A method and system for automatically switching on a backup power supply suitable for busbar multi-line input

Abstract

The present invention discloses a method and system for automatically switching on a backup power supply for a busbar with multiple incoming lines. Two busbar sections are provided, each with multiple incoming lines. The discharge logic in the automatic switching on logic circuit for the backup power supply for the two busbar sections includes: performing a logical OR operation on the "manual trip and remote trip" input signals of all incoming lines in each busbar section to obtain a first-stage logic output; and performing a logical AND operation on the first-stage output after the "manual trip and remote trip" time limit is extended with the logic output of the single busbar section with no voltage to obtain a second-stage logic output. The present invention solves the problem of automatically switching on a backup power supply for multiple incoming lines and reduces the hardware resource overhead and wiring of the automatic switching on device for the backup power supply.

Description

Technical Field

[0001] The present invention relates to the technical field of relay protection, and in particular to a method and system for automatically switching on a backup power supply suitable for busbar multi-path incoming lines. Background Art

[0002] The automatic backup power supply device (abbreviated as backup automatic switch) is a relay protection device used to provide power supply when the busbar loses power. Figure 1 As shown, traditionally, each of the two busbar sections has only one incoming line. 1DL and 2DL are the incoming line breakers for the first busbar section (referred to as busbar 1) and busbar section (referred to as busbar 2), respectively, and 3DL is the section circuit breaker. UL1 and UL2 are the voltage transformers for incoming lines 1 and 2, respectively; IL1 and IL2 are the current transformers for incoming lines 1 and 2, respectively. The backup AUT logic includes charging logic (preparation logic for the backup AUT), discharging logic (locking logic for the AUT), and action logic. The backup AUT is divided into line backup AUT (referred to as backup incoming line) and section backup AUT (referred to as backup section).

[0003] A backup incoming line supplies power to one busbar segment, while the sectionalizing circuit breaker is closed, supplying power to the other busbar segment. If the incoming line loses power, causing both busbar segments to lose power, the circuit breaker on the other incoming line is closed, and the other incoming line supplies power to the two lost busbar segments. This system includes backup automatic re-entry modes 1 and 2. In backup automatic re-entry mode 1, sectionalizing circuit breaker 3DL is closed, sectionalizing circuit breaker 1DL is closed, and sectionalizing circuit breaker 2DL is tripped. If busbar 1 loses voltage, sectionalizing circuit breaker 1DL is tripped, and sectionalizing circuit breaker 2DL is closed, enabling the two incoming lines to provide backup power to the one. In backup automatic re-entry mode 2, sectionalizing circuit breaker 3DL is closed, sectionalizing circuit breaker 2DL is closed, and sectionalizing circuit breaker 1DL is tripped. If busbar 2 loses voltage, sectionalizing circuit breaker 2DL is tripped, and sectionalizing circuit breaker 1DL is closed, enabling the one incoming line to provide backup power to the two incoming lines. like Figures 2 to 4 As shown, the charging logic diagram, discharging logic diagram and action logic diagram of the traditional automatic switching mode 1 in which the two bus sections each have only one incoming line; the logic of the automatic switching mode 2 is similar to that of the automatic switching mode 1.

[0004] Backup segmentation means that two incoming lines supply power to two sections of busbars respectively, and the section circuit breaker trips. When one incoming line loses power, causing the busbar corresponding to this incoming line to lose power, the section circuit breaker is closed, and the busbar that has lost power is supplied by another section of the busbar. It includes backup automatic transfer mode 3 and mode 4. Backup automatic transfer mode 3: Section circuit breaker 3DL trips, 1 bus incoming line circuit breaker 1DL is in the closed position, and 2 bus incoming line circuit breaker 2DL is in the closed position. When 1 bus loses pressure, 1 bus incoming line circuit breaker 1DL trips, and section circuit breaker 3DL is closed, so that 2 bus incoming lines can support 1 bus. Backup automatic transfer mode 4: Section circuit breaker 3DL trips, 1 bus incoming line circuit breaker 1DL is in the closed position, and 2 bus incoming line circuit breaker 2DL is in the closed position. When 2 bus loses pressure, 2 bus incoming line circuit breaker 2DL trips, and section circuit breaker 3DL is closed, so that 1 bus incoming line can support 2 bus. As Figures 5 to 7 As shown, the charging logic diagram, discharging logic diagram and action logic diagram of the traditional automatic switching mode 3 in which the two bus sections each have only one incoming line; the logic of the automatic switching mode 4 is similar to that of the automatic switching mode 3.

[0005] Traditional backup AUT circuit breaker logic states that the backup AUT circuit breaker should not operate when the incoming circuit breaker is manually or remotely tripped. This can be achieved in two ways: First, the incoming line protection device outputs a "closed" contact connected to the backup AUT circuit breaker's "closed" input terminal. When the "closed" input is "0," indicating that the circuit breaker has been manually or remotely tripped, the backup AUT circuit breaker is locked out. Second, when the "closed" input is not connected, the manual and remote trip contacts are connected to the backup AUT circuit breaker's "locked backup AUT circuit breaker" input terminal to directly lock the backup AUT circuit breaker. Both of these methods can also be implemented by transmitting a GOOSE signal. However, in some cases, a busbar segment may have more than one incoming line. For example, in a ring network, each busbar segment has one incoming line and one outgoing line. In special circumstances, the incoming line may become an outgoing line, and the outgoing line may become an incoming line, resulting in two possible incoming lines per busbar segment. When a tie line is connected to a busbar, an additional incoming line is added. When a ring network includes a tie line, each busbar segment has three possible incoming lines. For busbars with multiple incoming lines, traditional backup automatic switching circuit breakers use a "after-closing" input terminal for one incoming line on a section of busbar to determine the incoming line backup automatic switching logic, or connect the manual and remote trip incoming line circuit breaker contacts to the backup automatic switching circuit breaker's "locked backup automatic switching" input terminal to directly lock the backup automatic switching circuit breaker. This has some problems, such as:

[0006] 1. If a certain incoming line connected to the busbar is not connected to its "after closing" input terminal, or the contact of the manual trip or remote trip circuit breaker of this incoming line is not connected to the "locked standby automatic transfer" input terminal, when the incoming line circuit breaker is manually tripped or remotely tripped, it will result in the standby automatic transfer not being locked, and the standby automatic transfer will malfunction;

[0007] 2. "After closing" is a non-instantaneous signal. If the "after closing" contacts of all incoming lines of a certain section of bus are connected to the same "after closing" input terminal of this section of bus, as long as one of the incoming lines is in the "after closing" state, the standby automatic start-up switch will still judge this input as "1" even if the other incoming lines are not in the "after closing" state. At this time, when the incoming power supply circuit breaker is manually tripped or remotely tripped, since the other incoming lines on this section of bus are still in the "after closing" position, the standby automatic start-up switch will still judge the "after closing" of this section of bus as "1", which will result in the standby automatic start-up switch not being locked, and the standby automatic start-up switch will malfunction; if the manual trip and remote trip locking contacts of all incoming lines are connected to the same "locked standby automatic start-up switch" input terminal of the standby automatic start-up switch, when a non-powered incoming line circuit breaker is manually tripped or remotely tripped, it will cause the standby automatic start-up switch to be locked. At this time, if a section of bus loses power, the standby automatic start-up switch will not be able to operate;

[0008] 3. If the standby automatic switch is set with a "after-closing" input terminal for each incoming line, it will waste input resources and there will be no corresponding response plan; if the standby automatic switch is set with a "locked standby automatic switch" input terminal for each incoming line, it will waste input resources and there will be no corresponding response plan. Summary of the Invention

[0009] Purpose of the Invention: The present invention aims to provide a method for automatically enabling backup power for multiple busbar inputs, which solves the problem of automatically enabling backup power for multiple inputs and reduces the hardware resource overhead and wiring required for the automatic backup power enabling device. Furthermore, the present invention provides a system for automatically enabling backup power for multiple busbar inputs, which ensures the correct operation of automatic backup power enabling for multiple busbar inputs.

[0010] Technical solution: A method for automatically switching on a backup power supply for a bus with multiple incoming lines. Two bus sections are provided, each with multiple incoming lines. The discharge logic in the automatic switching on of the backup power supply for the two bus sections includes:

[0011] Perform a logical OR operation on the "manual trip and remote trip" input signals of all incoming lines in each bus section to obtain the first-stage logic output; perform a logical AND operation on the first-stage output after the "manual trip and remote trip" expansion time limit is widened with the logic output of the single-section bus voltage without pressure to obtain the second-stage logic output.

[0012] Furthermore, the discharge logic in the automatic switching-in logic of the backup power supply further includes:

[0013] If the incoming backup power supply is in automatic switching mode, perform a logical OR operation on the second-stage logic output of the single-section bus, the logic output of the trip position of the section circuit breaker, the logic output of the total blocking of automatic switching of the backup power supply, and the logic output of the logic negation of the soft pressure plate corresponding to the automatic switching of the backup power supply;

[0014] If the automatic switching mode of the sectionalized backup power supply is used, the second-stage logic output of each bus section of the two bus sections is combined with the logic output of the logic negation of the trip position of the sectionalized circuit breaker, the logic output of the total blocking of the automatic switching of the backup power supply, and the logic output of the logic negation of the soft pressure plate corresponding to the automatic switching mode of the backup power supply.

[0015] The section circuit breaker is used to control the power supply between the two bus sections; the backup power supply automatic start-up general lock is used to input a signal that does not allow the backup power supply to be automatically started; the soft pressure plate is a software setting for function start and stop.

[0016] Furthermore, there are two ways to implement the logical OR of the "manual tripping and remote tripping" input signals of all incoming lines: the first way is that when the backup power supply is automatically put into use and the terminal transmits the signal, the "manual tripping and remote tripping" closed contact signals of all incoming lines are connected in parallel to the "manual tripping and remote tripping" input terminals; the second way is that when the backup power supply is automatically put into use and GOOSE transmits the signal, the "manual tripping and remote tripping" GOOSE output signals of all incoming lines are logically ORed.

[0017] Furthermore, the two bus sections are the first bus section and the second bus section, and the incoming line circuit breaker is used to open and close the power supply of each incoming line of all the incoming lines on the first bus section and the second bus section; the automatic switching mode of the backup power supply includes automatic switching mode one, two, three, and four; the automatic switching mode of the incoming line backup power supply includes automatic switching mode one and automatic switching mode two; the automatic switching mode of the segmented backup power supply includes automatic switching mode three and automatic switching mode four; the aforementioned automatic switching mode of the backup power supply: the segmented circuit breaker is in the closed position, and the incoming line circuit breakers corresponding to all the incoming lines of the first bus section are in the closed position, and the incoming line circuit breakers corresponding to all the incoming lines of the second bus section are all in the tripped position. When the first bus section loses pressure, the incoming line circuit breakers corresponding to all the incoming lines of the second bus section are closed. This is the backup incoming line circuit breaker of mode one. The second mode of automatic switching of the aforementioned backup power supply: the sectionalizing circuit breaker is in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the second section bus are in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the first section bus are all in the tripped position. When the second section bus loses pressure, the incoming circuit breakers corresponding to all incoming lines of the first section bus are closed. This is the backup incoming circuit breaker of mode two; the third mode of automatic switching of the aforementioned backup power supply: the sectionalizing circuit breaker is tripped, and the incoming circuit breakers corresponding to all incoming lines of the first section bus are in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the second section bus are in the closed position. When the first section bus loses pressure, the sectionalizing circuit breaker is closed; the fourth mode of automatic switching of the aforementioned backup power supply: the sectionalizing circuit breaker is tripped, and the incoming circuit breakers corresponding to all incoming lines of the first section bus are in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the second section bus are in the closed position. When the second section bus loses pressure, the sectionalizing circuit breaker is closed.

[0018] Furthermore, the charging logic in the automatic switching logic of the backup power supply is as follows:

[0019] If the incoming backup power supply is in automatic switching mode, the logical output of the logic negation of the section circuit breaker tripping, the logical output of the voltage of each busbar in the two sections, the logical output of the logic negation of the total blocking of the automatic switching of the backup power supply, and the logical output of the soft pressure plate corresponding to the automatic switching of the backup power supply are logically ANDed together, and then the output is delayed after the automatic charging of the backup power supply;

[0020] If the automatic switching mode of the segmented backup power supply is used, the logic output of the segmented circuit breaker tripping, the logic output of the voltage of each bus section in the two bus sections, the logic output of the logic negation of the total lock of the automatic switching of the backup power supply, and the logic output of the soft pressure plate corresponding to the automatic switching mode of the backup power supply are logically ANDed together, and then output after the delay of the automatic charging of the backup power supply.

[0021] Furthermore, the action logic in the automatic switching logic of the backup power supply is as follows:

[0022] If the incoming line backup power supply is in automatic switching mode, the charging logic output corresponding to the automatic switching mode of the backup power supply, the logic output of the no-voltage of each busbar in the two busbar sections, the logic output of the logical negation of the total blocking of the automatic switching of the backup power supply, and the logic output of the soft pressure plate corresponding to the automatic switching mode of the backup power supply are logically ANDed together, and then after the adjustable automatic switching action delay of the backup power supply, the backup incoming line circuit breaker in the automatic switching mode of the backup power supply is closed;

[0023] If it is a segmented backup power supply automatic start-up mode, the charging logic output corresponding to the backup power supply automatic start-up mode, the logic output corresponding to the bus voltage no pressure in the backup power supply automatic start-up mode, the logic output corresponding to the bus voltage with pressure in the backup power supply automatic start-up mode, the logic output of the logic negation of the backup power supply automatic start-up total lockout, and the logic output of the soft pressure plate corresponding to the backup power supply automatic start-up mode are logically ANDed together, and then after the adjustable backup power supply automatic start-up action delay, the segmented circuit breaker is closed.

[0024] Furthermore, the "manual trip and remote trip" input signal of the incoming line is formed by logically ORing the manual trip signal and the remote trip signal; the manual trip signal is the contact of the incoming line manual trip handle connected to the input terminal of the incoming line protection device, and the incoming line protection device collects this manual trip signal; the remote trip signal is a trip signal sent by the computer system received by the incoming line protection device through communication; the incoming line protection device is a protection device located on the incoming line, which collects and controls the incoming line circuit breaker; the widening time limit is 200 milliseconds.

[0025] In addition, the present invention also provides a backup power automatic start-up system suitable for busbar multiple incoming lines, including two busbar sections, and the two busbar sections have multiple incoming lines, and also include a discharge logic module in the backup power automatic start-up logic circuit: used to perform logical OR on the "manual trip and remote trip" input signals of all incoming lines in each busbar section to obtain the first-stage logic output; the first-stage output is logically ANDed with the non-pressurized voltage of the single-stage busbar after the "manual trip and remote trip" expansion time limit is widened to obtain the second-stage logic output.

[0026] The present invention also provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-described method when executing the computer program. A computer-readable storage medium having the computer program stored thereon is provided, wherein the computer program implements the steps of the above-described method when executed by the processor.

[0027] Beneficial effect: The method of the present invention has the following advantages over the prior art: 1. By performing a logical OR operation on the "manual trip and remote trip" input signals of all incoming lines of the standby automatic switching bus, and then performing a logical judgment on whether one incoming line of this section of bus is manually tripped or remotely tripped during the widening time limit, and combining the corresponding bus voltage with whether it is lower than the set pressure set value, it is finally judged whether to lock the standby automatic switching; 2. "Manual trip and remote trip" is an instantaneous signal of a manual or remote trip circuit breaker, and its voltage will not remain unchanged like the "after closing" signal, so that all incoming lines of a section of bus are The "manual trip and remote trip" output contact of the line is connected to an input terminal of the standby automatic start-up, so it can still be judged whether the standby automatic start-up locking operation is performed; at the same time, the two "after closing" input terminals of the two sections of the existing standby automatic start-up are changed to two "manual trip and remote trip" input terminals of all incoming lines of the two sections of the bus, so it does not affect the other terminals of the existing standby automatic start-up and does not increase the hardware overhead of the standby automatic start-up; 3. The trip position of the incoming line circuit breaker, the incoming line voltage and current do not participate in the logical judgment of the standby automatic start-up, which simplifies the logic of the standby automatic start-up and reduces the hardware resource overhead and wiring of the standby automatic start-up. Compared with the existing technology, the system of the present invention has the advantage that it can ensure the correct operation of the automatic start-up of the standby power supply for each section of the bus on the basis of multiple incoming lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a primary system diagram corresponding to the standby automatic switching circuit breaker in the prior art where each of the two bus sections has only one incoming line;

[0029] Figure 2 This is a charging logic diagram of the standby automatic switching mode 1 in the prior art where each of the two bus sections has only one incoming line;

[0030] Figure 3 This is a discharge logic diagram of the standby automatic switching mode 1 in the prior art where each of the two bus sections has only one incoming line;

[0031] Figure 4 This is the action logic diagram of the standby automatic switching mode 1 in the prior art where each of the two bus sections has only one incoming line;

[0032] Figure 5 This is a charging logic diagram of the standby automatic switching mode 3 in the prior art where each of the two bus sections has only one incoming line;

[0033] Figure 6 This is a discharge logic diagram of the standby automatic switching mode 3 in the prior art where each of the two bus sections has only one incoming line;

[0034] Figure 7 This is the action logic diagram of the standby automatic switching mode 3 in the prior art where each of the two bus sections has only one incoming line;

[0035] Figure 8 This is a primary system diagram of the standby automatic switching mode with two bus sections having multiple incoming lines in this method;

[0036] Figure 9 This is the charging logic diagram of the standby automatic switching mode 1 in which the two bus sections of this method have multiple incoming lines respectively;

[0037] Figure 10 This is the discharge logic diagram of the standby automatic switching mode 1 in which two bus sections have multiple incoming lines respectively;

[0038] Figure 11 This is the action logic diagram of standby automatic switching mode 1 in this method where two bus sections have multiple incoming lines respectively;

[0039] Figure 12 This is the charging logic diagram of the backup automatic switching mode 3 in which the two bus sections of this method have multiple incoming lines respectively;

[0040] Figure 13 This is the discharge logic diagram of the backup automatic switching mode 3 in which two bus sections have multiple incoming lines respectively;

[0041] Figure 14 This is the action logic diagram of the backup automatic switching mode 3 in this method where the two bus sections have multiple incoming lines. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0043] like Figure 8As shown, a method for automatically switching on a backup power supply for a busbar with multiple incoming lines is described, wherein the busbar comprises two sections, namely a first section 1 and a second section 2. A section circuit breaker 3DL is provided between the first and second sections 1 and 2. The first section 1 has multiple incoming lines, including line 11, line 12, line 13, ..., line 1m, and the second section 2 has multiple incoming lines, including line 21, line 22, line 23, ..., line 2n. Specifically, 11DL, 12DL, 13DL, ..., 1mDL are circuit breakers corresponding to incoming lines 11, 12, 13, ..., 1m of the first section 1; 21DL, 22DL, 23DL, ..., 2nDL are circuit breakers corresponding to incoming lines 21, 22, 23, ..., 2n of the second section 2.

[0044] The automatic backup switch is divided into line-input automatic backup switch and section-by-section automatic backup switch. The line-input automatic backup switch includes the first automatic backup power supply switch and the second automatic backup power supply switch; the section-by-section automatic backup switch includes the third automatic backup power supply switch and the fourth automatic backup power supply switch.

[0045] Automatic backup power supply mode 1: Section circuit breaker 3DL is closed, and any of the incoming circuit breakers 11DL, 12DL, 13DL, ..., and 1mDL of busbar 1 are closed. The incoming circuit breakers 21DL, 22DL, 23DL, ..., and 2nDL of busbar 2 are tripped. If busbar 1 loses voltage, all incoming circuit breakers of busbar 2 are closed, allowing busbar 2 to provide backup power to busbar 1.

[0046] Automatic backup power supply mode 2: Section circuit breaker 3DL is closed, and any of the incoming busbar 2 circuit breakers 21DL, 22DL, 23DL, ..., 2nDL is closed. The incoming busbar 1 circuit breakers 11DL, 12DL, 13DL, ..., 1mDL are all tripped. If busbar 2 loses voltage, the incoming busbar 1 circuit breaker closes, enabling busbar 1 to provide backup power to busbar 2.

[0047] Automatic backup power supply mode three: Section circuit breaker 3DL trips, and one of the incoming circuit breakers 11DL, 12DL, 13DL, ..., 1mDL for busbar 1 is closed, and one of the incoming circuit breakers 21DL, 22DL, 23DL, ..., 2nDL for busbar 2 is closed. If busbar 1 loses voltage, section circuit breaker 3DL closes, allowing busbar 2's incoming line to provide backup power to busbar 1.

[0048] Automatic backup power supply mode 4: Section circuit breaker 3DL trips, and one of the incoming circuit breakers 11DL, 12DL, 13DL, ..., 1mDL for busbar 1 is closed. Also, one of the incoming circuit breakers 21DL, 22DL, 23DL, ..., 2nDL for busbar 2 is closed. If busbar 2 loses voltage, section 3DL closes, enabling busbar 1 to provide backup power to busbar 2.

[0049] The standby automatic transfer logic includes charging logic, i.e. standby automatic transfer readiness logic, discharging logic, i.e. blocking automatic transfer blocking logic, and action logic.

[0050] like Figure 9 As shown, the charging logic of the standby power supply automatic start-up mode 1 is: perform a logical AND operation on the logical negation of the logic output of the section circuit breaker tripping position, the logic output of the voltage of the first section bus 1 being pressurized, the logic output of the voltage of the second section bus 2 being pressurized, the logical negation of the logic output of the standby power supply automatic start-up total lockout, and the logic output of the soft pressure plate of the standby power supply automatic start-up mode 1, and then perform a logical output after a 15-second delay in the standby power supply automatic start-up charging time; among them, voltage pressurized refers to the voltage being higher than the set voltage pressurized value; tripping refers to the circuit breaker opening position; standby automatic start-up total lockout refers to the input signal that does not allow the standby automatic start-up action; the soft pressure plate refers to the software setting for function on / off.

[0051] Similarly, the charging logic for the second mode of automatic switching of the backup power supply is: perform a logical AND operation on the logical negation of the logic output of the section circuit breaker tripping, the logic output of the voltage of the first section bus 1 being pressurized, the logic output of the voltage of the second section bus 2 being pressurized, the logical negation of the logic output of the total lockout of automatic switching of the backup power supply, and the logic output of the soft pressure plate of the second mode of automatic switching of the backup power supply, and then perform a logical output after a 15-second delay in the automatic charging of the backup power supply.

[0052] like Figure 12 As shown, the charging logic of the third mode of automatic switching of the backup power supply is: the logic output of the tripping position of the section circuit breaker, the logic output of the voltage of the first section bus 1, the logic output of the voltage of the second section bus 2, the logic output of the logic negation of the total lock of the automatic switching of the backup power supply, and the logic output of the soft pressure plate of the third mode of automatic switching of the backup power supply are logically ANDed together, and then the logic output is made after the backup power supply automatic switching charging time delay of 15 seconds.

[0053] Similarly, the charging logic of the fourth mode of automatic switching of the backup power supply is: the logic output of the tripping position of the section circuit breaker, the logic output of the voltage of the first section bus 1, the logic output of the voltage of the second section bus 2, the logic output of the logic negation of the total lock of the automatic switching of the backup power supply, and the logic output of the soft pressure plate of the fourth mode of automatic switching of the backup power supply are logically ANDed together, and then the logic output is made after a 15-second delay in the automatic charging of the backup power supply.

[0054] like Figure 10 As shown, the discharge logic of the automatic switching mode of the backup power supply is as follows: the "manual trip and remote trip" input signals of all incoming lines in the first section bus 1 are logically ORed, and after the "manual trip and remote trip" extension time limit is extended, the logical AND is performed with the voltage of the first section bus 1 without pressure to obtain the first stage logic output; the first stage logic output is logically ORed together with the logic output of the trip position of the section circuit breaker, the logic output of the automatic switching of the backup power supply, and the logical NOT logic output of the soft pressure plate of the automatic switching mode of the backup power supply;

[0055] Specific judgment: If the "manual trip or remote trip" signal after widening is "1", that is, one of the incoming lines of this section of busbar is manually tripped or remotely tripped during the widening time limit, during this period, when the corresponding busbar voltage is lower than the set voltage set value, it is determined that the voltage of this section of busbar is not sound due to manual tripping or remote tripping of the incoming line circuit breaker, and the standby automatic transfer is blocked; during this period, when the corresponding busbar voltage is higher than the set voltage set value, it is determined that the voltage of this section of busbar is not sound due to manual tripping or remote tripping of the incoming line circuit breaker, and the standby automatic transfer is not blocked. If the "manual trip or remote trip" signal after widening is "0", that is, no incoming line of this section of busbar is manually tripped or remotely tripped during the widening time limit, during this period, when the corresponding busbar voltage is lower than the set voltage set value, it is determined that the busbar voltage is not sound due to manual tripping or remote tripping of the incoming line circuit breaker, and the standby automatic transfer is started; during this period, when the corresponding busbar voltage is higher than the set voltage set value, the standby automatic transfer is not blocked.

[0056] Similarly, the discharge logic for the second mode of automatic switching of the backup power supply is as follows: perform a logical OR operation on the “manual trip and remote trip” input signals of all incoming lines in the second section bus 2, and after the “manual trip and remote trip” extension time limit is extended, perform a logical AND operation on the voltage of the second section bus 2, to obtain the first stage logic output; perform a logical OR operation on the first stage logic output, the logic output of the trip position of the section circuit breaker, the logic output of the automatic switching of the backup power supply, and the logic output of the soft pressure plate of the second mode of automatic switching of the backup power supply, with the logic negation thereof;

[0057] like Figure 13 As shown, the discharge logic of the third mode of automatic switching of the backup power supply is: perform a logical OR on the “manual trip and remote trip” input signals of all incoming lines in the first section bus 1, and perform a logical AND on the non-pressurized voltage of the first section bus 1 after the “manual trip and remote trip” extension time limit is widened, to obtain the first stage logic output; perform a logical OR on the “manual trip and remote trip” input signals of all incoming lines in the second section bus 2, and perform a logical AND on the non-pressurized voltage of the second section bus 2 after the “manual trip and remote trip” extension time limit is widened, to obtain the first stage logic output; perform a logical OR on the first stage logic output obtained from each section of the two busbars, the logical NOT output of the trip position of the sectional circuit breaker, the logical output of the total interlock of automatic switching of the backup power supply, and the logical NOT output of the soft pressure plate of the third mode of automatic switching of the backup power supply;

[0058] Similarly, the discharge logic of the fourth mode of automatic switching of the backup power supply is: perform a logical OR on the "manual trip and remote trip" input signals of all incoming lines in the first section bus 1, and perform a logical AND on the non-pressurized voltage of the first section bus 1 after the "manual trip and remote trip" extension time limit is widened to obtain the first stage logic output; perform a logical OR on the "manual trip and remote trip" input signals of all incoming lines in the second section bus 2, and perform a logical AND on the non-pressurized voltage of the second section bus 2 after the "manual trip and remote trip" extension time limit is widened to obtain the first stage logic output; perform a logical OR on the first stage logic output obtained from each section of the two busbars, the logical NOT output of the trip position of the section circuit breaker, the logical output of the total lockout of the automatic switching of the backup power supply, and the logical NOT output of the soft pressure plate in the fourth mode of automatic switching of the backup power supply.

[0059] Among them, the above-mentioned non-voltage refers to the voltage being lower than the set voltage value; the extension time limit of "manual trip and remote trip" is a fixed time length, and the extension time limit is 200 milliseconds; all incoming line "manual trip and remote trip" input signals are logically or realized in two ways, the first way: when the standby automatic switch adopts the terminal to transmit the signal, the standby automatic switch sets the "manual trip and remote trip" input terminal, and all incoming line "manual trip and remote trip" closed contact signals are connected in parallel to the "manual trip and remote trip" input terminal; "manual trip and remote trip" is to collect the manual trip input signal, perform logical OR with the remote trip signal received by communication, and form a "manual trip and remote trip" signal; the incoming line The "manual trip and remote trip" input signal is formed by the logical OR of the manual trip signal and the remote trip signal; the manual trip signal is the contact of the incoming line manual trip handle connected to the input terminal of the incoming line protection device, and the incoming line protection device collects this manual trip input signal; the remote trip signal is the trip signal sent by the computer system received by the incoming line protection device through communication; the incoming line protection device is a protection device located on the incoming line, which collects the current of the incoming line current transformer and collects and controls the incoming line circuit breaker; when the standby automatic switch adopts GOOSE to transmit signals, all the incoming line "manual trip and remote trip" GOOSE signals are logically ORed.

[0060] like Figure 11 As shown, the action logic of the standby power supply automatic switching mode 1 is: the charging logic output of the standby power supply automatic switching mode 1, the logic output of the voltage no voltage of the first bus section 1, the logic output of the voltage no voltage of the second bus section 2, the logic output of the logic negation of the standby power supply automatic switching total lock, and the logic output of the soft pressure plate of the standby power supply automatic switching mode 1 are logically ANDed together, and then after an adjustable standby power supply automatic switching action delay, the standby incoming line circuit breaker of the standby power supply automatic switching mode 1, that is, the incoming line circuit breaker of the second bus section, is closed.

[0061] Similarly, the action logic of the second automatic switching mode of the backup power supply is: the charging logic output of the second automatic switching mode of the backup power supply, the logic output of the no-voltage voltage of the first section bus 1, the logic output of the no-voltage voltage of the second section bus 2, the logic output of the logic negation of the total lockout of the automatic switching of the backup power supply, and the logic output of the soft pressure plate of the second automatic switching mode of the backup power supply are logically ANDed together, and then after the adjustable automatic switching action delay of the backup power supply, the backup incoming circuit breaker of the second automatic switching mode of the backup power supply, that is, the incoming circuit breaker of the second section bus, is closed.

[0062] like Figure 14 As shown, the action logic of the third automatic switching mode of the backup power supply is: the charging logic output of the third automatic switching mode of the backup power supply, the logic output of the voltage of the first section bus 1 without pressure, the logic output of the voltage of the second section bus 2 with pressure, the logic output of the logic negation of the total locking of the automatic switching of the backup power supply, and the logic output of the soft pressure plate of the third automatic switching mode of the backup power supply are logically ANDed together, and then after the adjustable automatic switching action delay of the backup power supply, the section circuit breaker is closed.

[0063] Similarly, the action logic of the fourth automatic switching mode of the backup power supply is: the charging logic output of the fourth automatic switching mode of the backup power supply, the logic output of the voltage of the first section bus 1, the logic output of the voltage of the second section bus 2, the logic non-logic output of the total lock of the automatic switching of the backup power supply, and the logic output of the soft pressure plate of the fourth automatic switching mode of the backup power supply are logically ANDed together, and then after the adjustable automatic switching action delay of the backup power supply, the section circuit breaker is closed.

[0064] Among them, voltage pressure refers to the voltage being higher than the set voltage pressure setting value, and the aforementioned voltage non-pressure refers to the voltage being lower than the set voltage pressure setting value; the voltage pressure setting value is set to 70% of the rated voltage, and the voltage non-pressure setting value is set to 30% of the rated voltage.

[0065] In addition, the present invention also provides a backup power automatic start-up system suitable for busbar multiple incoming lines, including two busbar sections, and the two busbar sections have multiple incoming lines, and also include a discharge logic module in the backup power automatic start-up logic circuit: used to perform logical OR on the "manual trip and remote trip" input signals of all incoming lines in each busbar section to obtain the first-stage logic output; the first-stage output is logically ANDed with the non-pressurized voltage of the single-stage busbar after the "manual trip and remote trip" expansion time limit is widened to obtain the second-stage logic output.

[0066] The present invention also provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-described method when executing the computer program. A computer-readable storage medium having the computer program stored thereon is provided, wherein the computer program implements the steps of the above-described method when executed by the processor.

Claims

1. A method for automatically switching on a backup power supply suitable for a busbar with multiple incoming lines, wherein two busbar sections are provided, and the two busbar sections have multiple incoming lines, characterized in that: The discharge logic in the automatic switching logic of the backup power supply of the two bus sections includes: Perform a logical OR operation on the "manual trip / remote trip" input signals of all incoming lines in each bus section to obtain the first-stage logic output. Perform a logical AND operation on the first-stage logic output after the "manual trip / remote trip" expansion time limit is extended with the logic output of the single bus section voltage without pressure to obtain the second-stage logic output. If the incoming backup power supply is in automatic switching mode, perform a logical OR operation on the second-stage logic output of the single-section bus, the logic output of the trip position of the section circuit breaker, the logic output of the total blocking of automatic switching of the backup power supply, and the logic output of the logic negation of the soft pressure plate corresponding to the automatic switching of the backup power supply; If the automatic switching mode of the sectionalized backup power supply is used, the second-stage logic output of each bus section of the two bus sections is combined with the logic output of the logic negation of the trip position of the sectionalized circuit breaker, the logic output of the total blocking of the automatic switching of the backup power supply, and the logic output of the logic negation of the soft pressure plate corresponding to the automatic switching mode of the backup power supply. The section circuit breaker is used to control the power supply between the two bus sections; the backup power supply automatic start-up general lock is used to input a signal that does not allow the backup power supply to be automatically started; the soft pressure plate is a software setting for function start and stop.

2. The automatic switching-in method for backup power supply applicable to busbar multi-line input according to claim 1 is characterized in that: There are two ways to perform logical OR on the "manual trip and remote trip" input signals of all incoming lines: the first way is that when the backup power supply is automatically put into use and the terminal transmits the signal, the "manual trip and remote trip" closed contact signals of all incoming lines are connected in parallel to the "manual trip and remote trip" input terminals; the second way is that when the backup power supply is automatically put into use and GOOSE transmits the signal, the "manual trip and remote trip" GOOSE output signals of all incoming lines are logically ORed.

3. The automatic backup power supply input method applicable to busbar multi-way incoming lines according to claim 1 is characterized in that: The two bus sections are the first bus section and the second bus section, and the incoming line circuit breaker is used to control the power supply of each incoming line on the first bus section and the second bus section; the automatic standby power supply input mode includes automatic standby power supply input mode 1, 2, 3, and 4; the automatic standby power supply input mode includes automatic standby power supply input mode 1 and automatic standby power supply input mode 2; the automatic standby power supply input mode for segmented segments includes automatic standby power supply input mode 3 and automatic standby power supply input mode 4; The aforementioned automatic switching mode of the backup power supply is as follows: the sectional circuit breakers are in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the first section bus are in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the second section bus are in the tripped position. When the first section bus loses pressure, the incoming circuit breakers corresponding to all incoming lines of the second section bus are closed. This is the backup incoming circuit breaker of mode 1; The second automatic switching mode of the aforementioned backup power supply: the sectional circuit breaker is in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the second section bus are in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the first section bus are in the tripped position. When the second section bus loses pressure, the incoming circuit breakers corresponding to all incoming lines of the first section bus are closed. This is the backup incoming circuit breaker of mode 2; The third automatic switching mode of the aforementioned backup power supply: the sectionalizing circuit breaker trips, the incoming circuit breakers corresponding to all incoming lines of the first section busbar are in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the second section busbar are in the closed position. When the first section busbar loses pressure, the sectionalizing circuit breaker is closed; The fourth automatic switching mode of the aforementioned backup power supply: the section circuit breaker trips, the incoming circuit breakers corresponding to all incoming lines of the first section bus are in the closed position, and the incoming circuit breakers corresponding to all incoming lines of the second section bus are in the closed position. When the second section bus loses pressure, the section circuit breaker is closed.

4. The automatic switching-in method for backup power supply applicable to busbar multi-way incoming lines according to claim 3 is characterized in that: The charging logic in the automatic switching logic of the backup power supply is also included: If the incoming backup power supply is in automatic switching mode, the logical output of the logic negation of the section circuit breaker tripping, the logical output of the voltage of each busbar in the two sections, the logical output of the logic negation of the total blocking of the automatic switching of the backup power supply, and the logical output of the soft pressure plate corresponding to the automatic switching of the backup power supply are logically ANDed together, and then the output is delayed after the automatic charging of the backup power supply; If the automatic switching mode of the segmented backup power supply is used, the logic output of the segmented circuit breaker tripping, the logic output of the voltage of each bus section in the two bus sections, the logic output of the logic negation of the total lock of the automatic switching of the backup power supply, and the logic output of the soft pressure plate corresponding to the automatic switching mode of the backup power supply are logically ANDed together, and then output after the delay of the automatic charging of the backup power supply.

5. The automatic backup power supply input method applicable to busbar multi-line input according to claim 4 is characterized in that: The action logic of the automatic switching logic of the backup power supply is also included: If the incoming line backup power supply is in automatic switching mode, the charging logic output corresponding to the automatic switching mode of the backup power supply, the logic output of the no-voltage of each busbar in the two busbar sections, the logic output of the logical negation of the total blocking of the automatic switching of the backup power supply, and the logic output of the soft pressure plate corresponding to the automatic switching mode of the backup power supply are logically ANDed together, and then after the adjustable automatic switching action delay of the backup power supply, the backup incoming line circuit breaker in the automatic switching mode of the backup power supply is closed; If it is a segmented backup power supply automatic start-up mode, the charging logic output corresponding to the backup power supply automatic start-up mode, the logic output corresponding to the bus voltage no pressure in the backup power supply automatic start-up mode, the logic output corresponding to the bus voltage with pressure in the backup power supply automatic start-up mode, the logic output of the logic negation of the backup power supply automatic start-up total lockout, and the logic output of the soft pressure plate corresponding to the backup power supply automatic start-up mode are logically ANDed together, and then after the adjustable backup power supply automatic start-up action delay, the segmented circuit breaker is closed.

6. The automatic switching-in method for backup power supply applicable to busbar multi-line input according to claim 1 is characterized in that: The "manual trip and remote trip" input signal of the incoming line is formed by logically ORing the manual trip signal and the remote trip signal; the manual trip signal is generated by connecting the contact of the incoming line manual trip handle to the input terminal of the incoming line protection device, and the incoming line protection device collects this manual trip signal; the remote trip signal is a trip signal sent by the computer system and received by the incoming line protection device through communication; the incoming line protection device is a protection device located on the incoming line, which collects and controls the incoming line circuit breaker; the extension time limit is 200 milliseconds.

7. A backup power automatic input system suitable for busbar multi-way incoming lines, comprising two sections of busbars, each section of busbars having multiple incoming lines, characterized in that: The module also includes a discharge logic module in the automatic switching logic of the backup power supply: it is used to perform a logical OR operation on the "manual trip and remote trip" input signals of all incoming lines in each bus section to obtain the first-stage logic output; the first-stage logic output is subjected to a "manual trip and remote trip" extension time limit, and then the voltage of the single bus section is logically ANDed to obtain the second-stage logic output; If the incoming backup power supply is in automatic switching mode, perform a logical OR operation on the second-stage logic output of the single-section bus, the logic output of the trip position of the section circuit breaker, the logic output of the total blocking of automatic switching of the backup power supply, and the logic output of the logic negation of the soft pressure plate corresponding to the automatic switching of the backup power supply; If the automatic switching mode of the sectionalized backup power supply is used, the second-stage logic output of each bus section of the two bus sections is combined with the logic output of the logic negation of the trip position of the sectionalized circuit breaker, the logic output of the total blocking of the automatic switching of the backup power supply, and the logic output of the logic negation of the soft pressure plate corresponding to the automatic switching mode of the backup power supply. The section circuit breaker is used to control the power supply between the two bus sections; the backup power supply automatic start-up general lock is used to input a signal that does not allow the backup power supply to be automatically started; the soft pressure plate is a software setting for function start and stop.

8. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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