查询词典 phase-reversal relay

Multi-agent ; split-phase current differential protection ; relay protection

多Agent技术；分相电流差动保护；继电保护

Three-phase current protection relay is one of the important forms of protection.

三段式电流保护是中一种重要的保护形式。

The research work of this paper is divided into five parts: The first ,according to the work characteristics of ship's auxiliary boiler, this paper is to design applied project in the automatic control system of ship's auxiliary boiler; The second, according to the work request of the cargo winch of alternating three-speed change-pole speed-adjusting, this paper is to determine adopting the method of the PLC control; The third, this paper is to design PLC application in three -phase induction motor control, to give the ladder chart, program and input and output circuit diagram; The fourth, this paper is to research the method of the ship's combined starting screen automatic control with the PLC; The fifth, this paper is to inquire the possibility of apply the PLC in ship's engine room surveillance system; According to the comprehensive analysis of above actual example of ship's auxiliary machinery automatic system with the technique of PLC; not only can use the technique of PLC to replace traditional relay-contactor control technique in ship's auxiliary machinery automatic system, but also can get the conclusion of the former is more dependable and more clever than the latter, the maintenance is more convenient, thus develop a new path for ship automation.

本文研究的工作主要包括五个部分：第一，根据船舶辅锅炉的工作特点，设计PLC在船舶辅锅炉自动控制系统中的应用方案，主要有PLC选型及输入输出点的设计，画出系统控制梯形图并分析工作原理；第二，根据交流三速变极调速起货机的工作要求，确定采用PLC控制的方法，进行控制系统的硬件设计和软件设计，并分析工作原理：第三，设计了PLC在三相异步电动机控制中的应用，给出了控制梯形图、程序及输入、输出接线图；第四，研究了用PLC实现船舶组合起动屏自动控制的方法，进行了系统的电源设计和软件设计，给出系统工作流程图；第五，探讨了船舶机舱监视系统应用PLC的可行性，将继电器报警线路改为用PLC控制报警，给出系统硬件图和软件梯形图，并分析了PLC机的选型、抗干扰和应用PLC的经济效益和社会效益等问题。综合以上船舶辅助机械自动控制系统采用PLC技术的实例分析，可以得出船舶辅助机械自动控制系统不但可以使用PLC技术取代传统的继电器接触器控制技术，而且前者比后者更可靠、更小巧，维护保养更方便的结论，从而为船舶自动化开辟了一条新的路径。无忧毕业设计网 www.5ubs.cn

Which explained "" overcurrent trip behavior: as the relay for other contacts are fine speed controller and current regulator of input and output signal both the normal value of zero growth of the original does not work contact for some reason (such as vibration, etc.) to work, all of a sudden phase-limiter had lifted the blockade and the output signal, so that the larger main motor Haar "" transflux arising from the trip.

由此也可注释呈现&功不源&跳闸本体的来因：由于该继电器的其他触不面均处事精良，速率调度器和电不源调度器的不不不不不不不输入、不不不不不不不输入暗记均呈变态的由不整到必不退值的落低，而本来不处事的触不面由于某种来因猝然又处事了，移相限制器便因撤废敞开而不不不不不不不输入较大暗记，使宾电机不不矮速启不静而呈现&功不源&跳闸本体。

Three-phase current protection relay is one of the important forms of protection.

三段式电流保护是继电保护中一种重要的保护形式。

Large distributed capacitive current of Ultra-High-Voltage transmission line depresses the sensitivity and reliability of traditional phase-segregated current differential relay.

传统的分相式差动保护应用于特高压输电线路时，很大的分布电容电流导致其灵敏度和可靠性严重下降。

"In addition, various pilot lights, lightning arrestors, phase protectors and intrinsically safe relay s are available as modifications."

此外，作为改型件，还可提供各种指示灯，避雷器，相位保护器和安全火花继电器。

Mark needle ; phase and frequency correct PWM mode ; high frequency electromagnetic valve ; DC relay ; ATmeag16; CH341T

标记针；相频修正PWM模式；高频电磁阀；直流继电器； ATmeag16； CH341T

The device adopts 80C196 microprocessor as the CPU of relay; the frequency measurement unit employs hardware to measure frequency, the measurement precision is higher; the under-frequency disconnection unit has perfect, reliable blocking measure to prevent mal-operation; the under-voltage disconnect unit has reliable criteria to detect three phase voltage failure.

采用80C196高性能快速单片机为保护CPU，频率测量单元运用硬件测频，测量精度高；低周解列单元设有完善可靠的防止误动作的闭锁措施；低压解列单元具有可靠的三相TV断线闭锁判据。

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企业主要生产：ZP型普通整流管、ZK型快速整流管、KP型普通晶闸管、KS型双向晶闸管、KK型快速晶闸管、KG型高频晶闸管、桥式整流器、电力模块、肖特基模块、SF超快恢复二极管、电焊机专用模块、固态继电器、固态调压器、型材散热器等电力半导体器件。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。