Power supply control circuit and power supply control method

Abstract

The embodiment of the application provides a power supply control circuit and a power supply control method, the circuit comprises: a bus tie switch circuit, an opposite side switch circuit, a local side switch circuit, the opposite side switch circuit comprises a first opposite side switch circuit and a second opposite side switch circuit. Wherein, the bus tie switch circuit and the opposite side switch circuit are connected in parallel, the output end of the bus tie switch circuit and the output end of the opposite side switch circuit are connected with the input end of the local side switch circuit. The output end of the local side switch circuit is connected with the input end of the first closing coil. The power supply control circuit and the power supply control method provided by the application can effectively realize the effect of one generator plus one city power load, can also realize the effect of one generator load, and can also realize the effect of one city power load, so that power failure can be avoided in the process of switching from city power load to generator load, thereby improving the power supply stability of the data center.

Description

Technical Field

[0001] This application relates to automatic control technology, and more particularly to a power supply control circuit and a power supply control method. Background Technology

[0002] As data centers grow larger and larger, their power demand also increases daily. There are generally two ways to power data centers: mains power and generator power.

[0003] Normally, data centers draw power from the mains. However, in scenarios involving power rationing or outages, generators can also supply power. Under the current architecture, it's impossible to simultaneously operate both mains power and generators. Therefore, in situations like power rationing, a brief power outage may occur during the switch from mains power to generator power, leading to lower power stability for the data center. Summary of the Invention

[0004] This application provides a power supply control circuit and a power supply control method to overcome the problem of power outages that may occur in data centers during the process of switching from mains power to generator power.

[0005] In a first aspect, embodiments of this application provide a power supply control circuit, which includes: a bus tie switch circuit, a counter-side switch circuit, a local-side switch circuit, and a first closing coil. The counter-side switch circuit includes a first counter-side switch circuit and a second counter-side switch circuit.

[0006] The first and second opposite-side switching circuits are connected in series.

[0007] The bus tie switch circuit and the opposite switch circuit are connected in parallel.

[0008] The parallel circuit formed by the bus tie switch circuit and the opposite side switch circuit is connected in series with the local side switch circuit.

[0009] The first closing coil is connected to the output terminal of the local switching circuit, or the first closing coil is connected to the output terminal of the parallel circuit.

[0010] In one possible design, when the bus tie cabinet is tripped, the bus tie switch circuit is turned on; and when the bus tie cabinet is closed, the bus tie switch circuit is turned off.

[0011] In one possible design, when the opposite side mains power incoming cabinet is tripped, the first opposite side switching circuit is turned on; and when the opposite side mains power incoming cabinet is closed, the first opposite side switching circuit is turned off.

[0012] In one possible design, when the opposite generator incoming line cabinet is tripped, the second opposite-side switching circuit is turned on; and when the opposite generator incoming line cabinet is closed, the second opposite-side switching circuit is turned off.

[0013] In one possible design, the first closing coil is energized when the bus tie switch circuit and the local switch circuit are both closed; or...

[0014] When the first opposite-side switch circuit is turned on, the second opposite-side switch circuit is turned on, and the local-side switch circuit is turned on, the first closing coil is energized.

[0015] In one possible design, when the generator incoming line cabinet on this side is tripped, the local switching circuit is turned on; and when the generator incoming line cabinet on this side is closed, the local switching circuit is turned off.

[0016] When the first closing coil is energized, the mains power incoming cabinet on this side closes.

[0017] In one possible design, when the mains power incoming cabinet on this side is tripped, the local switching circuit is turned on; and when the mains power incoming cabinet on this side is closed, the local switching circuit is turned off.

[0018] When the first closing coil is energized, the generator incoming line cabinet on this side closes.

[0019] In one possible design, the circuit further includes: a first mains power switch circuit, a second mains power switch circuit, a first generator switch circuit, and a second generator switch circuit;

[0020] The first mains power switch circuit and the first generator switch circuit are connected in series to form a first series circuit;

[0021] The second mains power switch circuit and the second generator switch circuit are connected in series to form a second series circuit;

[0022] The first series circuit and the second series circuit are connected in parallel.

[0023] In one possible design, the circuit further includes: a second closing coil;

[0024] The second closing coil is connected to the output terminal of the parallel circuit formed by the first series circuit and the second series circuit.

[0025] In one possible design, the second closing coil is energized when the first mains switch circuit and the first generator switch circuit are both turned on; or...

[0026] When the second mains switch circuit is turned on and the second generator switch circuit is turned on, the second closing coil is energized;

[0027] When the second closing coil is energized, the bus tie cabinet closes.

[0028] Secondly, embodiments of this application provide a power supply control method, the method comprising:

[0029] Obtain the switch status of the bus tie cabinet, the switch status of the mains incoming cabinet on the opposite side, the switch status of the generator incoming cabinet on the opposite side, and the switch status of the first local incoming cabinet;

[0030] Based on the switching status of the bus tie cabinet, the switching status of the opposite mains power incoming cabinet, the switching status of the opposite generator incoming cabinet, and the switching status of the first local incoming cabinet, the second local incoming cabinet is controlled to close.

[0031] In one possible design, controlling the closing of the second local incoming line cabinet based on the switching status of the bus tie cabinet, the switching status of the opposite mains incoming line cabinet, the switching status of the opposite generator incoming line cabinet, and the switching status of the first local incoming line cabinet includes:

[0032] If the switch status of the bus tie cabinet is open, and the switch status of the first local incoming line cabinet is open, then control the second local incoming line cabinet to close; or,

[0033] If the switch status of the opposite side mains incoming cabinet is open, the switch status of the opposite side generator incoming cabinet is open, and the switch status of the first local incoming cabinet is open, then control the second local incoming cabinet to close.

[0034] In one possible design, the first local incoming line cabinet is the local generator incoming line cabinet, and the second local incoming line cabinet is the local mains power incoming line cabinet.

[0035] In one possible design, the first local incoming line cabinet is the local mains power incoming line cabinet, and the second local incoming line cabinet is the local generator incoming line cabinet.

[0036] Thirdly, embodiments of this application provide a power supply control device, the device comprising:

[0037] The acquisition module is used to acquire the switch status of the bus tie cabinet, the switch status of the mains incoming cabinet on the opposite side, the switch status of the generator incoming cabinet on the opposite side, and the switch status of the first local incoming cabinet.

[0038] The processing module is used to control the second local incoming line cabinet to close based on the switch status of the bus tie cabinet, the switch status of the opposite mains incoming line cabinet, the switch status of the opposite generator incoming line cabinet, and the switch status of the first local incoming line cabinet.

[0039] In one possible design, the processing module is specifically used for:

[0040] If the switch status of the bus tie cabinet is open, and the switch status of the first local incoming line cabinet is open, then control the second local incoming line cabinet to close; or,

[0041] If the switch status of the opposite side mains incoming cabinet is open, the switch status of the opposite side generator incoming cabinet is open, and the switch status of the first local incoming cabinet is open, then control the second local incoming cabinet to close.

[0042] In one possible design, the first local incoming line cabinet is the local generator incoming line cabinet, and the second local incoming line cabinet is the local mains power incoming line cabinet.

[0043] In one possible design, the first local incoming line cabinet is the local mains power incoming line cabinet, and the second local incoming line cabinet is the local generator incoming line cabinet.

[0044] Fourthly, embodiments of this application provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method described in the second aspect above.

[0045] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the method described in the second aspect above.

[0046] The power supply control circuit and power supply control method provided in this application embodiment can effectively achieve the effect of one generator plus one mains power supply, or one generator and one mains power supply. Therefore, during the process of switching from mains power supply to generator power supply, it can effectively achieve a single-path load or a generator plus mains power supply combination, thereby effectively avoiding the phenomenon of dual power outages during the process of switching from mains power supply to generator power supply, thus improving the power supply stability of the data center. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A schematic diagram of the power supply architecture provided in the embodiments of this application;

[0049] Figure 2A A logic diagram illustrating the closing of the mains power incoming switchgear provided in an embodiment of this application;

[0050] Figure 2B A logic diagram illustrating the closing of the diesel generator incoming line cabinet provided in an embodiment of this application;

[0051] Figure 3 A logic diagram illustrating the closing of the bus tie cabinet provided in this application embodiment;

[0052] Figure 4 This is a schematic diagram of the power supply control circuit provided in an embodiment of this application;

[0053] Figure 5 Schematic diagram 2 of the power supply control circuit provided in the embodiments of this application;

[0054] Figure 6 A logic diagram illustrating the local mains power supply enabling closing, provided for an embodiment of this application;

[0055] Figure 7 Schematic diagram of the power supply control circuit provided in the embodiments of this application Figure 3 ;

[0056] Figure 8 A logic diagram illustrating the permission for closing of the local generator provided in this application embodiment;

[0057] Figure 9 A schematic diagram of the power supply circuit provided in the embodiments of this application. Figure 4 ;

[0058] Figure 10 Schematic diagram of the power supply control circuit provided in the embodiments of this application Figure 4 ;

[0059] Figure 11 A logic diagram illustrating the permission for closing of the bus tie cabinet provided in an embodiment of this application;

[0060] Figure 12 A schematic diagram of another power supply architecture provided in the embodiments of this application;

[0061] Figure 13 A schematic diagram of the circuit structure for closing the mains power supply on this side, provided for an embodiment of this application;

[0062] Figure 14 A schematic diagram of the circuit structure for closing the generator on this side, provided for an embodiment of this application;

[0063] Figure 15 A flowchart of the power supply control method provided in the embodiments of this application. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0065] To better understand the technical solution of this application, the relevant technologies involved in this application will be further described in detail below.

[0066] As the number and scale of data centers increase, their electricity demand also grows daily. Data centers are typically powered by mains electricity, also known as industrial frequency alternating current.

[0067] However, with the continuous increase in electricity load at the societal level, and in order to balance the electricity demand from different aspects, data centers with relatively large electricity demand often need to implement power rationing, that is, restrict the power resources that data centers can obtain from the municipal power grid.

[0068] Understandably, although data centers need to implement power rationing, their own power demand still exists. Therefore, to fill the power gaps in data centers, generators are often needed to supplement them. In other words, generators supply power to data centers to ensure that their power needs are met and thus guarantee their normal operation. These generators can be, for example, diesel generators, or any other possible generators; this embodiment does not impose any restrictions.

[0069] In practice, 100% power limiting is generally not required; instead, a partial load limiting scheme is usually adopted. Under the current circuit architecture, it is impossible to operate with both mains power and generators simultaneously. In other words, when powering a data center, it must be powered either by mains power or by a generator; simultaneous supply of both is not possible.

[0070] For example, it can be combined Figure 1 Understand the current circuit architecture, Figure 1 This is a schematic diagram of a power supply architecture provided in an embodiment of this application.

[0071] like Figure 1 As shown, taking a diesel generator as an example, Figure 1 The diagram illustrates the data center's power supply architecture, specifically a dual-path mains power supply plus a medium-voltage busbar tie. Additionally, each mains power input has an emergency power input from a diesel generator set. Figure 1 The diagram shows five incoming line switches to ensure medium-voltage power supply to the data center; these incoming line switches can also be understood as incoming line cabinets.

[0072] Specifically, Figure 1 The diagram shows the switches for one mains power input line, one diesel generator input line, two diesel generator input lines, two mains power input lines, and the switch for the medium-voltage bus tie.

[0073] And, the switch for the diesel generator incoming line and the connection to the diesel generator set, Figure 1 The G shown in the diagram represents a diesel generator.

[0074] exist Figure 1 Based on this, let's combine Figure 2 and... Figure 3 To understand the current switching logic of mains power and diesel generator. Figure 2A This is a logic diagram illustrating the closing of the mains power incoming switch provided in an embodiment of this application. Figure 2B This is a logic diagram illustrating the closing of the diesel generator incoming line switch provided in an embodiment of this application. Figure 3 This is a logic diagram illustrating the closing of the bus tie cabinet provided in an embodiment of this application.

[0075] First, it should be noted that current architectures are typically dual-path, resulting in two mains power supplies and two generators. For clarity, the following explanation will use a diesel generator as an example. In this embodiment, the two mains power supplies will be referred to as the "local mains power supply" and the "reverse mains power supply," and the two generators will be referred to as the "local diesel generator" and the "reverse diesel generator." However, "local" and "reverse" are relative terms; that is, there is no specific restriction on which power supply is designated as the "local" and which as the "reverse." Any power supply can be considered the "local," and the remaining power supply will automatically become the "reverse."

[0076] For example, in the above example, if we understand circuit 1 as the local mains power, then circuit 2 is the opposite mains power. Similarly, if we understand circuit 2 as the local mains power, then circuit 1 is the opposite mains power. Diesel generators operate similarly, and will not be elaborated further here.

[0077] First refer to Figure 2A , Figure 2A The diagram shows the interlocking logic for allowing the mains power to close. It can be understood that the mains power can only supply power to the corresponding load when the corresponding incoming line cabinet is closed.

[0078] Reference Figure 2A When the bus tie is tripped, the local diesel generator is tripped, and the opposite diesel generator is tripped, the local mains power is allowed to be closed; or, when the opposite mains power incoming cabinet is tripped, the local diesel generator is tripped, and the opposite diesel generator is tripped, the local mains power is allowed to be closed.

[0079] Then refer to Figure 2A It is certain that for the mains power incoming cabinet on this side to be closed, the incoming cabinets of the diesel generator on this side and the diesel generator on the opposite side must be in the open state. In other words, it is impossible to close the mains power and diesel generator incoming cabinets at the same time.

[0080] In this context, "closing" means the switch is closed, and "opening" means the switch is open. The aforementioned "opening" of the mains power incoming cabinet can refer to the mains power incoming cabinet being in an open state, or the "opening" of the diesel generator incoming cabinet being in an open state. The bus tie is the connection between two busbars. Its function is to connect the connecting switches of two distribution busbars when one mains power line is interrupted, ensuring that both distribution busbars are supplied with power normally.

[0081] as well as, Figure 2B The diagram shows the interlocking logic for allowing the diesel generator to close. It can be understood that the diesel generator can only supply power to the corresponding load when the corresponding incoming line cabinet is closed.

[0082] Reference Figure 2B When the bus tie is tripped, the mains power supply cabinet on this side is tripped, and the mains power supply cabinet on the opposite side is tripped, the diesel generator on this side is allowed to be closed; or, when the diesel generator on the opposite side is tripped, the mains power supply cabinet on this side is tripped, and the mains power supply cabinet on the opposite side is tripped, the diesel generator on this side is allowed to be closed.

[0083] Then refer to Figure 2B It is certain that for the incoming switch of the diesel generator on this side to be closed, the incoming switch of the mains power supply on this side and the incoming switch of the mains power supply on the opposite side must be in the open state. In other words, it is impossible to close the incoming switch of the diesel generator and the mains power supply at the same time.

[0084] Next, let's combine... Figure 3 The logic of the bus joint switch is explained, where the bus joint switch usually refers to the closing of the bus joint cabinet.

[0085] like Figure 3 As shown, the bus tie is allowed to be closed when either the mains power supply on this side or the mains power supply on the opposite side is open, or when either the diesel generator on this side or the diesel generator on the opposite side is open. That is to say, the following situations exist: When both the mains power supply cabinet and the diesel generator on this side are open, the bus tie is allowed to be closed; when both the mains power supply cabinet and the diesel generator on the opposite side are open, the bus tie is allowed to be closed; when both the mains power supply cabinet and the diesel generator on this side are open, the bus tie is allowed to be closed; when both the mains power supply cabinet and the diesel generator on the opposite side are open, the bus tie is allowed to be closed.

[0086] However, based on the above, it can be confirmed that the mains power and the diesel generator cannot be switched on simultaneously. Therefore, whether the bus tie switch can be switched on depends only on the logic of the mains power incoming switch. After the diesel generator is switched on, the bus tie cannot operate.

[0087] Based on the above introduction, it can be determined that under the existing circuit architecture, mains power and diesel generator cannot be used for simultaneous load.

[0088] When implementing power rationing, it may be necessary to switch the load on the restricted load from mains power to generator power. Since mains power and generators cannot be used simultaneously, this may cause a short-term dual power outage for this load, which could pose a significant risk to the data center.

[0089] To address the aforementioned technical issues, this application proposes the following technical concept: a seamless switching from mains power to generator is required. During this seamless switching process, it is necessary to enable scenarios where both mains power and generator can be used simultaneously, thereby reducing the impact of power source changes on the data center.

[0090] Based on the above introduction, the power supply control circuit provided in this application will be described in detail below. First, in conjunction with... Figure 4 To explain, Figure 4 This is a schematic diagram of the power supply control circuit provided in an embodiment of this application.

[0091] like Figure 4 As shown, the control circuit in this embodiment includes: bus tie switch circuit 10, opposite side switch circuit 20, local side switch circuit 30 and first closing coil 40, wherein the opposite side switch circuit 20 includes a first opposite side switch circuit 21 and a second opposite side switch circuit 22.

[0092] The following is a combination of... Figure 4 The connection relationships of the various circuit parts in the control circuit of this embodiment are explained.

[0093] like Figure 4 As shown, the first opposite-side switch circuit 21 and the second opposite-side switch circuit 22 are connected in series, and the bus tie switch circuit 10 and the opposite-side switch circuit 20 are connected in parallel.

[0094] Furthermore, the bus tie switch circuit 10 and the opposite switch circuit 20 are connected in parallel, and the parallel circuit formed by the bus tie switch circuit 10 and the opposite switch circuit 20 is connected in series with the local switch circuit 30.

[0095] Additionally, the first closing coil 40 is connected to the output terminal of the local switching circuit 30, or the first closing coil 40 is connected to the output terminal of the parallel circuit formed by the bus tie switching circuit 10 and the opposite switching circuit 20.

[0096] exist Figure 4 In the scenario shown, the first closing coil 40 is connected to the output terminal of the local switching circuit 30. However, it is understandable that... Figure 4The parallel circuit shown and the local switch circuit 30 are connected in series. The order of these two circuit parts can be interchanged. If the order of these two circuit parts is interchanged, then the output terminal of the parallel circuit formed by the first closing coil 40, the bus tie switch circuit 10, and the opposite switch circuit 20 is connected.

[0097] Based on the circuit connection relationship described above, the function of each circuit part in the control circuit will be introduced below.

[0098] In this embodiment, the bus tie switch circuit 10 can be connected to the bus tie cabinet, wherein the open or closed state of the bus tie cabinet can control the connection or disconnection of the bus tie switch circuit.

[0099] In one possible implementation, the bus tie switch circuit is turned on when the bus tie cabinet is tripped; and the bus tie switch circuit is turned off when the bus tie cabinet is closed.

[0100] For example, when the bus tie cabinet trips, the bus tie switch circuit can receive the trip signal from the bus tie cabinet, and then control the bus tie switch circuit to reconnect based on the trip signal. The trip signal can be transmitted, for example, through the connection between the bus tie switch circuit and the bus tie cabinet. Alternatively, in another possible implementation, the bus tie switch circuit in this embodiment can also have a receiving device for signal reception, which can wirelessly receive the trip signal from the bus tie cabinet. The other switch circuits are similar.

[0101] In this embodiment, the first opposite-side switch circuit 21 can be connected to the opposite-side mains power supply cabinet, wherein the open or closed state of the opposite-side mains power supply cabinet can control the connection or disconnection of the first opposite-side switch circuit.

[0102] Specifically, when the opposite side mains power incoming cabinet is tripped, the first opposite side switch circuit is connected; and when the opposite side mains power incoming cabinet is closed, the first opposite side switch circuit is disconnected.

[0103] In this embodiment, the second opposite-side switch circuit 22 is connected to the opposite-side generator incoming line cabinet, wherein the open or closed state of the opposite-side generator incoming line cabinet can control the connection or disconnection of the second opposite-side switch circuit.

[0104] Specifically, when the generator incoming line cabinet on the opposite side is tripped, the second opposite-side switch circuit is connected; and when the generator incoming line cabinet on the opposite side is closed, the second opposite-side switch circuit is disconnected.

[0105] Based on the above description, it can be determined that since current circuits are all dual-path, this embodiment distinguishes between the "this side" and the "opposite side" for ease of explanation. However, in reality, "this side" and "opposite side" are relative and do not specifically refer to a particular path. For example, any one path can be designated as the "this side," and the remaining path is automatically called the "opposite side."

[0106] In this embodiment, both the mains power and the generator are dual-path, thus there is a local mains power, a local generator, a counterpart mains power, and a counterpart generator.

[0107] based on Figure 4 It can be determined that if the bus tie switch circuit is connected and the switch circuit on this side is connected, the first closing coil can be energized, and the incoming cabinet corresponding to the first closing coil can be closed to carry out the corresponding load.

[0108] And because the circuit itself is already connected in this situation, it is not important whether the switch circuit on the other side is connected. That is to say, the mains power supply cabinet on the other side can be closed (at this time, the first switch circuit on the other side is open), or the generator power supply cabinet on the other side can be closed (at this time, the second switch circuit on the other side is open).

[0109] For example, in this situation, the incoming power cabinet on the opposite side closes, and the incoming power cabinet corresponding to the first closing coil closes. For example, if the incoming power cabinet corresponding to the first closing coil is the generator incoming power cabinet on this side, then the effect of the mains power and the generator being loaded at the same time can be achieved; or if the incoming power cabinet corresponding to the first closing coil is the mains power incoming power cabinet on this side, then the effect of the dual mains power being loaded at the same time can be achieved.

[0110] Alternatively, the situation could be that the generator incoming cabinet on the opposite side closes, and the incoming cabinet corresponding to the first closing coil closes. For example, if the incoming cabinet corresponding to the first closing coil is the generator incoming cabinet on this side, the effect of two generators being simultaneously loaded can be achieved; or if the incoming cabinet corresponding to the first closing coil is the mains power incoming cabinet on this side, the effect of mains power and generator being simultaneously loaded can be achieved.

[0111] and based on Figure 4 It can also be determined that if the first opposite-side switch circuit is turned on, the second opposite-side switch circuit is turned on, and the local-side switch circuit is turned on, then the first closing coil can be energized. At this time, the incoming cabinet corresponding to the first closing coil can be closed to carry out the corresponding load.

[0112] And because the circuit itself is already connected under these conditions, whether the bus tie switch circuit is connected or not is irrelevant; that is, the bus tie cabinet can be closed (at which point the bus tie switch circuit is open). The adjacent mains power supply cabinet, the adjacent generator power supply cabinet, and the power supply cabinet corresponding to the first local switch circuit are all open. Only the power supply cabinet corresponding to the first closing coil is closed. For example, the power supply cabinet corresponding to the first closing coil could be the local mains power supply cabinet, or it could also be the local diesel generator power supply cabinet. In either case, the effect of single-circuit load-carrying for the entire section can be achieved.

[0113] Therefore, based on the above description, it can be determined that the power supply control circuit provided in this application can effectively achieve the effect of one generator plus one mains power supply, or one generator and one mains power supply. Therefore, during the process of switching from mains power supply to generator power supply, it can effectively achieve a single-path load or a generator plus mains power combined load power supply mode, thereby effectively avoiding the phenomenon of dual power outages during the process of switching from mains power supply to generator power supply, so as to improve the power supply stability of the data center.

[0114] Based on the above description, it can be determined that the local switching circuit can determine whether to connect or disconnect based on the status of the local generator incoming cabinet, or the local switching circuit can determine whether to connect or disconnect based on the status of the local mains incoming cabinet. Furthermore, the first closing coil can close either the local generator incoming cabinet or the local mains incoming cabinet. Different combinations can produce different closing controls; therefore, the possible implementation methods will be described in detail below.

[0115] In one possible implementation, the local switching circuit can be connected to the local generator incoming line cabinet. Specifically, when the local generator incoming line cabinet is open, the local switching circuit is closed; and when the local generator incoming line cabinet is closed, the local switching circuit is open. Furthermore, when the first closing coil is energized, the local mains incoming line cabinet closes.

[0116] In this combination, for example, it can be combined with Figure 5 Understand the relationships within the circuit structure. Figure 5 A second schematic diagram of the power supply control circuit provided in the embodiments of this application, and Figure 6 This is a logic diagram illustrating the local mains power supply enabling closing, provided as an embodiment of this application.

[0117] like Figure 5 As shown, the control circuit in this embodiment includes: a bus tie switch circuit 10, a counter-side switch circuit 20, a local-side switch circuit 30, and a first closing coil 40. The counter-side switch circuit 20 includes a first counter-side switch circuit 21 and a second counter-side switch circuit 22. The implementation of each circuit part is similar to that described above, and will not be repeated here.

[0118] The function of the circuit section in this embodiment will be further described below. Figure 5In the diagram, when the bus tie switch is tripped, bus tie switch circuit 10 is connected; otherwise, bus tie switch circuit 10 is disconnected. Similarly, when the opposite mains power incoming switch is tripped, the first opposite-side switch circuit 21 is connected; otherwise, the first opposite-side switch circuit 21 is disconnected. When the opposite generator incoming switch is tripped, the second opposite-side switch circuit 22 is connected; otherwise, the second opposite-side switch circuit 22 is disconnected. Finally, when the local generator incoming switch is tripped, local switch circuit 30 is connected; otherwise, local switch circuit 30 is disconnected.

[0119] exist Figure 5 The diagram also shows that the metering cabinet on this side is isolated from the mains power supply line on this side. This can be understood as the corresponding circuit being connected, so it does not need to be considered.

[0120] exist Figure 5 On this basis, Figure 6 The mains incoming line closing logic under the current combination is further illustrated below. Figure 5 and Figure 6 This section describes two scenarios where the output power supply cabinet on this side signals that closing is permitted:

[0121] One scenario is: the bus tie switch is tripped, then... Figure 5 The bus tie switch circuit 10 is connected; and the generator incoming line cabinet on this side is tripped. Figure 5 When the local switch circuit 30 is connected, the first closing coil 40 is energized when the bus tie switch circuit 10 and the local switch circuit 30 are connected. In this embodiment, the energization of the first closing coil can enable the local mains power incoming cabinet to close.

[0122] And corresponding to Figure 6 The implementation logic is that when the bus tie cabinet and the generator incoming cabinet on this side are tripped, the mains incoming cabinet on this side is allowed to be closed.

[0123] Understandably, in this situation, the circuit itself is already connected, so whether the first opposite-side switch circuit 21 and the second opposite-side switch circuit 22 are connected is irrelevant. That is to say, the opposite-side mains power incoming cabinet can be closed (at which time the first opposite-side switch circuit 21 is open), or the opposite-side generator incoming cabinet can be closed (at which time the second opposite-side switch circuit 22 is open).

[0124] For example, the incoming line cabinet of the opposite side of the mains power circuit can be switched on, and the incoming line cabinet of the mains power circuit on this side can be switched off, which corresponds to the situation of dual mains power supply under load.

[0125] Alternatively, it could be the closing of the generator incoming line cabinet on the opposite side and the closing of the mains incoming line cabinet on this side, which corresponds to a situation where one mains power supply and one generator are under load.

[0126] And another scenario is: if the mains power incoming cabinet on the opposite side trips, then... Figure 5 The first opposite-side switch circuit 21 is connected; and the opposite-side generator incoming line cabinet is tripped. Figure 5 The second opposite-side switch circuit 22 is connected; and the generator incoming line cabinet on this side is tripped. Figure 5 The local switch circuit 30 is turned on. When the first opposite switch circuit 21, the second opposite switch circuit 22, and the local switch circuit 30 are turned on, the first closing coil 40 is energized. In this embodiment, the energization of the first closing coil can cause the local mains power incoming cabinet to close.

[0127] And corresponding to Figure 6 The implementation logic is that when the mains power supply cabinet on the opposite side is tripped, the generator power supply cabinet on the opposite side is tripped, and the generator power supply cabinet on this side is tripped, the mains power supply on this side is allowed to be closed.

[0128] Understandably, in this situation, the circuit itself is already connected, so whether the bus tie switch circuit 10 is connected is irrelevant. In other words, the bus tie cabinet can be closed (at this time, the bus tie switch circuit 10 is disconnected).

[0129] In this scenario, meaning only the bus tie cabinet and the local mains power incoming cabinet are closed, it corresponds to a single mains power supply under load. Furthermore, closing the bus tie cabinet at this time ensures normal power supply to both distribution busbars.

[0130] Based on the above introduction, it can be determined that the power supply control circuit designed in this embodiment can effectively realize various scenarios such as dual-path mains power supply, one-path mains power supply plus one-path generator power supply, and single-path mains power supply by controlling the closing or opening of the bus tie cabinet and the corresponding incoming line cabinet. Therefore, it can effectively achieve seamless switching according to the actual situation during the switching process from mains power to generator and from generator back to mains power, thereby avoiding dual-path power failure in the data center and effectively improving the power supply stability of the data center.

[0131] Furthermore, in one possible implementation, the local switching circuit can be connected to the local mains power incoming cabinet. Specifically, when the local mains power incoming cabinet is open, the local switching circuit is closed; and when the local mains power incoming cabinet is closed, the local switching circuit is open. Additionally, when the first closing coil is energized, the local generator incoming cabinet closes.

[0132] In this combination, for example, it can be combined with Figure 7 Understand the relationships within the circuit structure. Figure 7 Schematic diagram of the power supply control circuit provided in the embodiments of this application Figure 3 ,as well as Figure 8 This is a logic diagram illustrating the permission to close the local generator, provided as an embodiment of this application.

[0133] like Figure 7 As shown, the control circuit in this embodiment includes: a bus tie switch circuit 10, a counter-side switch circuit 20, a local-side switch circuit 30, and a first closing coil 40. The counter-side switch circuit 20 includes a first counter-side switch circuit 21 and a second counter-side switch circuit 22. The implementation of each circuit part is similar to that described above, and will not be repeated here.

[0134] The function of the circuit section in this embodiment will be further described below. Figure 7 In the diagram, when the bus tie switch cabinet is tripped, bus tie switch circuit 10 is connected; otherwise, bus tie switch circuit 10 is disconnected. Similarly, when the opposite mains power incoming switch cabinet is tripped, the first opposite-side switch circuit 21 is connected; otherwise, the first opposite-side switch circuit 21 is disconnected. When the opposite generator incoming switch cabinet is tripped, the second opposite-side switch circuit 22 is connected; otherwise, the second opposite-side switch circuit 22 is disconnected. Finally, when the local mains power incoming switch cabinet is tripped, local-side switch circuit 30 is connected; otherwise, local-side switch circuit 30 is disconnected.

[0135] exist Figure 7 On this basis, Figure 8 The generator incoming line closing logic under the current combination is further illustrated below. Figure 7 and Figure 8 This section describes two scenarios where the output signal from the generator incoming line cabinet on this side allows closing:

[0136] One scenario is: the bus tie switch is tripped, then... Figure 7 The bus tie switch circuit 10 in the middle is connected; and the mains power incoming cabinet on the opposite side is tripped. Figure 7 When the local switch circuit 30 is connected, the first closing coil 40 is energized when the bus tie switch circuit 10 and the local switch circuit 30 are connected. In this embodiment, the energization of the first closing coil can enable the local generator incoming line cabinet to close.

[0137] And corresponding to Figure 8 The implementation logic is that when the bus tie cabinet and the local mains power incoming cabinet are tripped, the local generator incoming cabinet is allowed to be closed.

[0138] Understandably, in this situation, the circuit itself is already connected, so whether the first opposite-side switch circuit 21 and the second opposite-side switch circuit 22 are connected is irrelevant. That is to say, the opposite-side mains power incoming cabinet can be closed (at which time the first opposite-side switch circuit 21 is open), or the opposite-side generator incoming cabinet can be closed (at which time the second opposite-side switch circuit 22 is open).

[0139] For example, it could be the closing of the generator incoming line cabinet on the opposite side, or the closing of the generator incoming line cabinet on this side, which corresponds to the situation of dual generators under load.

[0140] Alternatively, it could mean that the mains power supply cabinet on the opposite side can be closed, as can the generator power supply cabinet on this side, which corresponds to a situation where one mains power supply and one generator are under load.

[0141] And another scenario is: if the mains power incoming cabinet on the opposite side trips, then... Figure 7 The first opposite-side switch circuit 21 is connected; and the opposite-side generator incoming line cabinet is tripped. Figure 7 The second opposite-side switch circuit 22 is connected; and the opposite-side mains power incoming cabinet is tripped. Figure 7 The local switch circuit 30 is turned on. When the first opposite switch circuit 21, the second opposite switch circuit 22, and the local switch circuit 30 are turned on, the first closing coil 40 is energized. In this embodiment, the energization of the first closing coil can cause the local generator incoming line cabinet to close.

[0142] And corresponding to Figure 8 The implementation logic is that when the generator incoming cabinet on the opposite side is tripped, the mains power incoming cabinet on the opposite side is tripped, and the mains power incoming cabinet on this side is tripped, the generator incoming cabinet on this side is allowed to be closed.

[0143] Understandably, in this situation, the circuit itself is already connected, so whether the bus tie switch circuit 10 is connected is irrelevant. In other words, the bus tie cabinet can be closed (at this time, the bus tie switch circuit 10 is disconnected).

[0144] In this scenario, meaning only the bus tie cabinet and the incoming line cabinet of the generator circuit on this side are closed, it corresponds to a single generator under load. Furthermore, closing the bus tie cabinet at this time ensures normal power supply to both distribution busbars.

[0145] Based on the above introduction, it can be determined that the power supply control circuit designed in this embodiment can effectively realize various scenarios such as dual-path generator load, one-path mains power load plus one-path generator load, and single-path generator load by controlling the closing or opening of the bus tie cabinet and the corresponding incoming line cabinet. Therefore, it can effectively achieve seamless switching according to the actual situation during the switching process from mains power to generator and from generator back to mains power, thereby avoiding dual-path power failure in the data center and effectively improving the power supply stability of the data center.

[0146] It is understandable that the above describes the implementation logic of closing the mains power incoming switchgear on this side, as well as the implementation logic of closing the generator incoming switchgear on this side. Based on the above description, it can be determined that the actual implementation circuit of closing the mains power incoming switchgear on this side (for example, referring to...) Figure 5), and the circuit for closing the generator incoming line cabinet on this side (for example, refer to Figure 7 These are different. Therefore, in actual implementation, a separate control circuit is designed for closing the mains incoming cabinet on this side, and another control circuit is designed for closing the generator incoming cabinet on this side. These two control circuits are independent. However, it is also important to understand that the bus tie cabinet, the generator incoming cabinet on this side, the mains incoming cabinet on this side, the generator incoming cabinet on the opposite side, and the mains incoming cabinet on the opposite side are all the same; the only difference is that the two control circuits obtain the tripping signal separately from these incoming cabinets.

[0147] It is also important to understand that if the mains power and the generator are connected in parallel, it may lead to a large-scale circuit failure. Furthermore, when mains power from different sources is looped together—that is, when the mains power on this side and the mains power on the other side are looped together—the circuit will also fail. To avoid this failure, this embodiment further incorporates control logic for closing the bus tie cabinet.

[0148] The following can be combined Figure 9 To understand, Figure 9 A schematic diagram of the power supply circuit provided in the embodiments of this application. Figure 4 .

[0149] like Figure 9 As shown, the power supply circuit provided in this application embodiment further includes: a first mains switch circuit 50, a second mains switch circuit 60, a first generator switch circuit 70, a second generator switch circuit 80, and a second closing coil 90.

[0150] The first mains switch circuit 50 and the first generator switch circuit 70 are connected in series to form a first series circuit. The second mains switch circuit 60 and the second generator switch circuit 80 are connected in series to form a second series circuit. The first series circuit and the second series circuit are connected in parallel.

[0151] Furthermore, the second closing coil 90 is connected to the output terminal of the parallel circuit formed by the first series circuit and the second series circuit.

[0152] Based on the circuit connection relationship described above, the function of each circuit part in the control circuit will be introduced below.

[0153] In this embodiment, the first mains power switch circuit 50 is connected, for example, to the local mains power incoming cabinet. When the local mains power incoming cabinet is open, the first mains power switch circuit 50 is turned on; and when the local mains power incoming cabinet is closed, the first mains power switch circuit 50 is turned off.

[0154] Furthermore, the second mains power switch circuit 60 is connected, for example, to the opposite mains power incoming cabinet, wherein when the opposite mains power incoming cabinet is open, the second mains power switch circuit 60 is turned on; and when the opposite mains power incoming cabinet is closed, the second mains power switch circuit 60 is turned off.

[0155] The first generator switch circuit 70 is connected, for example, to the generator incoming cabinet on this side. When the generator incoming cabinet on this side is open, the first generator switch circuit 70 is turned on; and when the generator incoming cabinet on this side is closed, the first generator switch circuit 70 is turned off.

[0156] In addition, the second generator switch circuit 80 is connected, for example, to the generator incoming cabinet on the opposite side, wherein when the generator incoming cabinet on the opposite side is open, the second generator switch circuit 80 is turned on; and when the generator incoming cabinet on the opposite side is closed, the second generator switch circuit 80 is turned off.

[0157] based on Figure 9 It can be determined that if the mains power incoming cabinet on this side is tripped, then the first mains power switch circuit 50 will be connected, and if the generator incoming cabinet on this side is tripped, then the first generator switch circuit 70 will be connected. At this time, the second closing coil can be energized, so that the bus tie cabinet can be closed.

[0158] Alternatively, if the mains power incoming cabinet on the opposite side trips, then the second mains power switch circuit 60 will be connected; and if the generator incoming cabinet on the opposite side trips, then the second generator switch circuit 80 will be connected. At this time, the second closing coil can be energized, causing the bus tie cabinet to close.

[0159] Based on the above embodiments, it can be determined that the bus tie cabinet can only be closed in the two situations mentioned above. Therefore, the bus tie cabinet is not allowed to be closed in the following situations.

[0160] 1. The mains power incoming cabinet on this side and the mains power incoming cabinet on the opposite side can be closed, but the bus tie cabinet is not allowed to be closed.

[0161] Under normal circumstances, the mains power supply cabinets on both sides can be switched on simultaneously, corresponding to a dual-circuit mains power supply load. However, in this case, the bus tie cabinet is not allowed to be switched on, thus preventing the loop from forming between mains power sources from different origins.

[0162] 2. The generator incoming line cabinet on this side and the generator incoming line cabinet on the opposite side can be closed, but the bus tie cabinet is not allowed to be closed.

[0163] It is understandable that the generator incoming line cabinet on this side and the generator incoming line cabinet on the opposite side can be closed simultaneously, which corresponds to the situation of dual generators under load. However, in this case, the bus tie cabinet is not allowed to be closed, thus avoiding the situation of closed loop between generators from different sources.

[0164] 3. The mains power incoming cabinet on this side and the generator incoming cabinet on the opposite side must be closed. The bus tie cabinet is not allowed to be closed.

[0165] It's understandable that the mains power supply cabinet on this side and the generator power supply cabinet on the opposite side can be switched on simultaneously, which corresponds to a situation where one mains power supply and one generator are running under load. However, in this case, the bus tie cabinet is not allowed to be switched on, thus avoiding the parallel connection between the mains power supply and the generator.

[0166] 4. The generator incoming line cabinet on this side and the mains incoming line cabinet on the opposite side should be closed, but the bus tie cabinet should not be closed.

[0167] It's understandable that the generator incoming line cabinet on this side and the mains incoming line cabinet on the opposite side can be closed simultaneously, which corresponds to a situation where one generator and one mains power supply are running simultaneously. However, in this case, the bus tie cabinet is not allowed to be closed, thus preventing the generator and mains power from being connected in parallel.

[0168] exist Figure 9 Based on the embodiments, the following can be combined with Figure 10 and Figure 11 The method of energizing the second closing coil to close the bus tie cabinet will be further described. Figure 10 Schematic diagram of the power supply control circuit provided in the embodiments of this application Figure 4 ,as well as Figure 11 This is a logic diagram illustrating the permission to close the bus tie cabinet provided in an embodiment of this application.

[0169] like Figure 10 As shown, the control circuit in this embodiment also includes: a first mains power switch circuit 50, a second mains power switch circuit 60, a first generator switch circuit 70, a second generator switch circuit 80, and a second closing coil 90. The implementation of each circuit part is similar to that described above, and will not be repeated here.

[0170] exist Figure 10 The diagram also shows the isolation cabinet, which can be understood as having its corresponding circuit connected, so it does not need to be considered.

[0171] exist Figure 10 On this basis, Figure 11 The closing logic of the busbar switchgear is further illustrated below. Figure 10 and Figure 11 Introducing two scenarios where the signal indicating that the local mains power supply allows closing is output:

[0172] One scenario is: the mains power incoming switch on this side trips, then... Figure 10 The first mains power switch circuit 50 is connected; and the generator incoming line cabinet on this side is tripped. Figure 10When the first generator switch circuit 70 is turned on, and the first mains switch circuit 50 and the first generator switch circuit 70 are turned on, the second closing coil 40 is energized, causing the bus tie cabinet to close.

[0173] And corresponding to Figure 11 The implementation logic is that when the mains power incoming cabinet and the generator incoming cabinet on this side are tripped, the bus tie cabinet is allowed to be closed.

[0174] Another scenario is: the mains power incoming cabinet on the opposite side trips, then... Figure 10 The second mains power switch circuit 60 is connected; and the generator incoming line cabinet on the opposite side is tripped. Figure 10 When the second generator switch circuit 80 is turned on, the first closing coil 40 is energized, causing the bus tie cabinet to close.

[0175] And corresponding to Figure 11 The implementation logic is that when the mains power supply cabinet on the opposite side is tripped and the generator power supply cabinet on the opposite side is tripped, the bus tie cabinet is allowed to be closed.

[0176] Based on the above description, it can be determined that the implementation method for controlling whether the bus tie cabinet can be closed in this embodiment only allows the bus tie cabinet to be closed when the mains power and the generator incoming line cabinet on this side are open, or when the mains power and the generator incoming line cabinet on the opposite side are open. This can effectively avoid accidental closing of the bus tie cabinet, which could lead to parallel connection between the mains power and the generator, or looping between mains power from different sources. Therefore, it can effectively ensure circuit safety.

[0177] Based on the above description, it can be determined that the circuit architecture in this embodiment has 5 switches: 1 mains power supply, 2 mains power supply, bus tie, 1 generator, and 2 generators. By controlling the opening and closing of these 5 switches, different power supply combinations can be achieved in response.

[0178] Based on the above description, this embodiment implements a five-in-two interlocking system using these five switches. That is, in any state, regardless of whether it's automatic transfer / reset, manual, remote, or local mode, only two of the five switches (mains incoming line / generator incoming line / bus tie) are allowed to be closed. In other words, only two of the five switches can be closed at any given time. This restriction is achieved through the circuit structure described above.

[0179] It's understandable that selecting two switches from five to close results in 10 possible combinations. However, in our circuit structure, the opening of the generator incoming line switch is a necessary condition for the closing of the mains incoming line switch, and vice versa. Therefore, it's understandable that the switch for one mains incoming line and the switch for one generator incoming line cannot be closed simultaneously, and the switch for two mains incoming lines and the switch for two generator incoming lines also cannot be closed simultaneously. Thus, excluding these two combinations, a total of eight power supply methods can be manually selected.

[0180] The following explains each of the eight power supply methods and their corresponding switch states:

[0181] Method 1: The switch for line 1 (mains power input) is closed, and the switch for line 2 (mains power input) is also closed. In this implementation, the load is effectively supplied by both mains power lines 1 and 2. (This corresponds to...) Figure 5 (The first case in the embodiments).

[0182] Method 2: Close the switch for one mains power input line and the switch for two generator input lines. In this implementation, one mains power input and one generator input effectively provide the load. (This corresponds to...) Figure 5 (The first case in the embodiments).

[0183] Method 3: The switch for one incoming mains power line is closed, and the switch for the bus tie is also closed. In this implementation, one mains power line effectively carries the load. (This corresponds to...) Figure 5 In the second scenario of the embodiment, one mains power supply is used as the local mains power supply.

[0184] Method 4: The switches for both incoming mains power lines are closed, and the switch for the bus tie is also closed. In this implementation, the two mains power lines effectively power one mains line to carry the load. (Corresponding to...) Figure 5 In the second scenario of the embodiment, two mains power supplies are used as the local mains power supply.

[0185] Method 5: The switch for the incoming line of generator 1 is closed, and the switch for the incoming line of generator 2 is also closed. In this implementation, the load is effectively supplied by both generators. (This corresponds to...) Figure 7 (The first case in the embodiments).

[0186] Method 6: Close the switch for the generator input line 1, and close the switches for the mains input lines 2. In this implementation, one generator and two mains power lines effectively provide a single generator + one mains power supply to carry the load. (This corresponds to...) Figure 7 (The first case in the embodiments).

[0187] Method 7: The switch for the incoming line of one generator is closed, and the switch for the bus tie is also closed. In this implementation, one generator effectively drives the load. (This corresponds to...) Figure 7 In the second scenario of the embodiment, generator 1 is used as the local generator.

[0188] Method 8: The switches for the two generator incoming lines are closed, and the switch for the bus tie is also closed. In this implementation, the two generators effectively support the load on one generator. (Corresponding to...) Figure 7 In the second scenario of the embodiment, the two generators are used as local generators.

[0189] Therefore, based on the above introduction, it can be determined that the power supply control circuit provided in this embodiment can provide a combination of multiple power supply methods, thereby realizing various intermediate load states during the switching process from mains power to diesel generator, so as to achieve seamless switching between mains power and diesel generator.

[0190] For example, in scenarios with a 50% power restriction, manual operation can be used to achieve a load of "one mains power line" + "one diesel generator line". Similarly, during a planned dual-power outage and diesel generator start-up, manual operation can be used to switch from "dual mains power" to "one mains power line + one diesel generator line" to "dual diesel generator lines", preventing power outages due to battery failure at the terminal unit. Furthermore, in unplanned dual-power outage scenarios, after a dual-diesel generator load, the switchback from dual diesel generator to dual mains power can be manually performed to achieve a switchback from "dual diesel generator lines" to "one mains power line + one diesel generator line" to "dual mains power", again preventing power outages due to battery failure at the terminal unit.

[0191] Furthermore, the power supply control circuit provided in this embodiment can ensure that, under any state—whether in automatic transfer / reset, manual, remote, or local mode—only two of the five switches for the mains power supply line, diesel generator power supply line, and bus tie are allowed to be closed, thus enabling various power supply combinations. It can also ensure that, under any state—whether in automatic transfer / reset, manual, remote, or local mode—the mains power supply line of the same section is interlocked, allowing only one switch to be closed, effectively preventing loops between mains power sources from different sources, and the diesel generator power supply line of the same section is interlocked, allowing only one switch to be closed, effectively preventing loops between generators from different sources, thus significantly improving circuit safety. It can also handle a "one mains power supply" + "one diesel generator power supply" load scenario, where the bus tie is locked and cannot be closed, effectively preventing parallel connection between the mains power supply and the generator, thus significantly improving circuit safety.

[0192] Based on the above description, in another possible implementation, the circuit architecture in this embodiment can also be as follows: Figure 12 As shown, Figure 12 This is a schematic diagram of another power supply architecture provided in an embodiment of this application.

[0193] like Figure 12 As shown, taking a diesel generator as an example, Figure 12 The diagram illustrates the data center's power supply architecture, specifically a dual-path mains power supply plus a medium-voltage busbar tie. Each mains power input also has an emergency power input from a diesel generator set. Furthermore, each mains power input and diesel generator input is connected to a control switch. (Correspondingly in...) Figure 1 The diagram shows seven incoming line switches to ensure medium-voltage power supply to the data center.

[0194] Specifically, Figure 12 The diagram shows the switch for one mains power input line, one diesel generator input line, two diesel generator input lines, two mains power input lines, the switch for the medium voltage bus tie, and the control switch S1 corresponding to one mains power input line and one diesel generator input line, as well as the control switch S2 corresponding to two mains power input lines and two diesel generator input lines.

[0195] And, the switch for the diesel generator incoming line and the connection to the diesel generator set, Figure 1 The G shown in the diagram represents a diesel generator.

[0196] In this circuit architecture, for example, one can be selected from the switch for one mains power input line and one switch for one diesel generator input line. Then, two of the three switches S1, medium voltage bus tie, and S2 can be selected. Similar to the above embodiment, this scheme can also realize mains power + diesel generator load.

[0197] However, this circuit architecture adds two extra medium-voltage incoming line cabinets, which will increase costs to some extent. At the same time, the need for sequential judgment will also lead to an increase in processing costs.

[0198] Based on the above description, this application also proposes an intermediate solution during the conceptualization process, which is described below in conjunction with... Figure 13 and Figure 14 This intermediate solution will also be explained. Figure 13 This is a schematic diagram of the circuit structure for closing the mains power supply on this side, provided in an embodiment of this application. Figure 14 This is a schematic diagram of the circuit structure for closing the generator on this side, provided as an embodiment of this application.

[0199] like Figure 13 As shown, the circuit connections are actually... Figure 2AThe processing logic is corresponding, specifically including bus tie switch circuit 1301, opposite side mains switch circuit 1302, local side diesel generator switch circuit 1303, opposite side diesel generator switch circuit 1305, and local side mains signal unit 1305.

[0200] exist Figure 13 The diagram also shows the isolation of the mains power input line on this side, which can be understood as the corresponding circuit being connected, so it does not need to be considered.

[0201] And, in Figure 13 Additionally, a jumper wire was connected to both ends of the diesel generator switch circuit 1304 on the opposite side. If we ignore this jumper wire for now, it's understandable that... Figure 13 In the example, when the bus tie switch, the local diesel generator switch, and the opposite diesel generator switch are all tripped, the local mains power supply is allowed to be closed; or, when the opposite mains power supply incoming switch, the local diesel generator switch, and the opposite diesel generator switch are all tripped, the local mains power supply is allowed to be closed. In other words, the mains power supply and the diesel generator cannot be closed simultaneously.

[0202] To solve this problem, our proposed intermediate solution is to connect shorting wires to both ends of the diesel generator switch circuit 1304 on the opposite side. When the shorting wires are connected, the corresponding part of the circuit of the diesel generator switch circuit 1304 on the opposite side is equivalent to being connected. Therefore, closing the diesel generator on the opposite side will not affect the operation. This allows the mains power on this side and the diesel generator on the opposite side to be closed at the same time, thus realizing a scenario where one mains power supply plus one diesel generator is connected to the load.

[0203] However, under this implementation, referring to the original logic of the bus tie-off, if the mains power on this side and the diesel generator on the opposite side are closed simultaneously, and for example, the mains power on the opposite side and the diesel generator on this side are open, then the bus tie-off is allowed to close. However, based on the above, it can be determined that if the bus tie-off is closed again when the mains power on this side and the diesel generator on the opposite side are closed simultaneously, it will lead to a parallel connection between the mains power and the generator, which may cause serious circuit failure.

[0204] And, such as Figure 14 As shown, the circuit connections are actually... Figure 2B The processing logic is corresponding, specifically including bus tie switch circuit 1401, diesel generator switch circuit 1402 on the opposite side, mains power signal unit 1403 on this side, mains power switch circuit 1404 on the opposite side, and diesel generator signal unit 1405 on this side.

[0205] And, in Figure 14 Additionally, a jumper wire was connected to both ends of the mains switch circuit 1404 on the opposite side. If we ignore this jumper wire for now, it's understandable that... Figure 14In the example, when the bus tie is tripped, the local mains power supply cabinet is tripped, and the opposite mains power supply cabinet is tripped, the local diesel generator is allowed to be closed; or, when the opposite diesel generator is tripped, the local mains power supply cabinet is tripped, and the opposite mains power supply cabinet is tripped, the local diesel generator is allowed to be closed. In other words, the mains power and the diesel generator cannot be closed simultaneously.

[0206] To solve this problem, our intermediate solution is to connect shorting wires to both ends of the mains power switch circuit 1404 on the opposite side. When the shorting wires are connected, the corresponding part of the mains power switch circuit 1404 on the opposite side is essentially connected. Therefore, closing the mains power on the opposite side will not affect the operation of the mains power. This allows the diesel generator on this side and the mains power on the opposite side to be closed simultaneously, thus realizing a scenario where one mains power supply plus one diesel generator is connected to the load.

[0207] However, under this implementation, referring to the original logic of the bus tie-off, if the local diesel generator and the opposite mains power are simultaneously closed, and for example, the opposite diesel generator and the local mains power are open, then the bus tie-off is allowed to close. However, based on the above, it can be determined that if the bus tie-off is closed again when the local diesel generator and the opposite mains power are simultaneously closed, it will lead to a parallel connection between the mains power and the generator, which may cause serious circuit failure.

[0208] Furthermore, this implementation method cannot achieve a single diesel generator supplying power to the entire section. Under such conditions, the bus tie needs to be tripped first; otherwise, there is a risk of power consumption.

[0209] It should also be noted that the switching circuits shown in the circuit structure diagram of this embodiment are actually secondary circuits. These secondary circuits are circuits formed in the electrical system by connecting the secondary windings of current transformers, measuring and monitoring instruments, relays, automatic devices, etc., through control cables. Therefore, the power supply control circuit provided in this application embodiment essentially optimizes the wiring diagram of the secondary circuit, enabling it to achieve a 5-to-2 closing interlock, thus avoiding the risk of accidental closing.

[0210] Therefore, the power supply control circuit provided in this application can not only realize the power supply mode of one mains power and one diesel generator, but also realize the power supply mode of a single mains power and a single diesel generator. At the same time, it can effectively avoid the situation of parallel connection between mains power and generator, and the situation of looping between mains power from different sources. Therefore, it can effectively ensure circuit safety and effectively realize the diversification of power supply mode, thereby realizing seamless switching between mains power and generator load.

[0211] Based on the above introduction, the following will combine... Figure 15 The power supply control method provided in this application is also described in further detail. Figure 15 A flowchart of the power supply control method provided in the embodiments of this application.

[0212] like Figure 15 As shown, the method includes:

[0213] S1501. Obtain the switch status of the bus tie cabinet, the switch status of the opposite mains power incoming cabinet, the switch status of the opposite generator incoming cabinet, and the switch status of the first local incoming cabinet.

[0214] In this embodiment, the switching status of the bus tie cabinet can include closed and open, and the switching status of the opposite mains incoming cabinet and the opposite generator incoming cabinet are similar.

[0215] S1501. Based on the switch status of the bus tie cabinet, the switch status of the opposite mains incoming cabinet, the switch status of the opposite generator incoming cabinet, and the switch status of the first local incoming cabinet, control the second local incoming cabinet to close.

[0216] In this embodiment, the first local incoming line cabinet can be, for example, the local generator incoming line cabinet, and the corresponding second local incoming line cabinet is the local mains power incoming line cabinet. Alternatively, in this embodiment, the first local incoming line cabinet can also be the local mains power incoming line cabinet, and the corresponding second local incoming line cabinet can be the local generator incoming line cabinet.

[0217] In this embodiment, the second local incoming line cabinet can be controlled to close or open based on the switch status of the bus tie cabinet, the switch status of the opposite mains incoming line cabinet, the switch status of the opposite generator incoming line cabinet, and the switch status of the first local incoming line cabinet.

[0218] In one possible implementation, if the switch status of the bus tie cabinet is open and the switch status of the first local incoming line cabinet is open, then the second local incoming line cabinet is controlled to close.

[0219] In this implementation, for example, the second incoming line cabinet on this side can be a mains power incoming line cabinet on this side. Then, it is possible to simultaneously close the mains power incoming line cabinet on this side and the mains power incoming line cabinet on the opposite side to achieve dual mains power load. Alternatively, it is also possible to simultaneously close the mains power incoming line cabinet on this side and the generator incoming line cabinet on the opposite side to achieve one generator plus one mains power load.

[0220] Alternatively, the second incoming line cabinet could also be the generator incoming line cabinet on this side. For example, it could allow simultaneous closing of both the generator incoming line cabinet on this side and the mains incoming line cabinet on the opposite side, enabling one generator and one mains power supply to operate simultaneously. Or, it could also allow simultaneous closing of both the generator incoming line cabinet on this side and the generator incoming line cabinet on the opposite side, enabling dual generator operation.

[0221] In another possible implementation, if the switch status of the opposite side mains incoming cabinet is open, the switch status of the opposite side generator incoming cabinet is open, and the switch status of the first local incoming cabinet is open, then the second local incoming cabinet is controlled to close.

[0222] In this implementation, for example, the second local incoming line cabinet can be the local mains incoming line cabinet. Then, for example, the local mains incoming line cabinet and the bus tie cabinet can be closed at the same time to realize single-circuit mains power load.

[0223] Alternatively, the second incoming line cabinet on this side can also be the incoming line cabinet for the generator on this side. For example, it is possible to enable the generator incoming line cabinet and the bus tie cabinet to be closed at the same time, so as to enable a single generator to carry the load.

[0224] Therefore, the power supply control method provided in this embodiment can effectively achieve the effect of one generator plus one mains power supply, or one generator and one mains power supply. Thus, during the process of switching from mains power supply to generator power supply, it can effectively achieve a single-path load or a generator plus mains power supply combination, thereby effectively avoiding the phenomenon of dual power outages during the process of switching from mains power supply to generator power supply, thereby improving the power supply stability of the data center.

[0225] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0226] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0227] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0228] In the several embodiments provided in this application, it should be understood that the disclosed devices and circuits can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or modules, and may be electrical, mechanical, or other forms.

[0229] The integrated modules implemented as software functional modules described above can be stored in a computer-readable storage medium. These software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the circuits described in the various embodiments of this application.

[0230] It should be understood that the aforementioned processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the circuit disclosed in this invention can be directly manifested as execution by a hardware processor, or execution by a combination of hardware and software modules within the processor.

[0231] The memory may include high-speed RAM, and may also include non-volatile storage (NVM), such as at least one disk storage device, and may also be a USB flash drive, external hard drive, read-only memory, disk or optical disc, etc.

[0232] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0233] The aforementioned storage medium can be implemented from any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The storage medium can be any available medium accessible to general-purpose or special-purpose computers.

[0234] Those skilled in the art will understand that all or part of the steps of the above-described circuit embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described circuit embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0235] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power supply control circuit, characterized in that, include: The circuit includes a bus tie switch circuit, a reverse switch circuit, a local switch circuit, and a first closing coil. The reverse switch circuit comprises a first reverse switch circuit and a second reverse switch circuit. The first opposite-side switching circuit is connected to the opposite-side mains power incoming cabinet and is used to be turned on when the opposite-side mains power incoming cabinet is opened and turned off when the opposite-side mains power incoming cabinet is closed. The second opposite-side switch circuit is connected to the opposite-side generator incoming line cabinet and is used to be turned on when the opposite-side generator incoming line cabinet is open and turned off when the opposite-side generator incoming line cabinet is closed. The switch circuit on this side is connected to the incoming line cabinet on this side and is used to be turned on when the incoming line cabinet on this side is opened and turned off when the incoming line cabinet on this side is closed. The first and second opposite-side switching circuits are connected in series. The bus tie switch circuit and the opposite switch circuit are connected in parallel. The parallel circuit formed by the bus tie switch circuit and the opposite side switch circuit is connected in series with the local side switch circuit. The first closing coil is connected to the output terminal of the local switching circuit, or the first closing coil is connected to the output terminal of the parallel circuit.

2. The circuit according to claim 1, characterized in that, When the bus tie cabinet is tripped, the bus tie switch circuit is connected; and when the bus tie cabinet is closed, the bus tie switch circuit is disconnected.

3. The circuit according to claim 1 or 2, characterized in that, When the bus tie switch circuit is turned on and the local switch circuit is turned on, the first closing coil is energized; or... When the first opposite-side switch circuit is turned on, the second opposite-side switch circuit is turned on, and the local-side switch circuit is turned on, the first closing coil is energized.

4. The circuit according to claim 3, characterized in that, When the generator incoming line cabinet on this side is tripped, the switching circuit on this side is connected; and when the generator incoming line cabinet on this side is closed, the switching circuit on this side is disconnected. When the first closing coil is energized, the mains power incoming cabinet on this side closes.

5. The circuit according to claim 3, characterized in that, When the mains power supply cabinet on this side is tripped, the switch circuit on this side is connected; and when the mains power supply cabinet on this side is closed, the switch circuit on this side is disconnected. When the first closing coil is energized, the generator incoming line cabinet on this side closes.

6. The circuit according to claim 5, characterized in that, The circuit also includes: a first mains power switch circuit, a second mains power switch circuit, a first generator switch circuit, and a second generator switch circuit; The first mains power switch circuit and the first generator switch circuit are connected in series to form a first series circuit; The second mains power switch circuit and the second generator switch circuit are connected in series to form a second series circuit; The first series circuit and the second series circuit are connected in parallel.

7. The circuit according to claim 6, characterized in that, The circuit also includes: a second closing coil; The second closing coil is connected to the output terminal of the parallel circuit formed by the first series circuit and the second series circuit.

8. The circuit according to claim 7, characterized in that, When the first mains power switch circuit is turned on and the first generator switch circuit is turned on, the second closing coil is energized; or... When the second mains switch circuit is turned on and the second generator switch circuit is turned on, the second closing coil is energized; When the second closing coil is energized, the bus tie cabinet closes.

9. A circuit control method applied to the power supply control circuit of claim 1, characterized in that, include: Obtain the switch status of the bus tie cabinet, the switch status of the mains incoming cabinet on the opposite side, the switch status of the generator incoming cabinet on the opposite side, and the switch status of the first local incoming cabinet; Based on the switching status of the bus tie cabinet, the switching status of the opposite side mains incoming cabinet, the switching status of the opposite side generator incoming cabinet, and the switching status of the first local incoming cabinet, the second local incoming cabinet is controlled to close; wherein, the first local incoming cabinet is the local generator incoming cabinet, and the second local incoming cabinet is the local mains incoming cabinet; or the first local incoming cabinet is the local mains incoming cabinet, and the second local incoming cabinet is the local generator incoming cabinet.

10. The method according to claim 9, characterized in that, The method of controlling the closing of the second local incoming line cabinet based on the switching status of the bus tie cabinet, the switching status of the opposite mains incoming line cabinet, the switching status of the opposite generator incoming line cabinet, and the switching status of the first local incoming line cabinet includes: If the switch status of the bus tie cabinet is open, and the switch status of the first local incoming line cabinet is open, then control the second local incoming line cabinet to close; or, If the switch status of the opposite side mains incoming cabinet is open, the switch status of the opposite side generator incoming cabinet is open, and the switch status of the first local incoming cabinet is open, then control the second local incoming cabinet to close.

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