A multi-channel 485 area networking and fault simulation module and system

Abstract

The present invention relates to the field of electric power operation and maintenance training technology, and in particular to a multi-channel 485 substation networking and fault simulation module and system. The present invention discloses a multi-channel 485 substation networking and fault simulation module, comprising: 1 ZX conversion terminal, (2M+2) 8-pin signal relays, for connecting M power equipment equipped on the power panel to the 485 bus. The present invention can connect M power equipment equipped on the power panel to the 485 bus, thereby enabling 485 networking communication between various simulation training components. The present invention simulates a variety of line connection states of the simulation training components by adjusting the multi-channel 485 substation networking and fault simulation modules, thereby avoiding manual wiring; the present invention has rich simulated fault types and can be disconnected from the 485 bus at any time to avoid affecting the bus. The present invention solves the problem that the existing simulation training device cannot achieve networking and requires manual wiring.

Description

Technical Field

[0001] The present invention relates to the field of power operation and maintenance training technology, and more specifically to: 1. A multi-channel 485 substation networking and fault simulation module; 2. A multi-channel 485 substation networking and fault simulation system. Background Art

[0002] Current power simulation training devices generally use modular design to simulate scenarios with various field equipment combinations.

[0003] like Figure 1 As shown, existing simulation training devices consist of several identically structured simulation training components. Each simulation training component includes several panels (typically six), each equipped with several electrical devices (typically up to six)—such as simulated energy meters and simulated data acquisition devices. The panels and components are independent of each other. While this approach is simple, it also prevents networking of the simulation training components. Furthermore, existing simulation training devices simulate 485 wiring failures through manual wiring. This means that each trainee must perform a complete restoration and rewiring operation. This is too visual, making the training less effective.

[0004] Therefore, the inventors considered networking the simulation training components and designed a multi-channel 485 substation networking and fault simulation module, which can simulate the scenarios of normal connection, disconnection, reverse connection, and short circuit of 485, and can disconnect the faulty power equipment from the 485 bus when simulating a fault. Summary of the Invention

[0005] Based on this, it is necessary to provide a multi-channel 485 area networking and fault simulation module and system to address the problem that the existing simulation training device cannot be networked and requires manual wiring.

[0006] The present invention is achieved by adopting the following technical solutions:

[0007] In a first aspect, the present invention discloses a multi-channel 485 area networking and fault simulation module for connecting M power devices equipped on a power panel to a 485 bus.

[0008] Multi-channel 485 area networking and fault simulation module includes: 1 ZX conversion terminal - P1, (2M+2) 8-pin signal relays - L1~L M 、X7、K8~K M+7 、Y 14 .

[0009] P1 is used to separate the 485 bus into two connection terminals JC_485_A and JC_485_B.

[0010] L1~L MConnected to M power equipment via 485 protocol lines one by one, used to control the circuit breaker fault simulation of M power equipment. M+7 With L1~L M One-to-one connection, used to control the reverse connection fault simulation of M power devices. 14 With K8~K M+7 Connection, used to control the short circuit fault simulation of M power equipment. X7 and JC_485_A, JC_485_B, Y 14 Connection, used to control whether M power devices are connected to the 485 bus.

[0011] This multi-channel 485 area networking and fault simulation module implements the method or process according to the embodiment of the present disclosure.

[0012] In a second aspect, the present invention discloses a multi-channel 485 area networking and fault simulation system, including: a 485 bus and several simulation training components.

[0013] Among them, a single simulation training component includes: several power panels, and the multi-channel 485 substation networking and fault simulation module disclosed in the first aspect.

[0014] Each power panel is equipped with M power equipment. The number of multi-channel 485 area networking and fault simulation modules is the same as the number of power panels, and they are set up one-to-one.

[0015] This multi-channel 485 area networking and fault simulation system implements the method or process according to the embodiment of the present disclosure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention designs a multi-channel 485 area networking and fault simulation module, which can connect M power equipment equipped on the power panel to the 485 bus, and then realize the 485 networking communication between various simulation training components.

[0018] 2. The present invention simulates various line connection states of the simulation training component by adjusting the multi-channel 485 area networking and fault simulation module - 485 normal connection, 485 open circuit, 485 reverse connection, 485 short circuit, avoiding manual wiring; the present invention simulates rich fault types and can be disconnected from the 485 bus at any time to avoid affecting the bus. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural diagram of an existing simulation training device in the background technology;

[0021] Figure 2 This is a structural diagram of the multi-channel 485 area networking and fault simulation system provided by the present invention;

[0022] Figure 3 for Figure 2 Circuit diagram of any multi-channel 485 area networking and fault simulation module. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component. When a component is considered to be "fixed to" another component, it may be directly fixed to the other component or there may be a central component.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Example

[0027] See Figure 2 , Figure 2 The structure diagram of the multi-channel 485 area network and fault simulation system proposed in this invention is shown, which includes: 485 bus and several simulation training components. It should be noted that the number of simulation training components can be selected according to actual conditions. Figure 2 The case of N simulation training components is shown in .

[0028] The structures of several simulation training components are the same, so for a single simulation training component, it includes: several power panels, multiple 485 substation networks and fault simulation modules.

[0029] Each power panel is equipped with M power devices. It should be noted that the power devices are provided with 485_A and 485_B terminals for 485 connection.

[0030] It should be noted that the number of power panels and power equipment can be selected according to actual conditions. Figure 2 The figure shows a situation where 6 power panels are set up and M is 6.

[0031] The number of multi-channel 485 area networking and fault simulation modules is the same as that of the power panel, and they are set one-to-one: the multi-channel 485 area networking and fault simulation modules are used to connect the M power devices equipped on the power panel to the 485 bus.

[0032] See Figure 3 , showing the circuit diagram of any multi-channel 485 area network and fault simulation module, including: 1 ZX conversion terminal (i.e. Figure 3 P1 in), (2M+2) 8-pin signal relays (i.e. Figure 3 L1~L M 、X7、K8~K M+7 、Y 14 ); Among them, (2M+2) 8-pin signal relays cooperate with each other.

[0033] The following are explained one by one:

[0034] 101. P1 is used to separate the 485 bus into two connection terminals JC_485_A and JC_485_B.

[0035] Specifically, such as Figure 3 As shown, pin 1 of P1 is connected to JC_485_A, pin 2 is connected to JC_485_B, and pin 3 is connected to the 485 bus.

[0036] 102, L1~L M It is connected to M power devices one by one through 485 protocol lines and is used to control the circuit breaker fault simulation of M power devices.

[0037] like Figure 3 As shown, L m Pin 1 is connected to the working power supply VCH (used to provide 5V working voltage), and pin 2 is connected to the control terminal A m, pin 3 is connected to the control signal KConA m , pins 4 and 5 are left floating, and pin 6 is connected to the control signal KConB m , pin 7 is connected to control terminal B m , pin 8 is connected to the control signal ctr m ;m∈[1,M].

[0038] Among them, A m Connect the 485_A terminal of the mth power device, B m Connect the 485_B terminal of the mth power device.

[0039] ctr m As L m The control signal, its level is controllable - high and low levels correspond to L m Different working states.

[0040] Specifically:

[0041] ctr m When it is high, L m Pin 3 of the L m Pin 2, L m Connect pin 6 to L m Pin 7 of the m 、KConA m Connect, B m 、KConB m Connected.

[0042] ctr m When it is low, L m Pin 3 of the L m Pin 4, L m Connect pin 6 to L m Pin 5 of the m 、KConA m Disconnect, KConA m Turn to suspended, B m 、KConB m Disconnect, KConB m Turn to suspended.

[0043] In this embodiment, ctr m The default state is high level, and the relevant circuit design can be used: ctr m Connect LED D m The output terminal, D m The input terminal is connected through the resistor R m Connect VCH, so that VCH will ctr m Confirmed to be high level.m The level control can be achieved by connecting to an MCU (not shown) - the MCU will ctr m The level is pulled low.

[0044] 103, K8~K M+7 With L1~L M One-to-one connection is used to control the reverse connection fault simulation of M power devices.

[0045] like Figure 3 As shown, K m+7 Pin 1 is connected to VCH (used to provide 5V working voltage), pin 2 is connected to control signal ConnectA, and pin 3 is connected to KConA m , pin 4 is connected to the control signal ConnectB, pin 5 is connected to ConnectA, and pin 6 is connected to KConB m , pin 7 is connected to ConnectB, and pin 8 is connected to the control signal ctr m+7 .

[0046] ctr m+7 As K m+7 The control signal, its level is controllable - high and low levels correspond to K m+7 Different working states.

[0047] Specifically:

[0048] ctr m+7 When it is high, K m+7 Connect pin 3 of K m+7 Pin 2, K m+7 Connect pin 6 of K m+7 Pin 7; that is, at this time ConnectA, KConA m ConnectB, KConB m Connected.

[0049] ctr m+7 When it is low, K m+7 Connect pin 3 of K m+7 Pin 4, K m+7 Connect pin 6 of K m+7 That is, at this time ConnectB, KConA m Connect A, KCon B m Connected.

[0050] In this embodiment, ctr m+7 The default state is high level, and the relevant circuit design can be used: ctr m+7 Connect LED Dm+7 The output terminal, D m+7 The input terminal is connected through the resistor R m+7 Connect VCH, so that VCH will ctr m+7 Confirmed to be high level. m+7 The level control can be achieved by connecting to an MCU (not shown) - the MCU will ctr m+7 The level is pulled low.

[0051] In addition, in order to avoid K m+7 To prevent malfunction, capacitor C can be added. m+7 Filtering: VCH passes through capacitor C m+7 Ground GND.

[0052] 104. Y 14 With K8~K M+7 Connection, used to control short-circuit fault simulation of M power devices.

[0053] like Figure 3 As shown, Y 14 Pin 1 is connected to VCH (used to provide 5V working voltage), pin 2 is connected to control signal AA, pin 3 is connected to ConnectA, pin 4 is connected to control signal BB, pin 5 is connected to BB, pin 6 is connected to ConnectB, pin 7 is connected to BB, and pin 8 is connected to control signal ctr 14 .

[0054] ctr 14 As Y 14 The control signal, its level is controllable - high and low levels correspond to Y 14 Different working states.

[0055] Specifically:

[0056] ctr 14 When it is high, Y 14 Connect pin 3 of Y 14 Pin 2, Y 14 Connect pin 6 to Y 14 That is, at this time, ConnectA and AA are connected, and ConnectB and BB are connected.

[0057] ctr 14 When it is low, Y 14 Connect pin 3 of Y 14 Pin 4, Y 14 Connect pin 6 to Y 14 That is, at this time, ConnectA and BB are connected, and ConnectB and BB are connected.

[0058] In this embodiment, ctr 14 The default state is high level, and the relevant circuit design can be used: ctr 14 Connect LED D 14 The output terminal, D 14 The input terminal is connected through the resistor R 14 Connect VCH, so that VCH will ctr 14 Confirmed to be high level. 14 The level control can be achieved by connecting to an MCU (not shown) - the MCU will ctr 14 The level is pulled low.

[0059] In addition, in order to avoid Y 14 In case of malfunction, capacitor C7 can be added for filtering: VCH is connected to ground GND through capacitor C7.

[0060] 105, X7 and JC_485_A, JC_485_B, Y 14 Connection, used to control whether M power devices are connected to the 485 bus.

[0061] like Figure 3 As shown, pin 1 of X7 is connected to VCH (used to provide 5V working voltage), pin 2 is floating, pin 3 is connected to JC_485_A, pin 4 is connected to AA, pin 5 is connected to BB, pin 6 is connected to JC_485_B, pin 7 is floating, and pin 8 is connected to the control signal ctr7;

[0062] ctr7 is the control signal of X7, and its level is controllable - high and low levels correspond to different working states of X7.

[0063] Specifically:

[0064] When ctr7 is high, pin 3 of X7 is connected to pin 2 of L7, and pin 6 of X7 is connected to pin 7 of X7; that is, at this time JC_485_A is floating and JC_485_B is floating.

[0065] When ctr7 is at a low level, pin 3 of X7 is connected to pin 4 of X7, and pin 6 of X7 is connected to pin 5 of X7; in other words, at this time, JC_485_A and AA are connected, and JC_485_B and BB are connected.

[0066] In this embodiment, ctr7 is at a high level by default. A related circuit design can be used: ctr7 is connected to the output of light-emitting diode D7, and the input of D7 is connected to VCH through resistor R7. VCH then confirms that ctr7 is at a high level. ctr7 can be connected to an MCU (not shown) to achieve level control—the MCU pulls the level of ctr7 down when needed.

[0067] The multi-channel 485 area networking and fault simulation module based on the above structure can realize a variety of line connection states - 485 normal connection, 485 open circuit, 485 reverse connection, and 485 short circuit.

[0068] The following uses a simulation training component as an example to illustrate:

[0069] By default, ctr m 、ctr7、ctr m+7 、ctr 14 Both are high level.

[0070] In this way, when ctr7 is high, JC_485_A and JC_485_B are both suspended, and M power devices are not connected to the 485 bus, which makes it convenient to disassemble and assemble the power panel or use it independently.

[0071] If you need to connect the power equipment to the 485 bus, set ctr7 to low level, connect JC_485_A to AA, and connect JC_485_B to BB. 14 High level, AA is connected to ConnectA, BB is connected to ConnectB; ctr m 、ctr m+7 Both are high level, ConnectA and KConA m ConnectB and KConB m Connect, KConA m With A m Connect, KConB m With B m If connected, the mth power device is connected to the 495 bus.

[0072] If a short circuit fault simulation is performed, ctr 14 Set to low level, ConnectA is connected to BB, ConnectB is connected to BB, which is equivalent to M power devices having a 485 short circuit; at the same time, ConnectA is disconnected from AA, Y 14 Disconnect from X7 to disconnect M power devices from the 485 bus.

[0073] If a circuit breaker fault simulation is performed, ctr m Set to low level, KConA mWith A m Disconnect and turn to floating, KConB m With B m Disconnecting and turning it to suspended state is equivalent to breaking the circuit of the mth power equipment.

[0074] If reverse fault simulation is performed, keep ctr m is high, ctr m+7 Set to low level, ConnectB and KConA m Connect A and KCon B m Connect, KConA m With A m Connect, KConB m With B m If it is connected, it is equivalent to the mth power device having 485 reverse connection.

[0075] Combined with the above specific configuration, multiple line connection states are realized - 485 normal connection, 485 open circuit, 485 reverse connection, 485 short circuit, and manual wiring is avoided.

[0076] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A multi-channel 485 area networking and fault simulation module, characterized in that: It is used to connect M power devices equipped on the power panel to the 485 bus; The multi-channel 485 area networking and fault simulation module includes: 1 ZX conversion terminal P1, which is used to separate the 485 bus into two connection terminals JC_485_A and JC_485_B; as well as (2M+2) 8-pin signal relays L1~L M 、X7、K8~K M+7 、Y 14 , which cooperate with each other; Among them, L1~L M Connected to M power devices via 485 protocol lines in a one-to-one correspondence, used to control the circuit breaker fault simulation of M power devices; K8~K M+7 With L1~L M One-to-one connection, used to control reverse connection fault simulation of M power devices; Y 14 With K8~K M+7 Connection, used to control short circuit fault simulation of M power devices; X7 and JC_485_A, JC_485_B, Y 14 Connection, used to control whether M power devices are connected to the 485 bus.

2. The multi-channel 485 area networking and fault simulation module according to claim 1 is characterized in that: L m Pin 1 is connected to the working power supply VCH, and pin 2 is connected to the control terminal A m , pin 3 is connected to the control signal KConA m , pins 4 and 5 are left floating, and pin 6 is connected to the control signal KConB m , pin 7 is connected to control terminal B m , pin 8 is connected to the control signal ctr m ;m∈[1,M]; Among them, A m Connect the 485_A terminal of the mth power device, B m Connect to the 485_B terminal of the mth power device; Among them, ctr m When it is high, L m Pin 3 of the L m Pin 2, L m Connect pin 6 to L m Pin 7 of ctr m When it is low, L m Pin 3 of the L m Pin 4, L m Connect pin 6 to L m Pin 5 of the .

3. The multi-channel 485 area networking and fault simulation module according to claim 2 is characterized in that: K m+7 Pin 1 is connected to VCH, pin 2 is connected to control signal ConnectA, and pin 3 is connected to KConA m , pin 4 is connected to the control signal ConnectB, pin 5 is connected to ConnectA, and pin 6 is connected to KConB m , pin 7 is connected to ConnectB, and pin 8 is connected to the control signal ctr m+7 ; Among them, ctr m+7 When it is high, K m+7 Connect pin 3 of K m+7 Pin 2, K m+7 Connect pin 6 of K m+7 Pin 7 of ctr m+7 When it is low, K m+7 Connect pin 3 of K m+7 Pin 4, K m+7 Connect pin 6 of K m+7 Pin 5 of the .

4. The multi-channel 485 area networking and fault simulation module according to claim 3 is characterized in that: Y 14 Pin 1 is connected to VCH, pin 2 is connected to control signal AA, pin 3 is connected to ConnectA, pin 4 is connected to control signal BB, pin 5 is connected to BB, pin 6 is connected to ConnectB, pin 7 is connected to BB, and pin 8 is connected to control signal ctr 14 ; Among them, ctr 14 When it is high, Y 14 Connect pin 3 of Y 14 Pin 2, Y 14 Connect pin 6 to Y 14 Pin 7 of ctr 14 When it is low, Y 14 Connect pin 3 of Y 14 Pin 4, Y 14 Connect pin 6 to Y 14 Pin 5 of the .

5. The multi-channel 485 area networking and fault simulation module according to claim 4 is characterized in that: Pin 1 of X7 is connected to VCH, pin 2 is left floating, pin 3 is connected to JC_485_A, pin 4 is connected to AA, pin 5 is connected to BB, pin 6 is connected to JC_485_B, pin 7 is left floating, and pin 8 is connected to the control signal ctr7; Among them, when ctr7 is high, pin 3 of X7 is connected to pin 2 of L7, and pin 6 of X7 is connected to pin 7 of X7; When ctr7 is at a low level, pin 3 of X7 is connected to pin 4 of X7, and pin 6 of X7 is connected to pin 5 of X7.

6. The multi-channel 485 area networking and fault simulation module according to claim 5 is characterized in that: ctr m Connect LED D m The output terminal, D m The input terminal is connected through the resistor R m Connect VCH; or / and, ctr m+7 Connect LED D m+7 The output terminal, D m+7 The input terminal is connected through the resistor R m+7 Connect VCH; or / and, ctr 14 Connect LED D 14 The output terminal, D 14 The input terminal is connected through the resistor R 14 Connect VCH; Or / and, ctr7 is connected to the output end of the light emitting diode D7, and the input end of D7 is connected to VCH through the resistor R7.

7. The multi-channel 485 area networking and fault simulation module according to claim 5 is characterized in that: VCH passes through capacitor C m+7 Ground GND; Alternatively or in combination, VCH is connected to ground GND via capacitor C7.

8. The multi-channel 485 area networking and fault simulation module according to claim 5 is characterized in that: When ctr7 is high, JC_485_A and JC_485_B are both suspended, and M power devices are not connected to the 485 bus; Ctr7 is low level, ctr 14 When the level is high, JC_485_A is connected to AA, JC_485_B is connected to BB, AA is connected to ConnectA, and BB is connected to ConnectB. If ctr m 、ctr m+7 Both are high level, ConnectA and KConA m Connect, ConnectB and KConB m Connect, KConA m With A m Connect, KConB m With B m If connected, the mth power device is connected to the 495 bus.

9. The multi-channel 485 area networking and fault simulation module according to claim 8, characterized in that: When short circuit fault simulation is performed, ctr 14 = Low level, ConnectA is connected to BB, ConnectB is connected to BB, which is equivalent to M power devices having 485 short circuit; at the same time, ConnectA is disconnected from AA, Y 14 Disconnect from X7, so that M power devices are disconnected from the 485 bus; When simulating a circuit breaker fault, ctr m is low level, KConA m With A m Disconnect and turn to floating, KConB m With B m If it is disconnected and turned to suspended, it is equivalent to the mth power equipment being disconnected; When performing reverse connection fault simulation, ctr m High level, ctr m+7 is low level, ConnectB and KConA m Connect A and KCon B m Connect, KConA m With A m Connect, KConB m With B m If it is connected, it is equivalent to the mth power device having 485 reverse connection.

10. A multi-channel 485 area networking and fault simulation system, characterized in that: include: 485 bus, several simulation training components; Among them, the single simulation training components include: Several power panels; each power panel is equipped with M power devices; as well as The multi-channel 485-area networking and fault simulation module according to any one of claims 1 to 9; the multi-channel 485-area networking and fault simulation modules are the same in number as the power panels and are arranged in a one-to-one correspondence.

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