Principle teaching device and logic control method of multi-source multi-loop complex distribution network

Abstract

The present invention discloses a principle teaching device of a multi-source multi-loop complex distribution network and a logic control method thereof, the device comprises a three-dimensional sand table of a multi-source multi-loop complex distribution network and a computer for controlling the three-dimensional sand table of the multi-source multi-loop complex distribution network, as well as a configuration touch screen and a voice broadcast module connected to the computer; the method comprises the following steps: 1. Setting of fault types in different regions; 2. Logic control of fault types in different regions. The present invention is reasonably designed and low in cost, and intuitively and vividly displays the network topology, operation mode and principle teaching of fault power supply and transfer of a multi-source multi-loop complex distribution network, laying a theoretical foundation for operation and maintenance management of system maintenance personnel.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical engineering and automation teaching and training, and specifically relates to a principle teaching device of a multi-source and multi-loop complex distribution network and a logic control method thereof. Background Art

[0002] The power system is an important material basis for the development of the national economy and the survival of human society. It is usually composed of power generation, transmission, substation, distribution and other links. In the power system, the distribution network is the basis for the distribution of electric energy and its use by users, and its power supply reliability is particularly critical. In order to achieve the power supply reliability index of important places, "multi-source" and "multi-loop" methods are usually adopted at present. The so-called "multi-source" means that the distribution network is powered by multiple city power from different upper-level substations, and a diesel power station is set up in a certain level of substation or switch station, that is, the city power is used when the city power is normal or non-important, and the diesel power station is used when the city power is interrupted or at important times; the so-called "multi-loop" means that the user side adopts a multi-loop mesh power supply form, that is, each power-consuming equipment can obtain power from two directions of the loop, and the fault in any direction will not affect the power supply of the power-consuming equipment. In addition, there are inter-loop contact switches between the loops, thus forming a "multi-loop" to further improve the power supply reliability of the distribution network.

[0003] However, the above-mentioned multi-source and multi-loop complex distribution network system has a complex network topology, a large number of switches, and widely distributed equipment. For distribution network operation and maintenance managers, it is usually impossible to understand its network topology structure from an overall macroscopic perspective, nor is it possible to grasp its operating mode and its fault conversion process from an overall and intuitive perspective. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a principle teaching device for a multi-source multi-loop complex distribution network in view of the deficiencies in the above-mentioned prior art. The device has a reasonable design and can intuitively and vividly display the network topology, operation mode and principle teaching of fault power supply and transfer of the multi-source multi-loop complex distribution network, thereby laying a theoretical foundation for operation and maintenance management of system maintenance personnel.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a principle teaching device of a multi-source multi-loop complex distribution network, characterized in that it includes a three-dimensional sand table of a multi-source multi-loop complex distribution network and a computer for controlling the three-dimensional sand table of the multi-source multi-loop complex distribution network, and a configuration touch screen and a voice broadcast module connected to the computer;

[0006] The multi-source multi-loop complex distribution network three-dimensional sand table includes a first power supply branch, a second power supply branch and a user group. The first power supply branch includes a 35kV substation I three-dimensional sand table model, a 10kV switch station I three-dimensional sand table model, a 10kV switch station I three-dimensional sand table model, and a diesel power station I three-dimensional sand table model; the second power supply branch includes a 35kV substation II three-dimensional sand table model, a 10kV switch station II three-dimensional sand table model, a diesel power station II three-dimensional sand table model, and a 10kV switch station II three-dimensional sand table model;

[0007] The user group includes a user group loop 1 and a user group loop 2, wherein the user group loop 1 includes a 1# user model, a 2# user model, a 3# user model and a 4# user model, and the user group loop 2 includes a 5# user model, a 6# user model, a 7# user model and an 8# user model, and an inter-ring contact switch is provided between the user group loop 1 and the user group loop 2.

[0008] The above-mentioned principle teaching device of a multi-source multi-loop complex distribution network is characterized in that: the 35kV substation I three-dimensional sandbox model is provided with 35kV busbar I-1, 35kV busbar II-1, 10kV busbar I-11, and 10kV busbar II-11, a transformer 1-BY1 is provided between the 35kV busbar I-1 and the 10kV busbar I-11, an analog switch 1-AH3 is provided between the 35kV busbar I-1 and the transformer 1-BY1, an analog switch 1-BAH1 is provided between the transformer 1-BY1 and the 10kV busbar I-11, and an analog switch 1-BAH3 and an analog switch 1-BAH4 are provided on the 10kV busbar I-11;

[0009] An analog switch 1-AH1 is provided between the 35kV busbar I-1 and the upper 110kV substation I, an analog switch 1-AH5 is provided between the 35kV busbar II-1 and the 35kV busbar I-1, a transformer 1-BY2 is provided between the 35kV busbar II-1 and the 10kV busbar II-11, an analog switch 1-AH6 is provided between the 35kV busbar II-1 and the transformer 1-BY2, an analog switch 1-BAH2 is provided between the transformer 1-BY2 and the 10kV busbar II-11, and an analog switch 1-BAH5, an analog switch 1-BAH7 and an analog switch 1-BAH8 are provided on the 10kV busbar II-11; the 10kV busbar II-11 is connected to the 10kV busbar I-11 through the analog switch 1-BAH5;

[0010] The 10kV switch station I three-dimensional sandbox model is provided with 10kV busbar I-21 and 10kV busbar II-21. The 10kV busbar I-21 is connected to the analog switch 1-BAH4 through the analog switch 1-GAH1; the 10kV busbar I-21 is connected to the analog switch 1-GAH3, the analog switch 1-GAH4 and the analog switch 1-GAH5; the 10kV busbar II-21 is connected to the analog switch 1-BAH7 through the analog switch 1-GAH2 in one way and to the analog switch 1-GAH13 and the analog switch 1-GAH5 in the other way. FAH3 is connected to the 10kV bus in the three-dimensional sand table model of the diesel power station I. A simulation switch 1-FAH1 is connected between the 10kV bus in the three-dimensional sand table model of the diesel power station I and the three-dimensional sand table model of the diesel power station I. The 10kV bus II-21 is also provided with simulation switches 1-GAH7, 1-GAH8, 1-GAH9, 1-GAH10 and 1-GAH11; the 10kV bus II-21 is connected to the 10kV bus I-21 through the simulation switch 1-GAH7;

[0011] The 10kV switchgear I three-dimensional sandbox model is provided with 10kV busbar I-31 and 10kV busbar II-31. The 10kV busbar I-31 is connected with analog switch 1-GAH5 through analog switch 1-KAH1; the 10kV busbar I-31 is provided with analog switch 1-KAH3 and analog switch 1-KAH4; the 10kV busbar II-31 is connected with analog switch 1-GAH8 through analog switch 1-KAH2; the 10kV busbar II-31 is provided with analog switch 1-KAH6, analog switch 1-KAH7, analog switch 1-KAH8, analog switch 1-KAH9 and analog switch 1-KAH10.

[0012] The above-mentioned principle teaching device of a multi-source multi-loop complex distribution network is characterized in that: the 35kV substation II three-dimensional sandbox model is provided with 35kV busbar I-2, 35kV busbar II-2, 10kV busbar I-12, and 10kV busbar II-12, a transformer 2-BY1 is provided between the 35kV busbar I-2 and the 10kV busbar I-12, an analog switch 2-AH3 is provided between the 35kV busbar I-2 and the transformer 2-BY1, an analog switch 2-BAH1 is provided between the transformer 2-BY1 and the 10kV busbar I-12, and an analog switch 2-BAH3 and an analog switch 2-BAH4 are provided on the 10kV busbar I-12;

[0013] An analog switch 2-AH1 is provided between the 35kV busbar I-2 and the upper 110kV substation II, an analog switch 2-AH5 is provided between the 35kV busbar II-2 and the 35kV busbar I-2, a transformer 2-BY2 ​​is provided between the 35kV busbar II-2 and the 10kV busbar II-12, an analog switch 2-AH6 is provided between the 35kV busbar II-2 and the transformer 2-BY2, an analog switch 2-BAH2 is provided between the transformer 2-BY2 ​​and the 10kV busbar II-12, and an analog switch 2-BAH5, an analog switch 2-BAH7 and an analog switch 2-BAH8 are provided on the 10kV busbar II-12; the 10kV busbar II-12 is connected to the 10kV busbar I-12 through the analog switch 2-BAH5;

[0014] The 10kV switch station II three-dimensional sandbox model is provided with 10kV busbar I-22 and 10kV busbar II-22. The 10kV busbar I-22 is connected to the analog switch 2-BAH4 through the analog switch 2-GAH1; the 10kV busbar I-22 is connected to the analog switch 2-GAH3, the analog switch 2-GAH4 and the analog switch 2-GAH5; the 10kV busbar II-22 is connected to the analog switch 2-BAH7 through the analog switch 2-GAH2 in one way and to the analog switch 2-GAH13 and the analog switch 2-GAH5 in the other way. FAH3 is connected to the 10kV bus in the three-dimensional sand table model of the diesel power station II; a simulation switch 2-FAH1 is connected between the 10kV bus in the three-dimensional sand table model of the diesel power station II and the three-dimensional sand table model of the diesel power station II, and the 10kV bus II-22 is also provided with simulation switches 2-GAH7, 2-GAH8, 2-GAH9, 2-GAH10 and 2-GAH11; the 10kV bus II-22 is connected to the 10kV bus I-22 through the simulation switch 2-GAH7;

[0015] The 10kV switchgear II three-dimensional sandbox model is provided with 10kV busbar I-32 and 10kV busbar II-32. The 10kV busbar I-32 is connected to the analog switch 2-GAH5 through the analog switch 2-KAH1; the 10kV busbar I-32 is provided with analog switch 2-KAH3 and analog switch 2-KAH4; the 10kV busbar II-32 is connected to the analog switch 2-GAH8 through the analog switch 2-KAH2; the 10kV busbar II-32 is provided with analog switch 2-KAH6, analog switch 2-KAH7, analog switch 2-KAH8, analog switch 2-KAH9 and analog switch 2-KAH10.

[0016] The above-mentioned principle teaching device of a multi-source multi-loop complex distribution network is characterized in that: the 1# user model is provided with a 10kV bus 1, a transformer BYQ1 and a 1# load, the 2# user model is provided with a 10kV bus 2, a transformer BYQ2 and a 2# load, the 3# user model is provided with a 10kV bus 3, a transformer BYQ3 and a 3# load, and the 4# user model is provided with a 10kV bus 4, a transformer BYQ4 and a 4# load;

[0017] The 10kV bus 1 is provided with an analog switch 1-YAH1 and an analog switch 1-YAH4, an analog switch YAH11 is connected between the 10kV bus 1 and the transformer BYQ1, and the output of the transformer BYQ1 is connected to the 1# load; the 10kV bus 2 is provided with an analog switch 2-YAH1 and an analog switch 2-YAH5, an analog switch YAH12 is connected between the 10kV bus 2 and the transformer BYQ2, and the output of the transformer BYQ2 is connected to the 2# load; the 10kV bus 3 is provided with an analog switch 3-YAH1 and an analog switch 3-YAH4, and an analog switch YAH1 is connected between the 10kV bus 3 and the transformer BYQ3 3. The output of the transformer BYQ3 is connected to the 3# load; the 10kV bus 4 is provided with an analog switch 4-YAH1 and an analog switch 4-YAH4, an analog switch YAH14 is connected between the 10kV bus 4 and the transformer BYQ4, and the output of the transformer BYQ4 is connected to the 4# load; the analog switch 1-YAH1 is connected to the analog switch 1-KAH9, the analog switch 1-YAH4 is connected to the analog switch 2-YAH1, the analog switch 2-YAH5 is connected to the analog switch 3-YAH1, the analog switch 3-YAH4 is connected to the analog switch 4-YAH1, and the analog switch 4-YAH4 is connected to the analog switch 2-KAH3.

[0018] The above-mentioned principle teaching device of a multi-source multi-loop complex distribution network is characterized in that: the 5# user model is provided with a 10kV bus 5, a transformer BYQ5 and a 5# load, the 6# user model is provided with a 10kV bus 6, a transformer BYQ6 and a 6# load, the 7# user model is provided with a 10kV bus 7, a transformer BYQ7 and a 7# load, and the 8# user model is provided with a 10kV bus 8, a transformer BYQ8 and an 8# load;

[0019] The 10kV bus 5 is provided with an analog switch 5-YAH1 and an analog switch 5-YAH4, an analog switch YAH15 is connected between the 10kV bus 5 and the transformer BYQ5, and the output of the transformer BYQ5 is connected to the 5# load; the 10kV bus 6 is provided with an analog switch 6-YAH1 and an analog switch 6-YAH4, an analog switch YAH16 is connected between the 10kV bus 6 and the transformer BYQ6, and the output of the transformer BYQ6 is connected to the 6# load; the 10kV bus 7 is provided with an analog switch 7-YAH1 and an analog switch 7-YAH5, and an analog switch YAH1 is connected between the 10kV bus 7 and the transformer BYQ7 7, the output of the transformer BYQ7 is connected to the 7# load; the 10kV bus 8 is provided with an analog switch 8-YAH1 and an analog switch 8-YAH4, an analog switch YAH18 is connected between the 10kV bus 8 and the transformer BYQ8, and the output of the transformer BYQ8 is connected to the 8# load; the analog switch 5-YAH1 is connected to the analog switch 1-KAH3, the analog switch 5-YAH4 is connected to the analog switch 6-YAH1, the analog switch 6-YAH4 is connected to the analog switch 7-YAH1, the analog switch 7-YAH5 is connected to the analog switch 8-YAH1, and the analog switch 8-YAH4 is connected to the analog switch 2-KAH9.

[0020] The inter-ring contact switch includes an analog switch 2-YAH4 arranged on the 10kV bus 2 and an analog switch 7-YAH4 arranged on the 10kV bus 7, and the analog switch 2-YAH4 is connected to the analog switch 7-YAH4.

[0021] The above-mentioned principle teaching device of a multi-source multi-loop complex distribution network is characterized in that: the analog switch adopts a square red indicator light, when the analog switch is closed, the computer controls the square red indicator light to light up; when the analog switch is opened, the computer controls the square red indicator light to turn off;

[0022] The 35kV busbar is simulated by a green luminous line with a diameter of 2.3mm. When the 35kV busbar is powered on, the computer controls the green luminous line to light up; when the 35kV busbar is powered off, the computer controls the green luminous line to turn off.

[0023] The 10kV busbar is simulated by a yellow luminous line with a diameter of 2.0mm. When the 10kV busbar is energized, the computer controls the yellow luminous line to light up; when the 10kV busbar is de-energized, the computer controls the yellow luminous line to turn off.

[0024] The simulated switches are connected through a 35kV power supply line or a 10kV power supply line. The 35kV power supply line is simulated by a blue luminous line with a diameter of 2.0mm, and the 10kV power supply line is simulated by a blue luminous line with a diameter of 1.3mm. The computer controls the lighting and extinguishing of the blue luminous line with a diameter of 2.0mm and the blue luminous line with a diameter of 1.3mm to correspond to the conduction and cutoff of the 35kV power supply line and the 10kV power supply line respectively.

[0025] The 1# to 8# loads are simulated by square white indicator lights, and the computer controls the lighting and extinguishing of the square white indicator lights to correspond to the power on and power off of the simulated user loads.

[0026] At the same time, the present invention also discloses a logic control method of a principle teaching device for a multi-source multi-loop complex distribution network, which has simple steps, reasonable design and convenient implementation, and is characterized in that the method comprises the following steps:

[0027] Step 1: Setting of fault types in different areas:

[0028] Step 101, setting the lines of the 35kV substation I three-dimensional sand table model and the 35kV substation II three-dimensional sand table model to be normal, and then there are user group faults, switch station faults, and switch station faults;

[0029] Step 102, setting the user group fault type to include: user group loop 1 left incoming line power failure, user group loop 2 left incoming line power failure, user group loop 1 right incoming line power failure, user group loop 2 right incoming line power failure, user group loop 1 double-end incoming line power failure and user group loop 2 double-end incoming line power failure;

[0030] The types of switchgear faults include: 10kV switchgear I left incoming line power failure, 10kV switchgear I right incoming line power failure, 10kV switchgear II left incoming line power failure and 10kV switchgear II right incoming line power failure;

[0031] The types of switch station faults include: 10kV switch station I left incoming line power failure, 10kV switch station I right incoming line power failure, 10kV switch station II left incoming line power failure, 10kV switch station II right incoming line power failure, 10kV switch station I double-end incoming line power failure and 10kV switch station II double-end incoming line power failure;

[0032] Step 2: Logical control of fault types in different areas:

[0033] Step 201, when the left side incoming line power failure type of user group loop 1 is selected: 1# user model and 2# user model will be powered off, and the computer will be controlled according to the following logic:

[0034]

[0035] The power is transferred from 10kV bus I-32 in 10kV switch station II to make A 1# and A 2# is 1, then the 1# user model and the 2# user model are powered; where, Indicates logical negation, · Indicates logical AND; B II-31 Indicates the power-off status of 10kV busbar II-31 in 10kV switchgear I, B I-32 Indicates the power-off and power-on status of the 10kV busbar I-32 in the 10kV switch station II, and the power-off and power-on status are all 0 or 1; 4YAH4 indicates the opening and closing status of the analog switch 4-YAH4, 4YAH1 indicates the opening and closing status of the analog switch 4-YAH1, 3YAH4 indicates the opening and closing status of the analog switch 3-YAH4, 3YAH1 indicates the opening and closing status of the analog switch 3-YAH1, 2YAH5 indicates the opening and closing status of the analog switch 2-YAH5, 2YAH1 indicates the opening and closing status of the analog switch 2-YAH1, 1YAH4 indicates the opening and closing status of the analog switch 1-YAH4, and the opening and closing status are all 0 or 1; A 1#用户 Indicates the power-off and power-on status of the 1# user model; A 2#用户 Indicates the power-off and power-on status of the 2# user model;

[0036] When the left side incoming line power failure type of user group loop 2 is selected: 5# user model, 6# user model and 7# user model will be powered off, and the computer will follow the logical control formula as follows:

[0037]

[0038]

[0039] The power is transferred from 10kV bus II-32 in 10kV switch station II to make A 7# , A 6# and A 5# is 1, then the 5# user model, 6# user model and 7# user model are powered; among them, B I-31 Indicates the power-off status of 10kV busbar I-31 in 10kV switch station I, B II-32Indicates the power-off and power-on status of 10kV bus II-32 in 10kV switch station II, 8YAH4 indicates the opening and closing status of analog switch 8-YAH4, 8YAH1 indicates the opening and closing status of analog switch 8-YAH1, 7YAH5 indicates the opening and closing status of analog switch 7-YAH5, 7YAH1 indicates the opening and closing status of analog switch 7-YAH1, 6YAH4 indicates the opening and closing status of analog switch 6-YAH4, 6YAH1 indicates the opening and closing status of analog switch 6-YAH1, 5YAH4 indicates the opening and closing status of analog switch 5-YAH4; A 7# Indicates the power-off and power-on status of the 7# user model, A 6# Indicates the power-off and power-on status of the 6# user model, A 5# Indicates the power-off and power-on status of the 5# user model;

[0040] When the fault type of power failure of the right incoming line of user group loop 1 is selected: the 3# user model and the 4# user model will be powered off, and the computer will follow the logical control formula as follows:

[0041]

[0042] The power is transferred from 10kV bus II-31 in 10kV switch station I to make A 3# and A 4# is 1, then the 3# user model and the 4# user model are powered; among them, B I-32 Indicates the power-off status of 10kV busbar I-32 in 10kV switch station II, B II-31 Indicates the power-off and power-on status of 10kV bus II-31 in 10kV switchgear I, 1YAH1 indicates the opening and closing status of analog switch 1-YAH1, 3YAH1 indicates the opening and closing status of analog switch 3-YAH1, A 3# Indicates the power-off and power-on status of the 3# user model; A 4# Indicates the power-off and power-on status of the 4# user model;

[0043] When the fault type of power failure of the right incoming line of user group loop 2 is selected: the 8# user model will be powered off, and the computer will follow the logical control formula as follows:

[0044] The power is transferred from the 10kV busbar I-31 in the 10kV switch station I to enable A 8# is 1, then the 8# user model is powered; among them, B II-32 Indicates the power-off status of 10kV busbar II-32 in 10kV switch station II, B I-31Indicates the power-off and power-on status of the 10kV busbar I-31 in the 10kV switch station I; 5YAH1 indicates the opening and closing status of the analog switch 5-YAH1, 7YAH5 indicates the opening and closing status of the analog switch 7-YAH5, 8YAH1 indicates the opening and closing status of the analog switch 8-YAH1, A 8# Indicates the power-off and power-on status of the 8# user model;

[0045] When the double-end incoming line power failure type of user group loop 1 is selected: 1# user model, 2# user model, 3# user model and 4# user model will be powered off, and the computer will follow the logical control formula as follows:

[0046]

[0047]

[0048]

[0049] The power transfer is obtained from the user group loop 2 so that A 1# , A 2# , A 3# and A 4# If it is 1, then the 1# user model, 2# user model, 3# user model and 4# user model are powered; among them, 2YAH4 represents the opening and closing state of the analog switch 2-YAH4, and 7YAH4 represents the opening and closing state of the analog switch 7-YAH4;

[0050] When the double-end incoming line power failure type of user group loop 2 is selected: 5# user model, 6# user model, 7# user model and 8# user model will be powered off, and the computer will follow the logical control formula as follows:

[0051]

[0052]

[0053]

[0054] The power supply is obtained from the user group loop 1 so that A 5# , A 6# , A 7# and A 8# If it is 1, then the 5# user model, 6# user model, 7# user model and 8# user model are powered;

[0055] Step 202, when the left side incoming line power failure type of 10kV switchgear I is selected: the analog switch 1-KAH1 of 10kV switchgear I is opened, and the 10kV bus I-31 of 10kV switchgear I will lose power, and the computer will control according to the following logic formula:

[0056] The power is transferred from the 10kV bus II-31 of the 10kV switch station I to enable B I-31 is 1, then the 10kV bus I-31 of the 10kV switch station I is energized; where B II-31 Indicates the power-off and power-on status of 10kV bus II-31 in 10kV switchgear I; 1KAH1 indicates the opening and closing status of analog switch 1-KAH1, B I-31 Indicates the power-off and power-on status of the 10kV busbar I-31 in the 10kV switch station I; 1KAH2 indicates the opening and closing status of the analog switch 1-KAH2, and 1KAH6 indicates the opening and closing status of the analog switch 1-KAH6;

[0057] When the right side incoming line power failure type of 10kV switchgear I is selected: the analog switch 1-KAH2 of 10kV switchgear I is opened, and the 10kV bus II-31 of 10kV switchgear I will lose power. The computer will control according to the logic formula as follows: The power is transferred from the 10kV busbar I-31 of the 10kV switch station I to enable B II-31 If it is 1, the 10kV bus II-31 of 10kV switch station I is energized;

[0058] When the left side incoming line power failure type of 10kV switch station II is selected: the analog switch 2-KAH1 of 10kV switch station II is opened, and the 10kV bus I-32 of 10kV switch station II will lose power. The computer will control according to the logic formula as follows:

[0059] The power is transferred from the 10kV bus II-32 of the 10kV switch station II to enable B I-32 is 1, then the 10kV busbar I-32 of the 10kV switchgear II is energized; I-32 Indicates the power-off and power-on status of 10kV busbar I-32 in 10kV switch station II, 2KAH1 indicates the opening and closing status of analog switch 2-KAH1, 2KAH2 indicates the opening and closing status of analog switch 2-KAH2, and 2KAH6 indicates the opening and closing status of analog switch 1-KAH6; B II-32 Indicates the power-off and power-on status of 10kV bus II-32 in 10kV switch station II;

[0060] When the right side incoming line power failure type of 10kV switch station II is selected: the analog switch 2-KAH2 of 10kV switch station II is opened, and the 10kV bus II-32 of 10kV switch station II will lose power. The computer will control according to the logic formula as follows:

[0061] The power is transferred from the 10kV busbar I-32 of the 10kV switch station II to enable B II-32 If it is 1, the 10kV bus I-32 of 10kV switch station II is energized;

[0062] Step 203, when the left incoming line power failure type of 10kV switch station I is selected: the analog switch 1-GAH1 of the 10kV switch station I is opened, and the 10kV bus I-21 of the 10kV switch station I will lose power. The computer controls according to the following logic formula:

[0063] The 10kV bus II-21 of the 10kV switch station I is used to transfer power to B I-21 is equal to 1, then the 10kV bus I-21 of the 10kV switch station I remains energized; where B I-21 Indicates the power-off and power-on status of the 10kV busbar I-21 in the 10kV switch station I, 1GAH1 indicates the opening and closing status of the analog switch 1-GAH1, 1GAH7 indicates the opening and closing status of the analog switch 1-GAH7, B II-21 Indicates the power-off and power-on status of 10kV bus II-21 in 10kV switch station I, and 1GAH2 indicates the opening and closing status of analog switch 1-GAH2;

[0064] When the right incoming line power failure type of 10kV switch station I is selected: the analog switch 1-GAH2 of 10kV switch station I will be opened, and the 10kV bus II-21 of 10kV switch station I will lose power. The computer will control according to the logic formula as follows:

[0065] The 10kV busbar I-21 of the 10kV switch station I is used to transfer power to B II-21 If it is equal to 1, the 10kV bus II-21 of the 10kV switch station I remains energized;

[0066] When the left incoming line power failure type of 10kV switch station II is selected: the analog switch 2-GAH1 of 10kV switch station II is opened, and the 10kV bus I-22 of 10kV switch station II will lose power. The computer will control according to the logic formula as follows:

[0067] The 10kV busbar II-22 of the 10kV switch station II is used to transfer power to B I-22is equal to 1, then the 10kV bus I-22 of the 10kV switch station II remains energized; where B I-22 Indicates the power-off and power-on status of 10kV busbar I-22 in 10kV switch station II, 2GAH1 indicates the opening and closing status of analog switch 2-GAH1, 2GAH7 indicates the opening and closing status of analog switch 2-GAH7, B II-22 Indicates the power-off and power-on status of 10kV bus II-22 in 10kV switch station II. 2GAH2 indicates the opening and closing status of analog switch 2-GAH2.

[0068] When the right incoming line power failure type of 10kV switch station II is selected: the analog switch 2-GAH2 of 10kV switch station II will be opened, and the 10kV bus II-22 of 10kV switch station II will lose power. The computer will control the logic as follows:

[0069] The 10kV busbar I-22 of the 10kV switch station II is used to transfer power to B II-22 If it is 1, the 10kV bus II-22 of the 10kV switch station II remains energized;

[0070] When the 10kV switch station I double-end incoming line power failure type is selected: the analog switch 1-GAH1 and the analog switch 1-GAH2 of the 10kV switch station I are opened, the 10kV busbar I-21 and the 10kV busbar II-21 of the 10kV switch station I will lose power, and the computer will control according to the logic formula as follows:

[0071]

[0072] Obtain power from the diesel power station I to enable B II-21 and B I-21 If all are 1, the 10kV busbar I-21 and 10kV busbar II-21 of the 10kV switch station I remain energized; among them, 1FAH1 represents the opening and closing status of the analog switch 1-FAH1, 1FAH3 represents the opening and closing status of the analog switch 1-FAH3, 1GAH13 represents the opening and closing status of the analog switch 1-GAH13, 1GAH2 represents the opening and closing status of the analog switch 1-GAH2; 1GAH7 represents the opening and closing status of the analog switch 1-GAH7; 1GAH1 represents the opening and closing status of the analog switch 1-GAH1;

[0073] When the 10kV switch station II double-end incoming line power failure type is selected: the analog switch 2-GAH1 and the analog switch 2-GAH2 of the 10kV switch station II are opened, the 10kV busbar I-22 and the 10kV busbar II-22 of the 10kV switch station II will lose power, and the computer will control according to the logic formula as follows:

[0074]

[0075] Obtain power from the diesel power station II to enable B II-22 and B I-22 If both are 1, the 10kV busbar I-21 and 10kV busbar II-21 of the 10kV switch station II remain energized; II-22 Indicates the power-off and power-on status of 10kV busbar II-22 of 10kV switch station II; 2FAH1 indicates the opening and closing status of analog switch 2-FAH1, 2FAH3 indicates the opening and closing status of analog switch 2-FAH3, 2GAH13 indicates the opening and closing status of analog switch 2-GAH13, and 2GAH2 indicates the opening and closing status of analog switch 2-GAH2; B I-22 It indicates the power-off and power-on status of the 10kV busbar I-22 of the 10kV switch station II; 2GAH7 indicates the opening and closing status of the analog switch 2-GAH7; 2GAH1 indicates the opening and closing status of the analog switch 2-GAH1.

[0076] The above method is characterized in that it also includes the following steps:

[0077] Step A, using a computer to use KingView software to establish a multi-source multi-loop complex distribution network model that is the same as the multi-source multi-loop complex distribution network three-dimensional sandbox, and displaying the multi-source multi-loop complex distribution network model through a configuration touch screen;

[0078] Step B: The configuration touch screen is provided with a fault type selection button and a fault power supply transfer button;

[0079] Step C: The system maintenance personnel selects the corresponding fault type through the fault type selection button, and then operates the fault power supply transfer button;

[0080] Step D: The computer selects the corresponding logic control type from step 2 according to the fault type selected by the system maintenance personnel to realize the fault power supply transfer, and prompts the analog switch whose current opening and closing status is changing through the voice broadcast module, and the configuration touch screen displays it synchronously for intuitive viewing.

[0081] Compared with the prior art, the present invention has the following advantages:

[0082] 1. The present invention has a simple structure and reasonable design, and is convenient for intuitive teaching through a three-dimensional sandbox and a configuration touch screen for a multi-source and multi-loop complex distribution network, laying a theoretical foundation for operation and maintenance management of system maintenance personnel.

[0083] 2. The three-dimensional sandbox of the multi-source and multi-loop complex distribution network of the present invention includes a 35kV substation, a 10kV switch station, a 10kV switch station, a diesel power station and a user model, which is displayed intuitively and vividly, facilitating intuitive learning for system maintenance personnel.

[0084] 3. The logic control method of the principle teaching device of the multi-source multi-loop complex distribution network of the present invention has simple steps, convenient implementation and simple operation, and ensures power supply transfer in the event of a distribution network fault.

[0085] 4. For different fault types in different areas, the present invention determines the switch that needs to be changed from the open state to the closed state through different logical controls, and changes the corresponding simulated switch from the open state to the closed state on the three-dimensional electronic sand table and the configuration touch screen, and its corresponding upper and lower lines flash and then light up, thereby realizing the principle teaching of fault power supply transfer, which is convenient for system maintenance personnel to learn intuitively.

[0086] 5. The logic control method of the principle teaching device of the multi-source multi-loop complex distribution network of the present invention is easy to operate. First, the fault types of different areas are set, and then the logic control of the fault types of different areas is performed. The bus, finger load, and analog switch whose current fault types are changing are prompted through the voice broadcast module. At the same time, the configuration touch screen display is convenient for system maintenance personnel to watch.

[0087] To sum up, the present invention is reasonably designed, and intuitively and vividly demonstrates the network topology, operation mode and principle demonstration of fault power supply and transfer of multi-source and multi-loop complex distribution networks, laying a theoretical foundation for operation and maintenance management of system maintenance personnel.

[0088] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Figure 1 It is a schematic diagram of the principle teaching device of the multi-source multi-loop complex distribution network of the present invention.

[0090] Figure 2 It is a flowchart of the logic control method of the principle teaching device of the multi-source multi-loop complex distribution network of the present invention. DETAILED DESCRIPTION

[0091] like Figure 1 A principle teaching device of a multi-source multi-loop complex distribution network shown in the figure comprises a three-dimensional sand table of the multi-source multi-loop complex distribution network, a computer for controlling the three-dimensional sand table of the multi-source multi-loop complex distribution network, and a configuration touch screen and a voice broadcast module connected to the computer;

[0092] The multi-source multi-loop complex distribution network three-dimensional sand table includes a first power supply branch, a second power supply branch and a user group. The first power supply branch includes a 35kV substation I three-dimensional sand table model, a 10kV switch station I three-dimensional sand table model, a 10kV switch station I three-dimensional sand table model, and a diesel power station I three-dimensional sand table model; the second power supply branch includes a 35kV substation II three-dimensional sand table model, a 10kV switch station II three-dimensional sand table model, a diesel power station II three-dimensional sand table model, and a 10kV switch station II three-dimensional sand table model;

[0093] The user group includes a user group loop 1 and a user group loop 2, wherein the user group loop 1 includes a 1# user model, a 2# user model, a 3# user model and a 4# user model, and the user group loop 2 includes a 5# user model, a 6# user model, a 7# user model and an 8# user model, and an inter-ring contact switch is provided between the user group loop 1 and the user group loop 2.

[0094] In this embodiment, the 35kV substation I three-dimensional sandbox model is provided with 35kV busbar I-1, 35kV busbar II-1, 10kV busbar I-11, and 10kV busbar II-11. A transformer 1-BY1 is provided between the 35kV busbar I-1 and the 10kV busbar I-11, an analog switch 1-AH3 is provided between the 35kV busbar I-1 and the transformer 1-BY1, an analog switch 1-BAH1 is provided between the transformer 1-BY1 and the 10kV busbar I-11, and an analog switch 1-BAH3 and an analog switch 1-BAH4 are provided on the 10kV busbar I-11;

[0095] An analog switch 1-AH1 is provided between the 35kV busbar I-1 and the upper 110kV substation I, an analog switch 1-AH5 is provided between the 35kV busbar II-1 and the 35kV busbar I-1, a transformer 1-BY2 is provided between the 35kV busbar II-1 and the 10kV busbar II-11, an analog switch 1-AH6 is provided between the 35kV busbar II-1 and the transformer 1-BY2, an analog switch 1-BAH2 is provided between the transformer 1-BY2 and the 10kV busbar II-11, and an analog switch 1-BAH5, an analog switch 1-BAH7 and an analog switch 1-BAH8 are provided on the 10kV busbar II-11; the 10kV busbar II-11 is connected to the 10kV busbar I-11 through the analog switch 1-BAH5;

[0096] The 10kV switch station I three-dimensional sandbox model is provided with 10kV busbar I-21 and 10kV busbar II-21. The 10kV busbar I-21 is connected to the analog switch 1-BAH4 through the analog switch 1-GAH1; the 10kV busbar I-21 is connected to the analog switch 1-GAH3, the analog switch 1-GAH4 and the analog switch 1-GAH5; the 10kV busbar II-21 is connected to the analog switch 1-BAH7 through the analog switch 1-GAH2 in one way and to the analog switch 1-GAH13 and the analog switch 1-GAH5 in the other way. FAH3 is connected to the 10kV bus in the three-dimensional sand table model of the diesel power station I. A simulation switch 1-FAH1 is connected between the 10kV bus in the three-dimensional sand table model of the diesel power station I and the three-dimensional sand table model of the diesel power station I. The 10kV bus II-21 is also provided with simulation switches 1-GAH7, 1-GAH8, 1-GAH9, 1-GAH10 and 1-GAH11; the 10kV bus II-21 is connected to the 10kV bus I-21 through the simulation switch 1-GAH7;

[0097] The 10kV switchgear I three-dimensional sandbox model is provided with 10kV busbar I-31 and 10kV busbar II-31. The 10kV busbar I-31 is connected with analog switch 1-GAH5 through analog switch 1-KAH1; the 10kV busbar I-31 is provided with analog switch 1-KAH3 and analog switch 1-KAH4; the 10kV busbar II-31 is connected with analog switch 1-GAH8 through analog switch 1-KAH2; the 10kV busbar II-31 is provided with analog switch 1-KAH6, analog switch 1-KAH7, analog switch 1-KAH8, analog switch 1-KAH9 and analog switch 1-KAH10.

[0098] In this embodiment, the 35kV substation II three-dimensional sandbox model is provided with 35kV busbar I-2, 35kV busbar II-2, 10kV busbar I-12, and 10kV busbar II-12. A transformer 2-BY1 is provided between the 35kV busbar I-2 and the 10kV busbar I-12, an analog switch 2-AH3 is provided between the 35kV busbar I-2 and the transformer 2-BY1, an analog switch 2-BAH1 is provided between the transformer 2-BY1 and the 10kV busbar I-12, and an analog switch 2-BAH3 and an analog switch 2-BAH4 are provided on the 10kV busbar I-12;

[0099] An analog switch 2-AH1 is provided between the 35kV busbar I-2 and the upper 110kV substation II, an analog switch 2-AH5 is provided between the 35kV busbar II-2 and the 35kV busbar I-2, a transformer 2-BY2 ​​is provided between the 35kV busbar II-2 and the 10kV busbar II-12, an analog switch 2-AH6 is provided between the 35kV busbar II-2 and the transformer 2-BY2, an analog switch 2-BAH2 is provided between the transformer 2-BY2 ​​and the 10kV busbar II-12, and an analog switch 2-BAH5, an analog switch 2-BAH7 and an analog switch 2-BAH8 are provided on the 10kV busbar II-12; the 10kV busbar II-12 is connected to the 10kV busbar I-12 through the analog switch 2-BAH5;

[0100] The 10kV switch station II three-dimensional sandbox model is provided with 10kV busbar I-22 and 10kV busbar II-22. The 10kV busbar I-22 is connected to the analog switch 2-BAH4 through the analog switch 2-GAH1; the 10kV busbar I-22 is connected to the analog switch 2-GAH3, the analog switch 2-GAH4 and the analog switch 2-GAH5; the 10kV busbar II-22 is connected to the analog switch 2-BAH7 through the analog switch 2-GAH2 in one way and to the analog switch 2-GAH13 and the analog switch 2-GAH5 in the other way. FAH3 is connected to the 10kV bus in the three-dimensional sand table model of the diesel power station II; a simulation switch 2-FAH1 is connected between the 10kV bus in the three-dimensional sand table model of the diesel power station II and the three-dimensional sand table model of the diesel power station II, and the 10kV bus II-22 is also provided with simulation switches 2-GAH7, 2-GAH8, 2-GAH9, 2-GAH10 and 2-GAH11; the 10kV bus II-22 is connected to the 10kV bus I-22 through the simulation switch 2-GAH7;

[0101] The 10kV switchgear II three-dimensional sandbox model is provided with 10kV busbar I-32 and 10kV busbar II-32. The 10kV busbar I-32 is connected to the analog switch 2-GAH5 through the analog switch 2-KAH1; the 10kV busbar I-32 is provided with analog switch 2-KAH3 and analog switch 2-KAH4; the 10kV busbar II-32 is connected to the analog switch 2-GAH8 through the analog switch 2-KAH2; the 10kV busbar II-32 is provided with analog switch 2-KAH6, analog switch 2-KAH7, analog switch 2-KAH8, analog switch 2-KAH9 and analog switch 2-KAH10.

[0102] In this embodiment, the 1# user model is provided with a 10kV bus 1, a transformer BYQ1 and a 1# load, the 2# user model is provided with a 10kV bus 2, a transformer BYQ2 and a 2# load, the 3# user model is provided with a 10kV bus 3, a transformer BYQ3 and a 3# load, and the 4# user model is provided with a 10kV bus 4, a transformer BYQ4 and a 4# load;

[0103] The 10kV bus 1 is provided with an analog switch 1-YAH1 and an analog switch 1-YAH4, an analog switch YAH11 is connected between the 10kV bus 1 and the transformer BYQ1, and the output of the transformer BYQ1 is connected to the 1# load; the 10kV bus 2 is provided with an analog switch 2-YAH1 and an analog switch 2-YAH5, an analog switch YAH12 is connected between the 10kV bus 2 and the transformer BYQ2, and the output of the transformer BYQ2 is connected to the 2# load; the 10kV bus 3 is provided with an analog switch 3-YAH1 and an analog switch 3-YAH4, and an analog switch YAH1 is connected between the 10kV bus 3 and the transformer BYQ3 3. The output of the transformer BYQ3 is connected to the 3# load; the 10kV bus 4 is provided with an analog switch 4-YAH1 and an analog switch 4-YAH4, an analog switch YAH14 is connected between the 10kV bus 4 and the transformer BYQ4, and the output of the transformer BYQ4 is connected to the 4# load; the analog switch 1-YAH1 is connected to the analog switch 1-KAH9, the analog switch 1-YAH4 is connected to the analog switch 2-YAH1, the analog switch 2-YAH5 is connected to the analog switch 3-YAH1, the analog switch 3-YAH4 is connected to the analog switch 4-YAH1, and the analog switch 4-YAH4 is connected to the analog switch 2-KAH3.

[0104] In this embodiment, the 5# user model is provided with a 10kV bus 5, a transformer BYQ5 and a 5# load, the 6# user model is provided with a 10kV bus 6, a transformer BYQ6 and a 6# load, the 7# user model is provided with a 10kV bus 7, a transformer BYQ7 and a 7# load, and the 8# user model is provided with a 10kV bus 8, a transformer BYQ8 and an 8# load;

[0105] The 10kV bus 5 is provided with an analog switch 5-YAH1 and an analog switch 5-YAH4, an analog switch YAH15 is connected between the 10kV bus 5 and the transformer BYQ5, and the output of the transformer BYQ5 is connected to the 5# load; the 10kV bus 6 is provided with an analog switch 6-YAH1 and an analog switch 6-YAH4, an analog switch YAH16 is connected between the 10kV bus 6 and the transformer BYQ6, and the output of the transformer BYQ6 is connected to the 6# load; the 10kV bus 7 is provided with an analog switch 7-YAH1 and an analog switch 7-YAH5, and an analog switch YAH1 is connected between the 10kV bus 7 and the transformer BYQ7 7, the output of the transformer BYQ7 is connected to the 7# load; the 10kV bus 8 is provided with an analog switch 8-YAH1 and an analog switch 8-YAH4, an analog switch YAH18 is connected between the 10kV bus 8 and the transformer BYQ8, and the output of the transformer BYQ8 is connected to the 8# load; the analog switch 5-YAH1 is connected to the analog switch 1-KAH3, the analog switch 5-YAH4 is connected to the analog switch 6-YAH1, the analog switch 6-YAH4 is connected to the analog switch 7-YAH1, the analog switch 7-YAH5 is connected to the analog switch 8-YAH1, and the analog switch 8-YAH4 is connected to the analog switch 2-KAH9.

[0106] The inter-ring contact switch includes an analog switch 2-YAH4 arranged on the 10kV bus 2 and an analog switch 7-YAH4 arranged on the 10kV bus 7, and the analog switch 2-YAH4 is connected to the analog switch 7-YAH4.

[0107] In this embodiment, the analog switch uses a square red indicator light. When the analog switch is closed, the computer controls the square red indicator light to light up; when the analog switch is opened, the computer controls the square red indicator light to turn off.

[0108] The 35kV busbar is simulated by a green luminous line with a diameter of 2.3mm. When the 35kV busbar is energized, the computer controls the green luminous line to light up; when the 35kV busbar is de-energized, the computer controls the green luminous line to turn off.

[0109] The 10kV busbar is simulated by a yellow luminous line with a diameter of 2.0mm. When the 10kV busbar is energized, the computer controls the yellow luminous line to light up; when the 10kV busbar is de-energized, the computer controls the yellow luminous line to turn off.

[0110] The simulated switches are connected through a 35kV power supply line or a 10kV power supply line. The 35kV power supply line is simulated by a blue luminous line with a diameter of 2.0mm, and the 10kV power supply line is simulated by a blue luminous line with a diameter of 1.3mm. The computer controls the lighting and extinguishing of the blue luminous line with a diameter of 2.0mm and the blue luminous line with a diameter of 1.3mm to correspond to the conduction and cutoff of the 35kV power supply line and the 10kV power supply line respectively.

[0111] The 1# to 8# loads are simulated by square white indicator lights, and the computer controls the lighting and extinguishing of the square white indicator lights to correspond to the power on and power off of the simulated user loads.

[0112] In this embodiment, Figure 1 As shown in the figure, the solid red rectangular box represents the closed state of the analog switch, and the hollow red-edged rectangular box represents the open state of the analog switch; when a certain line section fails, the multi-source and multi-loop complex distribution network will transfer power through fault-fault transfer and switch to the fault transfer mode corresponding to the current fault type to ensure uninterrupted power supply on the user side.

[0113] In this embodiment, the network architecture of the entire multi-source and multi-loop complex distribution network is displayed in three-dimensional space in equal proportion, so that system operation and maintenance managers can form an intuitive impression.

[0114] In this embodiment, the teaching effect is further enhanced through the voice broadcast module prompt and the configuration touch screen synchronous display, which facilitates the learning of system operation and maintenance management personnel.

[0115] In this embodiment, transformers BYQ1 to BYQ8 are used to convert the 10 kV bus into a voltage required by user loads.

[0116] like Figure 2 The logic control method of the principle teaching device of a multi-source multi-loop complex distribution network shown in the figure comprises the following steps:

[0117] Step 1: Setting of fault types in different areas:

[0118] Step 101, setting the lines of the 35kV substation I three-dimensional sand table model and the 35kV substation II three-dimensional sand table model to be normal, and then there are user group faults, switch station faults, and switch station faults;

[0119] Step 102, setting the user group fault type to include: user group loop 1 left incoming line power failure, user group loop 2 left incoming line power failure, user group loop 1 right incoming line power failure, user group loop 2 right incoming line power failure, user group loop 1 double-end incoming line power failure and user group loop 2 double-end incoming line power failure;

[0120] The types of switchgear faults include: 10kV switchgear I left incoming line power failure, 10kV switchgear I right incoming line power failure, 10kV switchgear II left incoming line power failure and 10kV switchgear II right incoming line power failure;

[0121] The types of switch station faults include: 10kV switch station I left incoming line power failure, 10kV switch station I right incoming line power failure, 10kV switch station II left incoming line power failure, 10kV switch station II right incoming line power failure, 10kV switch station I double-end incoming line power failure and 10kV switch station II double-end incoming line power failure;

[0122] Step 2: Logical control of fault types in different areas:

[0123] Step 201, when the left side incoming line power failure type of user group loop 1 is selected: 1# user model and 2# user model will be powered off, and the computer will be controlled according to the following logic:

[0124]

[0125] The power is transferred from 10kV bus I-32 in 10kV switch station II to make A 1# and A 2# is 1, then the 1# user model and the 2# user model are powered; where, Indicates logical negation, · Indicates logical AND; B II-31 Indicates the power-off status of 10kV busbar II-31 in 10kV switchgear I, B I-32 Indicates the power-off and power-on status of the 10kV busbar I-32 in the 10kV switch station II, and the power-off and power-on status are all 0 or 1; 4YAH4 indicates the opening and closing status of the analog switch 4-YAH4, 4YAH1 indicates the opening and closing status of the analog switch 4-YAH1, 3YAH4 indicates the opening and closing status of the analog switch 3-YAH4, 3YAH1 indicates the opening and closing status of the analog switch 3-YAH1, 2YAH5 indicates the opening and closing status of the analog switch 2-YAH5, 2YAH1 indicates the opening and closing status of the analog switch 2-YAH1, 1YAH4 indicates the opening and closing status of the analog switch 1-YAH4, and the opening and closing status are all 0 or 1; A 1#用户 Indicates the power-off and power-on status of the 1# user model; A 2#用户 Indicates the power-off and power-on status of the 2# user model;

[0126] When the left side incoming line power failure type of user group loop 2 is selected: 5# user model, 6# user model and 7# user model will be powered off, and the computer will follow the logical control formula as follows:

[0127]

[0128]

[0129] The power is transferred from 10kV bus II-32 in 10kV switch station II to make A 7# , A 6# and A 5# is 1, then the 5# user model, 6# user model and 7# user model are powered; among them, B I-31 Indicates the power-off status of 10kV busbar I-31 in 10kV switch station I, B II-32 Indicates the power-off and power-on status of 10kV bus II-32 in 10kV switch station II, 8YAH4 indicates the opening and closing status of analog switch 8-YAH4, 8YAH1 indicates the opening and closing status of analog switch 8-YAH1, 7YAH5 indicates the opening and closing status of analog switch 7-YAH5, 7YAH1 indicates the opening and closing status of analog switch 7-YAH1, 6YAH4 indicates the opening and closing status of analog switch 6-YAH4, 6YAH1 indicates the opening and closing status of analog switch 6-YAH1, 5YAH4 indicates the opening and closing status of analog switch 5-YAH4; A 7# Indicates the power-off and power-on status of the 7# user model, A 6# Indicates the power-off and power-on status of the 6# user model, A 5# Indicates the power-off and power-on status of the 5# user model;

[0130] When the fault type of power failure of the right incoming line of user group loop 1 is selected: the 3# user model and the 4# user model will be powered off, and the computer will follow the logical control formula as follows:

[0131]

[0132] The power is transferred from 10kV bus II-31 in 10kV switch station I to make A 3# and A 4# is 1, then the 3# user model and the 4# user model are powered; among them, B I-32 Indicates the power-off status of 10kV busbar I-32 in 10kV switch station II, B II-31 Indicates the power-off and power-on status of 10kV bus II-31 in 10kV switchgear I, 1YAH1 indicates the opening and closing status of analog switch 1-YAH1, 3YAH1 indicates the opening and closing status of analog switch 3-YAH1, A 3# Indicates the power-off and power-on status of the 3# user model; A 4# Indicates the power-off and power-on status of the 4# user model;

[0133] When the fault type of power failure of the right incoming line of user group loop 2 is selected: the 8# user model will be powered off, and the computer will follow the logical control formula as follows:

[0134] The power is transferred from the 10kV busbar I-31 in the 10kV switch station I to enable A 8# is 1, then the 8# user model is powered; among them, B II-32 Indicates the power-off status of 10kV busbar II-32 in 10kV switch station II, B I-31 Indicates the power-off and power-on status of the 10kV busbar I-31 in the 10kV switch station I; 5YAH1 indicates the opening and closing status of the analog switch 5-YAH1, 7YAH5 indicates the opening and closing status of the analog switch 7-YAH5, 8YAH1 indicates the opening and closing status of the analog switch 8-YAH1, A 8# Indicates the power-off and power-on status of the 8# user model;

[0135] When the double-end incoming line power failure type of user group loop 1 is selected: 1# user model, 2# user model, 3# user model and 4# user model will be powered off, and the computer will follow the logical control formula as follows:

[0136]

[0137]

[0138]

[0139] The power transfer is obtained from the user group loop 2 so that A 1# , A 2# , A 3# and A 4# If it is 1, then the 1# user model, 2# user model, 3# user model and 4# user model are powered; among them, 2YAH4 represents the opening and closing state of the analog switch 2-YAH4, and 7YAH4 represents the opening and closing state of the analog switch 7-YAH4;

[0140] When the double-end incoming line power failure type of user group loop 2 is selected: 5# user model, 6# user model, 7# user model and 8# user model will be powered off, and the computer will follow the logical control formula as follows:

[0141]

[0142]

[0143]

[0144] The power is transferred from user group loop 1 to make A 5# , A 6# , A 7# and A 8# If it is 1, then the 5# user model, 6# user model, 7# user model and 8# user model are powered;

[0145] Step 202, when the left side incoming line power failure type of 10kV switchgear I is selected: the analog switch 1-KAH1 of 10kV switchgear I is opened, and the 10kV bus I-31 of 10kV switchgear I will lose power, and the computer will control according to the following logic formula:

[0146] The power is transferred from the 10kV bus II-31 of the 10kV switch station I to enable B I-31 is 1, then the 10kV bus I-31 of the 10kV switch station I is energized; where B II-31 Indicates the power-off and power-on status of 10kV bus II-31 in 10kV switchgear I; 1KAH1 indicates the opening and closing status of analog switch 1-KAH1, B I-31 Indicates the power-off and power-on status of the 10kV busbar I-31 in the 10kV switch station I; 1KAH2 indicates the opening and closing status of the analog switch 1-KAH2, and 1KAH6 indicates the opening and closing status of the analog switch 1-KAH6;

[0147] When the right side incoming line power failure type of 10kV switchgear I is selected: the analog switch 1-KAH2 of 10kV switchgear I is opened, and the 10kV bus II-31 of 10kV switchgear I will lose power. The computer will control according to the logic formula as follows: The power is transferred from the 10kV busbar I-31 of the 10kV switch station I to enable B II-31 If it is 1, the 10kV bus II-31 of 10kV switch station I is energized;

[0148] When the left side incoming line power failure type of 10kV switch station II is selected: the analog switch 2-KAH1 of 10kV switch station II is opened, and the 10kV bus I-32 of 10kV switch station II will lose power. The computer will control according to the logic formula as follows:

[0149] The power is transferred from the 10kV bus II-32 of the 10kV switch station II to enable B I-32 is 1, then the 10kV busbar I-32 of the 10kV switchgear II is energized; I-32Indicates the power-off and power-on status of 10kV busbar I-32 in 10kV switch station II, 2KAH1 indicates the opening and closing status of analog switch 2-KAH1, 2KAH2 indicates the opening and closing status of analog switch 2-KAH2, and 2KAH6 indicates the opening and closing status of analog switch 1-KAH6; B II-32 Indicates the power-off and power-on status of 10kV bus II-32 in 10kV switch station II;

[0150] When the right side incoming line power failure type of 10kV switch station II is selected: the analog switch 2-KAH2 of 10kV switch station II is opened, and the 10kV bus II-32 of 10kV switch station II will lose power. The computer will control according to the logic formula as follows:

[0151] The power is transferred from the 10kV busbar I-32 of the 10kV switch station II to enable B II-32 If it is 1, the 10kV bus I-32 of 10kV switch station II is energized;

[0152] Step 203, when the left incoming line power failure type of 10kV switch station I is selected: the analog switch 1-GAH1 of the 10kV switch station I is opened, and the 10kV bus I-21 of the 10kV switch station I will lose power. The computer controls according to the following logic formula:

[0153] The 10kV bus II-21 of the 10kV switch station I is used to transfer power to B I-21 is equal to 1, then the 10kV bus I-21 of the 10kV switch station I remains energized; where B I-21 Indicates the power-off and power-on status of the 10kV busbar I-21 in the 10kV switch station I, 1GAH1 indicates the opening and closing status of the analog switch 1-GAH1, 1GAH7 indicates the opening and closing status of the analog switch 1-GAH7, B II-21 Indicates the power-off and power-on status of 10kV bus II-21 in 10kV switch station I, and 1GAH2 indicates the opening and closing status of analog switch 1-GAH2;

[0154] When the right incoming line power failure type of 10kV switch station I is selected: the analog switch 1-GAH2 of 10kV switch station I will be opened, and the 10kV bus II-21 of 10kV switch station I will lose power. The computer will control according to the logic formula as follows:

[0155] The 10kV busbar I-21 of the 10kV switch station I is used to transfer power to B II-21 If it is equal to 1, the 10kV bus II-21 of the 10kV switch station I remains energized;

[0156] When the left incoming line power failure type of 10kV switch station II is selected: the analog switch 2-GAH1 of 10kV switch station II is opened, and the 10kV bus I-22 of 10kV switch station II will lose power. The computer will control according to the logic formula as follows:

[0157] The 10kV busbar II-22 of the 10kV switch station II is used to transfer power to B I-22 is equal to 1, then the 10kV bus I-22 of the 10kV switch station II remains energized; where B I-22 Indicates the power-off and power-on status of 10kV busbar I-22 in 10kV switch station II, 2GAH1 indicates the opening and closing status of analog switch 2-GAH1, 2GAH7 indicates the opening and closing status of analog switch 2-GAH7, B II-22 Indicates the power-off and power-on status of 10kV bus II-22 in 10kV switch station II. 2GAH2 indicates the opening and closing status of analog switch 2-GAH2.

[0158] When the right incoming line power failure type of 10kV switch station II is selected: the analog switch 2-GAH2 of 10kV switch station II will be opened, and the 10kV bus II-22 of 10kV switch station II will lose power. The computer will control the logic as follows:

[0159] The 10kV busbar I-22 of the 10kV switch station II is used to transfer power to B II-22 If it is 1, the 10kV bus II-22 of the 10kV switch station II remains energized;

[0160] When the 10kV switch station I double-end incoming line power failure type is selected: the analog switch 1-GAH1 and the analog switch 1-GAH2 of the 10kV switch station I are opened, the 10kV busbar I-21 and the 10kV busbar II-21 of the 10kV switch station I will lose power, and the computer will control according to the logic formula as follows:

[0161]

[0162] Obtain power from diesel power station I to enable B II-21 and B I-21If all are 1, the 10kV busbar I-21 and 10kV busbar II-21 of the 10kV switch station I remain energized; among them, 1FAH1 represents the opening and closing status of the analog switch 1-FAH1, 1FAH3 represents the opening and closing status of the analog switch 1-FAH3, 1GAH13 represents the opening and closing status of the analog switch 1-GAH13, 1GAH2 represents the opening and closing status of the analog switch 1-GAH2; 1GAH7 represents the opening and closing status of the analog switch 1-GAH7; 1GAH1 represents the opening and closing status of the analog switch 1-GAH1;

[0163] When the 10kV switch station II double-end incoming line power failure type is selected: the analog switch 2-GAH1 and the analog switch 2-GAH2 of the 10kV switch station II are opened, the 10kV busbar I-22 and the 10kV busbar II-22 of the 10kV switch station II will lose power, and the computer will control according to the logic formula as follows:

[0164]

[0165] Obtain power from the diesel power station II to enable B II-22 and B I-22 If both are 1, the 10kV busbar I-21 and 10kV busbar II-21 of the 10kV switch station II remain energized; II-22 Indicates the power-off and power-on status of 10kV busbar II-22 of 10kV switch station II; 2FAH1 indicates the opening and closing status of analog switch 2-FAH1, 2FAH3 indicates the opening and closing status of analog switch 2-FAH3, 2GAH13 indicates the opening and closing status of analog switch 2-GAH13, and 2GAH2 indicates the opening and closing status of analog switch 2-GAH2; B I-22 It indicates the power-off and power-on status of the 10kV busbar I-22 of the 10kV switch station II; 2GAH7 indicates the opening and closing status of the analog switch 2-GAH7; 2GAH1 indicates the opening and closing status of the analog switch 2-GAH1.

[0166] In this embodiment, the following steps are also included:

[0167] Step A, using a computer to use KingView software to establish a multi-source multi-loop complex distribution network model that is the same as the multi-source multi-loop complex distribution network three-dimensional sandbox, and displaying the multi-source multi-loop complex distribution network model through a configuration touch screen;

[0168] Step B: The configuration touch screen is provided with a fault type selection button and a fault power supply transfer button;

[0169] Step C: The system maintenance personnel selects the corresponding fault type through the fault type selection button, and then operates the fault power supply transfer button;

[0170] Step D: The computer selects the corresponding logic control type from step 2 according to the fault type selected by the system maintenance personnel to realize the fault power supply transfer, and prompts the analog switch whose current opening and closing status is changing through the voice broadcast module, and the configuration touch screen displays it synchronously for intuitive viewing.

[0171] In this embodiment, when used specifically, the value is 1 when the analog switch is in the closed state; the value is 0 when the analog switch is in the open state; the value is 1 when the busbar is energized; and the value is 0 when the busbar is de-energized.

[0172] like Figure 1 As shown, in this embodiment, the power supply of the user group loop 1 includes the 10kV bus II-31 of the 10kV switch station I and the 10kV bus I-32 of the 10kV switch station II, and the 1# user model and the 2# user model are powered by the 10kV bus II-31 of the 10kV switch station I, while the 3# user model and the 4# user model are powered by the 10kV bus I-32 of the 10kV switch station II. If a fault occurs on the left side of the user group loop 1 and causes power failure, the 10kV bus II-31 of the 10kV switch station I will lose power, while the 10kV bus I-32 of the 10kV switch station II will remain powered. At this time, the 1# user model and the 2# user model will be out of power. If the 1# user model and the 2# user model are to be powered, it is necessary to obtain power transfer from the 10kV bus I-32 of the 10kV switch station II. According to (1-1) and (1-2), in B II-31 is "0", B I-32 When 4YAH4, 4YAH1, and 3YAH4 are "1", 3YAH1 and 2YAH5 need to be changed from "0" to "1", and the analog switches 3-YAH1 and 2-YAH5 change from the open state to the closed state. At the same time, the voice broadcast module prompts the analog switches 3-YAH1 and 2-YAH5 that are changing, and the configuration touch screen displays synchronously for intuitive viewing.

[0173] In this embodiment, the power supply of user group loop 2 includes the 10kV bus I-31 of 10kV switch station I and the 10kV bus II-32 of 10kV switch station II, and 5# user, 6# user and 7# user are powered by the 10kV bus I-31 of 10kV switch station I, while 8# user is powered by the 10kV bus II-32 of 10kV switch station II. If a fault occurs on the left side of user group loop 2, causing power outage, the 10kV bus I-31 of 10kV switch station I will lose power, while the 10kV bus II-32 of 10kV switch station II will remain energized. At this time, users 5#, 6# and 7# will lose power. To enable users 5#, 6# and 7# to regain power, it is necessary to obtain power transfer from the 10kV bus II-32 of 10kV switch station II. The computer will calculate the power supply in B according to (2-1), (2-2) and (2-3). I-31 is "0", B II-32 If the analog switches 8-YAH1 and 7-YAH5 are changed from "0" to "1", and 8YAH4, 7YAH1, 6YAH4, 6YAH1 and 5YAH4 are "1", then the analog switches 8-YAH1 and 7-YAH5 will change from the open state to the closed state. The voice broadcast module will prompt the analog switches 8-YAH1 and 7-YAH5 that the current fault type is changing, and the touch screen will display it synchronously.

[0174] In this embodiment, if a fault occurs on the right side of user group loop 1, causing power outage, 10kV bus I-32 of 10kV switch station II will lose power, while 10kV bus II-31 of 10kV switch station I will remain powered. At this time, user 3# and user 4# will lose power. To enable user 3# and user 4# to gain power, it is necessary to obtain power transfer from 10kV bus II-31 of 10kV switch station I. The computer, based on (3-1) and (3-2), generates a power transfer signal at B. I-32 is "0", B II-31 When 1YAH1, 1YAH4, and 2YAH1 are in the "1" state, 2YAH5 and 3YAH1 need to be changed from "0" to "1", and then analog switch 2-YAH5 and analog switch 3-YAH1 will change from the open state to the closed state. The voice broadcast module prompts that the current fault type is changing, and the touch screen of analog switch 2-YAH5 and analog switch 3-YAH1 configuration is displayed synchronously.

[0175] In this embodiment, if a fault occurs on the right side of user group loop 2, causing power outage, 10kV bus II-32 of 10kV switch station II will lose power, while 10kV bus I-31 of 10kV switch station I will remain powered. At this time, user 8# will lose power. To enable user 8# to gain power, it is necessary to obtain power transfer from 10kV bus I-31 of 10kV switch station I. The computer then calculates the power supply from B according to (4-1). II-32is "0", B I-31 When 5YAH1, 5YAH4, 6YAH1, 6YAH4, and 7YAH1 are in the "1" state, 7YAH5 and 8YAH1 need to be changed from "0" to "1", and then the analog switches 7-YAH5 and 8-YAH1 will change from the open state to the closed state. The voice broadcast module will prompt that the current fault type is changing, and the touch screen of the analog switch 7-YAH5 and the analog switch 8-YAH1 configuration will be displayed synchronously.

[0176] In this embodiment, if both sides of the user group loop 1 fail and lose power, the 10kV bus II-31 of the 10kV switch station I and the 10kV bus I-32 of the 10kV switch station II lose power. At this time, the 1# user, the 2# user, the 3# user and the 4# user will lose power. If the 1# user, the 2# user, the 3# user and the 4# user need to be powered on, it is necessary to obtain power transfer from the user group loop 2. The computer performs the following operations according to (5-1) to (5-4) at B II-31 is "0", B I-32 When 7YAH4 and 2YAH4 are changed from "0" to "1", the analog switches 7-YAH4 and 2-YAH4 change from open to closed; when 2YAH5 and 3YAH1 change from "0" to "1", the analog switches 2-YAH5 and 3-YAH1 change from open to closed. The voice broadcast module prompts that the current fault type is changing, and the touch screen of the analog switch 2-YAH5 and the analog switch 3-YAH1 configuration is displayed synchronously.

[0177] In this embodiment, if both sides of the user group loop 2 fail and lose power, the 10kV bus I-31 of the 10kV switch station I and the 10kV bus II-32 of the 10kV switch station II will lose power. At this time, users 5#, 6#, 7# and 8# will lose power. If users 5#, 6#, 7# and 8# need to be powered on, they need to obtain power transfer from the user group loop 1. The computer will perform the following operations according to (6-1) to (6-4) at B I-31 is "0", B II-32 When 7YAH4 and 2YAH4 are "0" and 7YAH1, 6YAH4, 5YAH4 and 6YAH1 are "1", it is necessary to change 7YAH4 and 2YAH4 from "0" to "1", and 7YAH5 and 8YAH1 from "0" to "1", then analog switch 7-YAH5 and analog switch 8-YAH1 will change from open state to closed state. The voice broadcast module will prompt that the current fault type is changing, and the touch screen of analog switch 7-YAH5 and analog switch 8-YAH1 will be displayed synchronously.

[0178] In this embodiment, the power supply of the 10kV switch station I includes the 10kV bus I-21 of the 10kV switch station I and the 10kV bus II-21 of the 10kV switch station I, and the 10kV bus I-31 of the 10kV switch station I is powered by the 10kV bus I-21 of the 10kV switch station I, and the 10kV bus II-31 of the 10kV switch station I is powered by the 10kV bus II-21 of the 10kV switch station I. If the left incoming line of the 10kV switch station I fails and loses power, the analog switch 1-KAH1 of the 10kV switch station I will be opened, the 10kV bus I-31 of the 10kV switch station I will lose power, and the 10kV bus II-31 of the 10kV switch station I will remain powered. If the 10kV bus I-31 of the 10kV switch station I is to be energized, it is necessary to obtain power transfer from the 10kV bus II-31 of the 10kV switch station I. The computer calculates the power supply in B according to (7-1). II-31 When 1KAH2 is "1" and 1KAH1 is "0", 1KAH6 needs to be changed from "0" to "1", and the analog switch 1-KAH6 changes from the open state to the closed state. The voice broadcast module prompts the analog switch 1-KAH6 configuration touch screen to synchronously display the current fault type that is changing.

[0179] In this embodiment, if the right incoming line of the 10kV switch station I fails and causes power failure, the analog switch 1-KAH2 of the 10kV switch station I will be opened, and the 10kV bus II-31 of the 10kV switch station I will lose power, while the 10kV bus I-31 of the 10kV switch station I will remain energized. If the 10kV bus II-31 of the 10kV switch station I is to be energized, it is necessary to obtain power transfer from the 10kV bus I-31 of the 10kV switch station I. The computer, according to (7-2), I-31 When 1KAH1 is "1" and 1KAH2 is "0", 1KAH6 needs to be changed from "0" to "1", and the analog switch 1-KAH6 changes from the open state to the closed state. The voice broadcast module prompts the analog switch 1-KAH6 configuration touch screen to display the current fault type changing synchronously.

[0180] In this embodiment, the power supply of 10kV switch station II includes 10kV bus I-32 of 10kV switch station II and 10kV bus II-32 of 10kV switch station II, and 10kV bus I-32 of 10kV switch station II is powered by 10kV bus I-22 of 10kV switch station II, while 10kV bus II-32 of 10kV switch station II is powered by 10kV bus II-22 of 10kV switch station II. If the left incoming line of 10kV switch station II fails and loses power, the analog switch 2-KAH1 of 10kV switch station II will be opened, 10kV bus I-32 of 10kV switch station II will lose power, and 10kV bus II-32 of 10kV switch station II will remain powered. If the 10kV bus I-32 of the 10kV switch station II is to be energized, it is necessary to obtain power transfer from the 10kV bus II-32 of the 10kV switch station II. The computer will calculate the power supply in B according to (8-1). II-32 When 2KAH2 is "1" and 2KAH1 is "0", 2KAH6 needs to be changed from "0" to "1", and the analog switch 2-KAH6 changes from the open state to the closed state. The voice broadcast module prompts the analog switch 2-KAH6 configuration touch screen to synchronously display the current fault type is changing.

[0181] In this embodiment, if the right incoming line of 10kV switch station II fails and causes power failure, the analog switch 2-KAH2 of 10kV switch station II will be opened, and 10kV bus II-32 of 10kV switch station II will lose power, while 10kV bus I-32 of 10kV switch station II will remain powered. If 10kV bus II-32 of 10kV switch station II is to be powered, it is necessary to obtain power transfer from 10kV bus I-32 of 10kV switch station II. The computer will calculate the power transfer from B according to (8-2). I-32 When 2KAH1 is "1" and 2KAH2 is "0", 2KAH6 needs to be changed from "0" to "1", and the analog switch 2-KAH6 changes from the open state to the closed state. The voice broadcast module prompts the analog switch 2-KAH6 configuration touch screen to display the current fault type changing synchronously.

[0182] In this embodiment, the power supply of the 10kV switch station I includes the 10kV bus I-11 of the 35kV substation I and the 10kV bus II-11 of the 35kV substation I, and the 10kV bus I-21 of the 10kV switch station I is powered by the 10kV bus I-11 of the 35kV substation I, while the 10kV bus II-21 of the 10kV switch station I is powered by the 10kV bus II-11 of the 35kV substation I. If a fault occurs in the left incoming line of the 10kV switch station I, resulting in power failure, the analog switch 1-GAH1 of the 10kV switch station I will be opened, the 10kV bus I-21 of the 10kV switch station I will lose power, and the 10kV bus II-21 of the 10kV switch station I will remain powered. If the 10kV bus I-21 of the 10kV switch station I is to be energized, it is necessary to obtain power transfer from the 10kV bus II-21 of the 10kV switch station I. The computer calculates the power transfer from B according to (9-1). II-21 When 1GAH2 is "1" and 1GAH1 is "0", 1GAH7 needs to be changed from "0" to "1", and the analog switch 1-GAH7 changes from the open state to the closed state. The voice broadcast module prompts the analog switch 1-GAH7 configuration touch screen to synchronously display the current fault type that is changing.

[0183] In this embodiment, if a fault occurs in the right incoming line of the 10kV switch station I, resulting in power failure, the analog switch 1-GAH2 of the 10kV switch station I will be opened, and the 10kV bus II-21 of the 10kV switch station I will lose power, while the 10kV bus I-21 of the 10kV switch station I will remain energized. If the 10kV bus II-21 of the 10kV switch station I is to be energized, it is necessary to obtain power transfer from the 10kV bus I-21 of the 10kV switch station I. The computer then, according to (9-2), in B I-21 When 1GAH1 is "1" and 1GAH2 is "0", 1GAH7 needs to be changed from "0" to "1", and the analog switch 1-GAH7 changes from the open state to the closed state. The voice broadcast module prompts the analog switch 1-GAH7 configuration touch screen to synchronously display the current fault type is changing.

[0184] In this embodiment, the power supply of 10kV switch station II includes 10kV bus I-12 of 35kV substation II and 10kV bus II-12 of 35kV substation II, and 10kV bus I-22 of 10kV switch station II is powered by 10kV bus I-12 of 35kV substation II, while 10kV bus II-22 of 10kV switch station II is powered by 10kV bus II-12 of 35kV substation II. If a fault occurs in the left incoming line of 10kV switch station II, resulting in power failure, analog switch 2-GAH1 of 10kV switch station II will be opened, 10kV bus I-22 of 10kV switch station II will lose power, while 10kV bus II-22 of 10kV switch station II will remain powered. If the 10kV bus I-22 of the 10kV switch station II is to be energized, it is necessary to obtain power transfer from the 10kV bus II-22 of the 10kV switch station II. The computer calculates the power transfer from B according to (9-3). II-22 When 2GAH2 is "1" and 2GAH1 is "0", 2GAH7 needs to be changed from "0" to "1", and the analog switch 2-GAH7 changes from the open state to the closed state. The voice broadcast module prompts the analog switch 2-GAH7 configuration touch screen to synchronously display the current fault type is changing.

[0185] In this embodiment, if the right incoming line of 10kV switch station II fails and causes power outage, the analog switch 2-GAH2 of 10kV switch station II will be opened, and 10kV bus II-22 of 10kV switch station II will lose power, while 10kV bus I-22 of 10kV switch station II will remain energized. If 10kV bus II-22 of 10kV switch station II is to be energized, it is necessary to obtain power transfer from 10kV bus I-22 of 10kV switch station II. The computer will, according to (9-4), I-22 When 2GAH1 is "1" and 2GAH2 is "0", 2GAH7 needs to be changed from "0" to "1", and the analog switch 2-GAH7 changes from the open state to the closed state. The voice broadcast module prompts the analog switch 2-GAH7 configuration touch screen to synchronously display the current fault type is changing.

[0186] In this embodiment, if a fault occurs in the double-end incoming line of the 10kV switch station I, resulting in power failure, the analog switches 1-GAH1 and 1-GAH2 of the 10kV switch station I will be opened, and the 10kV busbars I-21 and 10kV busbars II-21 of the 10kV switch station I will both lose power. If the 10kV busbars I-21 and 10kV busbars II-21 of the 10kV switch station I are to be powered, it is necessary to obtain power transfer from the diesel power station I. According to (9-5) and (9-6), when 1GAH1 and 1GAH2 are in the "0" state, the computer needs to change 1FAH1, 1FAH3, 1GAH13, and 1GAH7 from "0" to "1", so that the analog switches 1-FAH1, 1-FAH3, 1-GAH13, and 1-GAH7 change from the open state to the closed state. The voice broadcast module prompts that the current fault type is changing, and the touch screen of analog switch 1-FAH1, analog switch 1-FAH3, analog switch 1-GAH13 and analog switch 1-GAH7 is synchronously displayed.

[0187] In this embodiment, if the double-end incoming line of 10kV switch station II fails and causes power failure, the analog switches 2-GAH1 and 2-GAH2 of 10kV switch station II will be opened, and the 10kV busbars I-22 and 10kV busbars II-22 of 10kV switch station II will lose power. If the 10kV busbars I-22 and 10kV busbars II-22 of 10kV switch station II are to be powered, it is necessary to obtain power transfer from diesel power station II. According to (9-7) and (9-8), when 2GAH1 and 2GAH1 are in the "0" state, the computer needs to change 2FAH1, 2FAH3, 2GAH13, and 2GAH7 from "0" to "1", so that the analog switches 2-FAH1, 2-FAH3, 2-GAH13, and 2-GAH7 change from the open state to the closed state. The voice broadcast module prompts that the current fault type is changing, and the touch screen of analog switch 2-FAH1, analog switch 2-FAH3, analog switch 2-GAH13 and analog switch 2-GAH7 is displayed synchronously.

[0188] In this embodiment, when used specifically, the voice broadcast module can also prompt the bus and load whose fault types are changing, and the configuration touch screen can also display them synchronously.

[0189] To sum up, the present invention is reasonably designed, and intuitively and vividly demonstrates the network topology, operation mode and principle demonstration of fault power supply and transfer of multi-source and multi-loop complex distribution networks, laying a theoretical foundation for operation and maintenance management of system maintenance personnel.

[0190] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A logic control method for a principle teaching device of a multi-source multi-loop complex distribution network, characterized in that: The method comprises the following steps: Step 1: Setting of fault types in different areas: Step 101, setting the lines of the 35kV substation I three-dimensional sand table model and the 35kV substation II three-dimensional sand table model to be normal, and then there are user group faults, switch station faults, and switch station faults; Step 102, setting the user group fault type to include: user group loop 1 left incoming line power failure, user group loop 2 left incoming line power failure, user group loop 1 right incoming line power failure, user group loop 2 right incoming line power failure, user group loop 1 double-end incoming line power failure and user group loop 2 double-end incoming line power failure; The types of switchgear faults include: 10kV switchgear I left incoming line power failure, 10kV switchgear I right incoming line power failure, 10kV switchgear II left incoming line power failure and 10kV switchgear II right incoming line power failure; The types of switch station faults include: 10kV switch station I left incoming line power failure, 10kV switch station I right incoming line power failure, 10kV switch station II left incoming line power failure, 10kV switch station II right incoming line power failure, 10kV switch station I double-end incoming line power failure and 10kV switch station II double-end incoming line power failure; Step 2: Logical control of fault types in different areas: Step 201: When the left incoming line power failure type of user group loop 1 is selected: 1# user model and 2# The user model will be powered off, and the computer will follow the logic control formula as follows: From 10kV The 10kV bus I-32 in the switch station II receives power transfer, so that A 1# and A 2# is 1, then the 1# user model and the 2# user model are powered; where, Indicates logical negation, · Indicates logical AND; B II-31 Indicates the power-off status of 10kV busbar II-31 in 10kV switchgear I, B I-32 Indicates the power-off and power-on status of the 10kV busbar I-32 in the 10kV switch station II, and the power-off and power-on status are all 0 or 1; 4YAH4 indicates the opening and closing status of the analog switch 4-YAH4, 4YAH1 indicates the opening and closing status of the analog switch 4-YAH1, 3YAH4 indicates the opening and closing status of the analog switch 3-YAH4, 3YAH1 indicates the opening and closing status of the analog switch 3-YAH1, 2YAH5 indicates the opening and closing status of the analog switch 2-YAH5, 2YAH1 indicates the opening and closing status of the analog switch 2-YAH1, 1YAH4 indicates the opening and closing status of the analog switch 1-YAH4, and the opening and closing status are all 0 or 1; A 1#用户 Indicates the power-off and power-on status of the 1# user model; A 2#用户 Indicates the power-off and power-on status of the 2# user model; When the left side incoming line power failure type of user group loop 2 is selected: 5# user model, 6# user model and 7# user model will be powered off, and the computer will follow the logical control formula as follows: The power is transferred from 10kV bus II-32 in 10kV switch station II to make A 7# , A 6# and A 5# is 1, then the 5# user model, 6# user model and 7# user model are powered; among them, B I-31 Indicates the power-off status of 10kV busbar I-31 in 10kV switch station I, B II-32 Indicates the power-off and power-on status of 10kV bus II-32 in 10kV switch station II, 8YAH4 indicates the opening and closing status of analog switch 8-YAH4, 8YAH1 indicates the opening and closing status of analog switch 8-YAH1, 7YAH5 indicates the opening and closing status of analog switch 7-YAH5, 7YAH1 indicates the opening and closing status of analog switch 7-YAH1, 6YAH4 indicates the opening and closing status of analog switch 6-YAH4, 6YAH1 indicates the opening and closing status of analog switch 6-YAH1, 5YAH4 indicates the opening and closing status of analog switch 5-YAH4; A 7# Indicates the power-off and power-on status of the 7# user model, A 6# Indicates the power-off and power-on status of the 6# user model, A 5# Indicates the power-off and power-on status of the 5# user model; When the fault type of power failure of the right incoming line of user group loop 1 is selected: the 3# user model and the 4# user model will be powered off, and the computer will follow the logical control formula as follows: The power is transferred from 10kV bus II-31 in 10kV switch station I to make A 3# and A 4# is 1, then the 3# user model and the 4# user model are powered; among them, B I-32 Indicates 10kV busbar I-32 in 10kV switchgear II The power-off state, B II-31 Indicates the power-off and power-on status of 10kV bus II-31 in 10kV switchgear I, 1YAH1 indicates the opening and closing status of analog switch 1-YAH1, 3YAH1 indicates the opening and closing status of analog switch 3-YAH1, A 3# Indicates the power-off and power-on status of the 3# user model; A 4# Indicates the power-off and power-on status of the 4# user model; When the fault type of power failure of the right incoming line of user group loop 2 is selected: the 8# user model will be powered off, and the computer will follow the logical control formula as follows: The power is transferred from the 10kV busbar I-31 in the 10kV switch station I to enable A 8# is 1, then the 8# user model is powered; among them, B II-32 Indicates the power-off status of 10kV bus II-32 in 10kV switch station II, B I-31 Indicates the power-off and power-on status of the 10kV busbar I-31 in the 10kV switch station I; 5YAH1 indicates the opening and closing status of the analog switch 5-YAH1, 7YAH5 indicates the opening and closing status of the analog switch 7-YAH5, 8YAH1 indicates the opening and closing status of the analog switch 8-YAH1, A 8# Indicates the power-off and power-on status of the 8# user model; When the double-end incoming line power failure type of user group loop 1 is selected: 1# user model, 2# user model, 3# user model and 4# user model will be powered off, and the computer will follow the logical control formula as follows: The power transfer is obtained from the user group loop 2 so that A 1# , A 2# , A 3# and A 4# If it is 1, then the 1# user model, 2# user model, 3# user model and 4# user model are powered; among them, 2YAH4 represents the opening and closing state of the analog switch 2-YAH4, and 7YAH4 represents the opening and closing state of the analog switch 7-YAH4; When the double-end incoming line power failure type of user group loop 2 is selected: 5# user model, 6# user model, 7# user model and 8# user model will be powered off, and the computer will follow the logical control formula as follows: The power is transferred from user group loop 1 to make A 5# , A 6# , A 7# and A 8# If it is 1, then the 5# user model, 6# user model, 7# user model and 8# user model are powered; Step 202, when the left side incoming line power failure type of 10kV switchgear I is selected: the analog switch 1-KAH1 of 10kV switchgear I is opened, and the 10kV bus I-31 of 10kV switchgear I will lose power, and the computer will control according to the following logic formula: The power is transferred from the 10kV bus II-31 of the 10kV switch station I to enable B I-31 is 1, then the 10kV bus I-31 of the 10kV switch station I is energized; where B II-31 Indicates the power-off and power-on status of 10kV bus II-31 in 10kV switchgear I; 1KAH1 indicates the opening and closing status of analog switch 1-KAH1, B I-31 Indicates the power-off and power-on status of the 10kV busbar I-31 in the 10kV switch station I; 1KAH2 indicates the opening and closing status of the analog switch 1-KAH2, and 1KAH6 indicates the opening and closing status of the analog switch 1-KAH6; When the right side incoming line power failure type of 10kV switchgear I is selected: the analog switch 1-KAH2 of 10kV switchgear I is opened, and the 10kV bus II-31 of 10kV switchgear I will lose power. The computer will control according to the logic formula as follows: The power is transferred from the 10kV busbar I-31 of the 10kV switch station I to enable B II-31 If it is 1, the 10kV bus II-31 of the 10kV switch station I is energized; When the left side incoming line power failure type of 10kV switch station II is selected: the analog switch 2-KAH1 of 10kV switch station II is opened, and the 10kV bus I-32 of 10kV switch station II will lose power. The computer will control according to the logic formula as follows: The power is transferred from the 10kV bus II-32 of the 10kV switch station II to enable B I-32 is 1, then the 10kV busbar I-32 of the 10kV switchgear II is energized; I-32 Indicates the power-off and power-on status of 10kV busbar I-32 in 10kV switch station II. 2KAH1 indicates the opening and closing status of analog switch 2-KAH1. 2KAH2 indicates the opening and closing status of analog switch 2-KAH2. The opening and closing status of the analog switch 1-KAH6; 2KAH6 represents the opening and closing status of the analog switch 1-KAH6; B II-32 Indicates the power-off and power-on status of 10kV bus II-32 in 10kV switch station II; When the right side incoming line power failure type of 10kV switch station II is selected: the analog switch 2-KAH2 of 10kV switch station II is opened, and the 10kV bus II-32 of 10kV switch station II will lose power. The computer will control according to the logic formula as follows: The power is transferred from the 10kV busbar I-32 of the 10kV switch station II to enable B II-32 If it is 1, the 10kV bus I-32 of 10kV switch station II is energized; Step 203, when the left incoming line power failure type of 10kV switch station I is selected: the analog switch 1-GAH1 of the 10kV switch station I is opened, and the 10kV bus I-21 of the 10kV switch station I will lose power. The computer controls according to the following logic formula: The 10kV bus II-21 of the 10kV switch station I is used to transfer power to B I-21 is equal to 1, then the 10kV bus I-21 of the 10kV switch station I remains energized; where B I-21 Indicates the power-off and power-on status of the 10kV busbar I-21 in the 10kV switch station I, 1GAH1 indicates the opening and closing status of the analog switch 1-GAH1, 1GAH7 indicates the opening and closing status of the analog switch 1-GAH7, B II-21 Indicates the power-off and power-on status of 10kV bus II-21 in 10kV switch station I, and 1GAH2 indicates the opening and closing status of analog switch 1-GAH2; When the right incoming line power failure type of 10kV switch station I is selected: the analog switch 1-GAH2 of 10kV switch station I will be opened, and the 10kV bus II-21 of 10kV switch station I will lose power. The computer will control according to the logic formula as follows: The 10kV busbar I-21 of the 10kV switch station I is used to transfer power to B II-21 If it is equal to 1, the 10kV bus II-21 of the 10kV switch station I remains energized; When the left incoming line power failure type of 10kV switch station II is selected: the analog switch 2-GAH1 of 10kV switch station II is opened, and the 10kV bus I-22 of 10kV switch station II will lose power. The computer will control according to the logic formula as follows: The 10kV busbar II-22 of the 10kV switch station II is used to transfer power to B I-22 is equal to 1, then the 10kV bus I-22 of the 10kV switch station II remains energized; where B I-22 Indicates the power-off and power-on status of 10kV busbar I-22 in 10kV switch station II, 2GAH1 indicates the opening and closing status of analog switch 2-GAH1, 2GAH7 indicates the opening and closing status of analog switch 2-GAH7, B II-22 Indicates the power-off and power-on status of 10kV bus II-22 in 10kV switch station II. 2GAH2 indicates the opening and closing status of analog switch 2-GAH2. When the right incoming line power failure type of 10kV switch station II is selected: the analog switch 2-GAH2 of 10kV switch station II will be opened, and the 10kV bus II-22 of 10kV switch station II will lose power. The computer will control the logic as follows: The 10kV busbar I-22 of the 10kV switch station II is used to transfer power to B II-22 If it is 1, the 10kV bus II-22 of the 10kV switch station II remains energized; When the 10kV switch station I double-end incoming line power failure type is selected: the analog switch 1-GAH1 and the analog switch 1-GAH2 of the 10kV switch station I are opened, the 10kV busbar I-21 and the 10kV busbar II-21 of the 10kV switch station I will lose power, and the computer will control according to the logic formula as follows: Obtain power from diesel power station I to enable B II-21 and B I-21 If all are 1, the 10kV busbar I-21 and 10kV busbar II-21 of the 10kV switch station I remain energized; among them, 1FAH1 represents the opening and closing status of the analog switch 1-FAH1, 1FAH3 represents the opening and closing status of the analog switch 1-FAH3, 1GAH13 represents the opening and closing status of the analog switch 1-GAH13, 1GAH2 represents the opening and closing status of the analog switch 1-GAH2; 1GAH7 represents the opening and closing status of the analog switch 1-GAH7; 1GAH1 represents the opening and closing status of the analog switch 1-GAH1; When the 10kV switch station II double-end incoming line power failure type is selected: the analog switches 2-GAH1 and 2-GAH2 of the 10kV switch station II are opened, and the 10kV bus I-22 of the 10kV switch station II is The 10kV bus II-22 will lose power, and the computer will control the logic as follows: Obtain power from the diesel power station II to enable B II-22 and B I-22 If both are 1, the 10kV busbar I-21 and 10kV busbar II-21 of the 10kV switch station II remain energized; II-22 Indicates the power-off and power-on status of 10kV busbar II-22 of 10kV switch station II; 2FAH1 indicates the opening and closing status of analog switch 2-FAH1, 2FAH3 indicates the opening and closing status of analog switch 2-FAH3, 2GAH13 indicates the opening and closing status of analog switch 2-GAH13, and 2GAH2 indicates the opening and closing status of analog switch 2-GAH2; B I-22 It indicates the power-off and power-on status of the 10kV busbar I-22 of the 10kV switch station II; 2GAH7 indicates the opening and closing status of the analog switch 2-GAH7; 2GAH1 indicates the opening and closing status of the analog switch 2-GAH1.

2. The logic control method of the principle teaching device of a multi-source multi-loop complex distribution network according to claim 1 is characterized in that: The following steps are also included: Step A, using a computer to use KingView software to establish a multi-source multi-loop complex distribution network model that is the same as the multi-source multi-loop complex distribution network three-dimensional sandbox, and displaying the multi-source multi-loop complex distribution network model through a configuration touch screen; Step B: The configuration touch screen is provided with a fault type selection button and a fault power supply transfer button; Step C: The system maintenance personnel selects the corresponding fault type through the fault type selection button, and then operates the fault power supply transfer button; Step D: The computer selects the corresponding logic control type from step 2 according to the fault type selected by the system maintenance personnel to realize the fault power supply transfer, and prompts the analog switch whose current opening and closing status is changing through the voice broadcast module, and the configuration touch screen displays it synchronously for intuitive viewing.

3. A principle teaching device for a multi-source multi-loop complex distribution network used in the logic control method according to claim 1, characterized in that: It includes a three-dimensional sand table of a multi-source and multi-loop complex distribution network, a computer for controlling the three-dimensional sand table of the multi-source and multi-loop complex distribution network, and a configuration touch screen and a voice broadcast module connected to the computer; The multi-source multi-loop complex distribution network three-dimensional sand table includes a first power supply branch, a second power supply branch and a user group. The first power supply branch includes a 35kV substation I three-dimensional sand table model, a 10kV switch station I three-dimensional sand table model, a 10kV switch station I three-dimensional sand table model, and a diesel power station I three-dimensional sand table model; the second power supply branch includes a 35kV substation II three-dimensional sand table model, a 10kV switch station II three-dimensional sand table model, a diesel power station II three-dimensional sand table model, and a 10kV switch station II three-dimensional sand table model; The user group includes a user group loop 1 and a user group loop 2, wherein the user group loop 1 includes a 1# user model, a 2# user model, a 3# user model and a 4# user model, and the user group loop 2 includes a 5# user model, a 6# user model, a 7# user model and an 8# user model, and an inter-ring contact switch is provided between the user group loop 1 and the user group loop 2.

4. The principle teaching device of multi-source multi-loop complex distribution network according to claim 3 is characterized in that: The 35kV substation I three-dimensional sandbox model is provided with 35kV busbar I-1, 35kV busbar II-1, 10kV busbar I-11, and 10kV busbar II-11. A transformer 1-BY1 is provided between the 35kV busbar I-1 and the 10kV busbar I-11, an analog switch 1-AH3 is provided between the 35kV busbar I-1 and the transformer 1-BY1, an analog switch 1-BAH1 is provided between the transformer 1-BY1 and the 10kV busbar I-11, and an analog switch 1-BAH3 and an analog switch 1-BAH4 are provided on the 10kV busbar I-11; An analog switch 1-AH1 is provided between the 35kV busbar I-1 and the upper 110kV substation I, an analog switch 1-AH5 is provided between the 35kV busbar II-1 and the 35kV busbar I-1, a transformer 1-BY2 is provided between the 35kV busbar II-1 and the 10kV busbar II-11, an analog switch 1-AH6 is provided between the 35kV busbar II-1 and the transformer 1-BY2, an analog switch 1-BAH2 is provided between the transformer 1-BY2 and the 10kV busbar II-11, and an analog switch 1-BAH5, an analog switch 1-BAH7 and an analog switch 1-BAH8 are provided on the 10kV busbar II-11; the 10kV busbar II-11 is connected to the 10kV busbar I-11 through the analog switch 1-BAH5; The 10kV switch station I three-dimensional sandbox model is provided with 10kV busbar I-21 and 10kV busbar II-21. The 10kV busbar I-21 is connected to the analog switch 1-BAH4 through the analog switch 1-GAH1; the 10kV busbar I-21 is connected to the analog switch 1-GAH3, the analog switch 1-GAH4 and the analog switch 1-GAH5; the 10kV busbar II-21 is connected to the analog switch 1-BAH7 through the analog switch 1-GAH2 in one way and to the analog switch 1-GAH13 and the analog switch 1-GAH5 in the other way. FAH3 is connected to the 10kV bus in the three-dimensional sand table model of the diesel power station I. A simulation switch 1-FAH1 is connected between the 10kV bus in the three-dimensional sand table model of the diesel power station I and the three-dimensional sand table model of the diesel power station I. The 10kV bus II-21 is also provided with simulation switches 1-GAH7, 1-GAH8, 1-GAH9, 1-GAH10 and 1-GAH11; the 10kV bus II-21 is connected to the 10kV bus I-21 through the simulation switch 1-GAH7; The 10kV switchgear I three-dimensional sandbox model is provided with 10kV busbar I-31 and 10kV busbar II-31. The 10kV busbar I-31 is connected with analog switch 1-GAH5 through analog switch 1-KAH1; the 10kV busbar I-31 is provided with analog switch 1-KAH3 and analog switch 1-KAH4; the 10kV busbar II-31 is connected with analog switch 1-GAH8 through analog switch 1-KAH2; the 10kV busbar II-31 is provided with analog switch 1-KAH6, analog switch 1-KAH7, analog switch 1-KAH8, analog switch 1-KAH9 and analog switch 1-KAH10.

5. The principle teaching device of multi-source multi-loop complex distribution network according to claim 4, characterized in that: The 35kV substation II three-dimensional sandbox model is provided with 35kV busbar I-2, 35kV busbar II-2, 10kV busbar I-12, and 10kV busbar II-12. A transformer 2-BY1 is provided between the 35kV busbar I-2 and the 10kV busbar I-12. An analog switch 2-AH3 is provided between the 35kV busbar I-2 and the transformer 2-BY1. An analog switch 2-BAH1 is provided between the transformer 2-BY1 and the 10kV busbar I-12. The 10kV busbar I-12 is provided with analog switches 2-BAH3 and 2-BAH4. An analog switch 2-AH1 is provided between the 35kV busbar I-2 and the upper 110kV substation II, an analog switch 2-AH5 is provided between the 35kV busbar II-2 and the 35kV busbar I-2, a transformer 2-BY2 ​​is provided between the 35kV busbar II-2 and the 10kV busbar II-12, an analog switch 2-AH6 is provided between the 35kV busbar II-2 and the transformer 2-BY2, an analog switch 2-BAH2 is provided between the transformer 2-BY2 ​​and the 10kV busbar II-12, and an analog switch 2-BAH5, an analog switch 2-BAH7 and an analog switch 2-BAH8 are provided on the 10kV busbar II-12; the 10kV busbar II-12 is connected to the 10kV busbar I-12 through the analog switch 2-BAH5; The 10kV switch station II three-dimensional sandbox model is provided with 10kV busbar I-22 and 10kV busbar II-22. The 10kV busbar I-22 is connected to the analog switch 2-BAH4 through the analog switch 2-GAH1; the 10kV busbar I-22 is connected to the analog switch 2-GAH3, the analog switch 2-GAH4 and the analog switch 2-GAH5; the 10kV busbar II-22 is connected to the analog switch 2-BAH7 through the analog switch 2-GAH2 in one way and to the analog switch 2-GAH13 and the analog switch 2-GAH5 in the other way. FAH3 is connected to the 10kV bus in the three-dimensional sand table model of the diesel power station II; a simulation switch 2-FAH1 is connected between the 10kV bus in the three-dimensional sand table model of the diesel power station II and the three-dimensional sand table model of the diesel power station II, and the 10kV bus II-22 is also provided with simulation switches 2-GAH7, 2-GAH8, 2-GAH9, 2-GAH10 and 2-GAH11; the 10kV bus II-22 is connected to the 10kV bus I-22 through the simulation switch 2-GAH7; The 10kV switchgear II three-dimensional sandbox model is provided with 10kV busbar I-32 and 10kV busbar II-32. The 10kV busbar I-32 is connected to the analog switch 2-GAH5 through the analog switch 2-KAH1; the 10kV busbar I-32 is provided with analog switch 2-KAH3 and analog switch 2-KAH4; the 10kV busbar II-32 is connected to the analog switch 2-GAH8 through the analog switch 2-KAH2; the 10kV busbar II-32 is provided with analog switch 2-KAH6, analog switch 2-KAH7, analog switch 2-KAH8, analog switch 2-KAH9 and analog switch 2-KAH10.

6. The principle teaching device of multi-source multi-loop complex distribution network according to claim 5, characterized in that: The 1# user model is provided with a 10kV bus 1, a transformer BYQ1 and a 1# load, the 2# user model is provided with a 10kV bus 2, a transformer BYQ2 and a 2# load, the 3# user model is provided with a 10kV bus 3, a transformer BYQ3 and a 3# load, and the 4# user model is provided with a 10kV bus 4, a transformer BYQ4 and a 4# load; The 10kV bus 1 is provided with an analog switch 1-YAH1 and an analog switch 1-YAH4, an analog switch YAH11 is connected between the 10kV bus 1 and the transformer BYQ1, and the output of the transformer BYQ1 is connected to the 1# load; the 10kV bus 2 is provided with an analog switch 2-YAH1 and an analog switch 2-YAH5, an analog switch YAH12 is connected between the 10kV bus 2 and the transformer BYQ2, and the output of the transformer BYQ2 is connected to the 2# load; the 10kV bus 3 is provided with an analog switch 3-YAH1 and an analog switch 3-YAH4, and an analog switch YAH1 is connected between the 10kV bus 3 and the transformer BYQ3 3. The output of the transformer BYQ3 is connected to the 3# load; the 10kV bus 4 is provided with an analog switch 4-YAH1 and an analog switch 4-YAH4, an analog switch YAH14 is connected between the 10kV bus 4 and the transformer BYQ4, and the output of the transformer BYQ4 is connected to the 4# load; the analog switch 1-YAH1 is connected to the analog switch 1-KAH9, the analog switch 1-YAH4 is connected to the analog switch 2-YAH1, the analog switch 2-YAH5 is connected to the analog switch 3-YAH1, the analog switch 3-YAH4 is connected to the analog switch 4-YAH1, and the analog switch 4-YAH4 is connected to the analog switch 2-KAH3.

7. A principle teaching device for a multi-source multi-loop complex distribution network according to claim 6, characterized in that: The 5# user model is provided with a 10kV bus 5, a transformer BYQ5 and a 5# load, the 6# user model is provided with a 10kV bus 6, a transformer BYQ6 and a 6# load, the 7# user model is provided with a 10kV bus 7, a transformer BYQ7 and a 7# load, and the 8# user model is provided with a 10kV bus 8, a transformer BYQ8 and an 8# load; The 10kV bus 5 is provided with an analog switch 5-YAH1 and an analog switch 5-YAH4, an analog switch YAH15 is connected between the 10kV bus 5 and the transformer BYQ5, and the output of the transformer BYQ5 is connected to the 5# load; the 10kV bus 6 is provided with an analog switch 6-YAH1 and an analog switch 6-YAH4, an analog switch YAH16 is connected between the 10kV bus 6 and the transformer BYQ6, and the output of the transformer BYQ6 is connected to the 6# load; the 10kV bus 7 is provided with an analog switch 7-YAH1 and an analog switch 7-YAH5, and an analog switch YAH1 is connected between the 10kV bus 7 and the transformer BYQ7 7, the output of the transformer BYQ7 is connected to the 7# load; the 10kV bus 8 is provided with an analog switch 8-YAH1 and an analog switch 8-YAH4, the analog switch YAH18 is connected between the 10kV bus 8 and the transformer BYQ8, and the output of the transformer BYQ8 is connected to the 8# load; the analog switch 5-YAH1 is connected to the analog switch 1-KAH3, the analog switch 5-YAH4 is connected to the analog switch 6-YAH1, the analog switch 6-YAH4 is connected to the analog switch 7-YAH1, the analog switch 7-YAH5 is connected to the analog switch 8-YAH1, and the analog switch 8-YAH4 is connected to the analog switch 2-KAH9; The inter-ring contact switch includes an analog switch 2-YAH4 arranged on the 10kV bus 2 and an analog switch 7-YAH4 arranged on the 10kV bus 7, and the analog switch 2-YAH4 is connected to the analog switch 7-YAH4.

8. A principle teaching device for a multi-source multi-loop complex distribution network according to claim 7, characterized in that: The analog switch uses a square red indicator light. When the analog switch is closed, the computer controls the square red indicator light to light up; when the analog switch is opened, the computer controls the square red indicator light to turn off. The 35kV busbar is simulated by a green luminous line with a diameter of 2.3mm. When the 35kV busbar is powered on, the computer controls the green luminous line to light up; when the 35kV busbar is powered off, the computer controls the green luminous line to turn off. The 10kV busbar is simulated by a yellow luminous line with a diameter of 2.0mm. When the 10kV busbar is energized, the computer controls the yellow luminous line to light up; when the 10kV busbar is de-energized, the computer controls the yellow luminous line to turn off. The simulated switches are connected through a 35kV power supply line or a 10kV power supply line. The 35kV power supply line is simulated by a blue luminous line with a diameter of 2.0mm, and the 10kV power supply line is simulated by a blue luminous line with a diameter of 1.3mm. The computer controls the lighting and extinguishing of the blue luminous line with a diameter of 2.0mm and the blue luminous line with a diameter of 1.3mm to correspond to the conduction and cutoff of the 35kV power supply line and the 10kV power supply line respectively. The 1# to 8# loads are simulated by square white indicator lights, and the computer controls the lighting and extinguishing of the square white indicator lights to correspond to the power on and off of the simulated user loads.

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