Power distribution network operation control method based on power distribution network transfer and supply and source load coordinated regulation and control

Abstract

The invention provides a power distribution network operation control method based on power distribution network transfer and source load coordinated regulation and control, and relates to the technical field of regional power distribution network operation control. Collecting load data of the target power distribution network and the contact power distribution network, and obtaining a short-time prediction result of the target power distribution network and the transfer capacity of the contact power distribution network based on the collected data; calculating a regulation and control demand of the target power distribution network, judging whether the transfer capacity of the contact power distribution network meets the regulation and control demand of the target power distribution network, and if so, transferring the load of the target power distribution network to the contact power distribution network; otherwise, transferring the load of the target power distribution network to the contact power distribution network, calculating a difference gap between the regulation and control demand of the target power distribution network and the transfer capacity of the contact power distribution network, and performing source-load coordinated regulation and control on the difference gap part; diversified regulation and control means are adopted, fault recovery and resource scheduling of the target power distribution network are optimized cooperatively, and the stability of operation control of the power distribution network is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of regional distribution network operation control, and more specifically, to a distribution network operation control method based on distribution network transfer and source-load coordinated regulation. Background Art

[0002] With the development demands brought about by the new power system, more and more new loads and renewable energy sources are connected to traditional distribution networks, bringing greater load security challenges to traditional distribution networks. Currently, to ensure load security during distribution network operation, two main methods are considered: distribution network transfer and source-load coordinated regulation.

[0003] Although there are relevant studies on distribution network transfer and source-load coordinated regulation at home and abroad, for example, in terms of distribution network transfer, the existing technology discloses a distribution network load transfer method that considers secondary transfer, and uses genetic algorithms to solve the secondary transfer process. The secondary transfer takes the maximum transferable load as the objective function, and optimizes the transfer path of the power outage load while fully considering the line constraints and main transformer constraints. When the capacity of the target substation is insufficient, increasing the power supply recovery amount through secondary transfer can effectively improve the load transfer success rate while reducing the load recovery time, thereby reducing the load loss caused by the power outage caused by the substation. However, when solving the transfer path based on the genetic algorithm, the response speed is slow, which is not enough to cope with the output fluctuations in scenarios with high penetration rates of distributed power sources such as photovoltaic and wind power, resulting in system instability again after the secondary transfer.

[0004] In terms of source-load coordinated regulation, existing technologies have proposed a coordinated control method for optimizing source-load operating resources in distribution networks. This method uses curve fitting based on historical data for each power source and load to form a real-time resource function change curve. Based on the total amount of dispatchable resources and the real-time resource function change curve, online scheduling resources are generated. After obtaining the online scheduling resources, online regulation for the corresponding period is initiated. By matching online resource scheduling with system resources, efficient and timely matching of regulation resources and speed is achieved. However, this method is limited to daily operation. While it achieves second-level regulation speed optimization, it lacks topological constraints for fault scenarios, and high-speed regulation can trigger chain reactions.

[0005] However, current research mainly focuses on the separate research of distribution network transfer or source-load coordinated optimization control, lacking a coordinated optimization mechanism for fault recovery and resource scheduling, resulting in the problem of insufficient stability in the existing distribution network operation control. Summary of the Invention

[0006] In order to solve the problems of poor stability and insufficient safety in the existing distribution network operation control methods, the present invention proposes a distribution network operation control method based on distribution network transfer and source-load coordinated regulation, which provides a reference for diversified regulation means for the safe operation of the actual distribution network and enhances the stability of distribution network operation control.

[0007] In order to achieve the above technical effects, the technical solutions of the present invention are as follows: In the first aspect, the present application proposes a distribution network operation control method based on distribution network transfer and source-load coordinated regulation, comprising the following steps: S1. Collect historical load data and real-time load data of the target distribution network and real-time load data of the contact distribution network; S2. Based on the historical load data and real-time load data of the target distribution network, a short-term load forecast of the target distribution network is performed to obtain a short-term forecast result of the target distribution network load; S3. Based on the real-time load data of the interconnected distribution network, the transferable capacity of the interconnected distribution network is calculated; based on the short-term forecast results and real-time load data of the target distribution network load, the control demand of the target distribution network is calculated; S4. Determine whether the transferable capacity of the interconnecting distribution network meets the regulation demand of the target distribution network. If so, transfer the load of the target distribution network to the interconnecting distribution network and end the regulation. Otherwise, transfer the load of the target distribution network to the interconnecting distribution network, calculate the difference between the regulation demand of the target distribution network and the transferable capacity of the interconnecting distribution network, and perform source-load coordinated regulation on the difference.

[0008] In this technical solution, the historical load data and real-time load data of the target distribution network and the real-time load data of the interconnecting distribution network are first collected, and the short-term forecast results of the target distribution network and the transferable capacity of the interconnecting distribution network are obtained based on the collected data respectively; based on the short-term forecast results and real-time load data of the target distribution network load, the control demand of the target distribution network is calculated, and it is judged whether the transferable capacity of the interconnecting distribution network meets the control demand of the target distribution network. If so, the load of the target distribution network is transferred to the interconnecting distribution network, and the control is ended; otherwise, the load of the target distribution network is transferred to the interconnecting distribution network, and the difference gap between the control demand of the target distribution network and the transferable capacity of the interconnecting distribution network is calculated, and the source-load coordinated control is performed on the difference gap part; this technical solution adopts diversified control means to coordinately optimize fault recovery and resource scheduling of the target distribution network, thereby enhancing the stability of distribution network operation control.

[0009] Preferably, the historical load data of the target distribution network includes: the load data of the target distribution network at each moment within the last 7 days The real-time load data of the target distribution network includes the load data of the target distribution network at the current moment The real-time load data of the interconnected distribution network includes the real-time load rate of the interconnected distribution network , the charging load, air-conditioning load, large industrial load, energy storage load and photovoltaic output regulation potential of the interconnected distribution network.

[0010] Preferably, the process of performing short-term forecasting on the load of the target distribution network is as follows: Calculate the target distribution network in the future Load change rate at each moment , the expression is:

[0011] in, is the time span of the short-term forecast, The target distribution network starts from the 7th day closest to the current one. Heaven Always in the future The forecast load at the time, The target distribution network starts from the 7th day closest to the current one. Heaven Always in the future Forecast load at the time; The load of the target distribution network is predicted based on the load change rate. The expression is:

[0012] in, The target distribution network is currently Always looking to the future Short-term forecast load at the moment, The target distribution network is currently Always looking to the future Short-term forecast load at the moment.

[0013] Preferably, the transferable capacity of the interconnected distribution network is calculated using the expression:

[0014] in, To connect the distribution network The ability to transfer supplies at any time, is the rated capacity of the interconnection distribution network used for transfer, Interconnected distribution network for power transfer The upper limit of safety at any moment, Interconnected distribution network for power transfer The operating load rate at the moment.

[0015] Preferably, the process of calculating the control demand of the target distribution network is: Based on the short-term forecast results of the target distribution network, the target distribution network is obtained. The maximum value of real-time load and short-term forecast load at the moment , the expression is:

[0016] in, The target distribution network is currently Short-term forecast load at the moment, The target distribution network is currently Always looking to the future Short-term forecast load at the moment, The target distribution network is currently Always looking to the future Short-term forecast load at the moment; Calculate the control requirements of the target distribution network , the expression is:

[0017] in, is the rated capacity of the target distribution network, It is the upper limit of safe operation of the load rate of the target distribution network.

[0018] Preferably, the process of determining whether the transferable capacity of the interconnected distribution network meets the control requirements of the target distribution network is as follows: if so, the load of the target distribution network is transferred to the interconnected distribution network, and the control is terminated; otherwise, the load of the target distribution network is transferred to the interconnected distribution network, and the difference between the control requirements of the target distribution network and the transferable capacity of the interconnected distribution network is calculated, and source-load coordinated control is performed on the difference. The process is as follows: Determine the transferable capacity of the interconnected distribution network Whether the control requirements of the target distribution network are met ,like , then the load of the target distribution network is transferred to the interconnected distribution network, and the control is ended; like , then after the target distribution network transfers, source-load coordinated regulation is carried out, and the process is as follows: Construct a source-load coordinated control optimization model to The load gap is regulated, and the objective function is expressed as:

[0019] in, The comprehensive cost of market users participating in demand response, for Time-of-use electricity prices at different times, The demand response subsidy standard is To control the time period set, is the set of non-regulated time periods, For the target distribution network The operating load at the moment, for The load that needs to be regulated in the target distribution network at the moment; The constraint expression is:

[0020] in, is the maximum operating capacity of the target distribution network line, is the power factor, is the safe load rate boundary;

[0021] in, For nodes The voltage amplitude is next, For nodes The voltage amplitude of the previous session;

[0022] in, To pass the line The upper bound of the current amplitude;

[0023]

[0024] in, and are the peak and valley values ​​of regional load before regulation, and are the peak and valley values ​​of the region after regulation, respectively;

[0025] in, and The load resources are Always adjust the upper and lower limits of potential; break down The load in the target distribution network that needs to be regulated at the moment , the expression is:

[0026] in, is the charging load that needs to be regulated in the target distribution network, is the air conditioning load that needs to be regulated in the target distribution network. For large industrial loads that need to be regulated in the target distribution network, The energy storage load that needs to be regulated in the target distribution network, The photovoltaic output that needs to be regulated in the target distribution network, 、 、 、 、 are the resource existence factors of charging load, air conditioning load, large industrial load, energy storage load and photovoltaic output in the target distribution network; judge and If the size relationship between , then based on the charging load , air conditioning load , large industrial load , energy storage load , photovoltaic output to regulate; like , then the charging load , air conditioning load , large industrial load , energy storage load , photovoltaic output Multiply by the adjustment coefficient After the regulation, the expression is: .

[0027] Preferably, the method further comprises: when the When , the target distribution network is subjected to power restriction operation, and the expression of the power restriction load is: .

[0028] In a second aspect, the present application also proposes a distribution network operation control system based on distribution network transfer and source-load coordinated regulation, the system comprising: Load data acquisition unit, used to collect historical load data and real-time load data of the target distribution network and real-time load data of the interconnected distribution network; A short-term forecast result calculation unit is used to perform a short-term forecast on the load of the target distribution network based on the historical load data and real-time load data of the target distribution network, and obtain a short-term forecast result of the load of the target distribution network; The control demand calculation unit is used to calculate the transferable capacity of the interconnected distribution network based on the real-time load data of the interconnected distribution network; and calculate the control demand of the target distribution network based on the short-term forecast result of the target distribution network load and the real-time load data; The distribution network operation control unit is used to determine whether the transferable capacity of the interconnecting distribution network meets the regulation requirements of the target distribution network. If so, the load of the target distribution network is transferred to the interconnecting distribution network, and the regulation is ended; otherwise, the load of the target distribution network is transferred to the interconnecting distribution network, and the difference gap between the regulation requirements of the target distribution network and the transferable capacity of the interconnecting distribution network is calculated, and the source-load coordinated regulation is performed on the difference gap.

[0029] On the third aspect, the present application also proposes a computer device, which includes a memory, a processor, and a computer program stored in the memory that can be run on the processor. The processor executes the computer program to implement the distribution network operation control method based on distribution network transfer and source-load coordinated regulation.

[0030] Fourthly, the present application also proposes a computer storage medium on which a computer program is stored, wherein the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the distribution network operation control method based on distribution network transfer and source-load coordinated regulation.

[0031] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a distribution network operation control method based on distribution network transfer and source-load coordinated regulation. First, the historical load data and real-time load data of the target distribution network and the real-time load data of the interconnecting distribution network are collected, and based on the collected data, the short-term forecast result of the target distribution network and the transferable capacity of the interconnecting distribution network are obtained respectively; based on the short-term forecast result and the real-time load data of the target distribution network load, the regulation demand of the target distribution network is calculated, and it is judged whether the transferable capacity of the interconnecting distribution network meets the regulation demand of the target distribution network. If so, the load of the target distribution network is transferred to the interconnecting distribution network, and the regulation is ended; otherwise, the load of the target distribution network is transferred to the interconnecting distribution network, and the difference gap between the regulation demand of the target distribution network and the transferable capacity of the interconnecting distribution network is calculated, and the source-load coordinated regulation is performed on the difference gap part; this technical solution adopts diversified regulation means, and performs coordinated optimization of fault recovery and resource scheduling on the target distribution network, thereby enhancing the stability of distribution network operation control. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram showing a flow chart of a distribution network operation control method based on distribution network transfer and source-load coordinated regulation proposed in Example 1 of the present invention; Figure 2 A schematic diagram showing the structure of a distribution network operation control system based on distribution network transfer and source-load coordinated regulation proposed in Example 3 of the present invention; Figure 3 A schematic diagram showing the structure of the computer device proposed in Example 4 of the present invention. DETAILED DESCRIPTION

[0033] The accompanying drawings are for illustrative purposes only and are not to be construed as limiting this patent; In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the actual size; It is understandable to those skilled in the art that descriptions of certain well-known contents may be omitted in the drawings.

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0035] The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent; Example 1 This embodiment proposes a distribution network operation control method based on distribution network transfer and source-load coordinated regulation. The flow chart of this method is shown in Figure 1 , including the following steps: S1. Collect historical load data and real-time load data of the target distribution network and real-time load data of the contact distribution network; S2. Based on the historical load data and real-time load data of the target distribution network, a short-term load forecast of the target distribution network is performed to obtain a short-term forecast result of the target distribution network load; S3. Based on the real-time load data of the interconnected distribution network, the transferable capacity of the interconnected distribution network is calculated; based on the short-term forecast results and real-time load data of the target distribution network load, the control demand of the target distribution network is calculated; S4. Determine whether the transferable capacity of the interconnecting distribution network meets the regulation demand of the target distribution network. If so, transfer the load of the target distribution network to the interconnecting distribution network and end the regulation. Otherwise, transfer the load of the target distribution network to the interconnecting distribution network, calculate the difference between the regulation demand of the target distribution network and the transferable capacity of the interconnecting distribution network, and perform source-load coordinated regulation on the difference.

[0036] In this embodiment, the historical load data and real-time load data of the target distribution network and the real-time load data of the interconnecting distribution network are first collected, and the short-term forecast results of the target distribution network and the transferable capacity of the interconnecting distribution network are obtained based on the collected data respectively; based on the short-term forecast results and real-time load data of the target distribution network load, the control demand of the target distribution network is calculated, and it is judged whether the transferable capacity of the interconnecting distribution network meets the control demand of the target distribution network. If so, the load of the target distribution network is transferred to the interconnecting distribution network, and the control is ended; otherwise, the load of the target distribution network is transferred to the interconnecting distribution network, and the difference gap between the control demand of the target distribution network and the transferable capacity of the interconnecting distribution network is calculated, and the source-load coordinated control is performed on the difference gap part; this technical solution adopts diversified control means to coordinately optimize fault recovery and resource scheduling of the target distribution network, thereby enhancing the stability of distribution network operation control.

[0037] Example 2 In this embodiment, the historical load data of the target distribution network includes: the load data of the target distribution network at each time within the last 7 days The real-time load data of the target distribution network includes the load data of the target distribution network at the current moment The real-time load data of the interconnected distribution network includes the real-time load rate of the interconnected distribution network , the control potential of charging load, air conditioning load, large industrial load, energy storage load and photovoltaic output of the interconnected distribution network; Specifically, the control potential of the charging load, air conditioning load, large industrial load, energy storage load and photovoltaic output of the interconnected distribution network includes the upper limit of the control potential and lower limit .

[0038] In this embodiment, the process of performing short-term forecasting on the load of the target distribution network is as follows: Calculate the target distribution network in the future Load change rate at each moment , the expression is:

[0039] in, is the time span of the short-term forecast, The target distribution network starts from the 7th day closest to the current one. Heaven Always in the future The forecast load at the time, The target distribution network starts from the 7th day closest to the current one. Heaven Always in the future Forecast load at the time; The load of the target distribution network is predicted based on the load change rate. The expression is:

[0040] in, The target distribution network is currently Always looking to the future Short-term forecast load at the moment, The target distribution network is currently Always looking to the future Short-term forecast load at the moment; Specifically, the load change rate of the target distribution network at the future time is calculated, and the current Moment of the Future The load change rate at the moment is predicted, and the expression is:

[0041]

[0042]

[0043]

[0044] Specifically, the short-term forecast of the load of the target distribution network also includes the current Moment of the Future The short-term load forecast at the moment is as follows:

[0045]

[0046]

[0047]

[0048] In this embodiment, the transferable capacity of the interconnected distribution network is calculated using the expression:

[0049] in, To connect the distribution network The ability to transfer supplies at any time, is the rated capacity of the interconnection distribution network used for transfer, Interconnected distribution network for power transfer The upper limit of safety at any moment, Interconnected distribution network for power transfer The operating load rate at the moment.

[0050] In this embodiment, the process of calculating the control demand of the target distribution network is as follows: Based on the short-term forecast results of the target distribution network, the target distribution network is obtained. The maximum value of real-time load and short-term forecast load at the moment , the expression is:

[0051] in, The target distribution network is currently Short-term forecast load at the moment, The target distribution network is currently Always looking to the future Short-term forecast load at the moment, The target distribution network is currently Always looking to the future Short-term forecast load at the moment; Calculate the control requirements of the target distribution network , the expression is:

[0052] in, is the rated capacity of the target distribution network, It is the upper limit of safe operation of the load rate of the target distribution network.

[0053] In this embodiment, it is determined whether the transferable capacity of the interconnected distribution network meets the control requirements of the target distribution network. If so, the load of the target distribution network is transferred to the interconnected distribution network, and the control is terminated. Otherwise, the load of the target distribution network is transferred to the interconnected distribution network, and the difference between the control requirements of the target distribution network and the transferable capacity of the interconnected distribution network is calculated. The source-load coordinated control is performed on the difference. The process is as follows: Determine the transferable capacity of the interconnected distribution network Whether the control requirements of the target distribution network are met ,like , then the load of the target distribution network is transferred to the interconnected distribution network, and the control is ended; like , then after the target distribution network transfers, source-load coordinated regulation is carried out, and the process is as follows: Construct a source-load coordinated control optimization model to The load gap is regulated, and the objective function is expressed as:

[0054] in, The comprehensive cost of market users participating in demand response, for Time-of-use electricity prices at different times, The demand response subsidy standard is To control the time period set, is the set of non-regulated time periods, For the target distribution network The operating load at the moment, for The load that needs to be regulated in the target distribution network at the moment; The constraint expression is:

[0055] in, is the maximum operating capacity of the target distribution network line, is the power factor, The safe load rate boundary is usually set at 100% of the overload boundary, and 80% of the heavy load boundary can be set in some important load power consumption areas. Specifically, ,in, is the rated voltage at the head end of the distribution network line, is the current carrying capacity of the distribution network line,

[0056] in, For nodes The voltage amplitude is next, For nodes The voltage amplitude of the previous session;

[0057] in, To pass the line The upper bound of the current amplitude;

[0058]

[0059] in, and are the peak and valley values ​​of regional load before regulation, and are the peak and valley values ​​of the region after regulation, respectively;

[0060] in, and The load resources are Always adjust the upper and lower limits of potential; break down The load in the target distribution network that needs to be regulated at the moment , the expression is:

[0061] in, is the charging load that needs to be regulated in the target distribution network, is the air conditioning load that needs to be regulated in the target distribution network. For large industrial loads that need to be regulated in the target distribution network, The energy storage load that needs to be regulated in the target distribution network, The photovoltaic output that needs to be regulated in the target distribution network, 、 、 、 、 are the resource existence factors of charging load, air conditioning load, large industrial load, energy storage load and photovoltaic output in the target distribution network; Specifically, the resource existence factor is a 0-1 variable. If these resources do not meet the conditions for participating in power dispatch in a certain area, their availability index will be set to 0. On the contrary, if they meet the requirements for participating in power dispatch, their availability index will be set to 1.

[0062] Specifically, the charging load, air conditioning load, large industrial load, energy storage load, and photovoltaic output, where a positive load value indicates that the load is being generated, a negative value indicates that the energy storage device is discharging and feeding power to the grid, and a value of 0 indicates that no load is being generated; and a positive photovoltaic output value indicates that the photovoltaic device is feeding power to the grid, and a value of 0 indicates that the photovoltaic device has been disconnected and put into operation; judge and If the size relationship between , then based on the charging load , air conditioning load , large industrial load , energy storage load , photovoltaic output to regulate; like , then the charging load , air conditioning load , large industrial load , energy storage load , photovoltaic output Multiply by the adjustment coefficient After the regulation, the expression is: .

[0063] In this embodiment, the method further includes: when the When , the target distribution network is subjected to power restriction operation, and the expression of the power restriction load is: .

[0064] Example 3 This embodiment proposes a distribution network operation control system based on the coordinated regulation of distribution network transfer and source load. In this embodiment, the system is used to implement a distribution network operation control method based on the coordinated regulation of distribution network transfer and source load. The structural diagram is shown in FIG. Figure 2 Shown, including: Load data acquisition unit, used to collect historical load data and real-time load data of the target distribution network and real-time load data of the interconnected distribution network; A short-term forecast result calculation unit is used to perform a short-term forecast on the load of the target distribution network based on the historical load data and real-time load data of the target distribution network, and obtain a short-term forecast result of the load of the target distribution network; The control demand calculation unit is used to calculate the transferable capacity of the interconnected distribution network based on the real-time load data of the interconnected distribution network; and calculate the control demand of the target distribution network based on the short-term forecast result of the target distribution network load and the real-time load data; The distribution network operation control unit is used to determine whether the transferable capacity of the interconnecting distribution network meets the regulation requirements of the target distribution network. If so, the load of the target distribution network is transferred to the interconnecting distribution network, and the regulation is ended; otherwise, the load of the target distribution network is transferred to the interconnecting distribution network, and the difference gap between the regulation requirements of the target distribution network and the transferable capacity of the interconnecting distribution network is calculated, and the source-load coordinated regulation is performed on the difference gap.

[0065] Example 4 In this embodiment, a computer device is proposed. The computer device 100 includes a memory 101, a processor 102, and a computer program stored in the memory 101 and executable by the processor. The processor 102 executes the computer program to implement a distribution network operation control method based on distribution network transfer and source-load coordinated regulation. The structural diagram of the computer device is shown in FIG. Figure 3 shown.

[0066] In this embodiment, a computer storage medium is proposed, on which a computer program is stored. The computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the distribution network operation control method based on distribution network transfer and source-load coordinated regulation.

[0067] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A distribution network operation control method based on distribution network transfer and source-load coordinated regulation, characterized in that: The following steps are involved: Collect historical load data and real-time load data of the target distribution network and real-time load data of the contact distribution network; Based on the historical load data and real-time load data of the target distribution network, a short-term load forecast of the target distribution network is performed to obtain a short-term forecast result of the target distribution network load; Based on the real-time load data of the interconnection distribution network, the transferable capacity of the interconnection distribution network is calculated; Based on the short-term forecast results and real-time load data of the target distribution network load, the control demand of the target distribution network is calculated; Determine whether the transferable capacity of the interconnected distribution network meets the control requirements of the target distribution network. If so, transfer the load of the target distribution network to the interconnected distribution network, and end the control; Otherwise, the load of the target distribution network is transferred to the interconnecting distribution network, and the difference between the control demand of the target distribution network and the transferable capacity of the interconnecting distribution network is calculated, and the source-load coordinated control is performed on the difference gap.

2. The distribution network operation control method based on distribution network transfer and source-load coordinated regulation according to claim 1 is characterized in that: The historical load data of the target distribution network includes: the load data of the target distribution network at each time within the last 7 days The real-time load data of the target distribution network includes the load data of the target distribution network at the current moment The real-time load data of the interconnected distribution network includes the real-time load rate of the interconnected distribution network , the charging load, air-conditioning load, large industrial load, energy storage load and photovoltaic output regulation potential of the interconnected distribution network.

3. The distribution network operation control method based on distribution network transfer and source-load coordinated regulation according to claim 2 is characterized in that: The process of short-term forecasting of the load of the target distribution network is as follows: Calculate the target distribution network in the future Load change rate at each moment , the expression is: in, is the time span of the short-term forecast, The target distribution network starts from the 7th day closest to the current one. Heaven Always in the future The forecast load at the time, The target distribution network starts from the 7th day closest to the current one. Heaven Always in the future Forecast load at the time; The load of the target distribution network is predicted based on the load change rate. The expression is: in, The target distribution network is currently Always looking to the future Short-term forecast load at the moment, The target distribution network is currently Always looking to the future Short-term forecast load at the moment.

4. The distribution network operation control method based on distribution network transfer and source-load coordinated regulation according to claim 2 is characterized in that: The transferable capacity of the interconnected distribution network is calculated as follows: in, To connect the distribution network The ability to transfer supplies at any time, is the rated capacity of the interconnection distribution network used for transfer, Interconnected distribution network for power transfer The upper limit of safety at any moment, Interconnected distribution network for power transfer The operating load rate at the moment.

5. The distribution network operation control method based on distribution network transfer and source-load coordinated regulation according to claim 4 is characterized in that: The process of calculating the control demand of the target distribution network is as follows: Based on the short-term forecast results of the target distribution network, the target distribution network is obtained. The maximum value of real-time load and short-term forecast load at the moment , the expression is: in, The target distribution network is currently Short-term forecast load at the moment, The target distribution network is currently Always looking to the future Short-term forecast load at the moment, The target distribution network is currently Always looking to the future Short-term forecast load at the moment; Calculate the control requirements of the target distribution network , the expression is: in, is the rated capacity of the target distribution network, It is the upper limit of safe operation of the load rate of the target distribution network.

6. The distribution network operation control method based on distribution network transfer and source-load coordinated regulation according to claim 5 is characterized in that: The process of determining whether the transferable capacity of the interconnected distribution network meets the control requirements of the target distribution network is as follows: if so, the load of the target distribution network is transferred to the interconnected distribution network, and the control is terminated; otherwise, the load of the target distribution network is transferred to the interconnected distribution network, and the difference between the control requirements of the target distribution network and the transferable capacity of the interconnected distribution network is calculated, and the source-load coordinated control is performed on the difference. The process is as follows: Determine the transferable capacity of the interconnected distribution network Whether the control requirements of the target distribution network are met ,like , then the load of the target distribution network is transferred to the interconnected distribution network, and the control is ended; like , then after the target distribution network transfers, source-load coordinated regulation is carried out, and the process is as follows: Construct a source-load coordinated control optimization model to The load gap is regulated, and the objective function is expressed as: in, The comprehensive cost of market users participating in demand response, for Time-of-use electricity prices at different times, The demand response subsidy standard is To control the time period set, is the set of non-regulated time periods, For the target distribution network The operating load at the moment, for The load that needs to be regulated in the target distribution network at the moment; The constraint expression is: in, is the maximum operating capacity of the target distribution network line, is the power factor, is the safe load rate boundary; in, For nodes The voltage amplitude is next, For nodes The voltage amplitude of the previous session; in, To pass the line The upper bound of the current amplitude; in, and are the peak and valley values ​​of regional load before regulation, and are the peak and valley values ​​of the region after regulation, respectively; in, and The load resources are Always adjust the upper and lower limits of potential; break down The load in the target distribution network that needs to be regulated at the moment , the expression is: in, is the charging load that needs to be regulated in the target distribution network, is the air conditioning load that needs to be regulated in the target distribution network. For large industrial loads that need to be regulated in the target distribution network, The energy storage load that needs to be regulated in the target distribution network, The photovoltaic output that needs to be regulated in the target distribution network, 、 、 、 、 are the resource existence factors of charging load, air conditioning load, large industrial load, energy storage load and photovoltaic output in the target distribution network; judge and If the size relationship between , then based on the charging load , air conditioning load , large industrial load , energy storage load , photovoltaic output to regulate; like , then the charging load , air conditioning load , large industrial load , energy storage load , photovoltaic output Multiply by the adjustment coefficient After the regulation, the expression is: 。 7. The distribution network operation control method based on distribution network transfer and source-load coordinated regulation according to claim 6 is characterized in that: The method further comprises: when the When , the target distribution network is subjected to power restriction operation, and the expression of the power restriction load is: 。 8. A distribution network operation control system based on distribution network transfer and source-load coordinated regulation, characterized in that: The system is used to implement the method of any one of claims 1 to 7, comprising: Load data acquisition unit, used to collect historical load data and real-time load data of the target distribution network and real-time load data of the interconnected distribution network; A short-term forecast result calculation unit is used to perform a short-term forecast on the load of the target distribution network based on the historical load data and real-time load data of the target distribution network, and obtain a short-term forecast result of the load of the target distribution network; The control demand calculation unit is used to calculate the transferable capacity of the interconnected distribution network based on the real-time load data of the interconnected distribution network; and calculate the control demand of the target distribution network based on the short-term forecast result of the target distribution network load and the real-time load data; The distribution network operation control unit is used to determine whether the transferable capacity of the interconnecting distribution network meets the regulation requirements of the target distribution network. If so, the load of the target distribution network is transferred to the interconnecting distribution network, and the regulation is ended; otherwise, the load of the target distribution network is transferred to the interconnecting distribution network, and the difference gap between the regulation requirements of the target distribution network and the transferable capacity of the interconnecting distribution network is calculated, and the source-load coordinated regulation is performed on the difference gap.

9. A computer device, characterized in that: The computer device includes a memory, a processor, and a computer program stored in the memory and executable by the processor. The processor executes the computer program to implement the method according to any one of claims 1 to 7.

10. A computer storage medium, characterized in that A computer program is stored thereon, the The computer program includes program instructions, and when the program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 7.

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