Abstract:
PURPOSE: An apparatus for generating a control signal of a thyristor of exciting system is provided to generate stably a control signal by detecting a phase of supply voltage and generating the firing signal of thyristor. CONSTITUTION: An amplification portion(1) is used for amplifying three phase supply voltage. An A/D conversion portion(2) is used for converting the three phase supply voltage received through the amplification portion(1) to digital values. A CPU(3) detects phases of the three phase supply voltage by processing three phase supply voltage values of the A/D conversion portion(2) and generates a firing signal of a thyristor according to the detected value. A D/A conversion portion(4) converts the firing signal of the A/D conversion portion(2) to an analog signal and outputs a cosine signal. An analog output circuit(5) provides an analog firing signal of the D/A conversion portion(4) to the thyristor.
Abstract translation:目的:提供一种用于产生激励系统的晶闸管的控制信号的装置,用于通过检测电源电压的相位并产生晶闸管的激发信号来稳定地产生控制信号。 构成:放大部分(1)用于放大三相电源电压。 A / D转换部分(2)用于将通过放大部分(1)接收的三相电源电压转换为数字值。 CPU(3)通过处理A / D转换部分(2)的三相电源电压值来检测三相电源电压的相位,并根据检测值产生晶闸管的触发信号。 D / A转换部分(4)将A / D转换部分(2)的触发信号转换为模拟信号并输出余弦信号。 模拟输出电路(5)将D / A转换部分(4)的模拟触发信号提供给晶闸管。
Abstract:
PURPOSE: A control unit of an automatic voltage control system for synchronous generator is provided to enhance voltage stability by maintaining accurately voltage of the synchronous generator. CONSTITUTION: An oscillation portion(1) generates frequencies according to a fast/slow mode of a synchronous generator. A demultiplier(2) demultiplies an output signal of the oscillation portion(1) and provides a clock pulse and a count pulse to a logic network(3). The logic network(3) receives the clock pulse and the count pulse from the demultiplier(2) and generates an up/down signal or a count signal. A binary counter(4) performs a counting operation according to the up/down signal and outputs a counted result to a D/A converter portion(6). An initialization portion(5) performs an initializing process when power is applied to an analog memory control module. The D/A converter portion(6) converts an output of the binary counter(4) to an analog signal.
Abstract:
PURPOSE: An apparatus for generating a control signal of a thyristor of exciting system is provided to generate stably a control signal by detecting a phase of supply voltage and generating the firing signal of thyristor. CONSTITUTION: An amplification portion(1) is used for amplifying three phase supply voltage. An A/D conversion portion(2) is used for converting the three phase supply voltage received through the amplification portion(1) to digital values. A CPU(3) detects phases of the three phase supply voltage by processing three phase supply voltage values of the A/D conversion portion(2) and generates a firing signal of a thyristor according to the detected value. A D/A conversion portion(4) converts the firing signal of the A/D conversion portion(2) to an analog signal and outputs a cosine signal. An analog output circuit(5) provides an analog firing signal of the D/A conversion portion(4) to the thyristor.
Abstract translation:目的:提供一种用于产生激励系统的晶闸管的控制信号的装置,通过检测电源电压的相位并产生晶闸管的点火信号来稳定地产生控制信号。 构成:放大部分(1)用于放大三相电源电压。 A / D转换部分(2)用于将通过放大部分(1)接收的三相电源电压转换为数字值。 CPU(3)通过处理A / D转换部分(3)的三相电源电压值来检测三相电源电压的相位,并根据检测值产生晶闸管的点火信号。 D / A转换部分(4)将A / D转换部分(2)的触发信号转换成模拟信号并输出余弦信号。 模拟输出电路(5)向晶闸管提供D / A转换部分(4)的模拟触发信号。
Abstract:
PURPOSE: A control unit of an automatic voltage control system for synchronous generator is provided to enhance voltage stability by maintaining accurately voltage of the synchronous generator. CONSTITUTION: An oscillation portion(1) generates frequencies according to a fast/slow mode of a synchronous generator. A demultiplier(2) demultiplies an output signal of the oscillation portion(1) and provides a clock pulse and a count pulse to a logic network(3). The logic network(3) receives the clock pulse and the count pulse from the demultiplier(2) and generates an up/down signal or a count signal. A binary counter(4) performs a counting operation according to the up/down signal and outputs a counted result to a D/A converter portion(6). An initialization portion(5) performs an initializing process when power is applied to an analog memory control module. The D/A converter portion(6) converts an output of the binary counter(4) to an analog signal.
Abstract:
본 발명은 발전소에서 발전기의 단자전압을 제어하기 위한 동기 발전기용 승강압 쵸퍼식 정치형 여자 시스템에 관한 것으로서, 종래 기술의 전압원 정지형 여자시스템이 발전기의 안정 운전이 어렵고 선로 사고에 의한 입력전압 저하시에 계자 강화가 이루어지지 않았던 문제점을 해결하기 위해, 본 발명은 정상 운전 상태에서는 기존의 전압원 정지형 여자 시스템과 유사한 동작 특성 을가지지만, 계통의 3상 단락이나 지락과 같은 선로 고장으로 인한 단자 전압의 강하를 여자 전류의 확보가 곤란한 경우에는 여자 전류를 유지 하거나 강화(Field forcing)시키도록 승압 쵸파(Boost Chopper)를 이용하여 여자 입력 전압을 승압시키도록 동작한다. 정상 운전 조건에서는 발전기 단자로부터 변압기를 통하여 3상 다이오드 전파 정류기에 전원을 인가하고 이의 출력을 강압 쵸파(Buck-Chopper)를 이용하여 발전기의 단자전압을 조정하도록 여자전류를 조정하며, 선로 고장등으로 인한 여자용 입력전압 저하 시에는 3상 전파 정류기와 교류 입력 리액터, 승압용 스위칭 소자등으로 이루어지는 승압 쵸파를 동작시켜 여자 입력 전압을 승압시켜 여자 강화 능력을 향상시키도록 한다. 따라서 강압 쵸파를 이용하여 발전기의 단자 전압을 제어하고 입력전압 저하시 승압 쵸파를 이용하여 여자용 입력 전압을 승압시켜 여자 강화가 가능하도록 하는 승강압 쵸파를 이용한 정지형 여자 시스템이다.
Abstract:
PURPOSE: A device for testing a starter controller of a large capacity synchronous apparatus is provided to test the controller without operating a static frequency converting system. CONSTITUTION: A controller testing device includes a simulation device(100) and a controller. The simulation device simulates a synchronous machine, a starter to start the synchronous machine, and an excitation system. The controller receives a signal about the operation of the synchronous machine and the starter and controls the synchronous machine and the starter. The simulation device includes a simulation unit(110), an input and output signal processing unit(140) and a power source unit(160). The simulation unit models and sets the synchronous machine, the starter, and the excitation system and simulates the driving of the synchronous machine by converting the input power. The power source unit generates power for driving the simulation unit and provides the power to the simulation unit. The input and output signal processing unit inputs and outputs a signal inputted to the controller and a signal outputted from the controller. [Reference numerals] (110) Simulation unit; (130) Clock monitoring unit; (140) Input and output signal processing unit; (150) Optical signal input unit; (160) Power source unit; (170) Storage unit; (180) Communication unit
Abstract:
가스터빈 발전 시스템에 이상이 생기는 경우 그 이상 원인을 신속하게 규명할 수 있는 가스터빈 발전 시스템 감시 기술이 개시된다. 이를 위해, 본 발명에 따른 가스터빈 발전 시스템 감시 장치는 가스터빈 발전 시스템이 기동하여 정상 가동되기까지의 제어 신호를 타임차트로 패턴화하여 패턴 신호를 생성하는 패턴 신호 생성부; 상기 패턴 신호와 상기 제어 신호를 비교하는 비교부; 및 상기 비교부에 의한 상기 패턴 신호와 상기 제어 신호의 비교 결과를 사용자에게 인지시키기 위한 출력부를 포함한다. 따라서, 본 발명에 따른 가스터빈 발전 시스템 감시 장치는 가스터빈 발전 시스템에 이상이 발생하는 경우 이상 복구를 조속히 완료 가능하여 발전소 설비의 이용률을 극대화할 수 있다.
Abstract:
PURPOSE: An auto voltage adjusting device is provided to have a simulator, thereby performing various tests when a generator does not operate under the same conditions as the conditions when the generator operates. CONSTITUTION: A bottled inflow breaker(130), a main transformer(150), and a breaker are installed between a generator(100) and a power system(160). Power generated in the generator is supplied to a power system through the breaker. A rectifier(400) includes a first switch(490), a thyristor(440), a field breaker(450), and an AC breaker(430). The AC breaker is formed in the input terminal of the rectifier to break power. The field breaker is formed in the output terminal of the rectifier to break power.
Abstract:
PURPOSE: An emergency diesel generator digital excitation system of a nuclear power plant, an operation mode changing method, and a rapid starting method thereof are provided to increase the reliability of a facility by comprising a three channel controller and a two channel rectifier. CONSTITUTION: An input and output signal processing unit(40) outputs a standard signal corresponding to an input module of a triplication controller(60). The triplication controller controls the voltage of a generator terminal. First and second rectifiers(1-1,1-2) receive a thyristor on signal and turns on the gate of the thyristor. First and second switches(72-1,72-2) switch the input terminal of the first and second rectifiers. An initial excitation resistor drops 125V storage voltage in an initial start process and supplies dropped voltage to a field magnet. A field current X-DCR outputs a field current signal.