描述

RED670 1MRK000028-CAR01 電流互感器的特性與變比均應(yīng)相同

母線差動(dòng)保護(hù)是用于保護(hù)母線的一種重要保護(hù)裝置，RED670 1MRK000028-CAR01 主要應(yīng)用于電力系統(tǒng)中的母線故障檢測(cè)和切除。它的工作原理主要是基于比較電流是否平衡或者相位是否一致來實(shí)現(xiàn)故障判斷的。

在正常工作情況下，RED670 1MRK000028-CAR01 流入母線的電流和等于從該節(jié)點(diǎn)流出的電流，即母線差動(dòng)保護(hù)的差動(dòng)電流為零。如果母線發(fā)生故障，差動(dòng)電流將大于零，母線差動(dòng)保護(hù)將會(huì)動(dòng)作切除故障。

母線差動(dòng)保護(hù)有多種實(shí)現(xiàn)方式，其中最常用的是完全差動(dòng)保護(hù)和不完全差動(dòng)保護(hù)。完全差動(dòng)保護(hù)將母線上所有的各連接元件的電流互感器按同名相、同極性連接到差動(dòng)回路，電流互感器的特性與變比均應(yīng)相同，以滿足ΣI=0的條件。不完全差動(dòng)保護(hù)只需將連接于母線的各有電源元件上的電流互感器，接入差動(dòng)回路，在無電源元件上的電流互感器不接入差動(dòng)回路。

在實(shí)際應(yīng)用中，RED670 1MRK000028-CAR01 母線差動(dòng)保護(hù)的特性會(huì)受到多種因素的影響，如電流互感器的特性、變比、二次回路的斷線等。為了提高母線差動(dòng)保護(hù)的可靠性和選擇性，可以采用速飽和變流器、躲開外部短路時(shí)產(chǎn)生的不平衡電流、躲開最大負(fù)荷支路的最大負(fù)荷電流等措施。

總之，RED670 1MRK000028-CAR01 母線差動(dòng)保護(hù)是保障電力系統(tǒng)安全穩(wěn)定運(yùn)行的重要設(shè)備之一，具有高可靠性、快速性和選擇性等優(yōu)點(diǎn)。

RED670 1MRK000028-CAR01 電流互感器的特性與變比均應(yīng)相同

Bus differential protection is an important protection device used to protect the bus, RED670 1MRK000028-CAR01 is mainly used in the power system of the bus fault detection and removal. Its working principle is mainly based on comparing whether the current is balanced or whether the phase is consistent to achieve fault judgment.

Under normal working conditions, the current flowing into the bus of RED670 1MRK000028-CAR01 is equal to the current flowing out of the node, that is, the differential current of the differential protection of the bus is zero. If the busbar fails, the differential current will be greater than zero, and the busbar differential protection will act to remove the fault.

There are many ways to implement busbar differential protection, the most common of which are complete differential protection and incomplete differential protection. Complete differential protection connects the current transformers of all connected components on the bus to the differential circuit according to the same phase and polarity, and the characteristics and ratio of the current transformer should be the same to meet the condition of ΣI=0. Incomplete differential protection only needs to connect the current transformer connected to the bus on each power component to the differential circuit, and the current transformer on the non-power component does not connect to the differential circuit.

In practical applications, the characteristics of RED670 1MRK000028-CAR01 bus differential protection will be affected by a variety of factors, such as the characteristics of the current transformer, the ratio, the break of the secondary circuit, etc. In order to improve the reliability and selectivity of busbar differential protection, the speed saturation converter can be used to avoid the unbalanced current caused by external short circuit and the maximum load current of the maximum load branch.

In short, RED670 1MRK000028-CAR01 bus differential protection is one of the important equipment to ensure the safe and stable operation of the power system, with high reliability, speed and selectivity.

 

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Chengdu Sunshine Xihe Co., Ltd. specializes in one-stop procurement consulting for imported industrial spare parts, offering original equipment and professional discontinued parts services. We are committed to providing efficient and reliable automation solutions for our customers. Customer support fast responseThe network of partners spans all continentsGlobal partner networkAlways achieve more delivery, be it parts, service or speed



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