WO2021238542A1

WO2021238542A1 - Load prediction method and system for distributed fa simulation system

Info

Publication number: WO2021238542A1
Application number: PCT/CN2021/089683
Authority: WO
Inventors: 徐渊明; 张继锋; 朱小丽; 戴景峰; 秦明辉; 姚同生; 王网; 刘金圣
Original assignee: 科大智能科技股份有限公司
Priority date: 2020-05-29
Filing date: 2021-04-25
Publication date: 2021-12-02
Also published as: CN111680375B; CN111680375A

Abstract

Disclosed are a load prediction method and system for a distributed FA simulation system, which method and system belong to the technical field of data processing. The method comprises: drawing a corresponding line topological graph according to a line relationship of an actual circuit to be simulated, and configuring a relevant attribute for each pixel on the line topological graph, so as to obtain a topological graph used for performing load prediction; traversing each pixel on the topological graph used for performing load prediction, and screening out all power source pixels, so as to obtain a power source pixel list; generating, according to the power source pixel list, a tree structure storage list that takes each power source pixel in the power source pixel list as a father node, wherein a tree structure stores a positional relationship between pixels in the topological graph and pixel attributes; and traversing the tree structure storage list, and calculating a device telemetry value on a line. According to the present invention, after the relevant configurations are completed in a simulation system, a load generated by a line during a test is understood in advance, and specific protection measures are added for hardware, thereby ensuring that damage caused by an overload output does not occur on a hardware circuit.

Description

A Load Forecasting Method and System for Distributed FA Simulation System

Technical field

The present invention relates to the technical field of data processing, in particular to a load forecasting method and system for a distributed FA simulation system.

Background technique

With the development of my country’s economy and the improvement of people’s living standards, the society as a whole has an increasing demand for power resources. On the basis of fully clarifying the weaknesses in the operation of the power grid, the overall operation mode of the intelligent distribution network is further optimized to reduce the incidence of power outages, and in the case that power outages cannot be completely avoided, the scope of power outages is minimized In a controllable range, reduce the losses of both users and power supply companies.

Principles and characteristics of intelligent distributed FA: The intelligent distributed power distribution terminal realizes information interaction with a designated intelligent distributed power distribution terminal in the same power supply loop through the high-speed communication network, and automatically realizes fault location and fault isolation according to preset conditions , Non-faulty area recovery can achieve rapid fault isolation and self-healing, greatly reducing the incidental power outages of fault-free lines, narrowing the scope of faulty power outages, and shortening the power outage time of users, thereby improving the reliability of power supply for the users and improving the power grid The safe operating factor.

Because of the above characteristics of intelligent distributed FA, it is bound to be widely used in intelligent distribution networks in the future, and has a good prospect of promotion and application. At present, all FA schemes are in the trial stage and have not yet reached the practical stage. Since the handling mechanism of various FA schemes abnormal conditions has not yet reached reliable verification, it is necessary to build a related physical simulation system to simulate various topological structures and various types of failures to verify the reliability of related FA schemes.

At present, the simulation systems are still in the initial stage, and the handling of complex abnormal situations is still in the groping stage. One of the complex environments is that the load is not transferred, which requires the simulation system to perform load forecasting.

Summary of the invention

The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and perform load forecasting of the FA simulation system.

To achieve the above objectives, the present invention adopts a distributed FA simulation system load forecasting method, which includes the following steps:

Power source primitive list building unit

Further, each graphic element type on the line topology diagram includes at least a power graphic element, a load graphic element, and a switch graphic element, and each graphic element on the line topology diagram is configured with related attributes to obtain a topology diagram for load forecasting, include:

Configure the input voltage attributes of the power supply primitives;

Configure the load value attributes of various types of primitives according to the actual equipment resistance value;

Configure the state attribute of the switch graphic element, and the state attribute includes the open state of the contact switch and the closed state of the break switch.

Further, the traversing each graphic element on the topology diagram used for load forecasting, filtering out all power graphic elements, and obtaining a power graphic element list, includes:

Obtain each graphic element information on the topological graph through the QGraphicsScene::items() standard interface to obtain a graphic element information list;

Traverse the graphic element information list, filter out power graphic elements according to the attributes corresponding to the graphic element type, and obtain the power graphic element list.

Further, the generating a tree storage list with each power supply graphic element in the power supply graphic element list as a parent node according to the power supply graphic element list, and the tree structure stores the position relationship of the topological graphic graphic elements and graphic element attributes, including:

a1) Traverse the power source primitives in the list of power source primitives as the starting point of the main circuit and save them as the parent node of the tree structure;

b1) Determine whether the ID of the next graphic element is stored in the current graphic element attribute, if yes, perform step c1), if otherwise, perform step d1);

c1) Add the next graphic element as a child node of the tree structure, and execute the step b1);

d1) End the search, and execute the step a1);

e1) After the power source graphic element list is empty, the query is ended, and the tree structure storage list is generated.

Further, the traversing the tree structure storage list and calculating the telemetry value of the device on the line includes:

a2) In the tree structure storage list, take the power supply primitive as the parent node as the first level, and obtain the next level of the parent node according to the next-level node ID attribute list stored in the power supply primitive attribute If the number of child nodes is zero, execute step b2), if the number of child nodes is one, execute step c2), if the number of child nodes is greater than one, execute step f2);

b2) There is no need to calculate the line load for the line unloaded equipment with the power source graphic element as the parent node;

c2) The line with the power source graphic element as the parent node is the main line level, then the load value of the child node belongs to the main line, judge whether the child node is a switch graphic element, if yes, proceed to step d2), if otherwise, proceed to step e2) ；

d2) When the switch graphic element state is time-sharing, the switch graphic element is used as the last node of the main line, and the telemetry value of the equipment on the line is calculated. When the switch graphic element state is closed, the next level node stored in the switch graphic element attribute The ID attribute list obtains the number of child nodes contained in the next level of the child node, and then repeats step a2) with the switch graphic element as the parent node;

e2) The node is a load graphic element. According to the next-level node ID attribute list stored in the load graphic element attribute, the number of child nodes contained in the next level of the child node is obtained, and then the load graphic element is used as the parent node to repeat step a2 );

f2) The line with the power source element as the parent node is the branch line level, each child node represents a branch line, and the load of the child node belongs to the corresponding branch line. The telemetry value of the equipment on the line is calculated according to the load of each branch line, and then the branch line is judged Whether the branch node of is a switch graphic element, if yes, go to step g2), if not, go to step h2);

g2) When the switch graphic element state is time-sharing, the branch node is the last node of the branch line, and the branch load is the switch graphic element load; when the switch graphic element state is on, the next level stored in the switch graphic element attribute The node ID attribute list can get the number of child nodes contained in the next level of the branch node, and then repeat step a2) with the branch node as the parent node;

h2) The node is a load graphic element, the load value belongs to the branch line, the total load of the branch line increases the load value of the graphic element configuration, and the next level of the child node is obtained according to the next level node ID attribute list stored in the graphic element attribute The number of child nodes included, and then repeat step a2) with the graphic element as the parent node;

i2) Take another power supply graphic element in the tree structure storage list as the parent node and repeat step a2) until all power supply graphic elements are traversed.

Further, in the step d2), when the state of the switch graphic element is time-sharing, the switch graphic element is used as the final node of the main line to calculate the remote measurement value of the equipment on the line, including:

Calculate the main line load Rz=Rj1, main line load current Iz=U/Rz, node load current Ij1=Iz, node load voltage Uj1=Ij1×Rj1; where Rj1 is the node load value and U is the input voltage of the configuration .

Further, in the step f2), the line with the power source graphic element as the parent node is the branch line level, each child node represents a branch line, the load of the child node belongs to the corresponding branch line, and the line is calculated according to the load of each branch line Equipment telemetry values, including:

According to the formula 1/Rf1=1/Rn1f1+1/Rn1f2+...+1/Rn1fn, the equivalent load Rf1 of the branch line is calculated, then the main line load Rz=Rf1, and the main line load current Iz=U/Rf1; where , Rn1f1~Rn1fn represent the equivalent load of each branch, and U is the input voltage of the configuration;

Since the branch lines are connected in parallel to the main line, the voltage of each branch line is Un1f1=Un1f2=...=Un1fn=U, the load current of the branch line is In1f1=Un1f1/Rn1f1, and the current of each branch line is In1f1～In1fn.

On the other hand, a distributed FA simulation system load forecasting system is adopted, which includes: a topology drawing module, a power source primitive list building module, a tree structure storage list building module, and a load forecasting module. Among them:

The topology drawing module is used to draw the corresponding line topology diagram according to the line relationship of the actual circuit to be simulated, and configure relevant attributes for each graphic element on the line topology diagram to obtain a topology diagram for load forecasting;

The power supply graphic element list construction module is used for traversing each graphic element on the topological map used for load forecasting, filtering out all the power supply graphic elements, and obtaining a power supply graphic element list;

The tree structure storage list building module is used to generate a tree storage list with each power supply primitive in the power supply primitive list as the parent node according to the power supply primitive list, and the tree structure stores the position relationship of the topological map primitives and the primitive attributes ；

The load forecasting module is used to traverse the tree structure storage list and calculate the telemetry value of the equipment on the line.

Further, each graphic element type on the line topology diagram includes at least a power graphic element, a load graphic element, and a switch graphic element, the attributes of the power graphic element are input voltage attributes and load value attributes, and the attributes of the load graphic element Is a load value attribute, and the attributes of the switch graphic element are a state attribute and a load value attribute;

The tree structure storage list construction module includes a traversal unit, a judgment unit, an execution unit, and a storage list construction unit, wherein:

The traversal unit is used to traverse the power supply primitives in the list of power supply primitives as the starting point of the main circuit and store them as the parent node of the tree structure;

The judging unit is used to determine whether the ID of the next graphic element is stored in the attribute of the current graphic element;

The execution unit is used to add the next graphic element as a child node of the tree structure when the output result of the judgment unit is yes, and control the judgment unit to restart;

The execution unit is used to end the search when the output result of the judgment unit is no, and control the traversal unit to restart;

The storage list construction unit is used for ending the query after the power source graphic element list is empty, and generating the tree structure storage list.

Further, the power supply graphic element list construction module includes an interface unit and a power supply graphic element list construction unit, wherein:

The interface unit is used to obtain the graphic element information on the topological graph through the QGraphicsScene::items() standard interface to obtain the graphic element information list;

The power source graphic element list construction unit is used to traverse the graphic element information list, filter out power source graphic elements according to the attributes corresponding to the graphic element type, and obtain the power source graphic element list.

Compared with the prior art, the present invention has the following technical effects: After the distributed FA simulation system is configured with relevant settings, the present invention calculates the remote measurement value of each load point of the distributed FA fault simulation circuit, and obtains that the line is under test. The theoretical load value of each load point in order to add protective measures to the hardware to ensure that the hardware circuit will not be damaged due to overload output, and the test results generated by the current configuration can be theoretically predicted to improve The safety and stability of power system operation.

Description of the drawings

The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings:

Figure 1 is a flowchart of a load forecasting method for a distributed FA simulation system;

Figure 2 is a schematic diagram of the load forecasting method of the distributed FA simulation system;

Figure 3 is the overall flow chart of the distributed FA simulation system load forecasting method;

Figure 4 is a structural diagram of a distributed FA simulation system load forecasting system.

Detailed ways

In order to further explain the features of the present invention, please refer to the following detailed description of the present invention and the accompanying drawings. The attached drawings are for reference and explanation purposes only, and are not used to limit the protection scope of the present invention.

As shown in Figures 1 to 3, this embodiment discloses a method for load prediction of a distributed FA simulation system, which includes the following steps S1 to S4:

S1, according to the line relationship of the actual circuit to be simulated, draw the corresponding line topology diagram, and configure relevant attributes for each graphic element on the line topology diagram to obtain a topology diagram for load forecasting;

S2. Traverse each graphic element on the topology diagram used for load forecasting, filter out all power graphic elements, and obtain a list of power graphic elements;

S3. According to the power supply graphic element list, generate a tree storage list with each power supply graphic element in the power supply graphic element list as a parent node, and the tree structure stores the position relationship of the topological graphic graphic elements and the graphic element attributes;

S4. Traverse the tree structure storage list, and calculate the telemetry value of the equipment on the line.

It should be noted that the present invention obtains the attributes and positional relationship of each graphic element on the topological diagram by drawing the device line topology diagram and configuring the attributes of each device graphic element on the topological diagram, and stores the positional relationship and the diagram of the topological graphic elements in a tree structure. Meta attributes, by traversing the tree structure storage list, calculating the total load of each branch, and then calculating the load current and load voltage of each device through the Ohm's law formula. The invention can solve the problem of long test time of the distributed FA system and damage to the hardware equipment due to overload output. It can also predict the test result of the distributed FA system test under the current configuration, and adjust the test plan according to the predicted result, for example, calculate according to the current configuration The load value of each point on the output line. When the load current is too large, the current can be limited by reducing the voltage input or increasing the load value on the line. When the current reaches the fault threshold, it is judged whether the device will act immediately to isolate the fault point and protect it The function of the circuit improves the efficiency and safety and stability of the system test.

Configure the input voltage attribute of the power source graphic element, and the input voltage value is U=220V;

Configure the load value attributes of the various types of graphic elements according to the actual device resistance value;

The state attribute of the switch graphic element is configured, and the state attribute includes the open state of the contact switch and the closed state of the breaking switch. When the switch is in the closed state, it can supply power to the lower-level line, and when the switch is in the open state, the subsequent line is isolated for power supply.

Further, the above-mentioned step S2: traverse each graphic element on the topology diagram used for load forecasting, filter out all the power graphic elements, and obtain a power graphic element list, including the following subdivision steps S21 to S22:

S21. Obtain each graphic element information on the topology map through the QGraphicsScene::items() standard interface to obtain a graphic element information list;

S22. Traverse the graphic element information list, filter out power graphic elements according to attributes corresponding to the graphic element type, and obtain the power graphic element list.

Further, the above step S3: According to the list of power source primitives, a tree-like storage list is generated with each power source primitive in the list of power source primitives as the parent node. The tree-like structure stores the positional relationship of the topological map primitives and the attributes of the primitives, including The steps are as follows:

a) Traverse the power source primitives in the list of power source primitives as the starting point of the main circuit and save them as the parent node of the tree structure;

b), judge whether the ID of the next graphic element is stored in the current graphic element attribute, if yes, perform step c), if otherwise, perform step d);

c). Add the next graphic element as a child node of the tree structure, and execute the step b);

d), end the search, and execute the step a);

e) After the power source graphic element list is empty, the query is ended, and the tree structure storage list is generated.

It should be noted that in this embodiment, the attributes and position relationships of each graphic element on the topological graph are acquired, and the position relationships and graphic element attributes of the topological graph graphic elements are stored in a tree structure to generate a tree structure storage list.

Further, the above step S4: traversing the tree structure storage list, calculating the telemetry value of the device on the line, including the following subdivision steps:

b2) Indicates that the line with the power source graphic element as the parent node only contains one power source graphic element, no load equipment, and the line load does not need to be calculated;

h2) The node is a load graphic element, the total load value of the branch line increases the load value of the load graphic element, and then the next level node ID attribute list stored in the load graphic element attribute is used to obtain the child nodes contained in the next level of the child node Number, and then repeat step a2) with the load graphic element as the parent node;

It should be noted that when the number of child nodes is one, it indicates that the level is the main line level, and the node load value Rj1 belongs to the main line. If the node graphic element is a switch and the switch state is time-sharing, the node is the last node of the main line. Main line load Rz=Rj1, main line load current Iz=U/Rz, node load current Ij1=Iz, node load voltage Uj1=Ij1*Rj1; when the switch state is closed, the main line load Rz=Rj1, according to this graphic element The ID attribute list of the next level node stored in the attribute can get the number of nodes contained in the next level of the node, and then repeat step a2) with this node as the parent node;

When the number of child nodes exceeds one, it indicates that the level is a branch level, and each node represents a branch. All nodes on this level are branch line parent nodes, and the node load belongs to the corresponding branch line. The equivalent load of each branch is recorded as Rn1f1～Rn1fn, The voltage of each branch is marked as Un1f1～Un1fn, and the current of each branch is marked as In1f1～In1fn. According to the formula 1/Rf1=1/Rn1f1+1/Rn1f2+...+1/Rn1fn, the branch equivalent load Rf1 and the main line load Rz are calculated =Rf1, the main circuit load current Iz=U/Rf1, because the branch circuit is connected in parallel to the main circuit, it can be seen that Un1f1=Un1f2=...=Un1fn=U, the load current of the branch circuit is In1f1=Un1f1/Rn1f1; if the branch node graph element It is a switch, the switch state is time-sharing, the node is the last node of the branch line, and the branch load Rn1f1 is the primitive load Rt1 (known); when the switch state is on, the next level node ID stored in the primitive attribute The attribute list can get the number of nodes contained in the next level of the node, and then repeat step a2) with this node as the parent node;

As shown in FIG. 4, this embodiment also discloses a distributed FA simulation system load forecasting system, including: a topology drawing module 10, a power source primitive list building module 20, a tree structure storage list building module 30, and load forecasting Module 40, where:

The topology drawing module 10 is used to draw a corresponding line topology diagram according to the actual line relationship of the circuit to be simulated, and configure relevant attributes for each graphic element on the line topology diagram to obtain a topology diagram for load forecasting;

The power supply graphic element list construction module 20 is used for traversing each graphic element on the topology diagram used for load forecasting, filtering out all the power supply graphic elements, and obtaining a power supply graphic element list;

The tree structure storage list building module 30 is used for generating a tree storage list with each power supply graphic element in the power supply graphic element list as the parent node according to the power supply graphic element list, and the tree structure stores the positional relationship and topological graphic element. Primitive attributes;

The load forecasting module 40 is used to traverse the tree structure storage list and calculate the telemetry value of the equipment on the line.

The tree structure storage list construction module 30 includes a traversal unit, a judgment unit, an execution unit, and a storage list construction unit, wherein:

Further, the power source graphic element list construction module 20 includes an interface unit and a power source graphic element list construction unit, wherein:

The invention enables the distributed FA simulation system to know the theoretical load of each device on the line under the current configuration before it is put into output, avoiding the problems of long actual test time, no reference to test results, and equipment damage caused by overload output, thereby improving The safety and stability of power system operation.

The foregoing descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range.

Claims

A load forecasting method for a distributed FA simulation system, which is characterized in that it includes:

According to the line relationship of the actual circuit to be simulated, draw the corresponding line topology diagram, and configure relevant attributes for each graphic element on the line topology diagram to obtain the topology diagram used for load forecasting;

Traverse each graphic element on the topology diagram used for load forecasting, filter out all power graphic elements, and obtain a list of power graphic elements;

According to the list of power source primitives, a tree-like storage list is generated with each power source primitive in the list of power source primitives as the parent node, and the tree structure stores the positional relationship of the topological map primitives and the attributes of the primitives;

Traverse the tree structure storage list, and calculate the telemetry value of the equipment on the line.
The distributed FA simulation system load forecasting method according to claim 1, wherein each graphic element type on the line topology diagram includes at least a power supply graphic element, a load graphic element, and a switch graphic element, and the line topology diagram Configure related attributes of each graphic element to obtain a topology diagram for load forecasting, including:

Configure the input voltage attributes of the power supply primitives;

Configure the load value attributes of various types of primitives according to the actual equipment resistance value;

Configure the state attribute of the switch graphic element, and the state attribute includes the open state of the contact switch and the closed state of the break switch.
The distributed FA simulation system load forecasting method according to claim 1, wherein the traversing each graphic element on the topology diagram used for load forecasting, filtering out all the power supply graphic elements, and obtaining the power supply diagram Meta list, including:

Obtain each graphic element information on the topological graph through the QGraphicsScene::items() standard interface to obtain a graphic element information list;

Traverse the graphic element information list, filter out power graphic elements according to the attributes corresponding to the graphic element type, and obtain the power graphic element list.
The distributed FA simulation system load forecasting method according to claim 1, characterized in that, according to the list of power source primitives, a tree-like storage list is generated with each power source primitive in the list of power source primitives as a parent node, and the tree-like The structure stores the positional relationship and attributes of topological graph elements, including:

a1) Traverse the power source primitives in the list of power source primitives as the starting point of the main circuit and save them as the parent node of the tree structure;

b1) Determine whether the ID of the next graphic element is stored in the current graphic element attribute, if yes, perform step c1), if otherwise, perform step d1);

c1) Add the next graphic element as a child node of the tree structure, and execute the step b1);

d1) End the search, and execute the step a1);

e1) After the power source graphic element list is empty, the query is ended, and the tree structure storage list is generated.
The load forecasting method of a distributed FA simulation system according to claim 1, wherein the traversing the storage list of the tree structure and calculating the telemetry value of the equipment on the line comprises:

a2) In the tree structure storage list, take the power supply primitive as the parent node as the first level, and obtain the next level of the parent node according to the next-level node ID attribute list stored in the power supply primitive attribute If the number of child nodes is zero, execute step b2), if the number of child nodes is one, execute step c2), if the number of child nodes is greater than one, execute step f2);

b2) There is no need to calculate the line load for the line unloaded equipment with the power source graphic element as the parent node;

c2) The line with the power source graphic element as the parent node is the main line level, then the load value of the child node belongs to the main line, judge whether the child node is a switch graphic element, if yes, proceed to step d2), if otherwise, proceed to step e2) ；

d2) When the switch graphic element state is time-sharing, the switch graphic element is used as the last node of the main line, and the telemetry value of the equipment on the line is calculated. When the switch graphic element state is closed, the next level node stored in the switch graphic element attribute The ID attribute list obtains the number of child nodes contained in the next level of the child node, and then repeats step a2) with the switch graphic element as the parent node;

e2) The node is a load graphic element, and the load value belongs to the main line. The total load of the main line increases the load value of the graphic element configuration. According to the next level node ID attribute list stored in the graphic element attribute, the next level of the child node is obtained The number of child nodes included, and then repeat step a2) with the graphic element as the parent node;

f2) The line with the power source element as the parent node is the branch line level, each child node represents a branch line, and the load of the child node belongs to the corresponding branch line. The telemetry value of the equipment on the line is calculated according to the load of each branch line, and then the branch line is judged Whether the branch node of is a switch graphic element, if yes, go to step g2), if not, go to step h2);

g2) When the switch graphic element state is time-sharing, the branch node is the last node of the branch line, and the branch load is the switch graphic element load; when the switch graphic element state is on, the next level stored in the switch graphic element attribute The node ID attribute list can get the number of child nodes contained in the next level of the branch node, and then repeat step a2) with the branch node as the parent node;

h2) The node is a load graphic element, the load value belongs to the branch line, the total load of the branch line increases the load value of the graphic element configuration, and the next level of the child node is obtained according to the next level node ID attribute list stored in the graphic element attribute The number of child nodes included, and then repeat step a2) with the graphic element as the parent node;

i2) Take another power supply graphic element in the tree structure storage list as the parent node and repeat step a2) until all power supply graphic elements are traversed.
The distributed FA simulation system load forecasting method according to claim 5, characterized in that, in the step d2), when the state of the switch graphic element is time-sharing, the switch graphic element is used as the last node of the main line, and the line is calculated Equipment telemetry values, including:

Calculate the main line load Rz=Rj1, main line load current Iz=U/Rz, node load current Ij1=Iz, node load voltage Uj1=Ij1×Rj1; where Rj1 is the node load value and U is the input voltage of the configuration .
The distributed FA simulation system load forecasting method according to claim 5, wherein, in said step f2), the line with the power source primitive as the parent node is the branch line level, and each child node represents a branch line , The load of the child node belongs to the corresponding branch line, and calculate the telemetry value of the equipment on the line according to the load of each branch line, including:

According to the formula 1/Rf1=1/Rn1f1+1/Rn1f2+...+1/Rn1fn, the equivalent load Rf1 of the branch line is calculated, then the main line load Rz=Rf1, and the main line load current Iz=U/Rf1; where , Rn1f1~Rn1fn represent the equivalent load of each branch, and U is the input voltage of the configuration;

Since the branch lines are connected in parallel to the main line, the voltage of each branch line is Un1f1=Un1f2=...=Un1fn=U, the load current of the branch line is In1f1=Un1f1/Rn1f1, and the current of each branch line is In1f1～In1fn.
A distributed FA simulation system load forecasting system, which is characterized by comprising: a topology drawing module, a power source primitive list building module, a tree structure storage list building module, and a load forecasting module, wherein:

The topology drawing module is used to draw the corresponding line topology diagram according to the line relationship of the actual circuit to be simulated, and configure relevant attributes for each graphic element on the line topology diagram to obtain a topology diagram for load forecasting;

The power supply graphic element list construction module is used for traversing each graphic element on the topology diagram used for load forecasting, filtering out all the power supply graphic elements, and obtaining a power supply graphic element list;

The tree structure storage list building module is used to generate a tree storage list with each power supply primitive in the power supply primitive list as the parent node according to the power supply primitive list, and the tree structure stores the position relationship of the topological map primitives and the primitive attributes ；

The load forecasting module is used to traverse the tree structure storage list and calculate the telemetry value of the equipment on the line.
The distributed FA simulation system load forecasting system according to claim 8, wherein each graphic element type on the line topology diagram includes at least a power graphic element, a load graphic element, and a switch graphic element. The attributes are input voltage attributes and load value attributes, the attributes of the load graphic element are load value attributes, and the attributes of the switch graphic element are state attributes and load value attributes;

The tree structure storage list construction module includes a traversal unit, a judgment unit, an execution unit, and a storage list construction unit, wherein:

The traversal unit is used to traverse the power supply primitives in the list of power supply primitives as the starting point of the main circuit and store them as the parent node of the tree structure;

The judging unit is used to determine whether the ID of the next graphic element is stored in the attribute of the current graphic element;

The execution unit is used to add the next graphic element as a child node of the tree structure when the output result of the judgment unit is yes, and control the judgment unit to restart;

The execution unit is used to end the search when the output result of the judgment unit is no, and control the traversal unit to restart;

The storage list construction unit is used for ending the query after the power source graphic element list is empty, and generating the tree structure storage list.
The distributed FA simulation system load forecasting system according to claim 8, wherein the power source graphic element list construction module comprises an interface unit and a power source graphic element list construction unit, wherein:

The interface unit is used to obtain the graphic element information on the topological graph through the QGraphicsScene::items() standard interface to obtain the graphic element information list;

The power source graphic element list construction unit is used to traverse the graphic element information list, filter out power source graphic elements according to the attributes corresponding to the graphic element type, and obtain the power source graphic element list.