Novel starting circuit topological structure of power supply and distribution control combination

Abstract

The invention relates to a novel starting circuit topological structure of a power supply and distribution control combination, belongs to the field of power supply and distribution, and solves the problem that power accidents may be caused as software in an existing circuit suddenly crashes and cannot be forced to power off a system. The novel starting circuit topological structure comprises a normally open direct current contactor KM1, a normally closed direct current relay K1, a switch S1, a switch S1'and a switch S2. A coil of the K1 is connected in series between a power-off output port of the energy manager and the ground; a switch of the KM1 is connected in series with the first branch C1; the S2 and the S1 are connected in series on the second branch C2; one end of the first branch C1 and one end of the second branch C2 are both connected with the positive electrode of the power supply; the other end of the first branch C1 and the other end of the second branch C2 are respectively connected in series with the two ends of the K1 switch; and the coils of the S1'and the KM1 are connected in series between the other end of the second branch and the grounding end. Power-on and power-off of the energy manager are completed by using hardware, and when software crashes, the system can be forcibly powered off by operating a switch, so that power utilization accidents are avoided.

Description

Technical Field

[0001] The invention relates to the field of power supply and distribution, and in particular to a novel starting circuit topology structure of a power supply and distribution control combination. Background Art

[0002] As the core system of the microgrid, the power supply and distribution control combination mainly includes energy management controller, power quality detection module, switch signal acquisition module and other equipment, which are used to complete the monitoring, management and dispatch of various electric energies such as energy storage, photovoltaic power generation, wind power generation, diesel generator and city power. At the same time, it has functions such as system protection, energy management, alarm processing, human-computer interaction, data statistics, historical data query, etc., which is the key to realize the automation of the microgrid power supply system. The starting circuit is an important part of the power supply and distribution control combination. It is used to control the start, operation and stop of the energy management controller of the power supply and distribution control combination, and ensure the reliability and safety of the power supply and distribution control combination. At the same time, it is also necessary to ensure the practicality of its circuit topology structure according to the use environment and actual needs. Therefore, the starting circuit design of the power supply and distribution control combination needs to meet the requirements of practicality, reliability and safety.

[0003] The power on and off of the existing energy management controller for the power supply and distribution control combination is completed by software. Figure 1 As shown, it specifically includes: 2 normally open self-locking switches S1 and S1', a DC normally open relay K1, where S1 is connected between the external power supply and the power supply voltage terminal of the energy manager, S1' is connected between the input port "DI1 start and stop" of the energy manager and the ground, the coil of K1 is connected between the power-on output terminal "DO4 power on" of the energy manager and the ground, and the switch of K1 is connected in parallel with the switch S1. "DI1 start and stop" is a passive node detection. When there is no external signal input, the input is a high-level signal, and the "DO4 power on" terminal outputs a low level. When the external is connected to the ground, the input is a low-level signal, and the "DO4 power on" terminal outputs a high level. The steps for software power-on are: close switch S1, power on the energy manager, close switch S1', "DI1 start / stop" detects a low-level signal, "DO4 power-on" terminal outputs a high level, the coil of K1 is energized, the switch of K1 is closed, and the system power-on is completed; the steps for software power-off are: open switch S1, open switch S1', "DI1 start / stop" detects a high-level signal, "DO4 power-on" port outputs a low level, the coil of K1 is energized, the switch of K1 is opened, and the system power-off is completed.

[0004] The existing startup circuit topology mainly relies on the software system itself to power off, which has the disadvantage that when the power supply and distribution control combination is running, the software system suddenly freezes or crashes, disconnects switches S1 and S1', and the software output port cannot output the correct level signal, so the system cannot be forced to power off, which will cause power accidents or power safety. In addition, the startup circuit cannot remotely control the power supply and distribution control combination to power off and on. Summary of the invention

[0005] In view of the above analysis, an embodiment of the present invention aims to provide a new starting circuit topology structure of a power supply and distribution control combination, so as to solve the problem that the existing starting circuit cannot force the energy management controller to power off when the software freezes or crashes, thereby causing power accidents; at the same time, the power supply and distribution control combination can be remotely powered on and off.

[0006] On the one hand, an embodiment of the present invention provides a new starting circuit topology structure of a power supply and distribution control combination, specifically including: a normally open DC contactor KM1, a normally closed DC relay K1, a switch S1, a switch S1', and a switch S2; wherein, the coil of the normally closed DC relay K1 is connected in series between the power output port of the energy manager and the ground; the switch of the normally open DC contactor KM1 is connected in series on the first branch C1; the switch S2 and the switch S1 are connected in series on the second branch C2; one end of the first branch C1 and one end of the second branch C2 are both connected to the positive electrode of the power supply; the other end of the first branch C1 and the other end of the second branch C2 are respectively connected in series at the two ends of the normally closed DC relay K1 switch; the switch S1' and the coil of the normally open DC contactor KM1 are connected in series between the other end of the second branch and the ground.

[0007] Furthermore, the switch S1 is set as a normally open reset switch, and the switch S1' is set as a normally closed switch.

[0008] Furthermore, the normally open reset switch S1 and the normally closed switch S1' are both adjacent to the other end of the second branch, and are implemented using a 1NO / 1NC (1 normally open / 1 normally closed) double-contact three-position reset knob switch SS1; SS1 includes positions A, B and C; A / B is a normally closed contact, serving as the two ends of the normally closed switch S1'; B / C is a normally open contact, serving as the two ends of the normally open reset switch S1.

[0009] Furthermore, the novel starting circuit topology structure of the power supply and distribution control combination also includes a remote control device that can remotely issue power-on and power-off commands, a normally open DC relay K2, and a switch S2'; the coil of the normally open DC relay K2 is connected in series between the power-on port of the remote control device and the ground; the switch of the normally open DC relay K2 is connected in series to the third branch C3; one end of the third branch C3 is connected to the positive pole of the power supply, and the other end is connected to the switch S2'; the switch S2' is connected in parallel with the switch S1'.

[0010] Furthermore, it also includes a switch S2"; the switch S2" is connected between the "local control / remote control" input port of the energy management controller and the ground.

[0011] Furthermore, the two normally open contacts of the 2NO / 1NC (2 normally open / 1 normally closed) three-contact two-position self-locking knob switch SS2 are used as switches S2' and S2", and the normally closed contact is used as switch S2, and the two positions are "local control" and "remote control" respectively.

[0012] On the other hand, the present invention provides a power supply and distribution control method of a novel startup circuit topology structure using the above power supply and distribution control combination, which uses "local control" or "remote control" to control the power on and off of the energy management controller, wherein the power on and off of the "local control" mode includes the following steps:

[0013] Local power-on steps: Rotate the 2NO / 1NC three-contact two-position self-locking rotary switch SS2 to the "local control" position, and rotate the 1NO / 1NC two-contact three-position reset rotary switch SS1 from position B to position C to close the normally open contact. The coil of KM1 is energized, the switch of KM1 is closed, and the B / C normally open contacts of SS1 are automatically reset from the closed state to the open state.

[0014] Local power-off steps: In the "local control" mode, turn the 1NO / 1NC double-contact three-position reset knob switch SS1 from position B to position A, and the normally closed contact is disconnected;

[0015] The following steps are included in powering on and off in "remote control" mode:

[0016] Remote control power-on steps: Rotate the 2NO / 1NC three-contact two-position self-locking knob switch SS2 to the "remote control" position. The remote control device issues a power-on command, causing the power-on port to output a high-level signal, the coil of the normally open DC relay K2 is energized, the switch of the normally open DC relay K2 is closed, the coil of KM1 is energized, and after the switch of KM1 is closed, the power-on port of the remote control device automatically outputs a low-level signal, and the switch of the normally open DC relay K2 is disconnected;

[0017] Remote control power-off steps: In the "remote control" mode, operate the remote control device to issue a power-off command, so that the power-off port of the energy management controller outputs a high level, the coil of the normally closed DC relay K1 is de-energized, the switch of the normally closed DC relay K1 is disconnected, the coil of the contactor KM1 is de-energized, and the switch of the contactor KM1 is disconnected.

[0018] Furthermore, when the power cannot be turned off by software in the "remote control" mode, the local hardware is used to force the power off, and the steps include:

[0019] Rotate the 2NO / 1NC three-contact two-position self-locking knob switch SS2 to the "local control" position, and rotate the 1NO / 1NC two-contact three-position reset knob switch SS1 from position B to position A, and the normally closed contact is disconnected.

[0020] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0021] 1. The startup circuit topology provided by the above technical solution can be used to power on and off the energy manager locally using hardware, without relying on software input and output signals. Once the software system crashes, the local operator can force the energy management system to power off by operating the switch to avoid power accidents.

[0022] 2. The startup circuit provides a way to remotely control the power on and off of the energy manager. When the operator selects the "remote control" mode, local control cannot be performed, that is, the local operator cannot complete the power on and off of the energy manager by operating the hardware. This can avoid the local operator's mistaken operation of the switch causing the system to shut down accidentally, reducing the probability of serious consequences caused by local personnel's operating errors. It can also prevent remote control operation and local control operation from being performed simultaneously, causing system behavior confusion and power accidents, which is safer and more reliable.

[0023] 3. By adopting 1NO / 1NC double-contact three-position reset knob switch SS1 and 2NO / 1NC three-contact two-position self-locking knob switch SS2, the volume of the components occupied by the system is smaller, the operation steps are simpler, and the starting circuit is more practical.

[0024] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0026] Figure 1 A starting circuit topology for an existing power supply and distribution control combination;

[0027] Figure 2 A schematic diagram of the topological structure of a novel startup circuit for a power supply and distribution control combination;

[0028] Figure 3It is a schematic diagram of the circuit loop when the local hardware of the power supply and distribution control combination is powered on;

[0029] Figure 4 A schematic diagram of the startup circuit loop after the local hardware of the power supply and distribution control combination is powered on;

[0030] Figure 5 It is a schematic diagram of the circuit loop when the power supply and distribution control combination local hardware is powered off;

[0031] Figure 6 This is a schematic diagram of a double-contact three-position reset type rotary switch SS1;

[0032] Figure 7 A schematic diagram of a new startup circuit topology structure for adding a remote control mode to the power supply and distribution control combination;

[0033] Figure 8 To increase the power supply and distribution control combination of the remote control mode, the local hardware power-on schematic diagram cannot be realized in the remote control mode;

[0034] Fig. 9 To add a remote control mode, the power supply and distribution control combination remote control power-on startup circuit circuit diagram;

[0035] Fig.10 To add a schematic diagram of the circuit loop for starting the power distribution control combination after the remote control power-on is completed in the remote control mode;

[0036] Fig.11 To increase the power supply and distribution control combination of the remote control mode, the local hardware power-off schematic diagram cannot be realized in the remote control mode;

[0037] Fig.12 To add a remote control mode, the power supply and distribution control combination remote control power-off startup circuit diagram;

[0038] Fig.13 The schematic diagram of the novel starting circuit topology structure of the optimal power supply and distribution control combination is shown in FIG. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0040] The power on and off of the existing energy management controller for the power supply and distribution control combination is completed by software. Figure 1As shown, it specifically includes: 2 normally open self-locking switches S1 and S1', a DC normally open relay K, where S1 is connected between the external power supply and the power supply voltage terminal of the energy manager, S1' is connected between the input port "DI1 start and stop" of the energy manager and the ground, the coil of relay K is connected between the power-on output terminal "DO4 power on" of the energy manager and the ground, and the switch of relay K is connected in parallel with switch S1. "DI1 start and stop" is a passive node detection. When there is no external signal input, the input is a high-level signal, and the "DO4 power on" terminal outputs a low level. When the external is connected to the ground, the input is a low-level signal, and the "DO4 power on" terminal outputs a high level. The steps for powering on the software are: closing switch S1, powering on the energy manager, closing switch S1', "DI1 start / stop" detects a low-level signal, "DO4 power-on" terminal outputs a high level, the coil of relay K is energized, the switch of relay K is closed, and the system power-on is completed; the steps for powering off the software are: opening switch S1, opening switch S1', "DI1 start / stop" detects a high-level signal, "DO4 power-on" terminal outputs a low level, the coil of relay K is de-energized, the switch of relay K is opened, and the system power-off is completed.

[0041] A specific embodiment of the present invention discloses a novel startup circuit topology structure of a power supply and distribution control combination, such as Figure 2 As shown, it specifically includes: a normally open DC contactor KM1, a normally closed DC relay K1, a switch S1, a switch S1', and a switch S2; wherein, the coil of the normally closed DC relay K1 is connected in series between the lower power output port of the energy manager and the ground; the switch of the normally open DC contactor KM1 is connected in series on the first branch C1; the switch S2 and the switch S1 are connected in series on the second branch C2; one end of the first branch C1 and one end of the second branch C2 are both connected to the positive electrode of the power supply; the other end of the first branch C1 and the other end of the second branch C2 are respectively connected in series to the two ends of the normally closed DC relay K1 switch; the switch S1' and the coil of the normally open DC contactor KM1 are connected in series between the other end of the second branch and the ground.

[0042] The second specific embodiment of the present invention discloses a method of using Figure 2 The power supply and distribution control method of the novel starting circuit topology structure of the power supply and distribution control combination shown.

[0043] Figure 3 This is the startup circuit loop when the local hardware is powered on. Close switch S2, switch S1, and switch S1' to energize the coil of KM1. Close the switch of KM1 and restore switch S1 from the closed state to the open state to complete the local hardware power-on of the energy manager. After the local hardware is powered on, the startup circuit current loop is as follows: Figure 4 The startup circuit when the local hardware is powered off is as follows Figure 5As shown, the switch S1' is disconnected, the coil of the contactor KM1 is powered off, the switch of the contactor KM1 is disconnected, and the system is powered off. This process does not require power off through the software and is not affected by the software system.

[0044] The above embodiment can power on and off the energy management controller by controlling the hardware, that is, the switch, and the process does not rely on software. Therefore, even if there is a sudden software crash, the above embodiment only needs to control the switch to force the energy management controller to power off, thereby avoiding power accidents.

[0045] Furthermore, the switch S1 is set as a normally open reset switch, and the switch S1' is set as a normally closed switch. In order to simplify the hardware structure, preferably, the normally open reset switch S1 and the normally closed switch S1' are both adjacent to the other end of the second branch. Figure 6 The 1NO / 1NC double contact three-position reset type knob switch SS1 shown in the figure realizes the functions of the normally open reset type switch S1 and the normally closed switch S1'. SS1 includes positions A, B and C; the normally closed contact between A / B is used as the two ends of the normally closed switch S1'; the normally open contact between B / C is used as the two ends of the normally open reset type switch S1.

[0046] In order to apply to more control scenarios, preferably, the novel startup circuit topology structure of the power supply and distribution control combination of the present invention can also remotely control the power on and off of the power supply and distribution control combination. Figure 7 As shown, the novel starting circuit topology structure of the power supply and distribution control combination of the present invention also includes a remote control device for remotely issuing power-on and power-off commands, a normally open DC relay K2, and a switch S2'; the coil of the normally open DC relay K2 is connected in series between the power-on port of the remote control device and the ground; one end of the switch of the normally open DC relay K2 is connected to the positive pole of the power supply, and the other end is connected to the switch S2'; the switch S2' is connected in parallel with the switch S1'.

[0047] When the remote control device issues a power-on command, the remote control system causes the power-on output port to output a high-voltage pulse, the coil of the normally open relay K2 is energized, the switch of the normally open relay K2 is closed, the coil of the contactor KM1 is energized, and the switch of the contactor KM1 is closed. After the switch of KM1 is closed, the power-on output port of the remote control system automatically outputs a low level, and the system power-on is completed; when the control device issues a power-off command, the power supply and distribution control combined energy management controller outputs a high voltage to the output port, the switch of the normally closed relay K1 is disconnected, the coil of the contactor KM1 is de-energized, the switch of the contactor KM1 is disconnected, and the system power-off is completed.

[0048] like Fig.13As shown, further, in order to realize the switching between local control and remote control, a normally open switch S2' is added and connected between the "local control / remote control" input port of the energy management controller and the ground, the switch S2' is set as a normally open switch, and the switch S2 is set as a normally closed switch; when the switch S2' is in the open state and the switch S2 is in the closed state, the system is in the "local control" mode; when the switch S2' is closed and the switch S2 is open, the system is in the "remote control" mode.

[0049] Preferably, the two normally open contacts in the 2NO / 1NC three-contact two-position self-locking knob switch SS2 are used as switches S2' and S2", and the normally closed contact is used as switch S2, and the two positions are "local control" and "remote control" respectively. When SS2 is rotated to the "local control" position, the two normally open contacts are disconnected, the normally closed contacts are closed, and the system is in the "local control" mode; when SS2 is rotated to the "remote control" position, the two normally open contacts are closed, the normally closed contacts are disconnected, and the system is in the "remote control" mode.

[0050] The third specific embodiment of the present invention discloses a method of using Figure 7 The power supply and distribution control method of the novel starting circuit topology structure of the power supply and distribution control combination shown.

[0051] like Figure 8 As shown, when the switch S2 is disconnected, when the switch SS1 is rotated from the B position to the C position to power on locally, the entire power supply control circuit cannot be closed to form a complete power supply loop. Therefore, the power supply and distribution control combination cannot perform local power-on operation at this time.

[0052] When switch S2 is disconnected, the power supply and distribution control combination needs to be powered on through the background remote control. The remote power-on process is as follows: Fig. 9 As shown, when the power-on command is issued by operating the remote control device, the remote control system causes the power-on output port to output a high voltage pulse, the coil of the normally open relay K2 is energized, the switch of the normally open relay K2 is closed, the coil of the contactor KM1 is energized, the switch of the contactor KM1 is closed, and after the switch of KM1 is closed, the power-on output port of the remote control system automatically outputs a low level, and the system power-on is completed.

[0053] Fig.10 The figure shows the power supply and distribution control combined starting circuit loop after the remote power-on is completed.

[0054] like Fig.11 As shown, when the switch S2 is disconnected, since the switch S2' short-circuits the normally closed contact of SS1, the switch SS1 is locally rotated from the B position to the A position to disconnect the normally closed contact, and the power supply circuit cannot be de-energized. Therefore, when the switch S2 is disconnected, the power supply and distribution control combination cannot perform a local power-off operation.

[0055] When switch S2 is disconnected, the power supply and distribution control combination needs to be powered off through the background remote control. Fig.12 As shown, the remote control device can send a power-off command through the communication device, so that the power supply and distribution control combined energy management controller outputs a high voltage to the output port, the switch of the normally closed relay K1 is disconnected, the coil of the contactor KM1 is powered off, the switch of the contactor KM1 is disconnected, and the system power-off is completed.

[0056] When the power supply and distribution control combination works in the remote control state and the system software freezes or crashes, the remote control device cannot communicate with the energy management controller, and the energy management control system of the power supply and distribution control combination cannot be forced to power off through the remote control device. At this time, you can first close the switch S2, then open the switch S1', and the contactor KM1 coil is powered off. The switch of contactor KM1 is disconnected, and the system can be forced to power off. This operation is for the situation that the software suddenly freezes or crashes during the operation of the project when the power supply and distribution control combination works in the remote control state.

[0057] Compared with the prior art, the novel startup circuit topology structure of the power supply and distribution control combination provided in the embodiment of the present invention can complete the power-on and power-off process of the energy manager through local hardware without relying on the software system. Therefore, in the event of a sudden freeze or crash of the software system, the power supply and distribution control combination can be forcibly powered off by simply disconnecting the switch S1', thereby avoiding power accidents in the microgrid system. At the same time, the circuit can remotely control the power-off and power-on of the power supply and distribution control combination, and in the remote control mode, general local power-on and power-off operations cannot be completed, thereby effectively preventing situations such as accidental shutdown caused by local personnel's misoperation, and reducing the probability of serious consequences due to local personnel's operational errors.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A novel starting circuit topology structure of a power supply and distribution control combination, characterized in that: It includes a normally open DC contactor KM1, a normally closed DC relay K1, a switch S1, a switch S1', and a switch S2; wherein, The coil of the normally closed DC relay K1 is connected in series between the lower electrical output port of the energy manager and the ground; The switch of the normally open DC contactor KM1 is connected in series to the first branch C1; The switch S2 is connected in series with the switch S1 on the second branch C2; One end of the first branch C1 and one end of the second branch C2 are both connected to the positive electrode of the power supply; the other end of the first branch C1 and the other end of the second branch C2 are respectively connected in series to the two ends of the normally closed DC relay K1 switch; The switch S1' and the coil of the normally open DC contactor KM1 are connected in series between the other end of the second branch and the grounding terminal.

2. The novel startup circuit topology structure of the power supply and distribution control combination as claimed in claim 1 is characterized in that: The switch S1 is a normally open switch, and the switch S1' is a normally closed switch.

3. The novel startup circuit topology structure of the power supply and distribution control combination as claimed in claim 2 is characterized in that: Switch S1 is a normally open reset switch.

4. The novel startup circuit topology structure of the power supply and distribution control combination as claimed in claim 3 is characterized in that: The normally open reset switch S1 and the normally closed switch S1' are both adjacent to the other end of the second branch and are implemented using a 1NO / 1NC double-contact three-position reset knob switch SS1; SS1 includes positions A, B and C; between A / B is a normally closed contact, serving as the two ends of the normally closed switch S1'; between B / C is a normally open contact, serving as the two ends of the normally open reset switch S1.

5. The novel startup circuit topology structure of the power supply and distribution control combination according to any one of claims 2 to 4, characterized in that: It also includes a remote control device for remotely issuing power-on and power-off commands, a normally open DC relay K2 and a switch S2'; The coil of the normally open DC relay K2 is connected in series between the power-on port of the remote control device and the ground; The normally open DC relay K2 is connected in parallel with the second branch; the switch S2' is connected in parallel with the switch S1'.

6. The novel startup circuit topology structure of the power supply and distribution control combination as claimed in claim 5 is characterized in that: Also includes switch S2"; The switch S2 is connected between the "local control / remote control" input port of the energy management controller and ground.

7. The novel startup circuit topology structure of the power supply and distribution control combination as claimed in claim 6 is characterized in that: The two normally open contacts of the 2NO / 1NC three-contact two-position self-locking knob switch SS2 are used as switches S2' and S2", and the normally closed contact is used as switch S2. The two positions are "local control" and "remote control" respectively.

8. A power supply and distribution control method using the novel startup circuit topology structure of the power supply and distribution control combination of claim 1, characterized in that: The following steps are involved: Local power-on steps: close switch S2, close switch S1, close switch S1', energize the coil of KM1 to close the switch of KM1; When the switch of KM1 is closed, the switch S1 is restored from the closed state to the open state; Local power-off steps: Disconnect switch S1'.

9. A power supply and distribution control method using the novel startup circuit topology structure of the power supply and distribution control combination of claim 7, characterized in that: The energy management controller is powered on and off by "local control" or "remote control"; wherein, The power on and off in "local control" mode includes the following steps: Local power-on steps: Rotate the 2NO / 1NC three-contact two-position self-locking rotary switch SS2 to the "local control" position, and rotate the 1NO / 1NC two-contact three-position reset rotary switch SS1 from position B to position C to close the normally open contact. The coil of KM1 is energized, the switch of KM1 is closed, and the B / C normally open contacts of SS1 are automatically reset from the closed state to the open state. Local power-off steps: In the "local control" mode, rotate the 1 normally open / 1 normally closed double-contact three-position reset type knob switch SS1 from position B to position A, and the normally closed contact is disconnected; The following steps are included in powering on and off in "remote control" mode: Remote control power-on steps: Rotate the 2-NO / 1-NC three-contact two-position self-locking knob switch SS2 to the "remote control" position. The remote control device issues a power-on command, causing the power-on port to output a high-level signal, the coil of the normally open DC relay K2 is energized, the switch of the normally open DC relay K2 is closed, the coil of KM1 is energized, and after the switch of KM1 is closed, the power-on port of the remote control device automatically outputs a low-level signal, and the switch of the normally open DC relay K2 is disconnected; Remote control power-off steps: In the "remote control" mode, operate the remote control device to issue a power-off command, so that the power-off port of the energy management controller outputs a high level, the coil of the normally closed DC relay K1 is de-energized, the switch of the normally closed DC relay K1 is disconnected, the coil of the contactor KM1 is de-energized, and the switch of the contactor KM1 is disconnected.

10. The power supply and distribution method according to claim 9 using the novel startup circuit topology structure of the power supply and distribution control combination according to claim 7, characterized in that: When the power cannot be turned off by software in "remote control" mode, use local hardware to force power off. The steps include: Rotate the 2NO / 1NC three-contact two-position self-locking rotary switch SS2 to the "local control" position, and rotate the 1NO / 1NC two-contact three-position reset rotary switch SS1 from position B to position A, and the normally closed contact is disconnected.

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