描述

H006.7538?PAM-R1N-H8F-AP-P?V10800 SOCAPEL 母線差動保護(hù)

母線差動保護(hù)是保證電網(wǎng)安全穩(wěn)定運(yùn)行的重要系統(tǒng)設(shè)備，H006.7538?PAM-R1N-H8F-AP-P?V10800的安全性、可靠性、靈敏性和快速性對保證整個(gè)區(qū)域電網(wǎng)的安全具有決定性的意義。

母線差動保護(hù)的基本原理是依據(jù)基爾霍夫電流定律。對于一個(gè)母線系統(tǒng)，母線上有n條支路。I=I?+I?+I?+……+I?，為流入母線的和電流，即母線保護(hù)的差動電流。當(dāng)系統(tǒng)正常運(yùn)行或外部發(fā)生故障時(shí)，流入母線的電流和為零，即母線差動保護(hù)的差動電流，母線保護(hù)不動作。當(dāng)母線發(fā)生故障時(shí)，等于流入故障點(diǎn)的電流，如果大于母線保護(hù)所設(shè)定的動作電流時(shí)，母線保護(hù)將會動作。

母線完全差動保護(hù)是將母線上所有的各連接元件的電流互感器按同名相、同極性連接到差動回路，電流互感器的特性與變比均應(yīng)相同，若變比不能相同時(shí)，可采用補(bǔ)償變流器進(jìn)行補(bǔ)償，滿足ΣI=0。此外，還有母線不完全差動保護(hù)，只需將連接于母線的各有電源元件上的電流互感器，接入差動回路，在無電源元件上的電流互感器不接入差動回路。

母線差動保護(hù)H006.7538?PAM-R1N-H8F-AP-P?V10800的動作時(shí)間較慢，約有30-40毫秒的動作延時(shí)，不能快速切除故障。如果啟動元件和選擇元件的動作電流按避越外部短路時(shí)的最大不平衡電流整定，其靈敏度較低。因此，它適應(yīng)運(yùn)行方式變化的能力較差。

H006.7538?PAM-R1N-H8F-AP-P?V10800 SOCAPEL 母線差動保護(hù)

Busbar differential protection is an important system equipment to ensure the safe and stable operation of power grid. The safety, reliability, sensitivity and rapid-speed of H006.7538 PAM-R1N-H8F-AP-P V10800 are of decisive significance to ensure the safety of the entire regional power grid.

The basic principle of busbar differential protection is based on Kirchhoff’s current law. For a bus system, there are n branches on the bus. I=I?+I?+I?+…… +I?, is the sum current flowing into the bus, that is, the differential current protected by the bus. When the system runs normally or an external fault occurs, the sum of the current flowing into the bus is zero, that is, the differential current of the bus differential protection, and the bus protection does not operate. When a busbar fails, it is equal to the current flowing into the fault point, and if it is greater than the operating current set by the busbar protection, the busbar protection will operate.

The complete differential protection of the busbar is to connect the current transformer of all the connected components on the busbar to the differential circuit according to the same phase and the same polarity. The characteristics and ratio of the current transformer should be the same. If the ratio cannot be the same, compensation converters can be used to compensate, meeting the ΣI=0. In addition, there is incomplete differential protection of the bus, which only needs to connect the current transformer on each power component of the bus to the differential circuit, and the current transformer on the non-power component does not connect to the differential circuit.

Busbar differential protection H006.7538 PAM-R1N-H8F-AP-P V10800 operation time is slow, about 30-40 milliseconds of action delay, can not quickly remove the fault. If the operating current of the starting element and the selecting element is adjusted according to the maximum unbalance current when avoiding the external short circuit, the sensitivity is low. As a result, it is less able to adapt to changes in the way it operates.

 

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公司介紹：
成都陽光不斷創(chuàng)新致力于提升停產(chǎn)的自動化零件供應(yīng)水平，無論客戶身處何地，無論所需配件多么稀有，我們總能將客戶與所需產(chǎn)品緊密連接 ，成都陽光零部件覆蓋廣泛。
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Company Introduction:
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



始終實(shí)現(xiàn)更多的交付，無論是零件、服務(wù)還是速度