A method and system for switching SFC start-up control that adapts to different main wiring methods

Abstract

The present invention discloses an SFC startup control switching method and system adapted to different main wiring modes, including selecting different logic control modes according to the SFC system configured by the generator set and the configuration mode with the generator set; selecting different control schemes under the corresponding logic control mode in combination with the unit startup instruction according to the different logic control modes; and realizing SFC startup control switching according to different control schemes. Accurately classify the situations in which different SFC systems start different generator sets, realize flexible switching of the system when the primary wiring changes, upgrade and optimize the startup program of the SFC control system, so that the equipment technical service personnel no longer need to be on site to upgrade the board and change the program, which brings great convenience to the upgrade and optimization of power generation enterprises and equipment maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of variable frequency starting of generator sets, and in particular to an SFC starting control switching method and system adapted to different main connection modes. Background Art

[0002] The static frequency converter (SFC) starting system (SFC system), which is composed of the static frequency converter (SFC) as the core component, is an important and indispensable device to ensure the rapid, safe and frequent starting of gas turbine generator sets or pumped storage generator sets. For primary traction systems with different main wiring methods, the SFC startup control often needs to correspond to the switch settings and action logic of the primary system to configure the startup program.

[0003] When a power plant is expanded, the primary wiring of the traction system changes, and the system is flexibly switched, the startup program of the SFC control system needs to be upgraded and optimized accordingly, and equipment technical service personnel are required to be on site to upgrade the board and change the program, which brings inconvenience to the power generation company's upgrade optimization and equipment maintenance.

[0004] For a certain power plant, due to the expansion of the power plant and the increase of units, there will be differences in capacity, manufacturer, and model between the expanded units and the original units. As a result, the original SFC system will have different dragging performance when dragging the newly built units, and a new SFC system needs to be reconfigured for dragging, which increases the equipment cost. If the SFC system needs to be redundantly configured, the reconfigured SFC system and the original SFC system provide the function of cross-drag. At this time, two SFC systems are required to provide two different sets of startup control parameters to meet the drag requirements of different units. The existing single SFC system only has the same control parameters for the same model, and cannot provide control requirements for units with different drag requirements. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above existing problems, the present invention is proposed.

[0007] Therefore, the present invention provides an SFC startup control switching method and system that are adaptable to different main wiring modes, which can solve the problems mentioned in the background technology.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions, a SFC startup control switching method adapted to different main wiring modes, comprising:

[0009] Select different logic control modes according to the SFC system configured with the generator set and its configuration with the generator set;

[0010] According to the different logic control modes, combined with the unit start-up instructions, select different control schemes under the corresponding logic control mode;

[0011] Realize SFC startup control switching according to different control schemes.

[0012] As a preferred solution of the SFC startup control switching method adapted to different main wiring modes described in the present invention, wherein: the selection of different logic control modes includes a first logic control mode and a second logic control mode,

[0013] The first logic control mode is a one-to-two starting mode. When the number of SFC systems is 1 and the number of generator sets is 2, the first logic control mode is adopted. In the first logic control mode, if any generator set is No. 1, the other one is No. 2.

[0014] The second logic control mode is the cross-drag mode. When the number of SFC systems is 2 and the number of generator sets is 2, the second logic control mode is adopted. In the second logic control mode, if any generator set is the No. 3 unit, the other is the No. 4 unit. In the second logic control mode, any SFC system is the first system and the second system.

[0015] The equipment capacity of the SFC system can meet the drag requirements of two units.

[0016] As a preferred solution of the SFC startup control switching method adapted to different main wiring modes described in the present invention, wherein: the unit startup instruction includes a No. 1 unit startup instruction, a No. 2 unit startup instruction, a No. 3 unit startup instruction and a No. 4 unit startup instruction,

[0017] The different control schemes include a first control scheme, a second control scheme, a third control scheme and a fourth control scheme, and the different control schemes each include two sets of start control constants, a start constant one and a start constant two;

[0018] When the SFC start control is switched in the first logic control mode, if the first control scheme is selected, then when receiving the start command of the No. 1 machine, the SFC system issues the first command. If the first switch is closed and the second switch is disconnected at this time, the SFC system completes the connection once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the start SFC setting selects the start setting one;

[0019] When receiving the start command of the second unit, the SFC system issues the second command. If the second switch is closed and the first switch is in the open position, the SFC system completes the connection once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the SFC setting is started to select the start setting 2.

[0020] When the SFC start control is switched under the first logic control mode, if the second control scheme is selected, then when receiving the start command of the No. 1 unit, the SFC system issues a third command. If at this time the first contact of the first circuit breaker is connected to the circuit, and the first contact of the first circuit breaker and the second contact of the first circuit breaker are reliably disconnected, then the SFC connection is completed once. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the SFC setting is started to select the start setting one. After the SFC system exits, the SFC system is grounded after the first circuit breaker's No. 0 contact is connected to the circuit.

[0021] When receiving the start-up command of unit No. 2, the SFC system issues the fourth command. If the second contact of the first circuit breaker is connected to the circuit and the zeroth contact of the first circuit breaker and the first contact of the first circuit breaker are reliably disconnected, the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the SFC constant is started and the start constant two is selected.

[0022] As a preferred solution of the SFC startup control switching method adapted to different main wiring modes described in the present invention, wherein: the different control schemes also include:

[0023] When the SFC startup control is switched under the second logic control mode, if the third control scheme is selected, then when the first system starts the No. 3 unit, the first system issues the fifth instruction. If at this time the first system variable frequency output switch 1 is closed, and the first system variable frequency output switch 2, the second system variable frequency output switch 1 and the second system variable frequency output switch 2 are all in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup SFC setting is switched to the startup setting 1 corresponding to the No. 3 unit;

[0024] When the first system is selected to start the No. 4 unit, the first system issues the sixth instruction. If the first system variable frequency output switch 2 is closed at this time, and the first system variable frequency output switch 1, the second system variable frequency output switch 1 and the second system variable frequency output switch 2 are all in the open position, then the SFC connection is completed once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit.

[0025] When the second system is selected to start the No. 4 unit, the first system issues the seventh instruction. If the second system variable frequency output switch 2 is closed at this time, and the second system variable frequency output switch 1, the first system variable frequency output switch 1 and the first system variable frequency output switch 2 are all in the open position, then the SFC connection is completed once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit.

[0026] When the second system is selected to start the No. 3 unit, the first system issues the eighth instruction. If the second system frequency conversion output switch 1 is closed at this time, and the second system frequency conversion output switch 2, the first system frequency conversion output switch 1 and the first system frequency conversion output switch 2 are all in the open position, the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 1 corresponding to the No. 3 unit.

[0027] As a preferred solution of the SFC startup control switching method adapted to different main wiring modes described in the present invention, wherein: the different control schemes also include:

[0028] When the SFC startup control is switched under the second logic control mode, if the fourth control scheme is selected, then when the first system starts the No. 3 unit, the first system issues the ninth instruction. If at this time the third system variable frequency output switch 1 and the third system variable frequency output switch 2 are closed, and the fourth system variable frequency output switch 1, the fourth system variable frequency output switch 2 and the cross-drag switch are all in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup SFC setting is switched to the startup setting 1 corresponding to the No. 3 unit;

[0029] When the first system is selected to start the No. 4 unit, the first system issues the tenth instruction. If the third system variable frequency output switch 1, the cross-drag switch and the fourth system variable frequency output switch 2 are closed at this time, and the fourth system variable frequency output switch 1 and the third system variable frequency output switch 2 are both in the open position, then the SFC connection is completed once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit.

[0030] When the second system is selected to start the No. 4 unit, the first system issues the eleventh instruction. If the fourth system variable frequency output switch 1 and the fourth system variable frequency output switch 2 are closed at this time, and the third system variable frequency output switch 1, the third system variable frequency output switch 2 and the cross drag switch are all in the open position, then the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit;

[0031] When the second system is selected to start the No. 3 unit, the first system issues the twelfth instruction. If at this time the fourth system frequency conversion output switch 1, the cross-drag switch and the third system frequency conversion output switch 2 are closed, and the third system frequency conversion output switch 1 and the fourth system frequency conversion output switch 2 are both in the open position, the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 1 corresponding to the No. 3 unit.

[0032] As a preferred solution of the SFC startup control switching method adapted to different main wiring modes described in the present invention, wherein: the different control schemes also include:

[0033] When the system issues an instruction, the system can obtain the real-time parameter information of the circuit after the circuit connection is completed. When the real-time parameter information meets the corresponding startup operation, the startup setting in the system will perform the switching operation, and the switching startup operation corresponds to the startup setting;

[0034] If the real-time parameter information of the circuit does not correspond to the startup operation, the startup setting in the system will switch to the opposite startup setting to ensure that the circuit is not connected. At this time, an error alarm will be issued and the inspection personnel will inspect and adjust the circuit connection.

[0035] As a preferred solution of the SFC startup control switching method adapted to different main wiring modes described in the present invention, wherein: the different control schemes also include:

[0036] The SFC system selects different startup schemes according to the on-site wiring method. Different startup schemes are pre-programmed. By selecting different control words to correspond to different startup schemes, the startup mode can be controlled by remotely sending the scheme selection control.

[0037] An SFC startup control switching system adapted to different main wiring modes, characterized in that it includes a first selection module, a second selection module and a switching implementation module,

[0038] A first selection module, the first selection module is used to select different logic control modes according to the SFC system configured with the generator set and the configuration mode with the generator set;

[0039] A second selection module, the second selection module is used to select different control schemes under the corresponding logic control mode according to the different logic control modes and in combination with the unit start-up instruction;

[0040] A switching implementation module is used to implement SFC startup control switching according to different control schemes.

[0041] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the steps of the above method when executing the computer program.

[0042] A computer-readable storage medium stores a computer program, wherein the computer program implements the steps of the method described above when executed by a processor.

[0043] Beneficial effects of the invention: The invention proposes an SFC starting control switching method and system that are adaptable to different main wiring modes, accurately classifies the situations of starting different generator sets by different SFC systems, realizes flexible switching of the system when a primary wiring changes, upgrades and optimizes the startup program of the SFC control system, and makes it unnecessary for equipment technical service personnel to be on site to upgrade boards and change programs, which greatly facilitates upgrades and optimizations as well as equipment maintenance for power generation companies. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0045] Figure 1 A method flow chart of an SFC startup control switching method and system adapted to different main wiring modes provided by an embodiment of the present invention;

[0046] Figure 2 A SFC startup control switching method and system adapted to different main wiring modes provided by an embodiment of the present invention. A schematic diagram of a single SFC system with one-to-two primary systems Figure 1 ;

[0047] Figure 3 A SFC startup control switching method and system adapted to different main wiring modes provided by an embodiment of the present invention. A schematic diagram of a single SFC system with one-to-two primary systems Figure 2 ;

[0048] Figure 4 A schematic diagram of a primary system of two sets of SFC without intermediate circuit breakers, provided by an embodiment of the present invention, of an SFC startup control switching method and system adapted to different main wiring modes;

[0049] Figure 5 A schematic diagram of a primary system of two SFC systems with an intermediate circuit breaker, provided by an embodiment of the present invention, which is a method and system for SFC startup control switching adapted to different main wiring modes;

[0050] Figure 6 An internal structure diagram of a computer device of an SFC startup control switching method and system adapted to different main wiring modes provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0052] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0053] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0054] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0055] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Example 1

[0058] Reference Figure 1-6 , which is the first embodiment of the present invention, provides an SFC startup control switching method and system adapted to different main wiring modes, including:

[0059] Step 102, selecting different logic control modes according to the SFC system configured with the generator set and the configuration method with the generator set;

[0060] Wherein, selecting different logic control modes includes a first logic control mode and a second logic control mode.

[0061] Furthermore, the first logic control mode is a one-to-two starting mode. When the number of SFC systems is 1 and the number of generator sets is 2, the first logic control mode is adopted. In the first logic control mode, if any generator set is the No. 1 unit, the other one is the No. 2 unit.

[0062] Furthermore, the second logic control mode is the cross-drag mode. When the number of SFC systems is 2 and the number of generator sets is 2, the second logic control mode is adopted. In the second logic control mode, if any generator set is the No. 3 unit, the other is the No. 4 unit. In the second logic control mode, any SFC system is the first system and the second system.

[0063] It should be noted that it is assumed that the primary equipment capacity of each SFC system can meet the drag requirements of two units, and both SFC systems can be connected to two unit control systems (which may be the same control system or different versions of the same control system, or different control systems), and both SFC systems can be connected to two unit excitation systems.

[0064] It should be noted that the equipment capacity of the SFC system can meet the drag requirements of two units.

[0065] Step 104, according to different logic control modes and in combination with the unit start-up instruction, select different control schemes under the corresponding logic control mode;

[0066] The unit start-up instructions include the unit 1 start-up instruction, the unit 2 start-up instruction, the unit 3 start-up instruction, and the unit 4 start-up instruction.

[0067] Furthermore, the different control schemes include a first control scheme, a second control scheme, a third control scheme and a fourth control scheme, and the different control schemes each include two sets of start control settings, a start setting one and a start setting two;

[0068] It should be noted that when the SFC start control is switched in the first logic control mode, if the first control scheme is selected, when receiving the start command of the No. 1 machine, the SFC system issues the first command. If the first switch is closed and the second switch is disconnected at this time, the SFC system completes the connection once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the start SFC setting selects the start setting one;

[0069] Furthermore, when receiving the start command of the second unit, the SFC system issues a second command. If the second switch is closed at this time and the first switch is in the open position, the SFC system completes the connection once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the SFC setting is started to select the start setting 2.

[0070] Furthermore, when the SFC start control is switched in the first logic control mode, if the second control scheme is selected, then when receiving the start command of the No. 1 machine, the SFC system issues a third command. If at this time the first contact of the first circuit breaker is connected to the circuit, and the 0th contact of the first circuit breaker and the 2nd contact of the first circuit breaker are reliably disconnected, then the SFC connection is completed once, and at the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the SFC setting is started to select the start setting 1. After the SFC system exits, the 0th contact of the first circuit breaker is connected to the circuit, and the SFC system is grounded;

[0071] Furthermore, when receiving the start-up command of unit No. 2, the SFC system issues a fourth command. If at this time the second contact of the first circuit breaker is connected to the circuit, and the 0th contact of the first circuit breaker and the 1st contact of the first circuit breaker are reliably disconnected, the SFC connection is completed once. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the SFC constant is started and the start constant 2 is selected.

[0072] It should be noted that when the SFC startup control is switched in the second logic control mode, if the third control scheme is selected, when the first system performs the startup operation of unit 3, the first system issues the fifth instruction. If at this time the first system variable frequency output switch 1 is closed, and the first system variable frequency output switch 2, the second system variable frequency output switch 1 and the second system variable frequency output switch 2 are all in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup SFC setting is switched to the startup setting 1 corresponding to unit 3;

[0073] Furthermore, when the first system is selected to start the No. 4 unit, the first system issues a sixth instruction. If the first system variable frequency output switch 2 is closed at this time, and the first system variable frequency output switch 1, the second system variable frequency output switch 1 and the second system variable frequency output switch 2 are all in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit;

[0074] Furthermore, when the second system is selected to start the No. 4 unit, the first system issues the seventh instruction. If the second system variable frequency output switch 2 is closed at this time, and the second system variable frequency output switch 1, the first system variable frequency output switch 1 and the first system variable frequency output switch 2 are all in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit;

[0075] Furthermore, when the second system is selected to start the No. 3 unit, the first system issues the eighth instruction. If the second system frequency conversion output switch 1 is closed at this time, and the second system frequency conversion output switch 2, the first system frequency conversion output switch 1 and the first system frequency conversion output switch 2 are all in the open position, then the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 1 corresponding to the No. 3 unit.

[0076] It should be noted that when the SFC startup control is switched in the second logic control mode, if the fourth control scheme is selected, when the first system starts the No. 3 unit, the first system issues the ninth instruction. If at this time the third system variable frequency output switch 1 and the third system variable frequency output switch 2 are closed, and the fourth system variable frequency output switch 1, the fourth system variable frequency output switch 2 and the cross-drag switch are all in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup SFC setting is switched to the startup setting 1 corresponding to the No. 3 unit;

[0077] Furthermore, when the first system is selected to start the No. 4 unit, the first system issues the tenth instruction. If at this time the third system variable frequency output switch 1, the cross drag switch and the fourth system variable frequency output switch 2 are closed, and the fourth system variable frequency output switch 1 and the third system variable frequency output switch 2 are both in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit;

[0078] Furthermore, when the second system is selected to start the No. 4 unit, the first system issues the eleventh instruction. If at this time the fourth system variable frequency output switch 1 and the fourth system variable frequency output switch 2 are closed, and the third system variable frequency output switch 1, the third system variable frequency output switch 2 and the cross drag switch are all in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit;

[0079] Furthermore, when the second system is selected to start the No. 3 unit, the first system issues the twelfth instruction. If at this time the fourth system frequency conversion output switch 1, the cross-drag switch and the third system frequency conversion output switch 2 are closed, and the third system frequency conversion output switch 1 and the fourth system frequency conversion output switch 2 are both in the open position, the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 1 corresponding to the No. 3 unit.

[0080] It should be noted that when the system issues an instruction, the system can obtain the real-time parameter information of the circuit after the circuit connection is completed. When the real-time parameter information meets the corresponding start-up operation, the start-up setting in the system will perform a switching operation, and the switching start-up operation corresponds to the start-up setting;

[0081] If the real-time parameter information of the circuit does not correspond to the startup operation, the startup setting in the system will switch to the opposite startup setting to ensure that the circuit is not connected. At this time, an error alarm will be issued and the inspection personnel will inspect and adjust the circuit connection.

[0082] It should be noted that the SFC system selects different startup schemes according to the on-site wiring method. Different startup schemes are pre-programmed. By selecting different control words to correspond to different startup schemes, the startup mode control can be performed by remotely sending the scheme selection control.

[0083] It should be noted that the first instruction is an instruction for closing the first switch, the second instruction is an instruction for closing the second switch, the third instruction is an instruction for connecting the first contact of the first circuit breaker, the fourth instruction is an instruction for connecting the second contact of the first circuit breaker, the fifth instruction is an instruction for closing the first system variable frequency output switch 1, the sixth instruction is an instruction for closing the first system variable frequency output switch 2, the seventh instruction is an instruction for closing the second system variable frequency output switch 2, the eighth instruction is an instruction for closing the second system variable frequency output switch 1, the ninth instruction is an instruction for closing the third system variable frequency output switch 1 and the third system variable frequency output switch 2, the tenth instruction is an instruction for closing the third system variable frequency output switch 1, the cross-drag switch and the fourth system variable frequency output switch 2, the eleventh instruction is an instruction for closing the fourth system variable frequency output switch 1 and the fourth system variable frequency output switch 2, and the twelfth instruction is an instruction for closing the fourth system variable frequency output switch 1, the cross-drag switch and the third system variable frequency output switch 2.

[0084] Step 106, implementing SFC startup control switching according to different control schemes.

[0085] An SFC startup control switching system adapted to different main wiring modes, characterized in that it includes a first selection module, a second selection module and a switching implementation module,

[0086] A first selection module, the first selection module is used to select different logic control modes according to the SFC system configured with the generator set and the configuration method with the generator set;

[0087] The second selection module is used to select different control schemes under the corresponding logic control mode according to different logic control modes and in combination with the unit start-up instructions;

[0088] The switching implementation module is used to implement SFC startup control switching according to different control schemes.

[0089] The above-mentioned unit modules may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to the above-mentioned modules.

[0090] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 6As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, an SFC startup control switching method that adapts to different main wiring methods is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse, etc.

[0091] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0092] Select different logic control modes according to the SFC system configured with the generator set and its configuration with the generator set;

[0093] According to different logic control modes and combined with the unit start-up instructions, select different control schemes under the corresponding logic control mode;

[0094] Realize SFC startup control switching according to different control schemes.

[0095] Example 2

[0096] Reference Figure 1-6 , which is an embodiment of the present invention, provides an SFC startup control switching method and system that adapts to different main wiring modes. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through comparative experiments.

[0097] Table 1 Record of some startup times

[0098]

[0099] The present invention proposes an SFC starting control switching method and system that are adaptable to different main wiring modes, accurately classifies the situations of starting different generator sets by different SFC systems, realizes flexible switching of the system when a primary wiring changes, upgrades and optimizes the starting procedure of the SFC control system, and makes it unnecessary for equipment technical service personnel to be on-site to upgrade boards and change programs, which greatly facilitates the upgrade and optimization as well as equipment maintenance of power generation enterprises.

[0100] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0101] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiments of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0102] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0103] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0104] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0105] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0106] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A SFC startup control switching method adapted to different main wiring modes, characterized in that: include, Select different logic control modes according to the SFC system configured with the generator set and its configuration with the generator set; According to the different logic control modes, combined with the unit start-up instructions, select different control schemes under the corresponding logic control mode; Realize SFC startup control switching according to different control schemes; The selection of different logic control modes includes a first logic control mode and a second logic control mode, The first logic control mode is a one-to-two starting mode. When the number of SFC systems is 1 and the number of generator sets is 2, the first logic control mode is adopted. In the first logic control mode, if any generator set is No. 1, the other one is No.

2. The second logic control mode is the cross-drag mode. When the number of SFC systems is 2 and the number of generator sets is 2, the second logic control mode is adopted. In the second logic control mode, if any generator set is the No. 3 unit, the other is the No. 4 unit. In the second logic control mode, any SFC system is the first system and the second system. The equipment capacity of the above two SFC systems can meet the drag requirements of two units; The unit start-up instructions include a No. 1 unit start-up instruction, a No. 2 unit start-up instruction, a No. 3 unit start-up instruction, and a No. 4 unit start-up instruction. The different control schemes include a first control scheme, a second control scheme, a third control scheme and a fourth control scheme, and the different control schemes each include two sets of start control constants, a start constant one and a start constant two; When the SFC start control is switched in the first logic control mode, if the first control scheme is selected, then when receiving the start command of the No. 1 machine, the SFC system issues the first command. If the first switch is closed and the second switch is disconnected at this time, the SFC system completes the connection once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the start SFC setting selects the start setting one; When receiving the start command of the second unit, the SFC system issues the second command. If the second switch is closed and the first switch is in the open position, the SFC system completes the connection once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the SFC setting is started to select the start setting 2. When the SFC start control is switched under the first logic control mode, if the second control scheme is selected, then when receiving the start command of the No. 1 unit, the SFC system issues a third command. If at this time the first contact of the first circuit breaker is connected to the circuit, and the first contact of the first circuit breaker and the second contact of the first circuit breaker are reliably disconnected, then the SFC connection is completed once. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the SFC setting is started to select the start setting one. After the SFC system exits, the SFC system is grounded after the first circuit breaker's No. 0 contact is connected to the circuit. When receiving the start-up command of unit No. 2, the SFC system issues the fourth command. If the second contact of the first circuit breaker is connected to the circuit and the zeroth contact of the first circuit breaker and the first contact of the first circuit breaker are reliably disconnected, the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the SFC constant is started and the start constant two is selected.

2. The SFC startup control switching method adapted to different main wiring modes according to claim 1, characterized in that: The different control schemes also include: When the SFC startup control is switched under the second logic control mode, if the third control scheme is selected, then when the first system starts the No. 3 unit, the first system issues the fifth instruction. If at this time the first system variable frequency output switch 1 is closed, and the first system variable frequency output switch 2, the second system variable frequency output switch 1 and the second system variable frequency output switch 2 are all in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup SFC setting is switched to the startup setting 1 corresponding to the No. 3 unit; When the first system is selected to start the No. 4 unit, the first system issues the sixth instruction. If the first system variable frequency output switch 2 is closed at this time, and the first system variable frequency output switch 1, the second system variable frequency output switch 1 and the second system variable frequency output switch 2 are all in the open position, then the SFC connection is completed once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit. When the second system is selected to start the No. 4 unit, the first system issues the seventh instruction. If the second system variable frequency output switch 2 is closed at this time, and the second system variable frequency output switch 1, the first system variable frequency output switch 1 and the first system variable frequency output switch 2 are all in the open position, then the SFC connection is completed once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit. When the second system is selected to start the No. 3 unit, the first system issues the eighth instruction. If the second system frequency conversion output switch 1 is closed at this time, and the second system frequency conversion output switch 2, the first system frequency conversion output switch 1 and the first system frequency conversion output switch 2 are all in the open position, the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 1 corresponding to the No. 3 unit.

3. The SFC startup control switching method adapted to different main wiring modes as claimed in claim 2, characterized in that: The different control schemes also include: When the SFC startup control is switched under the second logic control mode, if the fourth control scheme is selected, then when the first system starts the No. 3 unit, the first system issues the ninth instruction. If at this time the third system variable frequency output switch 1 and the third system variable frequency output switch 2 are closed, and the fourth system variable frequency output switch 1, the fourth system variable frequency output switch 2 and the cross-drag switch are all in the open position, then the SFC connection is completed once, and the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup SFC setting is switched to the startup setting 1 corresponding to the No. 3 unit; When the first system is selected to start the No. 4 unit, the first system issues the tenth instruction. If the third system variable frequency output switch 1, the cross-drag switch and the fourth system variable frequency output switch 2 are closed at this time, and the fourth system variable frequency output switch 1 and the third system variable frequency output switch 2 are both in the open position, then the SFC connection is completed once. At the same time, the SFC system verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit. When the second system is selected to start the No. 4 unit, the first system issues the eleventh instruction. If the fourth system variable frequency output switch 1 and the fourth system variable frequency output switch 2 are closed at this time, and the third system variable frequency output switch 1, the third system variable frequency output switch 2 and the cross drag switch are all in the open position, then the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 2 corresponding to the No. 4 unit; When the second system is selected to start the No. 3 unit, the first system issues the twelfth instruction. If at this time the fourth system frequency conversion output switch 1, the cross-drag switch and the third system frequency conversion output switch 2 are closed, and the third system frequency conversion output switch 1 and the fourth system frequency conversion output switch 2 are both in the open position, the SFC connection is completed at one time. At the same time, the SFC system judges and verifies the circuit parameters after the connection. If the verification is successful, the startup setting is switched to the startup setting 1 corresponding to the No. 3 unit.

4. The SFC startup control switching method adapted to different main wiring modes as claimed in claim 3, characterized in that: The different control schemes also include: When the system issues an instruction, the system can obtain the real-time parameter information of the circuit after the circuit connection is completed. When the real-time parameter information meets the corresponding startup operation, the startup setting in the system will perform the switching operation, and the switching startup operation corresponds to the startup setting; If the real-time parameter information of the circuit does not correspond to the startup operation, the startup setting in the system will switch to the opposite startup setting to ensure that the circuit is not connected. At this time, an error alarm will be issued and the inspection personnel will inspect and adjust the circuit connection.

5. The SFC startup control switching method adapted to different main wiring modes as claimed in claim 4, characterized in that: The different control schemes also include: The SFC system selects different startup schemes according to the on-site wiring method. Different startup schemes are pre-programmed. By selecting different control words to correspond to different startup schemes, the startup mode can be controlled by remotely sending the scheme selection control.

6. A system using the SFC startup control switching method adapted to different main wiring modes as claimed in claim 1, characterized in that: It includes a first selection module, a second selection module and a switching implementation module, A first selection module, the first selection module is used to select different logic control modes according to the SFC system configured with the generator set and the configuration mode with the generator set; A second selection module, the second selection module is used to select different control schemes under the corresponding logic control mode according to the different logic control modes and in combination with the unit start-up instruction; A switching implementation module is used to implement SFC startup control switching according to different control schemes.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

Images