Isolating switch reverse bus operation system and interlocking loop thereof
By setting a follow-up switch on the interlocking circuit, the switch state is controlled according to the inverted mother operation state of the mother line interval, the non-operating interval isolating switch secondary circuit is solved when multiple inlet and outlet line intervals share the same auxiliary switch contact. , ensuring safe operation and reducing the equipment's demand for the number of auxiliary switches.
Patent Information
- Application Number
- CN202310751785.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-25
- Publication Date
- 2024-12-27
AI Technical Summary
When multiple inlet and outlet line intervals share the auxiliary switch contacts of the same sub-male interval, there is a problem of serial power in the secondary circuit of the non-operating interval isolating switch, resulting in safety risks.
Set up a follower switch on the interlocking circuit. Only when the inverting mother operation state of the mother line interval is inverting mother operation, the switching state of the follower switch is closed, otherwise it will be disconnected, ensuring that the interlocking circuit only in the operation interval is only in the interlocking circuit. Power on to prevent current from flowing through the cable to the secondary circuit that is not operated.
It effectively avoids the serial power problem of the secondary circuit of the non-operating partition spacer, ensures the safety of the inverted operation of the isolating switch, reduces the equipment's demand for the number of auxiliary switches, and reduces the structural complexity.
Smart Images
Figure CN119208056A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of electrical control, and in particular relates to an isolating switch reverse mother operating system and an interlocking circuit thereof. Background Art
[0002] The disconnector reverse operation interlock is to connect the bus tie interval circuit breaker and the auxiliary switch of the disconnector in series to the interlocking circuit of the incoming and outgoing line intervals. The structure of the existing disconnector reverse operation system is as follows: Figure 1 As shown, the interlocking circuit in this system is as follows Figure 2 When there are many incoming and outgoing line intervals, the disconnector reverse operation interlock requires more auxiliary switches for the bus-coupled interval circuit breaker and disconnector, that is, each incoming and outgoing line interval needs to be connected to the interlocking circuit, and the interlocking circuit requires auxiliary switches for the bus-coupled interval circuit breaker and disconnector. However, due to the limited number of auxiliary switches of circuit breakers / disconnectors of primary equipment manufacturers, the number of auxiliary switches is difficult to meet the demand. Therefore, when the number of auxiliary switches of circuit breakers / disconnectors cannot meet the demand, primary equipment manufacturers usually choose multiple incoming and outgoing line intervals to share the auxiliary switch contacts of the same bus-coupled interval, that is, Figure 2 The busbar auxiliary switch contacts in the Figure 2 In the interlocking circuit of the compartment, it is also connected to the interlocking circuit of other compartments through cables. In this way, there will be a problem of series electricity in the secondary circuit of the non-operating compartment disconnector in the two compartments that share the auxiliary switch contacts of the bus-coupled compartment: Assuming that compartment A and compartment B share the auxiliary switch contacts of the same bus-coupled compartment primary equipment, when compartment A is operated, the interlocking circuit of compartment A is energized, and the current will pass through the bus-coupled compartment auxiliary switch contacts shared by the interlocking circuits of compartment A and compartment B, and enter compartment B along the cable. The secondary circuit of compartment B is energized without knowing it, which poses a certain safety risk. Summary of the invention
[0003] The object of the present invention is to provide a disconnector reverse mother operating system and its interlocking circuit to solve the problem of secondary circuit series electricity in non-operating interval disconnectors when multiple incoming and outgoing line intervals share the auxiliary switch contacts of the same secondary mother coupling interval.
[0004] In order to solve the above technical problems, the present invention provides an interlocking circuit of a disconnector reverse mother operating system, including an auxiliary switch interlocking circuit of the disconnector formed by connecting the auxiliary switch contacts of the bus coupling interval and the auxiliary switch of the disconnector in series, and the auxiliary switch interlocking circuit is also connected in series with a follower switch that changes with the reverse mother operation state of the bus coupling interval; when the reverse mother operation state of the bus coupling interval is in the process of performing a reverse mother operation, the switch state of the follower switch is a closed state, and when the reverse mother operation state of the bus coupling interval is not in the process of performing a reverse mother operation, the switch state of the follower switch is an open state.
[0005] Its beneficial effects are as follows: the present invention sets a follower switch on the interlocking circuit corresponding to the change of the reverse bus operation state of the bus coupling interval, so that the switch state of the follower switch is closed only when the reverse bus operation state is in operation, that is, only when the bus coupling interval corresponding to the interlocking circuit is the operating interval isolating switch, the interlocking circuit corresponding to the bus coupling interval is energized, and then when multiple incoming and outgoing line intervals share the auxiliary switch contacts of the same sub-bus coupling interval, even if there is an unoperated interval, because the follower switch in the interlocking circuit of the unoperated interval is not closed, the current of the operating interval interlocking circuit is prevented from flowing to the secondary circuit of the unoperated interval through the cable, and then when multiple incoming and outgoing line intervals share the auxiliary switch contacts of the same sub-bus coupling interval, the problem of series electricity in the secondary circuit of the non-operating interval isolating switch is avoided, thereby ensuring the safety of the reverse bus operation of the isolating switch.
[0006] Furthermore, the follow-up switch is a normally open contact switch of the relay arranged in parallel at the opening and closing command of the isolating switch, so that when the main-reversing operation state of the main coupling interval is in progress, the relay at the opening and closing command of the isolating switch is turned on to control the closing of the normally open contact switch.
[0007] In the present invention, the normally open contact switch of the relay arranged in parallel at the opening and closing command position of the isolating switch is used as a follow-up switch. When the opening and closing command position of the isolating switch receives an opening and closing command, the opening and closing command position of the isolating switch is turned on and then the relay is turned on, and then the normally open contact switch of the relay is closed. When the opening and closing command position of the isolating switch does not receive an opening and closing command or the opening and closing operation is completed, the opening and closing command position of the isolating switch is not turned on, and then the relay loses power, causing the normally open contact switch of the relay to be in an open state. Therefore, the switching state of the normally open contact switch of the relay changes with the reverse operation state of the main coupling interval, and when the reverse operation state of the main coupling interval is in the process of reverse operation, the switching state of the normally open contact switch is closed, and when the reverse operation state of the main coupling interval is not in the process of reverse operation, the switching state of the normally open contact switch is open. Therefore, in the present invention, the normally open contact switch of the relay arranged in parallel at the opening and closing command of the isolating switch can be used as a follow-up switch to realize that only when the main coupling interval corresponding to the interlocking circuit is the operating interval isolating switch, the interlocking circuit corresponding to the main coupling interval is energized.
[0008] Furthermore, the relay is a time relay, and the contacts of the time relay act immediately when the power is turned on, and are disconnected with a delay when the power is turned off.
[0009] The present invention takes into account that the opening and closing action of the isolating switch device requires a certain amount of time, so it is necessary to ensure that the relay contacts can be reset when the isolating switch is in place, that is, the interlocking circuit is disconnected. When the opening and closing command disappears, the relay loses power, and its contacts need to be disconnected after a certain delay, and the delay time should not be less than the time required for the opening or closing action process of the isolating switch. The time relay is an automatic control electrical appliance that uses electromagnetic principles or mechanical action principles to delay the closure or disconnection of the contacts. There can be a delay from the time when the self-attracting coil of the time relay receives a signal to the contact action, and the delay performance of the time relay can be adjusted within the designed range. Therefore, the present invention can achieve that when the input action signal is added (or removed), its output circuit needs to undergo a specified accurate time to produce a jump change (or contact action), and then meet the needs by selecting a time relay that is instantly powered on and disconnected with a power-off delay.
[0010] Furthermore, at least one follower switch is respectively provided at both ends of the bus-tie interval auxiliary switch contact.
[0011] In the present invention, at least one follower switch is respectively provided at both ends of the auxiliary switch contact of the bus tie interval, that is, at least two follower switches are provided in an interlocking circuit, so as to avoid that when there is only one follower switch, the one follower switch fails and causes the interval to remain in a closed state when the interval is a non-operating interval, and then the secondary circuit of the non-operating interval disconnector has a cross-current problem. Therefore, in the present invention, even if one switch fails and cannot be disconnected, the other switch can still be disconnected, so as to avoid the problem of cross-current in the secondary circuit of the non-operating interval disconnector.
[0012] Furthermore, the follow-up switch is only arranged on a plurality of auxiliary switch interlocking circuits whose contacts of the main coupling interval auxiliary switches are shared.
[0013] The present invention takes into account that the auxiliary switch interlocking circuit of the unshared main coupling interval auxiliary switch contacts does not have the problem of series current in the secondary circuit of the non-operating interval isolating switch, so there is no need to set a follower switch on the interlocking circuit. Therefore, in the present invention, follower switches are respectively set on multiple auxiliary switch interlocking circuits of the shared main coupling interval auxiliary switch contacts, while no follower switch is set on the auxiliary switch interlocking circuit of the unshared main coupling interval auxiliary switch contacts, thereby reducing the structural complexity of the entire isolating switch reverse mother operation system.
[0014] In order to solve the above technical problems, the present invention also provides a disconnector mother-reversing operation system, including an disconnector opening and closing command unit, a mother-reversing interval auxiliary switch contact and an auxiliary switch of the disconnector formed by connecting in series the auxiliary switch of the disconnector, the disconnector opening and closing command unit and the auxiliary switch interlocking circuit are arranged in series, and the auxiliary switch interlocking circuit is also connected in series with a follow-up switch that changes with the mother-reversing operation state of the mother-reversing interval; when the mother-reversing operation state of the mother-reversing interval is that the mother-reversing operation is in progress, the switch state of the follow-up switch is a closed state, and when the mother-reversing operation state of the mother-reversing interval is that the mother-reversing operation is not in progress, the switch state of the follow-up switch is an open state.
[0015] Its beneficial effects are as follows: the present invention sets a follower switch on the interlocking circuit corresponding to the change of the reverse bus operation state of the bus coupling interval, so that the switch state of the follower switch is closed only when the reverse bus operation state is in operation, that is, only when the bus coupling interval corresponding to the interlocking circuit is the operating interval isolating switch, the interlocking circuit corresponding to the bus coupling interval is energized, and then when multiple incoming and outgoing line intervals share the auxiliary switch contacts of the same sub-bus coupling interval, even if there is an unoperated interval, because the follower switch in the interlocking circuit of the unoperated interval is not closed, the current of the operating interval interlocking circuit is prevented from flowing to the secondary circuit of the unoperated interval through the cable, and then when multiple incoming and outgoing line intervals share the auxiliary switch contacts of the same sub-bus coupling interval, the problem of series electricity in the secondary circuit of the non-operating interval isolating switch is avoided, thereby ensuring the safety of the reverse bus operation of the isolating switch.
[0016] Furthermore, the disconnector opening and closing command unit includes a relay arranged in parallel at the disconnector opening and closing command position, and the follow-up switch is a normally open contact switch of the relay. When the main-coupling operation state of the main coupling interval is in the main-coupling operation, the relay at the disconnector opening and closing command position is turned on to control the normally open contact switch to close.
[0017] In the present invention, the normally open contact switch of the relay arranged in parallel at the opening and closing command position of the isolating switch is used as a follow-up switch. When the opening and closing command position of the isolating switch receives an opening and closing command, the opening and closing command position of the isolating switch is turned on and then the relay is turned on, and then the normally open contact switch of the relay is closed. When the opening and closing command position of the isolating switch does not receive an opening and closing command or the opening and closing operation is completed, the opening and closing command position of the isolating switch is not turned on, and then the relay loses power, causing the normally open contact switch of the relay to be in an open state. Therefore, the switching state of the normally open contact switch of the relay changes with the reverse operation state of the main coupling interval, and when the reverse operation state of the main coupling interval is in the process of reverse operation, the switching state of the normally open contact switch is closed, and when the reverse operation state of the main coupling interval is not in the process of reverse operation, the switching state of the normally open contact switch is open. Therefore, in the present invention, the normally open contact switch of the relay arranged in parallel at the opening and closing command of the isolating switch can be used as a follow-up switch to realize that only when the main coupling interval corresponding to the interlocking circuit is the operating interval isolating switch, the interlocking circuit corresponding to the main coupling interval is energized.
[0018] Furthermore, the relay is a time relay, and the contacts of the time relay act immediately when the power is turned on, and are disconnected with a delay when the power is turned off.
[0019] The present invention takes into account that the opening and closing action of the isolating switch device requires a certain amount of time, so it is necessary to ensure that the relay contacts can be reset when the isolating switch is in place, that is, the interlocking circuit is disconnected. When the opening and closing command disappears, the relay loses power, and its contacts need to be disconnected after a certain delay, and the delay time should not be less than the time required for the opening or closing action process of the isolating switch. The time relay is an automatic control electrical appliance that uses electromagnetic principles or mechanical action principles to delay the closure or disconnection of the contacts. There can be a delay from the time when the self-attracting coil of the time relay receives a signal to the contact action, and the delay performance of the time relay can be adjusted within the designed range. Therefore, the present invention can achieve that when the input action signal is added (or removed), its output circuit needs to undergo a specified accurate time to produce a jump change (or contact action), and then meet the needs by selecting a time relay that is instantly powered on and disconnected with a power-off delay.
[0020] Furthermore, at least one follower switch is respectively provided at both ends of the bus-tie interval auxiliary switch contact.
[0021] In the present invention, at least one follower switch is respectively provided at both ends of the auxiliary switch contact of the bus tie interval, that is, at least two follower switches are provided in an interlocking circuit, so as to avoid that when there is only one follower switch, the one follower switch fails and causes the interval to remain in a closed state when the interval is a non-operating interval, and then the secondary circuit of the non-operating interval disconnector has a cross-current problem. Therefore, in the present invention, even if one switch fails and cannot be disconnected, the other switch can still be disconnected, so as to avoid the problem of cross-current in the secondary circuit of the non-operating interval disconnector.
[0022] Furthermore, the follow-up switch is only arranged on a plurality of auxiliary switch interlocking circuits whose contacts of the main coupling interval auxiliary switches are shared.
[0023] The present invention takes into account that the auxiliary switch interlocking circuit of the unshared main coupling interval auxiliary switch contacts does not have the problem of series current in the secondary circuit of the non-operating interval isolating switch, so there is no need to set a follower switch on the interlocking circuit. Therefore, in the present invention, follower switches are respectively set on multiple auxiliary switch interlocking circuits of the shared main coupling interval auxiliary switch contacts, while no follower switch is set on the auxiliary switch interlocking circuit of the unshared main coupling interval auxiliary switch contacts, thereby reducing the structural complexity of the entire isolating switch reverse mother operation system. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is the original schematic diagram of the disconnector reverse mother operating system;
[0025] Figure 2 This is a schematic diagram of the interlocking circuit of the original disconnector reverse mother operating system;
[0026] Figure 3 It is a schematic diagram of the disconnector inverted mother operating system of the present invention;
[0027] Figure 4 It is a schematic diagram of the interlocking circuit of the disconnector reverse mother operating system of the present invention. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
[0029] Isolating switch reverse mother operating system embodiment:
[0030] In order to avoid the problem of series electricity in the secondary circuit of the non-operating interval isolating switch when multiple incoming and outgoing line intervals share the auxiliary switch contacts of the same secondary bus-coupled interval, the system of this embodiment connects a follower switch in series on the auxiliary switch interlocking circuit that changes with the reverse bus operation state of the bus-coupled interval, so that when the reverse bus operation state of the bus-coupled interval is in progress, the switch state of the follower switch is in a closed state, and when the reverse bus operation state of the bus-coupled interval is not in progress, the switch state of the follower switch is in an open state.
[0031] like Figure 3 The structure diagram of the system of this embodiment is shown. In this embodiment, a time relay is connected in parallel at the disconnector opening and closing command, and the auxiliary contacts of the time relay are connected in series before and after the "bus tie interval auxiliary switch contact" in the interlocking circuit. The contacts of the time relay should be selected to be instantaneous when powered on and delayed when powered off.
[0032] like Figure 4 The figure shows the interlocking circuit of the disconnector inverted operating system of the present embodiment. In the present embodiment, the normally open contact switch of the relay arranged in parallel at the disconnector opening and closing command is used as a follow-up switch. When the disconnector opening and closing command receives the opening and closing command, the disconnector opening and closing command is turned on and the relay is turned on, and then the normally open contact switch of the relay is closed. When the disconnector opening and closing command receives the opening and closing command or the opening and closing operation is completed, the disconnector opening and closing command is not turned on, and then the relay loses power, causing the normally open contact switch of the relay to be in an open state. Therefore, the switching state of the normally open contact switch of the relay changes with the reverse operation state of the main coupling interval, and when the reverse operation state of the main coupling interval is in the process of reversing the main operation, the switching state of the normally open contact switch is in the closed state, and when the reverse operation state of the main coupling interval is not in the process of reversing the main operation, the switching state of the normally open contact switch is in the open state. Therefore, the normally open contact switch of the relay arranged in parallel at the opening and closing command of the isolating switch is used as a follow-up switch, which can realize that the interlocking circuit corresponding to the main coupling interval is energized only when the main coupling interval corresponding to the interlocking circuit is the operating interval isolating switch.
[0033] In addition, in this embodiment, it is considered that when there is only one follower switch, the failure of the follower switch causes the interval to remain in a closed state when the interval is a non-operating interval, and thus the secondary circuit of the non-operating interval isolating switch has a cross-current problem. Therefore, in this embodiment, at least two follower switches are provided so that even if one switch fails and cannot be disconnected, the other switch can still be disconnected to avoid the problem of cross-current in the secondary circuit of the non-operating interval isolating switch.
[0034] In order to avoid the problem of series current in the secondary circuit of the non-operating interval disconnector when multiple incoming and outgoing line intervals share the auxiliary switch contacts of the same secondary bus-coupled interval, a follower switch can be set on the interlocking circuit of the entire disconnector reverse mother operation system to avoid the above-mentioned series current problem. As another embodiment, it is also possible to set a follower switch on the interlocking circuit based on the fact that there is no series current problem in the secondary circuit of the non-operating interval disconnector for the auxiliary switch interlocking circuit of the unshared bus-coupled interval auxiliary switch contacts, and therefore there is no need to set a follower switch on the interlocking circuit. Follower switches are only set on multiple auxiliary switch interlocking circuits of the shared bus-coupled interval auxiliary switch contacts, while no follower switch is set on the auxiliary switch interlocking circuit of the unshared bus-coupled interval auxiliary switch contacts, thereby reducing the structural complexity of the entire disconnector reverse mother operation system.
[0035] Based on the disconnector mother-reversing operation system of this embodiment, when a mother-reversing operation is performed on a certain interval, that is, the disconnector opening and closing handle of the interval is operated, the time relays T1 and T2 are energized, and their auxiliary contacts 1-3 and 6-8 are closed instantaneously, and the interlocking circuit generates current to form a path, thereby connecting the "mother-coupled interval auxiliary switch contact" to the interlocking circuit of the interval. Since the other intervals that share the "mother-coupled interval auxiliary switch contact" have not operated the disconnector opening and closing handle, the time relays T1 and T2 will not be energized, that is, the relay auxiliary contacts 1-3 and 6-8 in the interlocking circuits of other intervals are still in the original open state, so the current of the interlocking circuit of the operated interval is prevented from flowing through the cable to the secondary circuits of other unoperated intervals.
[0036] Since the disconnecting and closing action of the isolating switch equipment requires a certain amount of time, it is necessary to ensure that the time relay contacts can be reset when the isolating switch is in place, that is, the interlocking circuit is disconnected. When the opening and closing command disappears, the time relay loses power, and its contacts need to be disconnected after a certain delay. The delay time should not be less than the time required for the disconnecting or closing action process of the isolating switch.
[0037] The system of this embodiment connects a time relay in parallel at the opening and closing command of the isolating switch on the bus side, and the contacts of the time relay are connected in series at the head and tail of the contacts of the bus-coupled interval auxiliary switch. The contacts of the bus-coupled interval auxiliary switch are introduced into this interval only when the isolating switch of this interval is opened and closed. For the isolating switch interlocking circuits of other intervals that are not operated, the auxiliary contacts of the front and rear relays are in the disconnected state, thus avoiding the secondary circuit from being cross-connected. This avoids the risk of primary equipment manufacturers violating the "Eighteen Countermeasures of the State Grid" by using relays to expand auxiliary switches, and solves the problem of secondary circuit cross-connection when the reverse bus interlocking shares the auxiliary switch. In addition, the system of this embodiment can reduce the demand for the number of auxiliary switches of primary equipment for the reverse bus interlocking, saving resources.
[0038] Interlocking circuit implementation example of disconnector reverse mother operating system:
[0039] The interlocking circuit in this embodiment includes an auxiliary switch interlocking circuit of the isolating switch formed by connecting the auxiliary switch contacts of the main coupling interval and the auxiliary switch of the isolating switch in series. The auxiliary switch interlocking circuit is also connected in series with a follow-up switch that changes with the inverted main operation state of the main coupling interval; when the inverted main operation state of the main coupling interval is in progress, the switch state of the follow-up switch is in a closed state, and when the inverted main operation state of the main coupling interval is not in progress, the switch state of the follow-up switch is in an open state. The present invention provides a follower switch on the interlocking circuit corresponding to the change of the reverse bus operation state of the bus coupling interval, so that the switch state of the follower switch is closed only when the reverse bus operation state is in operation, that is, only when the bus coupling interval corresponding to the interlocking circuit is the operating interval isolating switch, the interlocking circuit corresponding to the bus coupling interval is energized, and then when multiple incoming and outgoing line intervals share the auxiliary switch contacts of the same sub-bus coupling interval, even if there is an unoperated interval, because the follower switch in the interlocking circuit of the unoperated interval is not closed, the current of the operating interval interlocking circuit is prevented from flowing to the secondary circuit of the unoperated interval through the cable, and then when multiple incoming and outgoing line intervals share the auxiliary switch contacts of the same sub-bus coupling interval, the problem of series electricity in the secondary circuit of the non-operating interval isolating switch is avoided, thereby ensuring the safety of the reverse bus operation of the isolating switch.
[0040] The specific interlocking circuit structure and the working principle of the interlocking circuit have been described in detail in the embodiment of the disconnector reverse mother operating system, and will not be repeated here.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.
Claims
1. An interlocking circuit of an isolating switch reverse mother operating system, comprising an auxiliary switch interlocking circuit of an isolating switch formed by connecting the auxiliary switch of the mother coupling interval in series with the auxiliary switch of the isolating switch, characterized in that: The auxiliary switch interlock circuit is also connected in series with a follower switch that changes with the reverse mother operation state of the main coupling interval; when the reverse mother operation state of the main coupling interval is in the process of performing a reverse mother operation, the switch state of the follower switch is a closed state, and when the reverse mother operation state of the main coupling interval is not in the process of performing a reverse mother operation, the switch state of the follower switch is an open state.
2. The interlocking circuit of the disconnector reverse operating system according to claim 1 is characterized in that: The follow-up switch is a normally open contact switch of the relay arranged in parallel at the disconnecting and closing command of the isolating switch. When the bus-reversing operation state of the bus-connecting interval is in progress, the relay at the disconnecting and closing command of the isolating switch is turned on to control the normally open contact switch to close.
3. The interlocking circuit of the disconnector reverse operating system according to claim 2 is characterized in that: The relay is a time relay, the contacts of which act immediately when the power is on and disconnect with a delay when the power is off.
4. The interlocking circuit of the disconnector reverse operating system according to any one of claims 1 to 3, characterized in that: At least one follow-up switch is respectively arranged at both ends of the bus-tie interval auxiliary switch contact.
5. The interlocking circuit of the disconnector reverse operating system according to any one of claims 1 to 3, characterized in that: The follow-up switch is only arranged on a plurality of auxiliary switch interlocking circuits whose contacts of the main coupling interval auxiliary switches are shared.
6. A disconnector switch reverse mother operating system, comprising an disconnector switch opening and closing command unit, a mother-tie interval auxiliary switch contact and an auxiliary switch of the disconnector switch connected in series to form an auxiliary switch interlocking circuit of the disconnector switch, wherein the disconnector switch opening and closing command unit and the auxiliary switch interlocking circuit are arranged in series, characterized in that: The auxiliary switch interlock circuit is also connected in series with a follower switch that changes with the reverse mother operation state of the main coupling interval; when the reverse mother operation state of the main coupling interval is in the process of performing a reverse mother operation, the switch state of the follower switch is a closed state, and when the reverse mother operation state of the main coupling interval is not in the process of performing a reverse mother operation, the switch state of the follower switch is an open state.
7. The disconnector inverted operating system according to claim 6, characterized in that: The disconnector opening and closing command unit includes a relay arranged in parallel at the disconnector opening and closing command position, and the follow-up switch is a normally open contact switch of the relay. When the bus-reversing operation state of the bus-connecting interval is in the process of performing the bus-reversing operation, the relay at the disconnector opening and closing command position is turned on to control the normally open contact switch to close.
8. The disconnector inverted operating system according to claim 7, characterized in that: The relay is a time relay, the contacts of which act immediately when the power is on and disconnect with a delay when the power is off.
9. The disconnector inverted mother operating system according to any one of claims 6 to 8, characterized in that: At least one follow-up switch is respectively arranged at both ends of the bus-tie interval auxiliary switch contact.
10. The disconnector inverted mother operating system according to any one of claims 6 to 8, characterized in that: The follow-up switch is only arranged on a plurality of auxiliary switch interlocking circuits whose contacts of the main coupling interval auxiliary switches are shared.