自动调节励磁的组成部件有机端电压互感器、机端电流互感器、励磁变压器;励磁装置需要提供以下电流，厂用AC380v、厂用DC220v控制电源厂用DC220v合闸电源;需要提供以下空接点，自动开机.自动停机.并网(一常开, – -常闭)增,减;需要提供以下模拟信号，发电机机端电压100V,发电机机端电流5A,母线电压100V,励磁装置输出以下继电器接点信号;励磁变过流，失磁,励磁装置异常等。励磁控制、保护及信号回路由灭磁开关，助磁电路、风机、灭磁开关偷跳、励磁变过流、调节器故障、发电机工况异常、电变送器等组成。
KUC755AE105
在同步发电机发生内部故障时除了必须解列外，还必须灭磁，把转子磁场尽快地减弱到最小程度,保证转子不过的情况下，使灭磁时间尽可能缩短，题磁装置的主要功能。根据额定励磁电压的大小可分为线性电阻灭磁和非线性电阻灭磁。由于采用微机计算机用软件实现的自动调节励磁装置有显著优点，很多国家都在研制和试验用微型机计算机配以相应的外部设备构成的数字自动调节励磁装置，这种调节装置将能实现自适应最佳调节。
KUC755AE105
The components of automatic excitation regulation include organic terminal voltage transformer, machine terminal current transformer, and excitation transformer; The excitation device needs to provide the following current: auxiliary AC380v, auxiliary DC220V control power supply, auxiliary DC220V closing power supply; The following empty contacts need to be provided: automatic start, automatic stop, grid connection (one normally open, – normally closed) increase and decrease; The following analog signals need to be provided: the generator terminal voltage is 100V, the generator terminal current is 5A, the bus voltage is 100V, and the excitation device outputs the following relay contact signals; Excitation transformer overcurrent, loss of excitation, abnormal excitation device, etc. The excitation control, protection, and signal circuit consists of a deexcitation switch, auxiliary circuit, fan, deexcitation switch tripping, excitation transformer overcurrent, regulator failure, abnormal generator operating conditions, electrical transmitter, etc.
KUC755AE105
When an internal fault occurs in a synchronous generator, in addition to being disconnected, it is also necessary to deexcite and reduce the rotor magnetic field to the minimum extent as soon as possible, ensuring that the rotor cannot pass through and shortening the deexcitation time as much as possible. This is the main function of the deexcitation device. According to the rated excitation voltage, it can be divided into linear resistance demagnetization and nonlinear resistance demagnetization. Due to the significant advantages of using microcomputer software to achieve automatic regulation excitation devices, many countries are developing and testing digital automatic regulation excitation devices composed of microcomputer computers and corresponding external equipment. This regulation device will achieve adaptive optimal regulation.
KUC755AE105
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KUC755AE105
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