Power Optimization Control Method and System for AC-DC Hybrid Microgrid in Emergency Power Supply Scenario

Abstract

The present invention proposes a power optimization control method and system for an AC-DC hybrid microgrid in an emergency power supply scenario, which relates to the field of AC-DC microgrid control technology. It includes obtaining the equivalent droop characteristics of the AC frequency and DC voltage; assigning priority coefficients to the AC microgrid and the DC microgrid, and considering the power balance inside the AC-DC hybrid microgrid by the interconnection converter, defining the global deviation index of the AC-DC hybrid microgrid; solving the reference value of the output power of the interconnection converter when the global deviation index is minimized; calculating the actual value of the output power of the interconnection converter to realize the tracking of the actual value of the output power of the interconnection converter to the reference value of the output power of the interconnection converter. The present invention considers different droop coefficients of distributed generation units, establishes an optimal power dispatch model for the AC-DC hybrid microgrid; based on this model, a power control strategy for the interconnection converter is proposed, and the optimal power transmission value is solved, without a PI regulator, and has a faster response speed.

Description

Technical Field

[0001] The present invention belongs to the technical field of AC-DC hybrid microgrid and interconnection converter control, and particularly relates to a power optimization control method and system for an AC-DC hybrid microgrid in an emergency power supply scenario. Background Art

[0002] The AC-DC hybrid microgrid performs power scheduling through an interconnection converter to achieve mutual support and backup between sub-microgrids. During a power supply fault, the power transmission characteristics of the interconnection converter can be used to quickly rescue critical microgrids and maintain their power supply in an emergency state.

[0003] The inventor found that existing control schemes for interconnection converters mostly cooperate with the control within the sub-microgrid to achieve power balance of dispatchable power generation units. Among them, droop control controls the interconnection converter based on the droop characteristics of distributed power sources and local sampling information, but does not consider the priority level of the microgrid, and cannot guarantee the power supply stability and power quality of critical microgrids in emergency rescue situations.

[0004] The inventor also found that in terms of power scheduling optimization control of interconnection converters, existing schemes have established an optimal power transmission model for distributed generation units with the same droop coefficient. Through a PI controller, by adjusting the state deviation within the sub-microgrid, the minimization of the global deviation is achieved.

[0005] Existing power scheduling optimization schemes for interconnection converters track the given power reference value through a PI regulator, with a slow dynamic response speed. Moreover, their optimal power transmission model equates the droop characteristics of distributed generation nodes to the droop characteristics of the microgrid, which requires all distributed generation units within the sub-microgrid to have the same droop coefficient. Summary of the Invention

[0006] To overcome the deficiencies of the above-mentioned prior art, the present invention provides a power optimization control method and system for an AC-DC hybrid microgrid in an emergency power supply scenario, which considers different droop coefficients of distributed generation units and establishes an optimal power scheduling model for the AC-DC hybrid microgrid; based on this model, a power control strategy for the interconnection converter is proposed, and a power self-optimizing controller is adopted to solve for the optimal power transmission value, without the need for a PI regulator, and has a faster response speed.

[0007] To achieve the above object, one or more embodiments of the present invention provide the following technical solutions:

[0008] The first aspect of the present invention provides a power optimization control method for an AC-DC hybrid microgrid in an emergency power supply scenario.

[0009] The power optimization control method for an AC-DC hybrid microgrid in an emergency power supply scenario includes the following steps:

[0010] Taking into account the droop control of the AC microgrid and the droop control of the DC microgrid in the AC-DC hybrid microgrid, the equivalent droop characteristics of the AC frequency and the DC voltage are obtained;

[0011] Normalize the AC frequency and the DC voltage, assign priority coefficients to the AC microgrid and the DC microgrid, and consider the power balance of the interconnected converter in the AC-DC hybrid microgrid to define the global deviation index of the AC-DC hybrid microgrid;

[0012] Solve for the reference value of the output power of the interconnected converter when the global deviation index is minimized;

[0013] Calculate the actual value of the output power of the interconnected converter, and based on the designed droop controller, realize the tracking of the actual value of the output power of the interconnected converter to the reference value of the output power of the interconnected converter.

[0014] The second aspect of the present invention provides a power optimization control system for an AC-DC hybrid microgrid in an emergency power supply scenario.

[0015] The power optimization control system for an AC-DC hybrid microgrid in an emergency power supply scenario includes:

[0016] A hybrid microgrid droop characteristic generation module configured to: take into account the droop control of the AC microgrid and the droop control of the DC microgrid in the AC-DC hybrid microgrid to obtain the equivalent droop characteristics of the AC frequency and the DC voltage;

[0017] A global deviation index definition module configured to: normalize the AC frequency and the DC voltage, assign priority coefficients to the AC microgrid and the DC microgrid, and consider the power balance of the interconnected converter in the AC-DC hybrid microgrid to define the global deviation index of the AC-DC hybrid microgrid;

[0018] A power reference value solving module configured to: solve for the reference value of the output power of the interconnected converter when the global deviation index is minimized;

[0019] A power reference value tracking module configured to: calculate the actual value of the output power of the interconnected converter, and based on the designed droop controller, realize the tracking of the actual value of the output power of the interconnected converter to the reference value of the output power of the interconnected converter.

[0020] The third aspect of the present invention provides a computer-readable storage medium, on which a program is stored, and when the program is executed by a processor, the steps in the power optimization control method for an AC-DC hybrid microgrid in an emergency power supply scenario as described in the first aspect of the present invention are implemented.

[0021] In a fourth aspect of the present invention, there is provided an electronic device, including a memory, a processor, and a program stored on the memory and executable on the processor. When the processor executes the program, the steps in the AC-DC hybrid microgrid power optimization control method in the first aspect of the present invention are implemented.

[0022] The above one or more technical solutions have the following beneficial effects:

[0023] The present invention provides an AC-DC hybrid microgrid power optimization control method and system in an emergency power supply scenario, which considers different droop coefficients of distributed generation units, assigns different priority coefficients to the AC microgrid and the DC microgrid, defines the global deviation index of the AC-DC hybrid microgrid, solves the reference value of the output power of the interconnection converter when the global deviation index is minimized, and establishes an optimal power dispatch model for the AC-DC hybrid microgrid. The optimal power dispatch model considers the different droop coefficients of distributed nodes in the microgrid and has a wider application range; by obtaining the maximum transmission power and load data of each distributed generation unit, the global deviation of the AC-DC hybrid microgrid is minimized, and in the emergency power supply scenario, priority power support for critical microgrids can be achieved.

[0024] Based on the optimal power dispatch model, the present invention proposes a power optimization control strategy for the interconnection converter, adopts a power self-optimizing controller, solves the optimal power transmission value, and does not require a PI regulator, having a faster response speed.

[0025] Advantages of additional aspects of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0027] Figure 1 It is a structural diagram of an AC-DC hybrid microgrid.

[0028] Figure 2 It is a schematic diagram of the droop control of the AC microgrid.

[0029] Figure 3 It is a schematic diagram of the droop control of the DC microgrid.

[0030] Figure 4 It is a schematic diagram of the topology of the interconnection converter and the self-optimizing controller of the AC-DC hybrid microgrid. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention.

[0033] In the case of no conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0034] Embodiment 1

[0035] In the existing control scheme, droop control does not require communication and is widely used in distributed generation units within a microgrid and interconnection converters between microgrids, achieving global power balance in the microgrid system. However, it does not consider the load levels in different microgrids and is not suitable for emergency power supply scenarios.

[0036] In the existing power dispatch optimization scheme for interconnection converters, a PI regulator is used to track the given power reference value, and the dynamic response speed is slow. Moreover, its optimal power transmission model equates the droop characteristics of distributed generation nodes to the droop characteristics of the microgrid, which requires all distributed generation units within the sub-microgrid to have the same droop coefficient.

[0037] To address the above problems, this embodiment proposes a power optimization control method for an AC-DC hybrid microgrid in an emergency power supply scenario, which considers different droop coefficients of distributed generation units and establishes an optimal power dispatch model for the AC-DC hybrid microgrid. Based on this model, a power control strategy for the interconnection converter is proposed, and a power self-optimizing controller is adopted to solve for the optimal power transmission value without a PI regulator, having a faster response speed.

[0038] As Figure 1 shown, it is the structure diagram of the AC-DC hybrid microgrid adopted by the present invention, and the AC microgrid and the DC microgrid are connected through an interconnection converter.

[0039] The power optimization control method for the AC-DC hybrid microgrid in the emergency power supply scenario proposed in this embodiment may specifically include the following steps:

[0040] Comprehensively consider the droop control of the AC microgrid and the droop control of the DC microgrid in the AC-DC hybrid microgrid to obtain the equivalent droop characteristics of the AC frequency and the DC voltage;

[0041] Normalize the AC frequency and the DC voltage, assign priority coefficients to the AC microgrid and the DC microgrid, and consider the power balance within the AC-DC hybrid microgrid by the interconnection converter to define the global deviation index of the AC-DC hybrid microgrid;

[0042] Solve for the reference value of the output power of the interconnected converter when the global deviation index is minimized;

[0043] Calculate the actual value of the output power of the interconnected converter, and based on the designed droop controller, achieve the tracking of the actual value of the output power of the interconnected converter to the reference value of the output power of the interconnected converter.

[0044] Furthermore, this embodiment considers different droop coefficients of distributed generation units, assigns different priority coefficients to the AC microgrid and the DC microgrid, defines the global deviation index of the AC-DC hybrid microgrid, solves for the reference value of the output power of the interconnected converter when the global deviation index is minimized, and establishes an optimal power scheduling model for the AC-DC hybrid microgrid. In this embodiment, the distributed generation unit is the schedulable generation unit described below, and the two express the same meaning.

[0045] Next, the technical solution of this embodiment will be elaborated in detail from two aspects: the establishment of the optimal power scheduling model and the self-optimizing control method of the AC-DC hybrid microgrid.

[0046] 1. Establishment of the optimal power scheduling model

[0047] As Figure 2 shown, the droop control of the AC microgrid included in this embodiment is such that the schedulable generation unit adjusts the output voltage according to the droop characteristic, and the droop control can be expressed as:

[0048]

[0049] where f max and U max are respectively the maximum allowable frequency and voltage in the AC microgrid, P ac_i and Q ac_i are the active power and reactive power output by the schedulable generation unit i in the AC microgrid, f i * and U i * respectively represent the reference values of the output frequency and voltage amplitude of the schedulable generation unit i in the AC microgrid, m aci and n aci are the droop coefficients of the schedulable generation unit i in the AC microgrid, and their calculation formulas are:

[0050]

[0051] P ac_max and Q ac_max are the maximum output powers of all schedulable generation units in the AC microgrid, f min and U min are the minimum allowable frequency and voltage amplitude in the AC microgrid.

[0052] As shown Figure 3 in the figure, the droop control of the DC microgrid included in the present invention can be expressed as:

[0053]

[0054] where V max , V min are respectively the maximum and minimum voltages allowed in the DC microgrid, and m dci , P dc_i are respectively the droop coefficient and output power of the dispatchable power generation unit i in the DC microgrid.

[0055] Ignoring the line impedance and combining the droop equations of each distributed power generation unit in the sub-microgrid, the equivalent droop characteristics of the AC microgrid frequency and the DC microgrid bus voltage can be obtained:

[0056]

[0057] where N ac , N dc are respectively the numbers of dispatchable power generation units in the AC and DC microgrids, and m ac , m dc are respectively the equivalent droop coefficients of the AC and DC microgrids.

[0058] According to formula (4), it can be seen that when power fluctuations occur in the AC or DC microgrid, it will cause frequency or voltage deviations. When a fault occurs in the microgrid, the frequency and voltage deviate greatly from the rated values, directly affecting the power supply stability and power quality of the microgrid.

[0059] In order to unify the AC microgrid and the DC microgrid, the AC frequency and the DC voltage are normalized:

[0060]

[0061] where f pu , V pu are the normalized AC frequency and DC voltage. When the microgrid is operating normally, the allowable variation range is [-1, 1]. The normalized frequency and voltage values represent the state deviation of the real-time operation of the microgrid, which reflects the degree of deviation of the microgrid from the rated operation.

[0062] The interconnection converter conducts power transmission between the AC and DC microgrids, realizing the mutual assistance of the two microgrids, so that the side with smaller deviation provides power support for the other side. When the interconnection converter participates in the power scheduling between the microgrids, the power balance inside the microgrid can be expressed as:

[0063]

[0064] where Pac_load , P dc_load is the active load in the AC and DC microgrids, and P ILC is the power transmitted by the interconnection converter, with the inversion direction taken as positive.

[0065] To describe the influence of AC frequency and DC voltage on the stability of the AC-DC hybrid system, the global deviation index of the AC-DC hybrid microgrid is defined as:

[0066] G = ω 1 f 2 pu + ω 2 V 2 pu (7)

[0067] where ω 1 , ω 2 are the priority coefficients of the AC microgrid and the DC microgrid respectively. The sub-microgrid containing important loads has a larger priority coefficient. The control objective of the present invention is to minimize the global deviation coefficient by controlling the power transmitted by the interconnection converter.

[0068] When there is a power deficit or surplus in the AC-DC hybrid system, power scheduling gives priority to the sub-microgrid with a larger priority coefficient to ensure the high-quality continuous power supply of important loads. Especially when faults and extreme disasters occur and there is a large power shortage in the AC-DC hybrid microgrid, the interconnection converter controller autonomously chooses to sacrifice the sub-microgrid with a lower power supply priority to ensure the power quality of the sub-microgrid with a higher priority level.

[0069] Substituting Formula (4) and Formula (6) into Formula (7), the relationship between the global deviation index and the power transmitted by the interconnection converter can be obtained as:

[0070]

[0071] It can be seen from Formula (8) that the optimization objective G of the present invention is a quadratic function of the optimization variable, the power transmitted by the interconnection converter P ILC . There is a minimum value. Taking the partial derivative of it, the solution can be obtained as:

[0072]

[0073] where P ILC_ref is the given value of the power transmitted by the interconnection converter, that is, the reference value of the output power of the interconnection converter mentioned later

[0074] When the power transmitted by the interconnection converter satisfies Formula (9), the global deviation index G of the AC-DC hybrid microgrid can obtain the minimum value.

[0075] 2. Self-optimizing control method for AC-DC hybrid microgrid

[0076] As shown Figure 4 in the figure, it is the self-optimizing controller of the interconnected converter designed by the present invention, where the droop controller can be expressed as:

[0077]

[0078] Where represents the reference frequency and voltage of the interconnected converter, f * , U * represents the rated frequency and voltage of the interconnected converter, P ILC , Q ILC are respectively the actual output power of the interconnected converter, k p , k i are the PI controller parameters, n ILC is the reactive power droop coefficient, is the reference value of the output power of the interconnected converter. This controller can achieve the zero-error tracking of the output power to the reference power shown in formula (9).

[0079] Using the above self-optimizing controller of the interconnected converter for power optimization control of the AC-DC hybrid microgrid in the emergency power supply scenario specifically includes:

[0080] Step 1: The interconnected converter controller obtains the total load power in the AC and DC microgrids through communication or load prediction data.

[0081] Calculate the total load power in the AC microgrid, which is Figure 4 in which P ac_load is calculated using U ac_load and I ac_load ;

[0082] Calculate the total load power in the AC microgrid, which is Figure 4 in which P dc_load is calculated using V dc_load and I dc_load .

[0083] Step 2: Substitute the load power obtained in Step 2 and the preset maximum DC and AC output power values into formula (9) to calculate the reference value P ILC_ref of the output power of the interconnected converter.

[0084] Step 3: The interconnected converter controller samples the AC port voltage and current and calculates the actual values P ILC , Q ILC of the output power.

[0085] Step 4: Feed the reference value and the actual value of the output power obtained in Step 2 and Step 3 into the droop controller to generate the reference value And send the reference voltage to the voltage-current double closed-loop controller of the interconnected converter to track the reference voltage.

[0086] The AC-DC hybrid microgrid power self-optimizing controller proposed in this embodiment can be applied to normal operation and fault conditions. When a fault occurs, there is no need to perform mode switching. During normal operation, the power supply stability of each sub-microgrid can be maintained; in the event of a fault, the dispatchable sources in the system are scarce, and the interconnected converter is used to provide emergency rescue for the power supply of important loads until the fault is eliminated, and the AC-DC hybrid microgrid cluster resumes to the rated operation state.

[0087] Embodiment 2

[0088] This embodiment discloses an AC-DC hybrid microgrid power optimization control system in an emergency power supply scenario.

[0089] The AC-DC hybrid microgrid power optimization control system in an emergency power supply scenario includes:

[0090] A hybrid microgrid droop characteristic generation module, configured to: comprehensively consider the AC microgrid droop control and DC microgrid droop control in the AC-DC hybrid microgrid to obtain the equivalent droop characteristics of the AC frequency and DC voltage;

[0091] A global deviation index definition module, configured to: normalize the AC frequency and DC voltage, assign priority coefficients to the AC microgrid and DC microgrid, and consider the power balance inside the AC-DC hybrid microgrid by the interconnected converter to define the global deviation index of the AC-DC hybrid microgrid;

[0092] A power reference value solving module, configured to: solve the power reference value of the output of the interconnected converter when the global deviation index is minimized;

[0093] A power reference value tracking module, configured to: calculate the actual value of the output power of the interconnected converter, and based on the designed droop controller, realize the tracking of the actual value of the output power of the interconnected converter to the power reference value of the output of the interconnected converter.

[0094] Embodiment 3

[0095] The purpose of this embodiment is to provide a computer-readable storage medium.

[0096] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it realizes the steps in the AC-DC hybrid microgrid power optimization control method in Embodiment 1 of the present disclosure.

[0097] Embodiment 4

[0098] The purpose of this embodiment is to provide an electronic device.

[0099] An electronic device, comprising a memory, a processor, and a program stored on the memory and executable on the processor, wherein when the processor executes the program, the steps in the AC-DC hybrid microgrid power optimization control method in the emergency power supply scenario described in Embodiment 1 of the present disclosure are implemented.

[0100] In the devices of the above Embodiments 2, 3, and 4, the steps involved correspond to those in Method Embodiment 1. For specific implementation manners, reference may be made to the relevant description part of Embodiment 1. The term "computer-readable storage medium" should be understood to include a single medium or multiple media including one or more instruction sets; it should also be understood to include any medium that can store, encode, or carry an instruction set for execution by a processor and enable the processor to execute any method in the present invention.

[0101] Those skilled in the art should understand that the above-mentioned modules or steps of the present invention can be implemented by a general-purpose computer device. Optionally, they can be implemented by program codes executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be separately fabricated into individual integrated circuit modules, or multiple modules or steps among them can be fabricated into a single integrated circuit module for implementation. The present invention is not limited to any specific combination of hardware and software.

[0102] Although the specific implementation manners of the present invention have been described above in conjunction with the accompanying drawings, it is not a limitation on the protection scope of the present invention. Those skilled in the art should understand that based on the technical solutions of the present invention, various modifications or deformations that can be made without creative efforts by those skilled in the art are still within the protection scope of the present invention.

Claims

1. A power optimization control method for an AC / DC hybrid microgrid in an emergency power supply scenario, characterized in that: The following steps are involved: Considering the AC microgrid droop control and the DC microgrid droop control in the AC / DC hybrid microgrid, the equivalent droop characteristics of AC frequency and DC voltage are obtained. The AC frequency and DC voltage are normalized, priority coefficients are assigned to the AC microgrid and the DC microgrid, and the power balance of the AC / DC hybrid microgrid by the interconnected converter is considered to define the global deviation index of the AC / DC hybrid microgrid. The global deviation index of the AC / DC hybrid microgrid is specifically: ； in, ω 1. ω 2 are the priority coefficients of AC microgrid and DC microgrid respectively; , It is the active load in AC and DC microgrid; The power transmitted by the interconnected converter; , are the maximum output power of the dispatchable power generation unit respectively; Solve the interconnected converter output power reference value that minimizes the global deviation index, specifically: Optimization objective G For optimizing the power transfer of variable interconnected converters P ILC The quadratic function has a minimum value. Taking partial differentials, we get the solution: in, P ILC_ref is the transmission power given value of the interconnected converter, which is equal to the output power reference value of the interconnected converter; The actual value of the output power of the interconnected converter is calculated, and the output power reference value and the actual value of the interconnected converter are input into the droop controller to generate the output voltage reference value of the interconnected converter; the output voltage reference value of the interconnected converter is input into the voltage-current dual closed-loop controller of the interconnected converter to track the output voltage reference value of the interconnected converter.

2. The AC / DC hybrid microgrid power optimization control method in the emergency power supply scenario according to claim 1 is characterized in that: The AC microgrid droop control is expressed as: ； in, f max , U max are the maximum frequency and voltage allowed in the AC microgrid respectively; , A dispatchable power generation unit in an AC microgrid i The active power and reactive power of , Represent the dispatchable power generation units i Reference values ​​of output frequency and voltage amplitude; m aci , n aci A dispatchable power generation unit in an AC microgrid i The droop coefficient.

3. The AC / DC hybrid microgrid power optimization control method in the emergency power supply scenario according to claim 2 is characterized in that: The DC microgrid droop control is expressed as: ； in, V max , V min are the maximum and minimum voltages allowed in the DC microgrid, respectively; m dci , They are dispatchable generating units in the DC microgrid. i The droop coefficient and output power.

4. The AC / DC hybrid microgrid power optimization control method in the emergency power supply scenario according to claim 3 is characterized in that: The droop equations of each distributed generation unit in the AC microgrid and the DC microgrid are combined to obtain the equivalent droop characteristics of AC frequency and DC voltage: in, N ac , N dc are the number of dispatchable generating units in the AC and DC microgrids, respectively; m ac , m dc The equivalent droop coefficients of AC and DC microgrids respectively.

5. The AC / DC hybrid microgrid power optimization control method in the emergency power supply scenario according to claim 1, characterized in that: The droop controller is expressed as: in, , Indicates the reference frequency and voltage of the interconnected converter; , Indicates the rated frequency and voltage of the interconnected converter; , are the actual output powers of the interconnected converters respectively; , are the PI controller parameters, is the reactive power droop coefficient; It is the output power reference value of the interconnected converter.

6. An AC / DC hybrid microgrid power optimization control system in an emergency power supply scenario, characterized by comprising: The hybrid microgrid droop characteristic generation module is configured to: comprehensively consider the AC microgrid droop control and the DC microgrid droop control in the AC / DC hybrid microgrid to obtain the equivalent droop characteristics of the AC frequency and the DC voltage; The global deviation index definition module is configured to: normalize the AC frequency and the DC voltage, assign priority coefficients to the AC microgrid and the DC microgrid, and consider the power balance of the interconnected converters within the AC / DC hybrid microgrid to define the global deviation index of the AC / DC hybrid microgrid. The global deviation index of the AC / DC hybrid microgrid is specifically: ； in, ω 1. ω 2 are the priority coefficients of AC microgrid and DC microgrid respectively; , It is the active load in AC and DC microgrid; The power transmitted by the interconnected converter; , are the maximum output power of the dispatchable power generation unit respectively; The power reference value solving module is configured to solve the output power reference value of the interconnected converter that minimizes the global deviation index, specifically: the optimization target G For optimizing the power transfer of variable interconnected converters P ILC The quadratic function has a minimum value. Taking partial differentials, we get the solution: in, P ILC_ref is the transmission power given value of the interconnected converter, which is equal to the output power reference value of the interconnected converter; The power reference value tracking module is configured to: calculate the actual value of the output power of the interconnected converter, input the output power reference value and the actual value of the interconnected converter into the droop controller, and generate the output voltage reference value of the interconnected converter; input the output voltage reference value of the interconnected converter into the voltage-current dual closed-loop controller of the interconnected converter, and track the output voltage reference value of the interconnected converter.

7. A computer-readable storage medium having a program stored thereon, characterized in that: When the program is executed by a processor, the steps of the AC / DC hybrid microgrid power optimization control method in an emergency power supply scenario are implemented.

8. An electronic device comprising a memory, a processor, and a program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps in the AC / DC hybrid microgrid power optimization control method in the emergency power supply scenario are implemented as described in any one of claims 1 to 5.

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