High-voltage direct-current power transmission dynamic control method and system for fixed tap switch gear
A high-voltage direct current transmission and tap changer technology, which is applied in the direction of power transmission AC network, reactive power adjustment/elimination/compensation, reactive power compensation, etc., can solve problems such as reducing service life, improve service life and avoid frequent operations Effect
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Embodiment 1
[0030] In one or more embodiments, a method for dynamic control of HVDC power transmission with fixed tap changer position is disclosed, refer to figure 1 , including the following process:
[0031] (1) Based on the requirements of the DC system for the control angle of the converter valve, the trigger angle of the rectifier side, and the arc extinguishing angle of the inverter side, the initial gear positions of the converter transformer tap-changer on the rectifier side and the inverter side are respectively determined;
[0032] Specifically, for a fixed transformation ratio, the initial gear position of the converter tap-changer directly determines the control angle of the converter valve in extreme cases. In order to ensure reliable triggering or shutdown of the converter valve, the control angle should not be less than a certain minimum value; in order to avoid excessive reactive power consumption and reduce valve stress, the control angle should not increase without limi...
Embodiment 2
[0057] In one or more implementations, a high-voltage direct current transmission dynamic control system for determining the gear position of a tap changer is disclosed, including:
[0058] The initial gear position determination module of the tap changer is used to determine the tap changer position of the converter transformer on the rectifier side and the inverter side based on the requirements of the DC system for the control angle of the converter valve, the trigger angle of the rectifier side, and the arc extinguishing angle of the inverter side. the initial gear;
[0059] The fast control module is used to keep the initial gear position of the tap changer unchanged, perform fast control of the DC power based on the issued DC power command, and obtain the trigger angle of the rectifier side and the trigger angle of the inverter side;
[0060] The slow control module is configured to match the filter switching amount under the current DC power command based on the filter ...
Embodiment 3
[0063] In one or more embodiments, a terminal device is disclosed, including a server, the server includes a memory, a processor, and a computer program stored on the memory and operable on the processor, and the processor executes the The program realizes the dynamic control method of the high-voltage direct current transmission of the fixed tap changer position in the first embodiment. For the sake of brevity, details are not repeated here.
[0064] It should be understood that in this embodiment, the processor can be a central processing unit CPU, and the processor can also be other general-purpose processors, digital signal processors DSP, application specific integrated circuits ASIC, off-the-shelf programmable gate array FPGA or other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
[0065] The ...
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