,Compare and ,when The solution ends when , otherwise the GDS available capacity is updated again; when PDS has available capacity, PDS optimizes a time step , solve the power supply restoration plan, simulate and deduce the power supply restoration plan, let , ,like and Seasonal observation time ,like The PDS available power is then updated.

[0120] The present invention also proposes an integrated energy system energy supply recovery system taking into account demand response compensation evaluation, comprising: The compensation evaluation module is used to establish a unit capacity compensation cost model for the energy load that can be reduced, so as to evaluate the compensation for the energy load that can be reduced in each partition of the system in different energy restoration schemes; The energy restoration net benefit module is used to utilize the benefits, costs, evaluation values ​​of energy load compensation that can be reduced, transportation costs of mobile energy, and risk costs of each zone in different energy restoration plans to form the energy restoration net benefit of each zone; The zoning and energy supply recovery optimization module is used for the system energy supply recovery optimization module based on the two-layer model structure; the upper model determines the zoning scheme with the goal of maximizing the sum of the net benefits of energy supply recovery in all zones, and optimizes the zoning scheme according to the real-time scheduling of mobile energy; the lower model, based on the optimized zoning scheme, uses the unit capacity compensation cost model of the reducible energy load to re-evaluate the compensation for the reducible energy load of each optimized zone in different energy supply recovery schemes, and determines the energy supply recovery scheme of each zone with the goal of maximizing the updated net benefit of energy supply recovery in each zone; the lower model feeds back the updated net benefit of energy supply recovery of each zone to the upper model; through multiple iterations, the optimal zoning of the integrated energy system and the energy supply recovery scheme of each optimal zone are obtained.

[0121] The present disclosure may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0122] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples (a non-exhaustive list) of computer-readable storage media include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the above. The computer-readable storage medium used herein is not to be interpreted as a transient signal itself, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0123] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0124] The computer program instructions for performing the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer, partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect through the Internet). In some embodiments, by using the state information of the computer-readable program instructions to personalize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), the electronic circuit may execute the computer-readable program instructions, thereby implementing various aspects of the present disclosure.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for energy supply restoration of an integrated energy system taking into account demand response compensation evaluation, characterized in that: include: Establish a unit capacity compensation cost model for curtailable energy load to evaluate the curtailable energy load compensation for each zone in different energy restoration plans; The net benefit of energy restoration in each zone is constructed by using the benefits, costs, compensation for reducible energy load, transportation costs and risk costs of mobile energy in different energy restoration plans. A system energy restoration optimization module is established based on a two-layer model structure. The upper model determines the zoning plan with the goal of maximizing the sum of the net benefits of energy restoration in all zones, and optimizes the zoning plan with real-time scheduling of mobile energy. The lower model is based on the optimized zoning plan and uses the unit capacity compensation cost model of reducible energy load to re-evaluate the compensation for reducible energy load in each optimized zone in different energy restoration plans, and determines the energy restoration plan for each zone with the goal of maximizing the updated net benefit of energy restoration in each zone. The lower model feeds back the updated net benefits of energy recovery in each zone to the upper model; The optimal partitioning of the integrated energy system and the energy supply recovery plan for each optimal partition are obtained through iteration.

2. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 1 is characterized in that: The system's reducible energy load includes: reducible electricity load; collecting data on reducible electricity load to determine the proportion and reduction rate of reducible electricity load, and determining the cumulative reduction times and cumulative reduction ratio of reducible electricity load at each node in the system; collecting data on distributed power sources to determine the stability of the distributed power output forecast value; collecting and using electricity load data and distributed power source data to determine the adequacy of restored energy supply in the area to be restored; using the proportion and reduction rate of reducible electricity load, the cumulative reduction times and cumulative reduction ratio of reducible electricity load at each node in the system, the stability of the distributed power output forecast value, and the adequacy of restored power supply in the area to be restored, a unit capacity compensation cost model for reducible electricity load is established; Among them, the data on the electricity load that can be reduced include: reduction amount, rated power, and power.

3. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 2 is characterized in that: The proportion of power load can be reduced to meet the following relationship: In the formula, For the system The proportion of electricity load that can be reduced at any time, the value range is [0,1], is the total number of electrical nodes, For Node Rated power of the electrical load; For Node Department The rated power of the power load can be reduced at any time; The reduction rate of the power load can be reduced to meet the following relationship: In the formula, For the system The reduction rate of the power load that can be reduced at any time, the value range is [0,1], and 1 means All the power loads that can be reduced are operating normally at all times, and 0 means All the electricity loads that can be reduced are shut down at all times; For Node Department The power of the electrical load can be reduced at any time; The cumulative reduction times of power load can be reduced, satisfying the following relationship: In the formula, For Node Department The cumulative number of times the power load can be reduced at any time. ; is a symbolic function; is the evaluation time step of the cumulative reduction times of the electricity load that can be reduced; For Node Department The amount of reduction in electricity load that can be reduced at any time; The observation interval of the cumulative reduction times of the power load that can be reduced is the starting recovery time of the area to be restored in the system. To the set evaluation end time ; The cumulative reduction ratio of the power load that can be reduced satisfies the following relationship: In the formula, For Node Department The power load can be reduced within the interval The cumulative reduction ratio is in the range of [0,1]. 1 means that the power load can be reduced within the interval All cuts within 0 means that the power load can be reduced within the range There are no cuts within; For interval The number of time periods within For Node Department The reduction rate of electricity load can be reduced during different time periods.

4. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 3 is characterized in that: Distributed power source data, including: rated power, output forecast value; The stability of the output prediction value of distributed power generation satisfies the following relationship: In the formula, For distributed power in the system The stability of the output prediction value at each moment, with a value range of [0,1], where 1 indicates that the output prediction value is constant, and 0 indicates that the output prediction value fluctuates; is the evaluation time step of the stability of the output prediction value; For From the time to the set evaluation end time The total number of time periods between is the time period serial number; For Node Distributed power sources at Output forecast value at the time; For Node The rated power output of the distributed power source at the location; It is the node set corresponding to the distributed power source in the system.

5. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 4 is characterized in that: The data of power load includes: the rated power of power load and the power of power load after power supply is restored; The adequacy of power supply restoration in the area to be restored in the system satisfies the following relationship: In the formula, The adequacy of power supply restoration in the area to be restored in the system, ,and The smaller the value is, the lower the adequacy of power supply to be restored in the area to be restored. The larger the value is, the higher the adequacy of power supply restoration in the area to be restored. For Node Department The power output of distributed power sources at all times; For Node Department The power of the electrical load that is restored at all times.

6. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 5 is characterized in that: The unit capacity compensation cost model for reducing electricity load satisfies the following relationship: In the formula, For Node Department Unit capacity compensation fee for reducing electricity load at any time; For Node The quotation when the electricity load that can be reduced is reduced all at once; is the proportion of distributed power sources in the system, and its value range is [0,1]. A value of 0 indicates that there is no distributed power generation in the system; For Node At the set assessment end time The cumulative number of times the power load can be reduced.

7. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 1 is characterized in that: The system's reducible energy load includes: reducible gas load; collect data on reducible gas load to determine the proportion and reduction rate of reducible gas load, and determine the cumulative reduction times and cumulative reduction proportion of reducible gas load at each node in the system; collect and use data on gas load and gas source in the system to determine the adequacy of gas supply restoration in the area to be restored; A unit capacity compensation cost model for the reducible gas load is established using the proportion and reduction rate of the reducible gas load, the cumulative reduction times and cumulative reduction proportion of the reducible gas load at each node in the system, and the adequacy of gas supply restoration in the area to be restored. Among them, the data on gas load that can be reduced include: reduction amount, rated power, and power.

8. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 7 is characterized in that: The proportion of gas load can be reduced to meet the following relationship: In the formula, For the system The percentage of gas load that can be reduced at any time, the value range is [0,1], is the total number of gas nodes, For Node Rated power of gas load; For Node Department The rated power of the gas load can be reduced at any time; The reduction rate of gas load can be reduced to meet the following relationship: In the formula, For the system The reduction rate of gas load that can be reduced at any time. The value range is [0,1], where 1 means All the gas loads that can be reduced in the system are operating normally at the moment, and 0 means All the gas loads that can be reduced in the system are shut down at all times; For Node Department The power of gas load can be reduced at any time; The cumulative reduction times of gas load reduction at each node in the system can satisfy the following relationship: In the formula, For Node Department The cumulative reduction times of gas load reduction can be reduced at any time. ; is a symbolic function; is the evaluation time step of the cumulative reduction times of the gas load that can be reduced; For Node Department The amount of reduction in gas load that can be reduced at any time; The observation interval of the cumulative reduction times of the gas load that can be reduced is the starting recovery time of the area to be restored in the system. To the set evaluation end time ; The cumulative reduction ratio of gas load that can be reduced at each node in the system satisfies the following relationship: In the formula, For Node Department Time can reduce gas load in the interval The cumulative reduction ratio is in the range of [0,1]. 1 means that the gas load can be reduced within the interval All cuts within 0 means that the gas load can be reduced within the range There are no cuts within; For interval The number of time periods within For Node Department The reduction rate of gas load that can be reduced during the period; The adequacy of gas supply restoration in the area to be restored in the system satisfies the following relationship: In the formula, To restore the gas supply adequacy of the area to be restored in the system, ,and The smaller the value is, the lower the gas supply adequacy of the area to be restored is. The larger the value is, the higher the gas supply adequacy of the area to be restored is. For Node Department The power output of distributed power sources at all times; For Node Department The power of the electrical load that is restored at all times; It is the node set corresponding to the gas source in the system.

9. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 8 is characterized in that: The unit capacity compensation cost model for reducing gas load satisfies the following relationship: In the formula, For Node Department Unit capacity compensation fee for reducing gas load at any time; For Node The quotation when the gas load that can be reduced is reduced all at once; For Node At the set assessment end time The cumulative number of reductions that can reduce gas load.

10. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 1, characterized in that: Based on the unit capacity compensation cost model of the reducible electricity load, the compensation for the reducible electricity load in each zone within the system in different energy restoration plans is evaluated; based on the unit capacity compensation cost model of the reducible gas load, the compensation for the reducible gas load in each zone within the system in different energy restoration plans is evaluated.

11. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 10, characterized in that: The power restoration plan The compensation cost for the reduced power load in this step satisfies the following relationship: In the formula, The power restoration plan The compensation for the reduced electricity load in the next step is The power restoration plan The moment when the power supply of the load in the step is restored, and The power restoration plan is Step The unit capacity compensation cost of electricity load and the user's compensation capacity can be reduced at any time. The evaluation end time is set.

12. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 10, characterized in that: Gas supply restoration plan The compensation cost for the reduced gas load in this step satisfies the following relationship: In the formula, The power restoration plan The compensation for the reduced gas load in the step The plan for restoring gas supply When the gas load in the step resumes gas supply, and The gas supply restoration plan is Step The unit capacity compensation cost of gas load and the user's compensation capacity can be reduced at any time. The evaluation end time is set.

13. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 1, characterized in that: In each zone, the net profit of the power supply restoration plan is composed of the income from the power supply restoration plan, the power supply cost, the compensation for the reduced power load, the transportation cost of the mobile power source, and the risk cost; the net profit of the gas supply restoration plan is composed of the income from the gas supply restoration plan, the gas supply cost, the compensation for the reduced gas load, the transportation cost of the mobile gas source, and the risk cost.

14. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 13, characterized in that: The maximization of the sum of the net benefits of the power supply restoration scheme and the gas supply restoration scheme within a zone is used as the optimization objective function of the lower model, satisfying the following relationship: In the formula, Partition the system The sum of the net benefits of the power supply restoration plan and the gas supply restoration plan, and Partitions in the same decision period The number of steps in the power supply restoration plan and the number of steps in the gas supply restoration plan; and The power restoration plan is The benefits of restoring power supply to the electric load in step 1 and the benefits of restoring gas supply in step 2 The benefits of gas load restoration during the step; and The power restoration plan is The power supply cost of the power supply in step 1 and the gas supply restoration plan in step 2 The gas supply cost of the gas source in the step; and The power restoration plan is The compensation for the reduced electricity load and the gas supply restoration plan in the first step The compensation cost of reducing gas load can be reduced in the next step; and The power restoration plan is The transportation cost of the mobile power supply and the gas supply restoration plan in step 1 The transportation cost of the mobile gas source in the step; and The power restoration plan is The risk cost of electricity load in step 1 and the gas supply restoration plan in step 2 The risk cost of gas load in the step.

15. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 14, characterized in that: The power restoration plan The risk cost of the electric load in the step satisfies the following relationship: In the formula, The power restoration plan Step The unit capacity recovery risk of the electric load at each moment; , The power restoration plan is The unit recovery income and recovery amount of the electric load restored step by step at time t; Gas supply restoration plan The risk cost of gas load in the step satisfies the following relationship: In the formula, The plan for restoring gas supply Step Unit capacity recovery risk of gas load at each moment; , The gas supply restoration plan is The unit recovery benefit and recovery amount of the gas load restored in the first step at time t.

16. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 14, characterized in that: The constraints of the lower objective function include: power supply system operation and demand response constraints, gas supply system operation and demand response constraints.

17. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 14, characterized in that: The maximum sum of the net benefits of the power supply restoration scheme and the gas supply restoration scheme in each partition of the system is the optimization objective function of the upper model, which satisfies the following relationship: In the formula, the net benefit of restoring energy to the system; is the total number of partitions containing power loads, each partition containing power loads has at least one power supply in V / F control mode; Partition the system The sum of the net income from the restoration of power supply by the internal power distribution system and the net income from the restoration of gas supply by the gas distribution system, .

18. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 17, characterized in that: The constraints of the upper objective function include: radial topology constraints, system operation constraints, mobile power supply constraints and mobile gas source constraints.

19. The integrated energy system energy supply restoration method taking into account demand response compensation evaluation according to claim 1, characterized in that: When solving the lower model, the delay value representing the delay characteristics of gas load transmission is set to satisfy the following relationship: In the formula, is the delay value, , Natural gas pipelines within the region length and diameter, for The gas load supply at the moment, For gas to flow from the previous pipeline into the natural gas pipeline The delay value at the inlet end of the pipeline is that gas flows into the natural gas pipeline from multiple previous pipelines. At the entrance of Take the average of the delay values.

20. An integrated energy system energy supply restoration system taking into account demand response compensation evaluation, characterized in that: include: The compensation evaluation module is used to establish a unit capacity compensation cost model for the energy load that can be reduced, so as to evaluate the compensation for the energy load that can be reduced in each partition of the system in different energy restoration schemes; The energy restoration net benefit module is used to utilize the benefits, costs, evaluation values ​​of energy load compensation that can be reduced, transportation costs of mobile energy, and risk costs of each zone in different energy restoration plans to form the energy restoration net benefit of each zone; The partition and energy supply recovery optimization module is used for the system energy supply recovery optimization module based on the two-layer model structure; the upper model determines the partition scheme with the goal of maximizing the sum of the net benefits of energy supply recovery in all partitions, and optimizes the partition scheme according to the real-time scheduling of mobile energy; the lower model, based on the optimized partition scheme, uses the unit capacity compensation cost model of the energy load that can be reduced to re-evaluate the compensation for the energy load that can be reduced after optimization in different energy supply recovery schemes, and determines the energy supply recovery scheme for each partition with the goal of maximizing the net benefit of energy supply recovery in each partition after the update; The lower-level model feeds back the updated net benefits of energy restoration in each partition to the upper-level model; through multiple iterations, the optimal partitioning of the integrated energy system and the energy restoration plan for each optimal partition are obtained.

21. A terminal, comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is configured to operate according to the instructions to execute the steps of the method according to any one of claims 1 to 19.

22. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 19 are implemented.

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