Method and system for starting and exciting an ac excitation phase modifier

Abstract

The application discloses an AC excitation phase modifier starting and excitation method and system, and belongs to the technical field of motors and electrical appliances. The method comprises the following steps: determining the power supply condition of a phase modifier and determining the wiring state of an AC excitation system; before the phase modifier is connected to a power grid, it is determined whether the wiring state meets the starting condition of the phase modifier; if yes, the isolating switch of the AC excitation system is adjusted to start the phase modifier and connect the phase modifier to the power grid; and after the phase modifier is successfully connected to the power grid, the isolating switch of the AC excitation system is adjusted again to excite the phase modifier. The application improves the utilization rate and reliability of equipment.

Description

Technical Field

[0001] This invention relates to the field of motor and electrical appliance technology, and more specifically, to a method and system for starting and exciting an AC excitation synchronous condenser. Background Technology

[0002] New distributed synchronous condensers (SCDCs) are expected to effectively address the issues of renewable energy absorption and grid stability in renewable energy regions by providing local reactive power compensation and inertia support, and are currently one of the main technical solutions. While new distributed SCDCs can provide 4-5 times their rated short-circuit capacity to the system, their rotational inertia is only 30%-50% of that of generator sets of the same capacity. Considering that the capacity of SCDCs is typically only 25% of the rated capacity of the renewable energy power plants or distributed energy sources they support, their inertia support capability for the system is relatively limited.

[0003] Furthermore, with the release of GB 38755, primary frequency regulation for renewable energy power plants will face more stringent assessments. Reserved backup capacity or the addition of energy storage devices to participate in primary frequency regulation may be the main technological direction for the future. However, reserving backup capacity will undoubtedly reduce the effective utilization hours of renewable energy, resulting in poor economic benefits. Currently, energy storage suitable for renewable energy power plants mainly includes two types: electrical energy storage and mechanical energy storage. Flywheel mechanical energy storage has a long service life and is suitable for applications requiring frequent regulation, but its storage capacity is usually small. Electrical energy storage has a larger capacity, but frequent charging and discharging will severely affect its service life. Therefore, a combination of mechanical and electrical energy storage is more in line with the technological direction of primary frequency regulation for renewable energy.

[0004] Traditional synchronous condensers, besides lacking inertia support capabilities for renewable energy power plants, are also unable to provide primary frequency regulation support. High-inertia energy storage synchronous condensers employing AC excitation combine the dynamic voltage and inertia support functions of traditional synchronous condensers. Furthermore, through active speed regulation, they can absorb or release more active power in short periods to participate in primary frequency regulation. This combination of synchronous condenser and flywheel energy storage can provide a certain amount of primary frequency regulation power to the grid, improving the primary frequency regulation characteristics of renewable energy power plants, and is expected to become the mainstream technological development direction.

[0005] Currently, traditional synchronous condensers are typically started using static frequency converters (SFCs), which are expensive and can only be used for starting, resulting in very low equipment utilization. Summary of the Invention

[0006] To address the above problems, this invention proposes a method for starting and exciting an AC excitation phase condenser, comprising:

[0007] Determine the power supply status of the synchronous condenser and the wiring status of the AC excitation system;

[0008] Before the synchronous condenser is connected to the grid, it is determined that the wiring status meets the starting conditions of the synchronous condenser.

[0009] If the conditions are met, adjust the isolation switch of the AC excitation system to start the synchronous condenser and connect it to the grid;

[0010] After successful grid connection, the isolation switch of the AC excitation system is adjusted again to excite the synchronous condenser.

[0011] Optionally, the power supply status of the synchronous condenser includes: the power supply status of the high-voltage plant auxiliary power supply and the power supply status of the generator terminal bus.

[0012] Optionally, regarding the power supply of the synchronous condenser, if it is supplied by high-voltage plant power, and the grid-connected circuit breaker is in the open state, if the starting conditions are met, the disconnecting switch of the AC excitation system is adjusted, including:

[0013] Close the isolating switch K1, disconnect the isolating switch K3 of the excitation winding and put the excitation winding in a short-circuit state, and close the isolating switch K2 of the excitation winding.

[0014] Optionally, regarding the power supply of the synchronous condenser, if it is supplied by high-voltage plant power, after successful grid connection, the isolating switch of the AC excitation system is readjusted to excite the synchronous condenser, including:

[0015] After the synchronous condenser speed is gradually increased to above the rated speed by the frequency conversion control of the excitation converter system, the isolation switch K2 of the excitation winding is disconnected, so that the synchronous condenser rotor enters the coasting speed reduction stage, and the isolation switch K3 of the excitation winding is closed, and the working mode of the AC excitation system is switched to excitation mode.

[0016] Optionally, regarding the power supply of the synchronous condenser, if it is powered by the generator terminal bus, and the high-voltage side circuit breaker is in the closed state, the starting conditions are met. The AC excitation system can supply power to the stator or rotor winding of the synchronous condenser through isolating switches K1, K2 and K3 to start the synchronous condenser, connect it to the grid and excite it.

[0017] Furthermore, this invention also proposes a system for starting and exciting an AC excitation phase condenser, comprising:

[0018] The initial unit is used to determine the power supply status of the synchronous condenser and the wiring status of the AC excitation system;

[0019] The judgment unit is used to determine, before the synchronous condenser is connected to the grid, whether the wiring status meets the starting conditions of the synchronous condenser.

[0020] The starting and excitation unit is used to adjust the isolating switch of the AC excitation system to start the synchronous condenser and connect it to the grid after the wiring state meets the starting conditions of the synchronous condenser. After successful grid connection, the isolating switch of the AC excitation system is adjusted again to excite the synchronous condenser.

[0021] Optionally, the power supply status of the synchronous condenser includes: the power supply status of the high-voltage plant auxiliary power supply and the power supply status of the generator terminal bus.

[0022] Optionally, regarding the power supply of the synchronous condenser, if it is supplied by high-voltage plant power, and the grid-connected circuit breaker is in the open state, if the starting conditions are met, the disconnecting switch of the AC excitation system is adjusted, including:

[0023] Close the isolating switch K1, disconnect the isolating switch K3 of the excitation winding and put the excitation winding in a short-circuit state, and close the isolating switch K2 of the excitation winding.

[0024] Optionally, regarding the power supply of the synchronous condenser, if it is supplied by high-voltage plant power, after successful grid connection, the isolating switch of the AC excitation system is readjusted to excite the synchronous condenser, including:

[0025] After the synchronous condenser speed is gradually increased to above the rated speed by the frequency conversion control of the excitation converter system, the isolation switch K2 of the excitation winding is disconnected, so that the synchronous condenser rotor enters the coasting speed reduction stage, and the isolation switch K3 of the excitation winding is closed, and the working mode of the AC excitation system is switched to excitation mode.

[0026] Optionally, regarding the power supply of the synchronous condenser, if it is powered by the generator terminal bus, and the high-voltage side circuit breaker is in the closed state, the starting conditions are met. The AC excitation system can supply power to the stator or rotor winding of the synchronous condenser through isolating switches K1, K2 and K3 to start the synchronous condenser, connect it to the grid and excite it.

[0027] In another aspect, the present invention also provides a computing device, comprising: one or more processors;

[0028] A processor is used to execute one or more programs;

[0029] When the one or more programs are executed by the one or more processors, the method described above is implemented.

[0030] In another aspect, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed, implements the method described above.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] This invention proposes a method for starting and exciting an AC-excited synchronous condenser, comprising: determining the power supply status of the synchronous condenser and the wiring status of the AC excitation system; before the synchronous condenser is connected to the grid, determining that the wiring status meets the starting conditions of the synchronous condenser; if so, adjusting the isolating switch of the AC excitation system to start the synchronous condenser and achieve grid connection; after successful grid connection, adjusting the isolating switch of the AC excitation system again to excite the synchronous condenser. This invention improves equipment utilization and reliability. Attached Figure Description

[0033] Figure 1 This is a flowchart of the method of the present invention;

[0034] Figure 2 A schematic diagram of the electrical wiring of the camera under high-voltage plant power supply during normal operation, for implementing the method of the present invention;

[0035] Figure 3 This is a schematic diagram of the electrical wiring when the camera is started under high-voltage plant power supply conditions, which is an implementation of the method of the present invention.

[0036] Figure 4 A schematic diagram of the electrical wiring for adjusting the camera to normal operation under the condition of power supply from the terminal bus for implementing the method of the present invention;

[0037] Figure 5 A schematic diagram of the electrical wiring for adjusting the camera to normal operation under the condition of power supply from the terminal bus for implementing the method of the present invention;

[0038] Figure 6 A schematic diagram of the electrical wiring when adjusting the camera startup under bus power supply conditions for implementing the method of the present invention;

[0039] Figure 7 This is a structural diagram of the system of the present invention. Detailed Implementation

[0040] Exemplary embodiments of the invention will now be described with reference to the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0041] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0042] Example 1:

[0043] This invention proposes a method for starting and exciting an AC-excited synchronous condenser, such as... Figure 1 As shown, it includes:

[0044] Step 1: Determine the power supply status of the synchronous condenser and the wiring status of the AC excitation system;

[0045] Step 2: Before the synchronous condenser is connected to the grid, determine that the wiring status meets the starting conditions of the synchronous condenser;

[0046] Step 3: If the conditions are met, adjust the isolation switch of the AC excitation system to start the synchronous condenser and connect it to the grid.

[0047] Step 4: After successful grid connection, readjust the isolation switch of the AC excitation system to excite the synchronous condenser.

[0048] The power supply status of the synchronous condenser includes: the power supply status of the high-voltage plant auxiliary power supply and the power supply status of the generator terminal bus.

[0049] Regarding the power supply of the synchronous condenser, if it is supplied by high-voltage plant power, and the grid-connected circuit breaker is in the open state, the starting conditions are met, and the disconnecting switch of the AC excitation system is adjusted, including:

[0050] Close the isolating switch K1, disconnect the isolating switch K3 of the excitation winding and put the excitation winding in a short-circuit state, and close the isolating switch K2 of the excitation winding.

[0051] Regarding the power supply status of the synchronous condenser, if it is supplied by high-voltage plant power, after successful grid connection, the isolating switch of the AC excitation system is adjusted again to excite the synchronous condenser, including:

[0052] After the synchronous condenser speed is gradually increased to above the rated speed by the frequency conversion control of the excitation converter system, the isolation switch K2 of the excitation winding is disconnected, so that the synchronous condenser rotor enters the coasting speed reduction stage, and the isolation switch K3 of the excitation winding is closed, and the working mode of the AC excitation system is switched to excitation mode.

[0053] Regarding the power supply of the synchronous condenser, if it is powered by the generator terminal bus, and the high-voltage side circuit breaker is in the closed state, the starting conditions are met. The AC excitation system can supply power to the stator or rotor winding of the synchronous condenser through isolating switches K1, K2 and K3 to start the synchronous condenser, connect it to the grid and excite it.

[0054] The present invention will be further described below with reference to embodiments:

[0055] High-inertia energy storage synchronous condensers use AC excitation, and the rotor winding consists of three-phase windings. Their excitation system can adopt an AC-DC-AC topology. When the excitation power supply is taken from the high-voltage plant auxiliary power bus, the electrical wiring diagram for normal operation and startup of the synchronous condenser is as follows: Figure 2 , 3 As shown.

[0056] Figure 2 In normal operation, the synchronous condenser is connected to the power grid system through the high-voltage side of the step-up transformer. The excitation system of the synchronous condenser is powered by the high-voltage plant auxiliary power or the bus at the condenser terminal, and is connected to the excitation system converter through the isolation transformer. The grid side is a three-phase bridge PWM rectifier circuit, and the machine side is a three-phase bridge PWM inverter circuit, which are connected to the three-phase excitation windings a, b, and c respectively to provide excitation current to the synchronous condenser.

[0057] Before the synchronous condenser is connected to the grid, the grid-connected circuit breaker is in the open state. When the synchronous condenser starts, the excitation winding switch K3 is opened, and the excitation winding is short-circuited (K3 is a three-pole double-throw switch). The K2 switch is closed, connecting the stator three-phase winding to the three-phase bridge arm of the inverter side of the converter. At this time, the grid-side rectifier and the machine-side inverter form a complete AC-DC-AC converter. Through the frequency conversion control of the converter, the speed of the synchronous condenser can be gradually increased to above the rated speed. Then, the K2 switch is opened to allow the synchronous condenser rotor to enter the coasting and deceleration stage. The K3 switch is then closed. Figure 2 As shown. Switch the converter's operating mode to excitation mode, rapidly increasing the excitation current to bring the synchronous condenser to its rated voltage. During the synchronous condenser's coasting period, grid connection is completed via an automatic synchronizing device. After successful grid connection, the excitation system can be adjusted according to the grid's needs.

[0058] When the excitation power supply is taken from the generator terminal bus, the electrical wiring diagram for normal operation and startup of the synchronous condenser is as follows: Figure 3 , 4 As shown.

[0059] exist Figure 4 , 5 In the process, the grid-connected circuit breaker is located on the low-voltage side of the step-up transformer of the synchronous condenser. The high-voltage side circuit breaker is in the closed state during normal operation and before startup. The excitation system can supply power to the stator or rotor winding of the synchronous condenser at any time through the disconnecting switch.

[0060] The high-inertia energy storage type synchronous condenser excitation system topology proposed in this invention can achieve normal excitation regulation, and also has the ability to drive the synchronous condenser, realizing the function of a static frequency converter (SFC).

[0061] The integrated start-excitation design proposed in this invention fully taps the potential of the excitation system, eliminates the investment in the synchronous condenser start-up system (SFC), and has a promising market application prospect.

[0062] This invention significantly simplifies the primary equipment, making the design of high-inertia energy storage systems more compact and reasonable, and improving equipment utilization and reliability.

[0063] During the startup of the synchronous condenser, the generator terminals cannot provide power. Therefore, the excitation system should be powered by high-voltage plant auxiliary power during startup, and the excitation power supply should be switched after startup is completed. Figure 6 As shown.

[0064] by Figure 5 For example, before the synchronous condenser is started and connected to the grid, the high-voltage circuit breaker is in the open state, the isolating switch K1 is connected to the high-voltage plant power bus, the K2 switch is closed, and the converter is connected to the stator winding; the excitation winding switch K3 is open, and the excitation winding is in a short-circuit state. The excitation system converter controls the stator power supply voltage and frequency of the synchronous condenser, slowly dragging the synchronous condenser to rotate until it reaches 105% of the rated speed. The K2 switch is opened, and then the K3 switch is closed, switching the K1 switch to the generator terminal bus for power supply, and switching the operating mode of the excitation converter to the excitation state. At this time, the stator winding of the synchronous condenser has a certain residual voltage, which supplies power to the excitation system through the residual voltage, rapidly increasing the excitation current and raising the stator voltage, forming a positive voltage feedback, and quickly raising the voltage to near the rated voltage. Then, the automatic synchronizing device captures the appropriate closing point according to the voltage, phase, and frequency difference across the circuit breaker, realizing the unit's grid connection. Then, the excitation current is adjusted according to the system's reactive power demand for stable operation.

[0065] Example 2:

[0066] This invention also proposes a system 200 for starting and excitation of an AC excitation synchronous condenser, such as... Figure 7 As shown, it includes:

[0067] The initial unit 201 is used to determine the power supply status of the synchronous condenser and the wiring status of the AC excitation system;

[0068] The judgment unit 202 is used to determine, before the synchronous condenser is connected to the grid, that the wiring status meets the starting conditions of the synchronous condenser.

[0069] The starting and excitation unit 203 is used to adjust the isolating switch of the AC excitation system to start the synchronous condenser and connect it to the grid after the wiring state meets the starting conditions of the synchronous condenser. After successful grid connection, the isolating switch of the AC excitation system is adjusted again to excite the synchronous condenser.

[0070] The power supply status of the synchronous condenser includes: the power supply status of the high-voltage plant auxiliary power supply and the power supply status of the generator terminal bus.

[0071] Regarding the power supply of the synchronous condenser, if it is supplied by high-voltage plant power, and the grid-connected circuit breaker is in the open state, the starting conditions are met, and the disconnecting switch of the AC excitation system is adjusted, including:

[0072] Close the isolating switch K1, disconnect the isolating switch K3 of the excitation winding and put the excitation winding in a short-circuit state, and close the isolating switch K2 of the excitation winding.

[0073] Regarding the power supply status of the synchronous condenser, if it is supplied by high-voltage plant power, after successful grid connection, the isolating switch of the AC excitation system is adjusted again to excite the synchronous condenser, including:

[0074] After the synchronous condenser speed is gradually increased to above the rated speed by the frequency conversion control of the excitation converter system, the isolation switch K2 of the excitation winding is disconnected, so that the synchronous condenser rotor enters the coasting speed reduction stage, and the isolation switch K3 of the excitation winding is closed, and the working mode of the AC excitation system is switched to excitation mode.

[0075] Regarding the power supply of the synchronous condenser, if it is powered by the generator terminal bus, and the high-voltage side circuit breaker is in the closed state, the starting conditions are met. The AC excitation system can supply power to the stator or rotor winding of the synchronous condenser through isolating switches K1, K2 and K3 to start the synchronous condenser, connect it to the grid and excite it.

[0076] This invention improves equipment utilization and reliability.

[0077] Example 3:

[0078] Based on the same inventive concept, this invention also provides a computer device, which includes a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions in the computer storage medium to implement corresponding method flows or corresponding functions, thereby implementing the steps of the methods in the above embodiments.

[0079] Example 4:

[0080] Based on the same inventive concept, this invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and extended storage media supported by the computer device. The computer-readable storage medium provides storage space that stores the terminal's operating system. Furthermore, this storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be high-speed RAM or non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the steps of the method in the above embodiments.

[0081] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take 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.) containing computer-usable program code. The solutions in the embodiments of the present invention can be implemented using various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0082] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0083] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0084] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0085] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0086] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method of starting and exciting an AC excitation phase modifier, characterized by, The phase modifier starting and excitation method comprises: determining the power supply condition of the phase modifier and determining the wiring state of the AC excitation system; before the phase modifier is connected to the grid, determining whether the wiring state meets the starting condition of the phase modifier; if yes, adjusting the disconnecting switch of the AC excitation system to start the phase modifier and connect the phase modifier to the grid; after successful connection to the grid, adjusting the disconnecting switch of the AC excitation system to excite the phase modifier. if the power supply condition of the phase modifier is high-voltage plant power supply, when the wiring state is that the grid connection breaker is in the open state, the starting condition is met, and the disconnecting switch of the AC excitation system is adjusted, comprising: closing the disconnecting switch K1, opening the disconnecting switch K3 of the excitation winding, and making the excitation winding in a short-circuit state, and closing the disconnecting switch K2 of the excitation winding. after successful connection to the grid, adjusting the disconnecting switch of the AC excitation system to excite the phase modifier, comprising: after the speed of the phase modifier is gradually increased to above the rated speed through frequency conversion control of the excitation converter system, opening the disconnecting switch K2 of the excitation winding, making the rotor of the phase modifier enter a coasting speed reduction stage, closing the disconnecting switch K3 of the excitation winding, and switching the working mode of the AC excitation system to an excitation mode. if the power supply condition of the phase modifier is machine terminal bus power supply, when the wiring state is that the high-voltage side breaker is in the closed state, the starting condition is met, and the AC excitation system can supply power to the stator or rotor winding of the phase modifier through the disconnecting switches K1, K2 and K3 to start, connect to the grid and excite the phase modifier.

2. The method of starting and exciting a phase modifier according to claim 1, wherein The power supply condition of the phase modifier comprises high-voltage plant power supply and machine terminal bus power supply.

3. A system for starting and exciting an AC excitation phase modifier, characterized by The phase modifier starting and excitation system comprises: an initial unit for determining the power supply condition of the phase modifier and determining the wiring state of the AC excitation system; a judging unit for determining whether the wiring state meets the starting condition of the phase modifier before the phase modifier is connected to the grid; a starting and excitation unit for adjusting the disconnecting switch of the AC excitation system to start the phase modifier and connect the phase modifier to the grid when the wiring state meets the starting condition of the phase modifier, and adjusting the disconnecting switch of the AC excitation system to excite the phase modifier after successful connection to the grid. if the power supply condition of the phase modifier is high-voltage plant power supply, when the wiring state is that the grid connection breaker is in the open state, the starting condition is met, and the disconnecting switch of the AC excitation system is adjusted, comprising: closing the disconnecting switch K1, opening the disconnecting switch K3 of the excitation winding, and making the excitation winding in a short-circuit state, and closing the disconnecting switch K2 of the excitation winding. after successful connection to the grid, adjusting the disconnecting switch of the AC excitation system to excite the phase modifier, comprising: After the step-up of the speed of the phase modifier to above the rated speed by the variable frequency control of the excitation converter system, the disconnecting switch K2 of the excitation winding is opened, the phase modifier rotor enters the coasting speed-down stage, the disconnecting switch K3 of the excitation winding is closed, and the working mode of the AC excitation system is switched to the excitation mode. The power supply condition of the phase modifier includes the high-voltage auxiliary power supply condition and the generator terminal bus power supply condition.

4. The phase modifier starting and excitation system of claim 3, wherein The power supply condition of the phase modifier includes the high-voltage auxiliary power supply condition and the generator terminal bus power supply condition.

5. A computer device, comprising: Comprise: One or more processors; A processor for executing one or more programs; When the one or more programs are executed by the one or more processors, the method as claimed in any one of claims 1-2 is implemented.

6. A computer-readable storage medium, characterized in that, A computer program is stored thereon, which is executed to implement the method as claimed in any one of claims 1-2.

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