CN115528695B

CN115528695B - Power grid power scheduling method, device and storage medium

Info

Publication number: CN115528695B
Application number: CN202211483051.5A
Authority: CN
Inventors: 李衍新; 张金磊; 刘涛; 刘友恒; 梁子明; 朱建国
Original assignee: Yonglian Technology Changshu Co ltd
Current assignee: Yonglian Technology Changshu Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-06-30
Anticipated expiration: 2042-11-24
Also published as: CN115528695A

Abstract

The invention discloses a power grid power scheduling method, a device and a storage medium, wherein the method comprises the following steps: acquiring the current power of the power grid; if the current power grid is in the power protection interval, performing first scheduling processing on the power grid power of the power system so as to maintain the power grid power after the first scheduling processing in the power protection interval; and if the current power grid is outside the power protection interval, performing second scheduling processing on the power grid of the power system so as to recover the power grid after the second scheduling processing into the power protection interval. Therefore, the implementation of the invention can improve the compatibility of power scheduling of the power grid, thereby improving the reliability of the operation of the power grid.

Description

Power grid power scheduling method, device and storage medium

Technical Field

The present invention relates to the field of power systems, and in particular, to a method and apparatus for power grid power scheduling, and a storage medium.

Background

With the increasingly serious energy crisis and environmental problems, the reduction of the specific gravity of fossil energy in daily production and life and the improvement of the application of clean energy and renewable energy become important problems in the energy field. Therefore, in such a large background, clean energy sources such as solar energy and wind energy are increasingly used in electric power systems. The supply of natural energy sources such as solar energy, wind energy and the like has certain uncertainty and intermittence; therefore, the power system is often matched with the energy storage system. The energy storage system is used for balancing natural energy and load in a micro-grid, and can also be applied to peak clipping and valley filling, micro-grid dynamic capacity expansion, standby power supply and the like.

In order to ensure the normal operation of the power grid, the power system is provided with power scheduling capability so as to optimize the operation of the power system. At present, a power system mainly adopts a specific event to trigger control, and the specific event is associated with a corresponding processing operation, so that when the specific event is monitored, the corresponding processing operation is triggered.

However, the listing of specific events is always limited, resulting in limited power scheduling of the grid and low compatibility.

Disclosure of Invention

The technical problem to be solved by the invention is that the power dispatching of the power grid is limited and the compatibility is not high. Therefore, the invention provides a power grid power scheduling method, a device and a storage medium, which can improve the compatibility of power scheduling of a power grid, thereby improving the reliability of power grid operation.

To solve the above technical problem, a first aspect of the present invention discloses a power grid power scheduling method, where the method is applied to an electric power system, the electric power system includes a power grid, and the method includes:

acquiring the current power of the power grid;

if the current power grid is in the power protection interval, performing first scheduling processing on the power grid power of the power system so as to maintain the power grid power after the first scheduling processing in the power protection interval;

And if the current power grid is outside the power protection interval, performing second scheduling processing on the power grid of the power system so as to recover the power grid after the second scheduling processing into the power protection interval.

As an optional implementation manner, in the first aspect of the present invention, the electric power system further includes at least two object control groups connected to the electric network, and the performing a first scheduling process on the electric network power of the electric power system includes:

determining a first control priority corresponding to each object control group;

according to the first control priority corresponding to each object control group, determining whether each object control group meets a corresponding first condition in sequence until a first target object control group meeting the corresponding first condition is determined, wherein the first condition indicates that the power of the power grid can be maintained in the power protection interval after the object control group is controlled;

and performing first control processing on the first target object control group so as to perform first scheduling processing on the grid power of the power system through the first target object control group.

As an optional implementation manner, in a first aspect of the present invention, the power protection interval includes a first interval threshold and a second interval threshold, the first interval threshold is smaller than the second interval threshold, at least two object control groups include a source object control group, a container object control group, and a load object control group, the source object in the source object control group is used for providing power to the power grid, the container object in the container object control group is used for consuming power of the power grid and/or providing power to the power grid, the load object in the load object control group is used for consuming power of the power grid, and determining a first control priority corresponding to each object control group includes:

Determining that the first control priority of the container object control group is lower than the first control priority of the source object control group, and the first control priority of the container object control group is lower than the first control priority of the load object control group;

acquiring a first difference value between the current power grid and the first interval threshold value, and acquiring a second difference value between the current power grid and the second interval threshold value;

if the first difference value is smaller than the second difference value, the first control priority of the load object control group is higher than the first control priority of the source object control group;

and if the first difference value is larger than the second difference value, the first control priority of the source object control group is higher than the first control priority of the load object control group.

As an optional implementation manner, in the first aspect of the present invention, the first condition corresponding to the source object control group includes:

P _Smin ＜P _Sexp1 ＜P _Smax and P is _{S limit 1} ＜P _Sexp1 ＜P _{S limit 2} ；

P _Sexp1 Is the first current power P of the source object control group _S With a preset first power adjustment step length P _step1 And (3) summing; p (P) _Smax A second current power P corresponding to the container object control group _C Third current power P corresponding to the load object control group _L Positive correlation, and P _Smax With a first reference threshold P' _Gmin Negative correlation; p (P) _Smin A second current power P corresponding to the container object control group _C Third current power P corresponding to the load object control group _L Positive correlation, and P _Smin And a second reference threshold P' _Gmax Negative correlation;

and/or the number of the groups of groups,

the first condition corresponding to the load object control group includes:

P _Lmin ＜P _Lexp1 ＜P _Lmax ，P _{l limit 1} ＜P _Lexp1 ＜P _{L limit 2} ；

P _Lexp1 Is the third current power P corresponding to the load object control group _L And a preset second power adjustment step length P _step2 And (3) summing; p (P) _Lmax A first current power P with the source object control group _S And a second reference threshold P' _Gmax Positive correlation, and P _Lmax A second current power P corresponding to the container object control group _C Negative correlation; p (P) _Lmin A first current power P with the source object control group _S And a first reference threshold P' _Gmin Positive correlation, and P _Lmin A second current power P corresponding to the container object control group _C Negative correlation;

and/or the number of the groups of groups,

the first condition corresponding to the container object control group includes:

P _Cmin ＜P _Cexp1 ＜P _Cmax ，P _{c limit 1} ＜P _Cexp1 ＜P _{C limit 2} ；

P _Cmax Control with the source objectFirst current power P of the group _S And a second reference threshold P' _Gmax Positive correlation, and P _Cmax Third current power P corresponding to the load object control group _L Negative correlation; p (P) _Cmin A first current power P with the source object control group _S And a first reference threshold P' _Gmin Positive correlation, and P _Cmin Third current power P corresponding to the load object control group _L Negative correlation;

wherein the first interval threshold value P _Gmin < first reference threshold P' _Gmin < second reference threshold P' _Gmax < second interval threshold P _Gmax 。

As an optional implementation manner, in the first aspect of the present invention, the electric power system further includes at least two object control groups connected to the electric network, and the performing the second scheduling processing on the electric network power of the electric power system includes:

determining a second control priority corresponding to each object control group;

according to the second control priority corresponding to each object control group, determining whether each object control group meets a corresponding second condition in sequence until a second target object control group meeting the corresponding second condition is determined, wherein the second condition indicates that after the object control group is controlled, the power of the power grid can be recovered into the power protection interval;

performing second control processing on the second target object control group so as to perform second scheduling processing on the grid power of the power system through the second target object control group;

Wherein, the second condition corresponding to each object control group is related to the current power grid power.

As an alternative embodiment, in the first aspect of the present invention, the power protection interval includes a first interval threshold and a second interval threshold, the first interval threshold is smaller than the second interval threshold, the at least two object control groups include a source object control group, a container object control group and a load object control group, the source object in the source object control group is used for providing power to the power grid, the container object in the container object control group is used for consuming power of the power grid and/or providing power to the power grid, the load object in the load object control group is used for consuming power of the power grid, and the current power grid is greater than the second interval threshold;

the second condition corresponding to the source object control group includes:

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

P _Sexp2 A second current power P corresponding to the container object control group _C Third current power P corresponding to load object control group _L Positive correlation, and P _Sexp2 And a second reference threshold P' _Gmax Negative correlation;

and/or the number of the groups of groups,

the second condition corresponding to the load object control group includes:

P _{L limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

P _Lexp2 And a second reference threshold P' _Gmax And a first current power P of the source object control group _S Positive correlation, and P _Lexp2 A second current power P corresponding to the container object control group _C Negative correlation;

and/or the number of the groups of groups,

the second condition corresponding to the container object control group includes:

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

P _Cexp2 And a second reference threshold P' _Gmax And a first current power P of the source object control group _S Positive correlation, and P _Cexp2 Third current power P corresponding to the load object control group _L Negative correlation;

wherein the first interval threshold value P _Gmin < second reference threshold P' _Gmax < second interval threshold P _Gmax 。

As an alternative embodiment, in the first aspect of the present invention, the power protection interval includes a first interval threshold and a second interval threshold, the first interval threshold is smaller than the second interval threshold, the at least two object control groups include a source object control group, a container object control group and a load object control group, the source object in the source object control group is used for providing power to the power grid, the container object in the container object control group is used for consuming power of the power grid and/or providing power to the power grid, the load object in the load object control group is used for consuming power of the power grid, and the current power grid is smaller than the first interval threshold;

The second condition corresponding to the source object control group includes:

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

P _Sexp2 A second current power P corresponding to the container object control group _C Third current power P corresponding to load object control group _L Positive correlation, and P _Sexp2 With a first reference threshold P' _Gmin Negative correlation;

and/or the number of the groups of groups,

the second condition corresponding to the load object control group includes:

P _{l limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

P _Lexp2 With a first reference threshold P' _Gmin And a first current power P of the source object control group _S Positive correlation, and P _Lexp2 A second current power P corresponding to the container object control group _C Negative correlation;

and/or the number of the groups of groups,

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

P _Cexp2 With a first reference threshold P' _Gmin And a first current power P of the source object control group _S Positive correlation, and P _Cexp2 Third current power P corresponding to the load object control group _L Negative correlation;

wherein the first interval threshold value P _Gmin < first reference threshold P' _Gmin < second interval threshold P _Gmax 。

The second aspect of the invention discloses a power grid power dispatching device, which is applied to an electric power system, wherein the electric power system comprises an electric grid, and the device comprises:

the power acquisition module is used for acquiring the current power of the power grid;

The first processing module is used for carrying out first scheduling processing on the power grid power of the power system if the current power grid power is in a power protection interval, so that the power grid power after the first scheduling processing is maintained in the power protection interval;

and the second processing module is used for carrying out second scheduling processing on the power grid power of the power system if the current power grid power is outside the power protection interval, so that the power grid power after the second scheduling processing is recovered to the power protection interval.

As an alternative embodiment, in the second aspect of the present invention, the power system further includes at least two object control groups connected to the power grid, and the first processing module includes:

a first priority determining unit, configured to determine a first control priority corresponding to each of the object control groups;

a first control group determining unit, configured to sequentially determine, according to a first control priority corresponding to each of the object control groups, whether each of the object control groups meets a corresponding first condition until a first target object control group that meets the corresponding first condition is determined, where the first condition indicates that, after the object control groups are controlled, grid power of the grid can be maintained within the power protection interval;

And the first control processing unit is used for performing first control processing on the first target object control group so as to perform first scheduling processing on the grid power of the power system through the first target object control group.

As an alternative embodiment, in a second aspect of the present invention, the power protection interval comprises a first interval threshold and a second interval threshold, the first interval threshold being smaller than the second interval threshold, the at least two object control groups comprise a source object control group, a container object control group and a load object control group, the source object in the source object control group being used for providing power to the power grid, the container object in the container object control group being used for consuming power of the power grid and/or providing power to the power grid, the load object in the load object control group being used for consuming power of the power grid, the first priority determining unit being used for:

As an optional implementation manner, in the second aspect of the present invention, the first condition corresponding to the source object control group includes:

and/or the number of the groups of groups,

the first condition corresponding to the load object control group includes:

and/or the number of the groups of groups,

P _Cmax A first current power P with the source object control group _S And a second reference threshold P' _Gmax Positive correlation, and P _Cmax Third current power P corresponding to the load object control group _L Negative correlation; p (P) _Cmin A first current power P with the source object control group _S And a first reference threshold P' _Gmin Positive correlation, and P _Cmin Third current power P corresponding to the load object control group _L Negative correlation;

As an alternative embodiment, in a second aspect of the present invention, the second processing module includes:

a second priority determining unit, configured to determine a second control priority corresponding to each of the object control groups;

a second control group determining unit, configured to sequentially determine, according to a second control priority corresponding to each of the object control groups, whether each of the object control groups meets a corresponding second condition until a second target object control group that meets the corresponding second condition is determined, where the second condition indicates that, after the object control group is controlled, grid power of the grid can be restored to the power protection interval;

the second control processing unit is used for performing second control processing on the second target object control group so as to perform second scheduling processing on the grid power of the power system through the second target object control group;

As an alternative embodiment, in the second aspect of the present invention, the current grid power is greater than the second interval threshold;

The second condition corresponding to the source object control group includes:

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

and/or the number of the groups of groups,

the second condition corresponding to the load object control group includes:

P _{l limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

and/or the number of the groups of groups,

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

As an alternative embodiment, in the second aspect of the present invention, the current grid power is less than the first interval threshold;

the second condition corresponding to the source object control group includes:

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

and/or the number of the groups of groups,

the second condition corresponding to the load object control group includes:

P _{l limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

and/or the number of the groups of groups,

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

In a third aspect, the invention discloses another power dispatching device for a power grid, which comprises:

a memory storing executable program code;

a processor coupled to the memory;

the processor invokes the executable program code stored in the memory to execute the power grid power scheduling method disclosed in the first aspect of the present invention.

A fourth aspect of the invention discloses a computer-readable medium storing computer instructions which, when invoked, are adapted to carry out the grid power scheduling method disclosed in the first aspect of the invention.

Compared with the prior art, the embodiment of the invention has the following beneficial effects:

in the embodiment of the invention, the current power of the power grid is obtained; if the current power grid is in the power protection interval, performing first scheduling processing on the power grid power of the power system so as to maintain the power grid power after the first scheduling processing in the power protection interval; if the current power grid is outside the power protection interval, performing a second scheduling process on the power grid power of the power system, so that the power grid power after the second scheduling process is recovered to the power protection interval, that is, the embodiment can perform a corresponding scheduling process according to the current power grid power of the power grid, and the current power grid power of the power grid can be acquired under normal conditions, so that the scheduling process can be performed in real time according to the current power grid power of the power grid, and the power grid is basically maintained in the power protection interval. Therefore, the invention can be implemented to perform scheduling processing according to the current power of the power grid in real time, and can improve the compatibility of power scheduling of the power grid, thereby improving the running reliability of the power grid.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an application environment of a power scheduling method according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a power grid power scheduling method disclosed in the embodiment of the invention;

FIG. 3 is a schematic diagram of a power system according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of another power system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a power grid power dispatching device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another power grid power dispatching device according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms first, second and the like in the description and in the claims of the invention and in the above-described figures are used for distinguishing between different object controls and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or article that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or article.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The invention discloses a power grid power scheduling method, a device and a storage medium, which can improve the compatibility of power scheduling of a power grid. The following will describe in detail.

Referring to fig. 1, fig. 1 is a schematic diagram of an application environment of a power scheduling method according to an embodiment of the present invention. As shown in fig. 1, the power grid power dispatching method of the present embodiment may be applied to a power system, which may include a power grid 110, a new energy power generation device 120, a load device 130, and an energy storage device 140.

The new energy power generation device 120 includes, but is not limited to, one or more of photovoltaic power generation, wind power generation, tidal power generation, and the like. Load means 130, in physics means an electronic component connected in a circuit with a certain potential difference across it, means for converting electrical energy into other forms of energy; in electroengineering, the device for receiving electric energy in a circuit is a generic term for various electric appliances. The energy storage device 140 refers to a device that stores electrical energy or other energy sources.

Specifically, the power grid power dispatching device 150 monitors the power of the power grid 110, and performs dispatching processing according to the current power grid 110 power of the power grid 110, so that the power grid 110 can maintain a stable state to work.

It is understood that the power grid dispatching device 150 may be a terminal device with data processing capability, for example, a computer, a mobile terminal, or the like, and the power grid dispatching device 150 may also be a processor, for example, a chip, or the like, with data processing capability.

Example 1

Referring to fig. 2, fig. 2 is a flow chart of a power grid power scheduling method according to an embodiment of the invention. The power grid power scheduling method described in fig. 2 may be applied to a power grid power scheduling device, which is not limited by the embodiment of the present invention. As shown in fig. 2, the power grid power scheduling method may include the following operations:

step 210, obtaining the current grid power of the grid.

In this embodiment, the current power of the power grid may be obtained by monitoring the power of the power grid by the power monitoring device, and the latest monitored power obtained by monitoring by the power monitoring device is used as the current power of the power grid.

Step 220, judging whether the current grid power is in a power protection interval.

The power protection interval may be a power interval for distinguishing whether an abnormality occurs in the power grid. That is, if the current power of the power grid is within the power protection interval, it can be considered that no abnormality occurs in the power grid, and the operation state of the power grid can be optimized at this time; if the current power of the power grid is outside the power protection interval, the power grid can be considered to be abnormal, so that the running state of the power grid needs to be quickly regulated to be in a normal state. It will be appreciated that the power protection interval may be determined according to the power carrying capacity of the power grid, and is not specifically limited herein.

Specifically, the power protection interval includes a first interval threshold and a second interval threshold, where the first interval threshold is smaller than the second interval threshold, the first interval threshold is used as an interval lower limit of the power protection interval, and the second interval threshold is used as an interval upper limit of the power protection interval. For example, assuming that the power protection interval is [100KW,200KW ], the first interval threshold is 100KW and the second interval threshold is 200KW.

In this embodiment, if the current grid power is within the power protection interval, step 230 is executed; if the current grid power is outside the power protection interval, step 240 is performed.

And 230, performing a first scheduling process on the grid power of the power system, so that the grid power after the first scheduling process is maintained in the power protection interval.

Wherein the first scheduling process refers to a scheduling process that enables grid power to be maintained within a power protection interval. Optionally, through the first scheduling process, the operation state of the power grid can be further optimized, and the following embodiments will be further described.

And 240, performing second scheduling processing on the grid power of the power system, so that the grid power after the second scheduling processing is recovered to be within the power protection interval.

The second scheduling process refers to a scheduling process for enabling the power of the power grid to be restored to the power protection interval.

According to the technical scheme, the current power of the power grid is obtained; if the current power grid is in the power protection interval, performing first scheduling processing on the power grid power of the power system so as to maintain the power grid power after the first scheduling processing in the power protection interval; if the current power grid is outside the power protection interval, performing a second scheduling process on the power grid power of the power system, so that the power grid power after the second scheduling process is restored to the power protection interval, that is, the embodiment can perform the corresponding scheduling process according to the current power grid power of the power grid, and the current power grid power of the power grid can be acquired under normal conditions, so that the scheduling process can be performed in real time according to the current power grid power of the power grid, thereby enabling the power grid to be basically maintained in the power protection interval.

As can be seen from the description of the above embodiments, if the current power grid is within the power protection interval, the first scheduling process is required for the power grid; however, if the current grid power is outside the power protection interval, the second scheduling process needs to be performed on the grid power, so the following embodiments respectively describe how to perform the first scheduling process and how to perform the second scheduling process based on any of the above embodiments.

First, a description will be given of how to perform a first scheduling process for grid power of the power system.

Referring to fig. 3, fig. 3 is a schematic structural diagram of an electric power system according to an embodiment of the invention. As shown in fig. 3, the power system comprises a power grid and at least two object control groups connected to the power grid. Wherein each object control group can reduce the power of the power grid and/or can increase the power of the power grid.

In one possible implementation, performing a first scheduling process on grid power of the power system includes:

In this embodiment, the first control priorities corresponding to different object control groups are different.

For example, assume that at least two sets of control priorities include an object control group a and an object control group B, where the first control priority corresponding to the object control group a is higher than the first control priority corresponding to the object control group B.

In this example, first, whether the object control group a satisfies a corresponding first condition is determined, and if so, the object control group a is taken as a first target object control group, so that a first control process is performed on the object control group a; if the object control group a does not satisfy the corresponding second condition, it is determined whether the object control group B satisfies the corresponding first condition, and if so, the object control group B is set as the first target object control group.

It should be noted that, the first control priority corresponding to each object control group may be determined based on the importance of the influence of each object control group on the grid power.

It can be appreciated that the first control priority corresponding to each object control group is determined based on the influence importance of each object control group on the power of the power grid, and the first control priority corresponding to each object control group is determined; according to the first control priority corresponding to each object control group, determining whether each object control group meets a corresponding first condition in sequence until a first target object control group meeting the corresponding first condition is determined, wherein the first condition indicates that the power of the power grid can be maintained in the power protection interval after the object control group is controlled; and performing first control processing on the first target object control group so as to perform first scheduling processing on the power grid power of the power system through the first target object control group, wherein the first control priority corresponding to each object control group is determined based on the influence importance of each object control group on the power grid power, so that the stability and reliability of the power grid operation can be further improved.

Optionally, the at least two object control groups include a source object control group, a container object control group, and a load object control group. The source objects in the source object control group are used for providing power to the power grid, the container objects in the container object control group are used for consuming the power of the power grid and/or providing power to the power grid, and the load objects in the load object control group are used for consuming the power of the power grid.

Wherein the source object control group includes at least one source object that can act as an energy supply, and the source object may be, for example, but not limited to, a device capable of generating electricity using energy such as a photovoltaic power generation device, a wind power generation device, and a tidal power generation device. The container object control group comprises at least one container object, the container object has an energy storage function, not only can absorb electric energy of a power grid to store, but also can return the stored electric energy to the power grid to supply energy for the power grid, and the container object can be an energy storage device such as a lithium battery energy storage device, for example, but not limited to. The load object control group includes at least one load object that may act as an energy consumer, such as, but not limited to, a charging stake device, a high voltage direct current device, an office power object, a building power object, and the like.

It will be appreciated that all or part of the source objects associated with the grid may be configured as a source object control group as desired. Similarly, all or part of the container objects associated with the grid may be configured as a container object control group, as desired. Similarly, all or part of the load objects associated with the power grid may be configured as a load object control group according to need, and the embodiment is not limited.

Referring to fig. 4, fig. 4 is a schematic structural diagram of another power system according to an embodiment of the invention. As shown in fig. 4, the power system of the present embodiment includes a power grid, a source object control group, a container object control group, and a load object control group.

As can be seen from the schematic representation of FIG. 4, P _G +P _S =P _C +P _L 。

Wherein P is _G Representing the power of the electric network, P _S Representing the power of a control group of source objects, P _C The power of the container object group (power value +, charge; power value-, discharge) is denoted by P _L The load object controls the power of the group.

It will be appreciated that P _G 、P _S 、P _C And P _L The specific value of (2) can be obtained through monitoring by a power monitoring device.

In this embodiment, abstract combing is performed for the action of each control object action with respect to the power grid, and two opposite object action attributes of the power supply characteristic and the load characteristic are proposed, as shown in fig. 5, and the explanation is defined as follows:

(1) The control object acts to cause the power P of the power grid _G The result of the reduction, referred to as the power characteristic of the subject's action, is for example controlling the energy storage system to discharge, shutting down the secondary load;

(2) the control object acts to cause the power P of the power grid _G The result of this increase, known as the load characteristic of the subject's motion, is for example controlling the charging of the energy storage system, limiting the photovoltaic power.

Each control object group of the two attributes can be provided at the same time, but the attribute weights of different control objects are different. The attributes of the power characteristics and the load characteristics of the source, the container and the load control object group are given, and the control priority of the object group is decided according to the power characteristic weight and the load characteristic weight of the control object group in the process of unidirectional sequence control of the power (in a fast adjustment state), namely in the second scheduling process.

During the system is in the process of reciprocating cycle control (slow adjustment state), namely in the first scheduling process, the core idea is as follows: as much green energy (photovoltaic, wind energy, etc.) is used as possible, and the load is powered on as much as possible. Therefore, under the condition that the system meets the power limit, slowly increasing the output power of the control object of the source group, and closing a switch of the control object of the cut-off load group; the control object (energy storage device) of the container set is mainly used for peak clipping, valley filling, dynamic capacity expansion, residual energy storage and the like to improve economic benefits.

First, first control priorities of the source object control group, the container object control group, and the load object control group are explained.

In one possible implementation, determining a first control priority corresponding to each of the object control groups includes:

The first difference and the second difference can be regarded as a "risk indicator", wherein the smaller the first difference, the more dangerous is stated. Similarly, the smaller the second difference, the more dangerous the explanation. In this embodiment, if the first difference is smaller than the second difference, it indicates that the risk that the grid power is lower than the first interval threshold is higher than the risk that the grid power is higher than the second interval threshold; similarly, if the first difference is greater than the second difference, the risk that the power grid is lower than the first interval threshold is lower than the risk that the power grid is higher than the second interval threshold.

In this embodiment, the first control priority corresponding to the container object control group is the lowest among the three control groups of the source object control group, the container object control group, and the load object control group. And the first control priority level between the source object control group and the load object control group may be different in different cases. Specifically, if the first difference is smaller than the second difference, the first control priority of the load object control group is higher than the first control priority of the source object control group; and if the first difference value is larger than the second difference value, the first control priority of the source object control group is higher than the first control priority of the load object control group.

That is, in this embodiment, the first difference and the second difference are determined first, if the first difference is smaller than the second difference, it is determined whether the load object control group satisfies the corresponding first condition, if the load object control group satisfies the corresponding first condition, the load object control group is the first target control group, if the load object control group does not satisfy the corresponding first condition, it is determined whether the source object control group satisfies the corresponding first condition, if the source object control group satisfies the corresponding first condition, the source object control group is the first target control group, if the source object control group does not satisfy the corresponding first condition, it is determined whether the container object control group satisfies the corresponding first condition, and if the container object control group satisfies the corresponding first condition, the container object control group is the first target control group.

In addition, if the first difference is greater than the second difference, it is first determined whether the source object control group satisfies the corresponding first condition, if the source object control group satisfies the corresponding first condition, the source object control group is taken as the first target control group, if the source object control group does not satisfy the corresponding first condition, it is further determined whether the load object control group satisfies the corresponding first condition, if the load object control group satisfies the corresponding first condition, the load object control group is taken as the first target control group, if the load object control group does not satisfy the corresponding first condition, it is further determined whether the container object control group satisfies the corresponding first condition, and if the container object control group satisfies the corresponding first condition, the container object control group is taken as the first target control group.

Alternatively, if the first difference is equal to the second difference, the first control priority of the load object control group may be set to be higher than the first control priority of the source object control group, or the first control priority of the source object control group may be set to be higher than the first control priority of the load object control group, which is not limited herein.

It is to be understood that the determination of the first target object control group needs to be based on the first condition corresponding to each object control group, so the following embodiments describe the first condition corresponding to each object control group.

In one possible implementation, the first condition corresponding to the source object control group includes:

P _Sexp1 Is the first current power P of the source object control group _S With a preset first power adjustment step length P _step1 And (3) summing; p (P) _Smax A second current power P corresponding to the container object control group _C Third current power P corresponding to the load object control group _L Positive correlation, and P _Smax With a first reference threshold P' _Gmin Negative correlation; p (P) _Smin A second current power P corresponding to the container object control group _C Third current power P corresponding to the load object control group _L Positive correlation, and P _Smin And a second reference threshold P' _Gmax And (5) negative correlation.

Wherein P is _{S limit 1} May be the lowest power that the source object control group is capable of outputting. P (P) _{S limit 2} May be the highest power that the source object control group is capable of outputting.

Alternatively, P _Sexp1 =P _S +P _step1 ；P _Smax =P _C +P _L -P' _Gmin ；P _Smin =P _C +P _L -P' _Gmax 。

In this embodiment, if it is required to determine whether the source object control group meets the corresponding first condition, the first current power P of the source object control group is calculated _S With a preset first power adjustment step length P _step1 Sum P _Sexp1 And judge P _Smin ＜P _Sexp1 ＜P _Smax P _{S limit 1} ＜P _Sexp1 ＜P _{S limit 2} If so, the source object control group is described as meeting the corresponding first condition.

In one possible implementation, the first condition corresponding to the load object control group includes:

P _Lexp1 Is the third current power P corresponding to the load object control group _L And a preset second power adjustment step length P _step2 And (3) summing; p (P) _Lmax A first current power P with the source object control group _S And a second reference threshold P' _Gmax Positive correlation, and P _Lmax A second current power P corresponding to the container object control group _C Negative correlation; p (P) _Lmin A first current power P with the source object control group _S And a first reference threshold P' _Gmin Positive correlation, and P _Lmin A second current power P corresponding to the container object control group _C And (5) negative correlation.

Wherein P is _{L limit 1} May be the lowest power that the load object control group is capable of outputting. P (P) _{L limit 2} May be the highest power that the load object control group is capable of outputting.

Alternatively, P _Lexp1 =P _L +P _step2 ；P _Lmax =P _S +P' _Gmax -P _C ；P _Lmin =P _S +P' _Gmin -P _C 。

In this embodiment, if it is required to determine whether the load object control group satisfies the corresponding first condition, the third current power P of the load object control group is calculated _L With a second power adjustment step P _step2 Sum and judge P _Lmin ＜P _Lexp1 ＜P _Lmax ，P _{L limit 1} ＜P _Lexp1 ＜P _{L limit 2} If so, the load object control group is described as meeting the corresponding first condition.

In one possible implementation, the first condition corresponding to the container object control group includes:

wherein P is _{C limit 1} May be the lowest power that the container object control group is capable of outputting. P (P) _{C limit 2} May be the highest power that the container object control group is capable of outputting.

Alternatively, P _Cexp1 May be a predetermined desired value. P (P) _Cmax =P _S +P' _Gmax -P _L ；

P _Cmin =P _S +P' _Gmin -P _L 。

In this embodiment, if it is required to determine whether the container object control group satisfies the corresponding first condition, then determining P _Cmin ＜P _Cexp1 ＜P _Cmax ，P _{C limit 1} ＜P _Cexp1 ＜P _{C limit 2} If so, it is described whether the container object control group satisfies the corresponding first condition.

The performing the first control process on the first target object control group may include:

if the first target object control group is the load object control group, adjusting the step length P based on the second power _step2 Regulating the power of the load object control group to P _Lexp1 ；

If the first target object control group is the source object control group, adjusting the step length P based on the first power _step1 Adjusting the power of the source object control group to P _Sexp1 ；

If the first target object control group is a container object control group, adjusting the power of the container object control group to P _Cexp1 。

Specifically, each object control group has one adjustment power actuator, which will be described below.

(1) In the actuator of the container object control group, it is necessary to distribute desired power to each container member according to a certain distribution rule (average distribution, extremum matching, etc.), and convert the power value into the on-off state of the container member and a specific charge-discharge power value.

(2) In the execution mechanism of the source object control group, the expected power is required to be distributed to each source object member according to a certain distribution rule (average distribution, difference matching and the like), and the power value is converted into the on-off state and specific discharge power limit value of the source object member.

(3) In the actuator of the load target control group, it is necessary to convert the desired power into the state of each load switch according to the priority arrangement of the load.

In the technical solution of this embodiment, due to the first interval threshold P _Gmin < first reference threshold P' _Gmin < second reference threshold P' _Gmax < second interval threshold P _Gmax That is, in the embodiment, when the first scheduling process is performed to adjust the power of the power grid, in order to ensure that the power can be scheduled to the desired target, the threshold is adjusted to a certain extent, that is, the lowest threshold is adjusted to be higher, and the highest threshold is adjusted to be lower, so that the problem that the power adjustment of the control object group has errors, and the power adjustment cannot reach the desired target is avoided, and the accuracy of the first scheduling process is improved.

Next, an explanation will be given as to how to perform a second scheduling process for grid power of the power system.

In one possible implementation, performing a second scheduling process on grid power of the power system includes:

In this embodiment, the second control priorities corresponding to the different object control groups are different.

For example, assume that at least two sets of control priorities include an object control group a and an object control group B, where the second control priority corresponding to the object control group a is lower than the second control priority corresponding to the object control group B.

In this example, first, whether the object control group B satisfies the corresponding second condition is determined, and if so, the object control group B is taken as a second target object control group, so that a second control process is performed on the object control group B; if the object control group B does not satisfy the corresponding second condition, at this time, it is determined whether the object control group a satisfies the corresponding second condition, and if so, the object control group a is set as the second target object control group.

The second control priority corresponding to each object control group may be determined based on the importance of the influence of each object control group on the grid power, but the manner of determining the second control priority may be the same or different from the manner of determining the first control priority, and is not limited herein. That is, there may be a case where the first control priority corresponding to the object control group a is higher than the first control priority corresponding to the object control group B, but the second control priority corresponding to the object control group a is lower than the second control priority corresponding to the object control group B.

Optionally, the at least two object control groups of the present embodiment include a source object control group, a container object control group, and a load object control group.

Specifically, the second control priorities of the source object control group, the container object control group, and the load object control group may be set as needed, which is not limited herein.

It is to be understood that the determination of the second target object control group needs to be based on the first condition corresponding to each object control group, and thus the following embodiment describes the second condition corresponding to each object control group. Specifically, since the second condition corresponding to each of the object control groups relates to the magnitude of the current grid power, the following embodiments respectively describe the current grid power of different magnitudes.

Firstly, the current grid power is larger than the second interval threshold value.

In one possible implementation, the second condition corresponding to the source object control group includes:

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

P _Sexp2 A second current power P corresponding to the container object control group _C Third current power P corresponding to load object control group _L Positive correlation, and P _Sexp2 And a second reference threshold P' _Gmax And (5) negative correlation.

Alternatively, P _Sexp2 =P _C +P _L -P' _Gmax 。

In this embodiment, if it is required to determine whether the source object control group satisfies the corresponding second condition, P may be passed first _Sexp2 =P _C +P _L -P' _Gmax Calculating P _Sexp2 If P _{S limit 1} ＜P _Sexp2 ＜P _{S limit 2} And if so, the source object control group meets the corresponding second condition.

In one possible implementation, the second condition corresponding to the load object control group includes:

P _{l limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

P _Lexp2 And a second reference threshold P' _Gmax And a first current power P of the source object control group _S Positive correlation, and P _Lexp2 A second current power P corresponding to the container object control group _C And (5) negative correlation.

Alternatively, P _Lexp2 =P' _Gmax +P _S -P _C 。

In this embodiment, if it is required to determine whether the load object control group satisfies the corresponding second condition, the load object control group may pass through P _Lexp2 =P' _Gmax +P _S -P _C Calculating P _Lexp2 If P _{L limit 1} ＜P _Lexp2 ＜P _{L limit 2} And if so, the load object control group meets the corresponding second condition.

In one possible implementation, the second condition corresponding to the container object control group includes:

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

P _Cexp2 And a second reference threshold P' _Gmax And a first current power P of the source object control group _S Positive correlation, and P _Cexp2 Third current power P corresponding to the load object control group _L And (5) negative correlation.

Alternatively, P _Cexp2 =P' _Gmax +P _S -P _L 。

In this embodiment, if it is required to determine whether the container object control group satisfies the corresponding second condition, the container object control group may pass through P _Cexp2 =P' _Gmax +P _S -P _L Calculating P _Cexp2 If P _{C limit 1} ＜P _Cexp2 ＜P _{C limit 2} And if so, the container object control group meets the corresponding second condition.

Secondly, the current power grid is smaller than a first interval threshold value.

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

P _Sexp2 A second current power P corresponding to the container object control group _C Third current power P corresponding to load object control group _L Positive correlation, and P _Sexp2 With a first reference threshold P' _Gmin And (5) negative correlation.

Alternatively, P _Sexp2 =P _C +P _L -P' _Gmin 。

In this embodiment, if it is required to determine whether the source object control group satisfies the corresponding second condition, P may be passed first _Sexp2 =P _C +P _L -P' _Gmin Calculating P _Sexp2 If P _{S limit 1} ＜P _Sexp2 ＜P _{S limit 2} And if so, determining that the source object control group meets the corresponding second condition.

P _{l limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

P _Lexp2 With a first reference threshold P' _Gmin And a first current power P of the source object control group _S Positive correlation, and P _Lexp2 A second current power P corresponding to the container object control group _C And (5) negative correlation.

Alternatively, P _Lexp2 =P' _Gmin +P _S -P _C 。

In this embodiment, if it is required to determine whether the load object control group satisfies the corresponding second condition, the load object control group may pass through P _Lexp2 =P' _Gmin +P _S -P _C Calculating P _Lexp2 If P _{L limit 1} ＜P _Lexp2 ＜P _{L limit 2} And if so, determining that the load object control group meets the corresponding second condition.

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

P _Cexp2 With a first reference threshold P' _Gmin And a first current power P of the source object control group _S Positive correlation, and P _Cexp2 Third current power P corresponding to the load object control group _L And (5) negative correlation.

Alternatively, P _Cexp2 =P' _Gmin +P _S -P _L 。

In this embodiment, if it is required to determine whether the container object control group satisfies the corresponding second condition, the container object control group may pass through P _Cexp2 =P' _Gmin +P _S -P _L Calculating P _Cexp2 If P _{C limit 1} ＜P _Cexp2 ＜P _{C limit 2} And if so, determining that the container object control group meets the corresponding second condition.

In the technical solution of the present embodiment, due to the first interval threshold P _Gmin < first reference threshold P' _Gmin < second reference threshold P' _Gmax < second interval threshold P _Gmax That is, in the present embodiment, when the second scheduling process is performed to adjust the power of the power grid, in order to ensure that the power of the power grid can be restored to the power protection interval, the threshold is adjusted to a certain extent, that is, the lowest threshold is adjusted to be higher, and the highest threshold is adjusted to be lower, so that the problem that the power adjustment of the control object group has an error and cannot be restored to the power protection interval is avoided, and the accuracy of the second scheduling process is improved.

The performing the second control process on the second target object control group may include:

if the second target object control group is the load object control group, adjusting the power of the load object control group to P _Lexp2 ；

If the second target object control group is the source object control group, adjusting the power of the source object control group to P _Sexp2 ；

If the second target object control group is a container object control group,then the power of the container object control group is adjusted to P _Cexp2 。

It can be understood that, in this embodiment, the first conditions corresponding to each object control group and the second conditions corresponding to each object control group may be arranged and combined as required, which is not described herein.

Example two

Referring to fig. 5, fig. 5 is a schematic structural diagram of a power grid power dispatching device according to an embodiment of the present invention. As shown in fig. 5, the grid power scheduling apparatus may include a power acquisition module 510, a first processing module 520, and a second processing module 530, wherein:

a power obtaining module 510, configured to obtain a current grid power of the grid;

the first processing module 520 is configured to perform a first scheduling process on the power grid of the power system if the current power grid is within a power protection interval, so that the power grid after the first scheduling process is maintained within the power protection interval;

And the second processing module 530 is configured to perform a second scheduling process on the power grid power of the power system if the current power grid power is outside the power protection interval, so that the power grid power after the second scheduling process is restored to the power protection interval.

In a possible implementation, the power system further comprises at least two object control groups connected to the grid, the first processing module 520 comprising:

In a possible implementation, the power protection interval comprises a first interval threshold and a second interval threshold, the first interval threshold being smaller than the second interval threshold, the at least two object control groups comprising a source object control group, a container object control group and a load object control group, the source objects in the source object control group being used for providing power to the grid, the container objects in the container object control group being used for consuming power of the grid and/or providing power to the grid, the load objects in the load object control group being used for consuming power of the grid, the first priority determination unit being used for:

P _Sexp1 Is the first current power P of the source object control group _S And pre-treatment ofSet first power adjustment step P _step1 And (3) summing; p (P) _Smax A second current power P corresponding to the container object control group _C Third current power P corresponding to the load object control group _L Positive correlation, and P _Smax With a first reference threshold P' _Gmin Negative correlation; p (P) _Smin A second current power P corresponding to the container object control group _C Third current power P corresponding to the load object control group _L Positive correlation, and P _Smin And a second reference threshold P' _Gmax Negative correlation;

and/or the number of the groups of groups,

the first condition corresponding to the load object control group includes:

and/or the number of the groups of groups,

In one possible implementation, the second processing module 530 includes:

In one possible implementation, the current grid power is greater than the second interval threshold;

the second condition corresponding to the source object control group includes:

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

and/or the number of the groups of groups,

the second condition corresponding to the load object control group includes:

P _{l limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

and/or the number of the groups of groups,

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

In one possible implementation, the current grid power is less than the first interval threshold;

the second condition corresponding to the source object control group includes:

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

and/or the number of the groups of groups,

the second condition corresponding to the load object control group includes:

P _{l limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

and/or the number of the groups of groups,

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

Example III

Referring to fig. 6, fig. 6 is a schematic structural diagram of another power grid power dispatching device according to an embodiment of the present invention. As shown in fig. 6, the power grid power dispatching apparatus may include:

a memory 601 in which executable program codes are stored;

a processor 602 coupled to the memory 601;

the processor 602 invokes executable program code stored in the memory 601 to perform the steps in the grid power scheduling method described in the first embodiment of the present invention.

Example IV

The embodiment of the invention discloses a computer storage medium which stores computer instructions for executing the steps in the power grid power scheduling method described in the first embodiment of the invention when the computer instructions are called.

Example five

The present embodiment discloses a computer program product comprising a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform the steps of the grid power scheduling method described in the embodiment one.

The apparatus embodiments described above are merely illustrative, wherein the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the above technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product which may be stored in a computer readable storage medium comprising Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable rewritable Read-Only Memory (EEPROM), read-Only disk _C ompact Disc Read-Only Memory， _C D-ROM) or other optical disk storage, magnetic tape storage, or any other medium readable by a computer and usable to carry or store data.

Finally, it should be noted that: the embodiment of the invention discloses a power grid power scheduling method and device, which are disclosed by the embodiment of the invention only and are only used for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A power grid power dispatching method, characterized by being applied to a power system, the power system comprising a power grid, the power system further comprising at least two object control groups connected to the power grid, the at least two object control groups comprising a source object control group, a container object control group and a load object control group, the source object in the source object control group being used for providing power to the power grid, the container object in the container object control group being used for consuming power of the power grid and/or providing power to the power grid, the load object in the load object control group being used for consuming power of the power grid, the method comprising:

Acquiring the current power of the power grid;

if the current grid power is in the power protection interval, determining that the first control priority of the container object control group is lower than the first control priority of the source object control group, and the first control priority of the container object control group is lower than the first control priority of the load object control group;

acquiring a first difference value between the current power grid and a first interval threshold value, and acquiring a second difference value between the current power grid and a second interval threshold value;

if the first difference value is greater than the second difference value, the first control priority of the source object control group is higher than the first control priority of the load object control group;

The power protection interval comprises a first interval threshold value and a second interval threshold value, and the first interval threshold value is smaller than the second interval threshold value;

performing first control processing on the first target object control group to perform first scheduling processing on the power grid power of the power system through the first target object control group so as to maintain the power grid power after the first scheduling processing in the power protection interval;

the first scheduling process is a scheduling process enabling the power of the power grid to be maintained within a power protection interval;

if the current power grid is outside the power protection interval, performing second scheduling processing on the power grid power of the power system so as to recover the power grid power after the second scheduling processing into the power protection interval;

the second scheduling process is a scheduling process for enabling the power of the power grid to be restored to the power protection interval.

2. The method of claim 1, wherein the first condition corresponding to the source object control group comprises:

P _Sexp1 Is the first current power P of the source object control group _S With a preset first power adjustment step length P _step1 And (3) summing; p (P) _Smax A second current power P corresponding to the container object control group _C Third current power P corresponding to the load object control group _L Positive correlation, and P _Smax With a first reference threshold P' _Gmin Negative correlation; p (P) _Smin Is paired with the containerSecond current power P corresponding to the image control group _C Third current power P corresponding to the load object control group _L Positive correlation, and P _Smin And a second reference threshold P' _Gmax Negative correlation;

and/or the number of the groups of groups,

the first condition corresponding to the load object control group includes:

and/or the number of the groups of groups,

wherein the first interval threshold value P _Gmin < first reference threshold P' _Gmin < secondReference threshold P' _Gmax < second interval threshold P _Gmax 。

3. The method according to claim 1 or 2, wherein the power system further comprises at least two object control groups connected to the power grid, the second scheduling of the power grid power of the power system comprising:

4. A method according to claim 3, wherein the power protection interval comprises a first interval threshold and a second interval threshold, the first interval threshold being smaller than the second interval threshold, at least two object control groups comprising a source object control group, a container object control group and a load object control group, the source objects in the source object control group being used to provide power to the grid, the container objects in the container object control group being used to consume power of the grid and/or to provide power to the grid, the load objects in the load object control group being used to consume power of the grid, the current grid power being greater than the second interval threshold;

the second condition corresponding to the source object control group includes:

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

and/or the number of the groups of groups,

the second condition corresponding to the load object control group includes:

P _{l limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

and/or the number of the groups of groups,

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

5. The method according to claim 4, wherein the power protection interval comprises a first interval threshold and a second interval threshold, the first interval threshold being smaller than the second interval threshold, at least two object control groups comprising a source object control group, a container object control group and a load object control group, the source objects in the source object control group being used to provide power to the grid, the container objects in the container object control group being used to consume power of the grid and/or to provide power to the grid, the load objects in the load object control group being used to consume power of the grid, the current grid power being smaller than the first interval threshold;

The second condition corresponding to the source object control group includes:

P _{s limit 1} ＜P _Sexp2 ＜P _{S limit 2} ；

and/or the number of the groups of groups,

the second condition corresponding to the load object control group includes:

P _{l limit 1} ＜P _Lexp2 ＜P _{L limit 2} ；

and/or the number of the groups of groups,

P _{c limit 1} ＜P _Cexp2 ＜P _{C limit 2} ；

6. A power grid power dispatching device, characterized in that it is applied to a power system, the power system comprising a power grid, the power system further comprising at least two object control groups connected to the power grid, the at least two object control groups comprising a source object control group, a container object control group and a load object control group, the source object in the source object control group being used for providing power to the power grid, the container object in the container object control group being used for consuming power of the power grid and/or providing power to the power grid, the load object in the load object control group being used for consuming power of the power grid, the device comprising:

the first processing module is used for determining that the first control priority of the container object control group is lower than the first control priority of the source object control group if the current grid power is in a power protection interval, and the first control priority of the container object control group is lower than the first control priority of the load object control group; acquiring a first difference value between the current power grid and a first interval threshold value, and acquiring a second difference value between the current power grid and a second interval threshold value; if the first difference value is smaller than the second difference value, the first control priority of the load object control group is higher than the first control priority of the source object control group; if the first difference value is greater than the second difference value, the first control priority of the source object control group is higher than the first control priority of the load object control group;

according to the first control priority corresponding to each object control group, determining whether each object control group meets a corresponding first condition in sequence until a first target object control group meeting the corresponding first condition is determined, wherein the first condition indicates that the power of the power grid can be maintained in the power protection interval after the object control group is controlled; the power protection interval comprises a first interval threshold value and a second interval threshold value, and the first interval threshold value is smaller than the second interval threshold value; performing first control processing on the first target object control group to perform first scheduling processing on the power grid power of the power system through the first target object control group so as to maintain the power grid power after the first scheduling processing in the power protection interval; the first scheduling process is a scheduling process enabling the power of the power grid to be maintained within a power protection interval;

The second processing module is used for carrying out second scheduling processing on the power grid power of the power system if the current power grid power is outside the power protection interval, so that the power grid power after the second scheduling processing is recovered to the power protection interval; the second scheduling process is a scheduling process for enabling the power of the power grid to be restored to the power protection interval.

7. A power grid power dispatching apparatus, the apparatus comprising:

a memory storing executable program code;

a processor coupled to the memory;

the processor invokes the executable program code stored in the memory to perform the grid power scheduling method of any one of claims 1-5.

8. A computer-storable medium storing computer instructions that, when invoked, are adapted to perform the grid power scheduling method of any one of claims 1-5.