Grid connection system and method of gas generator set, electronic equipment and storage medium

Abstract

The invention discloses a grid-connected system and method of a gas generator set, electronic equipment and a storage medium, and relates to the technical field of power systems. When the grid-connected system operates in a first mode, the control module controls the first switches to be switched on and controls the commercial power circuit breakers to be switched on, so that each bus can transmit commercial power to the corresponding load and supply power to the load, and the commercial power management controller can monitor the current of the corresponding bus through the switching-on of the first switches. And when the grid-connected system operates in a second mode, each unit circuit breaker is controlled to be switched on, each unit controller is started, so that the gas generator set can supply power to the corresponding load through the bus, and the unit controller can monitor the current output by the corresponding gas generator set. Thus, according to the grid-connected system of the gas generator set, when the mains supply breaks down, the gas generator set can be switched to supply power to the load, and the flexibility is high.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a grid-connected system, method, electronic equipment and storage medium for a gas generator set. Background Art

[0002] Gas generator sets, such as hydrogen combustion power stations, work mainly based on the combustion of hydrogen to generate heat energy, which in turn drives the generator to rotate and ultimately outputs electricity. Based on pure hydrogen internal combustion technology, pure hydrogen gas generator sets and hydrogen power stations are constructed to achieve the conversion of hydrogen energy to electrical energy. Hydrogen power stations can meet the requirements of rapid startup and provide stable power output.

[0003] However, in the related art, the gas generator set has poor flexibility when connected to the power grid. When the mains fails, the entire system is directly cut off from power, resulting in an inability to supply power to the load. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a grid-connected system, method, electronic device and storage medium for a gas-fired generator set, which can switch to a gas-fired generator set to supply power to a load when a mains power failure occurs, and has high flexibility.

[0005] A grid-connected system for a gas-fired generator set according to a first embodiment of the present application includes: Multiple gas-fired generator sets; Multiple busbars connected to the mains power grid; the gas generator set is connected to the corresponding busbar through the unit circuit breaker, and each busbar is equipped with a mains circuit breaker, and the mains circuit breaker and the unit circuit breaker are used to connect the load; A plurality of unit controllers, the unit controllers are connected to corresponding gas-fired generator sets; the unit controllers are used to monitor the current output by the corresponding gas-fired generator sets; A plurality of mains power management controllers, each mains power management controller being connected to a corresponding busbar via a first switch; the mains power manager being used for monitoring the current of the corresponding busbar; The control module is connected to each unit controller, the mains management controller, the first switch, the unit circuit breaker, and the mains circuit breaker respectively; the control module is used to: When the grid-connected system operates in the first mode, the control module remains in a standby state so that the mains power supplies power to the corresponding loads through the busbar; When the grid-connected system operates in the second mode, each first switch is controlled to be disconnected, each AC circuit breaker is controlled to be disconnected, each unit circuit breaker is controlled to be turned on, and each AC management controller is turned off, and each unit controller is turned on, so that the gas generator set can supply power to the corresponding load through the bus.

[0006] According to the grid-connected system of the gas generator set of the embodiment of the present application, there are at least the following beneficial effects: the first mode of the grid-connected system is the working mode when the mains is operating normally, so in this working mode, there is no need for the gas generator set to intervene to replace the mains to supply power to the bus, and then the control module is controlled to remain in a standby state so that the mains can supply power to the corresponding load through the bus; in contrast, the second mode of the grid-connected system is the working mode when the mains is abnormal and cannot supply power, so when the grid-connected system is running in the second mode, each unit circuit breaker is controlled to be turned on, each unit controller is turned on, so that the gas generator set can supply power to the corresponding load through the bus, and the unit controller can monitor the current output by the corresponding gas generator set, and because the mains is abnormal, each first switch is controlled to be disconnected, each mains circuit breaker is controlled to be disconnected, and each mains management controller is turned off. In this way, the grid-connected system of the gas generator set of the present application can switch to the gas generator set to supply power to the load when the mains fails, and has high flexibility.

[0007] According to some embodiments of the first aspect of the present application, the control module includes a load manager, which is connected to each load respectively, and is used to monitor the current of the load.

[0008] According to some embodiments of the first aspect of the present application, the control module includes multiple first medium-voltage switch cabinets and multiple second medium-voltage switch cabinets, the multiple first medium-voltage switch cabinets are connected one-to-one with multiple unit circuit breakers, and the multiple first medium-voltage switch cabinets are connected one-to-one with multiple AC circuit breakers.

[0009] According to some embodiments of the first aspect of the present application, a gas generator set includes a gas branch, an air branch, a gas supercharger, an air supercharger, a first intercooler, a second intercooler, and an internal combustion generator; The input end of the gas branch is used to connect to the combustible gas source, and the output end of the gas branch is connected to the cylinder of the internal combustion generator; the gas booster is arranged between the input end of the gas branch and the output end of the gas branch, and the first intercooler is arranged between the gas booster and the output end of the gas branch; The input end of the air branch is used to connect to the air source, and the output end of the air branch is connected to the cylinder of the internal combustion generator; the air supercharger is arranged between the input end of the air branch and the output end of the air branch; the second intercooler is arranged between the air supercharger and the output end of the air branch.

[0010] According to some embodiments of the first aspect of the present application, the gas generator set further includes an exhaust circuit, and the exhaust circuit is respectively connected to the gas supercharger and the air supercharger; The gas branch is provided with a cut-off valve and a first fast butterfly valve. The cut-off valve is provided between the input end of the gas branch and the gas booster, and the first fast butterfly valve is provided between the cut-off valve and the gas booster; The air branch is provided with a second fast butterfly door, and the second fast butterfly door is arranged between the input end of the air branch and the air supercharger.

[0011] According to some embodiments of the first aspect of the present application, the gas branch is also provided with two gas intake control valves, the input ends of the two gas intake control valves are both connected to the output ends of the first intercooler, and the output ends of the two gas intake control valves are both connected to the cylinders of the internal combustion generator.

[0012] A second aspect of the present application provides a method for connecting a gas generator set to a grid, which is applied to a grid-connected system of a gas generator set according to any one of the first aspect of the present application. The method includes: In response to receiving the first mode control instruction, each first switch is controlled to be turned on, each mains circuit breaker is controlled to be turned on, each unit circuit breaker is controlled to be turned off, each mains management controller is turned on, and each unit controller is turned off, so that the mains power supplies power to the corresponding load through the bus; wherein the first mode control instruction indicates that there is no abnormality in the mains power; In response to receiving the second mode control instruction, each first switch is controlled to be disconnected, each AC power circuit breaker is controlled to be disconnected, each unit circuit breaker is controlled to be turned on, and each AC power management controller is turned off, and each unit controller is turned on, so that the gas generator set can supply power to the corresponding load through the bus, wherein the second mode control instruction indicates that there is an abnormality in the AC power.

[0013] According to some embodiments of the second aspect of the present application, the grid-connected system further includes a plurality of second switches, and every two loads are connected through the second switches; Grid connection methods also include: When the grid-connected system is operating in the second mode, when an abnormality is detected in the target gas-fired generator set, a target load connected to the target gas-fired generator set is determined; The target second switch is determined based on the target load, the unit circuit breaker corresponding to the target gas-fired generator set is controlled to be cut off, and the target second switch is controlled to be turned on.

[0014] The third aspect of the present application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the grid-connected method of the gas generator set of any one of the second aspect embodiments.

[0015] The fourth aspect of the present application provides a storage medium, which stores a computer program. When the computer program is executed by a processor, the method for connecting a gas generator set to the grid according to any one of the second aspect embodiments is implemented.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings to be used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 A schematic diagram of the structure of a grid-connected system of a gas generator set according to an embodiment of the present application; Figure 2 A partial structural schematic diagram of a gas generator set according to an embodiment of the present application; Figure 3 A schematic flow chart of the steps of a method for connecting a gas generator set to a grid according to an embodiment of the present application; Figure 4 A schematic flow chart of a method for connecting a gas generator set to a grid according to another embodiment of the present application; Figure 5 A schematic diagram of the hardware structure of an electronic device according to an embodiment of the present application.

[0018] Description of reference numerals: MCB, first switch; BTB, second switch; K3, third switch; K1, mains circuit breaker; K2, unit circuit breaker; 110, busbar; 120, mains management controller; 130, unit controller; 140, load manager; 150, gas generator set; 151, gas branch; 1511, cut-off valve; 1512, first fast butterfly door; 1513, gas intake control valve; 152, air branch; 1521, second fast butterfly door; 153, gas booster; 154, air booster; 155, first intercooler; 156, second intercooler; 157, exhaust circuit; 158, air pressure sensor; 159, temperature sensor; 501, processor; 502, memory; 503, input / output interface; 504, communication interface; 505, bus. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0020] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0023] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0024] The first embodiment of the present application provides a grid-connected system for a gas generator set 150. Figure 1 , Figure 1The schematic diagram of the structure of the grid-connected system of the gas generator set of the embodiment of the present application. The grid-connected system of the gas generator set 150 of the embodiment of the present application includes multiple gas generator sets 150, multiple busbars 110 connected to the mains power grid, multiple unit controllers 130, multiple mains power management controllers 120 and a control module (not shown in the figure). The busbar 110 corresponds to the gas generator set 150 one by one, and the gas generator set 150 is connected to the corresponding busbar 110 through the unit circuit breaker K2, and each busbar 110 is provided with a mains circuit breaker K1, and the mains circuit breaker K1 and the unit circuit breaker K2 are used to connect the load; the unit controller 130 corresponds to the gas generator set 150 one by one, and the unit controller 130 is connected to the corresponding gas generator set 150; the unit controller 130 is used to monitor the current output by the corresponding gas generator set 150; the mains management controller 120 corresponds to the busbar 110 one by one, and the mains management controller 120 is connected to the corresponding busbar 110 through the first switch MCB; the mains manager is used to monitor the current of the corresponding busbar 110; the control module is respectively connected to each unit controller 130, the mains management controller 120, the first switch MCB, the unit circuit breaker K2, and the mains circuit breaker K1; the control module is used to: When the grid-connected system operates in the first mode, the control module maintains a standby state so that the mains power supplies power to the corresponding loads through the bus 110. The control module maintains a standby state including: controlling each first switch MCB to be turned on, controlling each mains circuit breaker K1 to be turned on, controlling each unit circuit breaker K2 to be turned off, and turning on each mains management controller 120, and turning off each unit controller 130, so that the mains power supplies power to the corresponding loads through the bus 110.

[0025] When the grid-connected system operates in the second mode, each first switch MCB is controlled to be disconnected, each AC circuit breaker K1 is controlled to be disconnected, each unit circuit breaker K2 is controlled to be turned on, and each AC management controller 120 is turned off, and each unit controller 130 is turned on, so that the gas generator set 150 can supply power to the corresponding load through the bus 110.

[0026] The grid-connected system of the gas generator set 150 in the embodiment of the present application has a first mode which is a working mode when the mains power is operating normally. When the grid-connected system operates in the first mode, the control module controls each first switch MCB to be turned on, and controls each mains power circuit breaker K1 to be turned on, so that each bus 110 can transmit the mains power to the corresponding load to supply power to the load, and the mains power management controller 120 can monitor the current of the corresponding bus 110 through the conduction of the first switch MCB. Since the gas generator set 150 does not need to be powered, the circuit breakers K2 of each unit are controlled to be disconnected, and each unit controller 130 is turned off to disconnect the connection between the gas generator set 150 and the load. The second mode of the grid-connected system is a working mode when the mains fails to supply power. When the grid-connected system operates in the second mode, each unit circuit breaker K2 is controlled to be turned on, and each unit controller 130 is turned on, so that the gas generator set 150 can supply power to the corresponding load through the bus 110, and the unit controller 130 can monitor the current output by the corresponding gas generator set 150. Since the mains is abnormal, each first switch MCB is controlled to be disconnected, each mains circuit breaker K1 is controlled to be disconnected, and each mains management controller 120 is turned off. In this way, the grid-connected system of the gas generator set 150 of the present application can switch to the gas generator set 150 to supply power to the load when the mains fails, and has high flexibility.

[0027] In one embodiment, the grid-connected system of the gas generator set 150 can also operate in the third mode. When the grid-connected system operates in the third mode, when the target mains management controller 120 detects that the current of the corresponding target bus 110 is abnormal, the control module disconnects the mains circuit breaker K1 on the target bus 110, and controls the target mains management controller 120 to be closed, and at the same time turns on the unit circuit breaker K2 connected to the target bus 110, and turns on the unit controller 130 corresponding to the gas generator set 150 corresponding to the target bus 110. At this time, the load connected to the target bus 110 is powered by the gas generator set 150. In this way, in the third mode, when some buses 110 are abnormally connected to the mains, the load connected to the abnormal bus 110 is powered by the corresponding gas generator set 150. Therefore, the grid-connected system of the embodiment of the present application can flexibly supply power to the load and improve the stability of the grid-connected system.

[0028] It should be noted that the target mains management controller 120 is one of the multiple mains management controllers 120 , and the target bus 110 is the bus 110 corresponding to the target mains management controller 120 .

[0029] In one embodiment, when the grid-connected system operates in the second mode or the third mode, the unit controller 130 monitors and manages the output current of the gas generator set 150. When an abnormality is detected in the gas generator set 150, the control module disconnects the unit circuit breaker K2 corresponding to the abnormal gas generator set 150 to cut off the connection between the gas generator set 150 and the load, thereby protecting the unit.

[0030] It should be noted that the control module is respectively connected to each unit controller 130 , the mains management controller 120 , the first switch MCB, the unit circuit breaker K2 , and the mains circuit breaker K1 in communication, and the communication connection may be connected via the CAN bus 505 .

[0031] In one embodiment, the control module includes a load manager 140 , which is connected to each load respectively and is used to monitor the current of the load.

[0032] It should be noted that the AC power management controller 120, the unit controller 130, and the load manager 140 can be power monitoring and management devices in the prior art (for example, it can be an integrated device of a power regulator and an ammeter). The AC power management controller 120 can monitor whether the current in the bus 110 is overloaded, and can control the output power of the AC power, and can detect whether the AC power connected to the bus 110 is abnormal; the unit controller 130 can monitor whether the current in the gas generator set 150 is overloaded, and can control the output power of the gas generator set 150, and can detect whether the gas generator set 150 is abnormal.

[0033] It is worth noting that referring to Figure 1 , the grid-connected system further includes a plurality of second switches BTB, and every two loads are connected through the second switch BTB; when the grid-connected system operates in the second mode or the third mode, when an abnormality is detected in the target gas generator set 150, the target load connected to the target gas generator set 150 is determined; the target second switch BTB is determined based on the target load, and the second switch BTB is controlled to be turned on. In this way, one gas generator set 150 supplies power to two loads at the same time. The target gas generator set 150 is one of the multiple gas generator sets 150, the target load refers to the load connected to the target gas generator set 150, and the target second switch BTB is the second switch BTB connected to the target load.

[0034] When the second switch BTB is turned on, the load manager 140 monitors the currents of the two loads, and when an abnormal current is detected in any one of the two loads, the second switch BTB is turned off, thereby reducing the risk of damage to the load due to abnormal current.

[0035] In one embodiment, the load manager 140 is a low-voltage switch cabinet. Low-voltage switch cabinet, also known as low-voltage distribution cabinet, is a common name for low-voltage complete switchgear and control equipment, which refers to a complete set of electrical devices with AC and DC voltages below 1000V. The second switch BTB is a breaker transfer bus 110 (Breaker Transfer Bus, BTB): a device for realizing power switching during power system failure or maintenance, which allows the load to be transferred from one power source to another without power outage.

[0036] In one embodiment, the control module includes multiple first medium-voltage switch cabinets (not shown in the figure) and multiple second medium-voltage switch cabinets (not shown in the figure), the multiple first medium-voltage switch cabinets are connected to the unit circuit breaker K2 in a one-to-one correspondence, and the multiple first medium-voltage switch cabinets are connected to the mains circuit breaker K1 in a one-to-one correspondence.

[0037] It should be noted that medium voltage switchgear refers to high voltage complete switchgear with a rated voltage between 3.6kV and 40.5kV. It is an important component of the power system and is mainly used to distribute, control and protect electrical energy.

[0038] It can be understood that each mains power management controller 120 and each unit controller 130 and load manager 140 are connected to the 24V voltage through the third switch K3, and a switch control unit (not shown in the figure) is provided in the control module. The switch control unit is connected to each third switch K3, and the switch control unit is used to turn on or off the third switch K3. When the third switch K3 is turned on, the corresponding mains power management controller 120 or unit controller 130 or load manager 140 is connected to the 24V voltage, thereby turning on the corresponding mains power management controller 120 or unit controller 130 or load manager 140. When the third switch K3 is disconnected, the corresponding mains power management controller 120 or unit controller 130 or load manager 140 is disconnected from the 24V voltage, thereby turning off the corresponding mains power management controller 120 or unit controller 130 or load manager 140.

[0039] In one embodiment, the first switch MCB adopts a miniature circuit breaker, and the MCB is connected to the mains circuit breaker K1, and can control the on or off of the mains circuit breaker K1. Micro Circuit Breaker (MCB): It is an electromagnetic device with a complete shell in a molded insulating material. It is mainly used to protect the circuit from electrical faults such as short circuit and overload. MCB works by detecting the current change in the circuit. When the current exceeds the set rated value, the MCB automatically disconnects the circuit, thereby preventing fire and equipment damage caused by circuit overload or short circuit.

[0040] In one embodiment, referring to Figure 2 , Figure 2 This is a schematic diagram of the partial structure of a gas generator set according to an embodiment of the present application. The gas generator set 150 includes a gas branch 151, an air branch 152, a gas supercharger 153, an air supercharger 154, a first intercooler 155, a second intercooler 156 and an internal combustion generator (not shown in the figure); the input end of the gas branch 151 is connected to a combustible gas source, and the output end of the gas branch 151 is connected to the cylinder of the internal combustion generator; the gas supercharger 153 is arranged between the input end of the gas branch 151 and the output end of the gas branch 151, and the first intercooler 155 is arranged between the gas supercharger 153 and the output end of the gas branch 151; the input end of the air branch 152 is connected to an air source, and the output end of the air branch 152 is connected to the cylinder of the internal combustion generator; the air supercharger 154 is arranged between the input end of the air branch 152 and the output end of the air branch 152; the second intercooler 156 is arranged between the air supercharger 154 and the output end of the air branch 152.

[0041] Specifically, air is input from the input end of the air branch 152, and then passes through the air supercharger 154 and the second intercooler 156 in sequence before being input into the cylinder of the internal combustion generator. The combustible gas may be hydrogen, which is input from the input end of the gas branch 151, and then passes through the gas supercharger 153 and the first intercooler 155 in sequence before being input into the cylinder of the internal combustion generator. The air supercharger 154 is used to increase the air pressure, and the second intercooler 156 is used to reduce the temperature of the air; the gas supercharger 153 is used to increase the air pressure of the combustible gas, and the first intercooler 155 is used to reduce the temperature of the combustible gas. The combustible gas and air are first mixed in the cylinder of the internal combustion generator for compression and then burned to generate electricity. In the related art, the combustible gas and air are mixed before entering the cylinder of the internal combustion generator. During combustion, pipe flashback is prone to occur. In the present application, the combustible gas and air are divided into two paths, each of which is pressurized by a supercharger, mixed in the cylinder after intercooling, and then compressed and burned. This can avoid pipe flashback and greatly improve safety.

[0042] In one embodiment, the gas generator set 150 further includes an exhaust circuit 157 , which is connected to the gas booster 153 and the air booster 154 respectively; the exhaust circuit 157 is used for exhausting the gas booster 153 and the air booster 154 .

[0043] In one embodiment, the gas branch 151 is provided with a cut-off valve 1511 and a first fast butterfly valve 1512. The cut-off valve 1511 is provided between the input end of the gas branch 151 and the gas booster 153, and the first fast butterfly valve 1512 is provided between the cut-off valve 1511 and the gas booster 153. Under normal circumstances, the cut-off valve 1511 is opened to make the gas branch 151 conductive. Under special circumstances, the cut-off valve 1511 is closed to cut off the gas branch 151, so that the gas branch 151 stops outputting combustible gas to the internal combustion generator. The first fast butterfly valve 1512 can adjust the flow of the gas branch 151.

[0044] The air branch 152 is provided with a second fast butterfly door 1521 . The second fast butterfly door 1521 is provided between the input end of the air branch 152 and the air supercharger 154 . The second fast butterfly door 1521 is used to adjust the flow of the air branch 152 .

[0045] It should be noted that the fast butterfly gate refers to the fast butterfly valve, which uses a disc-shaped butterfly plate as the opening and closing part and rotates with the valve stem to quickly open, close or adjust the fluid channel. Its working principle is to change the cross-sectional area of ​​the fluid channel by rotating the butterfly plate, thereby achieving the purpose of controlling the flow rate.

[0046] In one embodiment, the gas branch 151 is further provided with two gas intake control valves 1513, the input ends of the two gas intake control valves 1513 are both connected to the output end of the first intercooler 155, and the output ends of the two gas intake control valves 1513 are both connected to the cylinder of the internal combustion generator. The combustible gas is input into the cylinder of the internal combustion generator through the two gas intake control valves 1513, which is conducive to promoting the mixing of the combustible gas and air.

[0047] In one embodiment, the gas branch 151 and the air branch 152 are respectively provided with an air pressure sensor 158 and a temperature sensor 159. In the gas branch 151, the temperature sensor 159 and the air pressure sensor 158 are arranged between the shut-off valve 1511 and the first fast butterfly valve 1512; in the air branch 152, the temperature sensor 159 and the air pressure sensor 158 are arranged between the input end of the air branch 152 and the second fast butterfly valve 1521.

[0048] The second embodiment of the present application provides a method for connecting a gas generator set 150 to a grid, which is applied to the grid-connected system of the gas generator set 150 of the first embodiment. Figure 3 , Figure 3 The following is a flow chart of the steps of the method for connecting the gas generator set 150 to the grid according to the embodiment of the present application. The method for connecting the gas generator set 150 to the grid includes but is not limited to the following steps: Step S310, in response to receiving the first mode control instruction, controlling each first switch to be turned on, controlling each mains circuit breaker to be turned on, controlling each unit circuit breaker to be turned off, and turning on each mains management controller, and turning off each unit controller, so that the mains power supplies power to the corresponding load through the bus; wherein the first mode control instruction indicates that there is no abnormality in the mains power; Step S320, in response to receiving the second mode control instruction, control each first switch to be disconnected, control each AC circuit breaker to be disconnected, control each unit circuit breaker to be turned on, turn off each AC management controller, and turn on each unit controller, so that the gas generator set can supply power to the corresponding load through the bus, wherein the second mode control instruction indicates that the AC power is abnormal.

[0049] In one embodiment, the control module of the grid-connected system is connected to the terminal of the relevant personnel for communication, and the terminal of the relevant personnel sends a first mode control instruction to the control module, so that the grid-connected system executes step S310.

[0050] In one embodiment, the terminal of the relevant personnel sends the second mode control instruction to the control module, so that the grid-connected system executes step S320. In another embodiment, when the mains power management controller 120 detects that the mains power is abnormal, the mains power management controller 120 generates the second mode control instruction and sends the second mode control instruction to the control module of the grid-connected system, so that the grid-connected system executes step S320.

[0051] The embodiment of the present application receives the first mode control instruction through the above steps S310 to S320, so that the grid-connected system operates in the first mode, and the control module controls each first switch MCB to be turned on, and controls each AC circuit breaker K1 to be turned on, so that each bus 110 can transmit the AC power to the corresponding load to supply power to the load, and the AC management controller 120 can monitor the current of the corresponding bus 110 through the conduction of the first switch MCB. Since the gas generator set 150 does not need to be powered, the circuit breakers K2 of each unit are controlled to be disconnected, and each unit controller 130 is turned off to disconnect the connection between the gas generator set 150 and the load. When receiving the second mode control instruction, the grid-connected system operates in the second mode. The second mode of the grid-connected system is the working mode when the mains fails to supply power. When the grid-connected system operates in the second mode, each unit circuit breaker K2 is controlled to be turned on, and each unit controller 130 is turned on, so that the gas generator set 150 can supply power to the corresponding load through the bus 110, and the unit controller 130 can monitor the current output by the corresponding gas generator set 150. Since the mains is abnormal, each first switch MCB is controlled to be disconnected, each mains circuit breaker K1 is controlled to be disconnected, and each mains management controller 120 is turned off. In this way, the grid-connected system of the gas generator set 150 of the present application can switch to the gas generator set 150 to supply power to the load when the mains fails, with high flexibility.

[0052] In one embodiment, referring to Figure 4 , Figure 4 1 is a flow chart of a method for connecting a gas generator set 150 to a grid according to another embodiment of the present application. Specifically, the flow chart of the method for connecting a gas generator set 150 to a grid includes: Step S410, when the grid-connected system is operating in the second mode, when an abnormality is detected in the target gas-fired generator set, determining a target load connected to the target gas-fired generator set; Step S420, determining the target second switch based on the target load, controlling the unit circuit breaker K2 corresponding to the target gas-fired generator set to be turned off, and controlling the target second switch to be turned on.

[0053] In step S410 to step S420 of the embodiment of the present application, when the grid-connected system is running in the second mode, when an abnormality is detected in the target gas generator set 150, the target load connected to the target gas generator set 150 is determined, the target second switch BTB is determined based on the target load, and the second switch BTB is controlled to be turned on. In this way, when an abnormality occurs in the target gas generator set 150, the connection between the target gas generator set 150 and the target load is disconnected in time to reduce the risk of damage to the target load, and at the same time, the second switch BTB is controlled to be turned on, so that the target load is turned on through another load, and the target load can be powered by the gas generator set 150 connected to another load, thereby improving the reliability of the system. It should be noted that the target gas generator set 150 is one of a plurality of gas generator sets 150.

[0054] The third aspect of the present application provides an electronic device, which includes a memory 502 and a processor 501. The memory 502 stores a computer program, and the processor 501 implements the grid connection method of the gas generator set 150 of the above embodiment when executing the computer program. The electronic device can be any smart terminal including a tablet computer, a car computer, etc.

[0055] In one embodiment, referring to Figure 5 , Figure 5 The hardware structure of the electronic device of the embodiment of the present application is illustrated, and the electronic device includes: The processor 501 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application; The memory 502 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 502 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 502, and the processor 501 calls and executes the grid connection method of the gas generator set in the embodiment of this application; Input / output interface 503, used to implement information input and output; Communication interface 504, used to realize communication interaction between the device and other devices, which can be realized through wired mode (such as USB, network cable, etc.) or wireless mode (such as mobile network, WIFI, Bluetooth, etc.); A bus 505 that transmits information between various components of the device (e.g., the processor 501, the memory 502, the input / output interface 503, and the communication interface 504); The processor 501 , the memory 502 , the input / output interface 503 and the communication interface 504 are connected to each other in communication within the device via the bus 505 .

[0056] To achieve the above-mentioned purpose, the fourth aspect of the present application provides a storage medium, which stores a computer program. When the computer program is executed by a processor, the grid-connected method of the gas generator set of the first aspect of the present application is implemented.

[0057] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0058] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0059] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0060] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0061] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0062] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0063] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0064] In the several embodiments provided in the present application, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the system embodiments described above are merely schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0065] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0066] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0067] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0068] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. A gas generator set (150) grid-connected system, characterized in that: include: Multiple gas generator sets (150); A plurality of busbars (110) connected to a mains power grid; the gas generator set (150) is connected to the corresponding busbar (110) via a unit circuit breaker (K2), and each busbar (110) is provided with a mains circuit breaker (K1), and a load is connected between the mains circuit breaker (K1) and the unit circuit breaker (K2); A plurality of unit controllers (130), the unit controllers (130) being connected to corresponding gas-fired generator sets (150); the unit controllers (130) being used to monitor the current output by the corresponding gas-fired generator sets (150); A plurality of mains power management controllers (120), the mains power management controllers (120) being connected to the corresponding busbars (110) via a first switch (MCB); the mains power manager being used to monitor the current of the corresponding busbars (110); A control module, the control module being connected to each of the unit controllers (130), the mains management controller (120), the first switch (MCB), the unit circuit breaker (K2), and the mains circuit breaker (K1); the control module being used for: When the grid-connected system operates in a first mode, the control module maintains a standby state so that the city power supplies power to the corresponding load through the bus (110); When the grid-connected system operates in the second mode, each of the first switches (MCB) is controlled to be disconnected, each of the mains circuit breakers (K1) is controlled to be disconnected, each of the unit circuit breakers (K2) is controlled to be turned on, each of the mains management controllers (120) is turned off, and each of the unit controllers (130) is turned on, so that the gas generator set (150) supplies power to the corresponding load through the busbar (110).

2. The grid-connected system of the gas generator set (150) according to claim 1, characterized in that: The control module comprises a load manager (140), wherein the load manager (140) is respectively connected to each load, and the load manager (140) is used to monitor the current of the load.

3. The grid-connected system of the gas generator set (150) according to claim 1, characterized in that: The control module comprises a plurality of first medium-voltage switch cabinets and a plurality of second medium-voltage switch cabinets, wherein the plurality of first medium-voltage switch cabinets are connected to the plurality of unit circuit breakers (K2) in a one-to-one correspondence, and the plurality of first medium-voltage switch cabinets are connected to the plurality of mains circuit breakers (K1) in a one-to-one correspondence.

4. The grid-connected system of the gas generator set (150) according to claim 1, characterized in that: The gas generator set (150) comprises a gas branch (151), an air branch (152), a gas supercharger (153), an air supercharger (154), a first intercooler (155), a second intercooler (156) and an internal combustion generator; The input end of the gas branch (151) is used to connect to a combustible gas source, and the output end of the gas branch (151) is connected to a cylinder of the internal combustion generator; the gas booster (153) is arranged between the input end of the gas branch (151) and the output end of the gas branch (151), and the first intercooler (155) is arranged between the gas booster (153) and the output end of the gas branch (151); The input end of the air branch (152) is used to connect to an air source, and the output end of the air branch (152) is connected to a cylinder of the internal combustion generator; the air supercharger (154) is arranged between the input end of the air branch (152) and the output end of the air branch (152); and the second intercooler (156) is arranged between the air supercharger (154) and the output end of the air branch (152).

5. The grid-connected system of the gas generator set (150) according to claim 4, characterized in that: The gas generator set (150) further comprises an exhaust circuit (157), wherein the exhaust circuit (157) is respectively connected to the gas supercharger (153) and the air supercharger (154); The gas branch circuit (151) is provided with a cut-off valve (1511) and a first fast butterfly valve (1512); the cut-off valve (1511) is provided between the input end of the gas branch circuit (151) and the gas booster (153); and the first fast butterfly valve (1512) is provided between the cut-off valve (1511) and the gas booster (153); The air branch (152) is provided with a second fast butterfly door (1521), and the second fast butterfly door (1521) is arranged between the input end of the air branch (152) and the air booster (154).

6. The grid-connected system of the gas generator set (150) according to claim 5, characterized in that: The gas branch (151) is also provided with two gas intake control valves (1513), the input ends of the two gas intake control valves (1513) are both connected to the output ends of the first intercooler (155), and the output ends of the two gas intake control valves (1513) are both connected to the cylinders of the internal combustion generator.

7. A method for connecting a gas-fired generator set (150) to a grid, characterized in that: A grid-connected system for a gas-fired generator set (150) as claimed in any one of claims 1 to 6, wherein the grid-connected method comprises: In response to receiving a first mode control instruction, each of the first switches (MCBs) is controlled to be turned on, each of the mains circuit breakers (K1) is controlled to be turned on, each of the unit circuit breakers (K2) is controlled to be turned off, each of the mains management controllers (120) is turned on, and each of the unit controllers (130) is turned off, so that the mains power supplies power to the corresponding load through the busbar (110); wherein the first mode control instruction indicates that there is no abnormality in the mains power; In response to receiving a second mode control instruction, each of the first switches (MCB) is controlled to be disconnected, each of the mains circuit breakers (K1) is controlled to be disconnected, each of the unit circuit breakers (K2) is controlled to be turned on, each of the mains management controllers (120) is turned off, and each of the unit controllers (130) is turned on, so that the gas generator set (150) supplies power to the corresponding load through the bus (110), wherein the second mode control instruction indicates that the mains power is abnormal.

8. The method for connecting a gas-fired generator set (150) to a grid according to claim 7, characterized in that: The grid-connected system further comprises a plurality of second switches (BTB), and every two loads are connected via the second switches (BTB); The grid connection method further comprises: When the grid-connected system is operating in the second mode, when an abnormality is detected in the target gas-fired generator set (150), a target load connected to the target gas-fired generator set (150) is determined; A target second switch (BTB) is determined based on the target load, the unit circuit breaker (K2) corresponding to the target gas generator unit (150) is controlled to be turned off, and the target second switch (BTB) is controlled to be turned on.

9. An electronic device, characterized in that: The electronic device comprises a memory (502) and a processor (501), the memory (502) stores a computer program, and the processor (501) implements the grid connection method of the gas generator set according to claim 7 or 8 when executing the computer program.

10. A storage medium storing a computer program, characterized in that: When the computer program is executed by the processor (501), the grid connection method of the gas generator set according to claim 7 or 8 is implemented.

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