Description
The Synchronizing function allows closing ofasynchronous networks at the correct moment includingthe breaker closing time, which improves the networkstability. Synchrocheck, energizing check, and synchronizingSESRSYN function checks that the voltages on bothsides of the circuit breaker are in synchronism, or withat least one side dead to ensure that closing can bedone safely. For systems, which are running asynchronous, asynchronizing function is provided. The main purpose ofthe synchronizing function is to provide controlledclosing of circuit breakers when two asynchronoussystems are going to be connected. The synchronizingfunction evaluates voltage difference, phase angledifference, slip frequency and frequency rate of changebefore issuing a controlled closing of the circuit breaker.Breaker closing time is a parameter setting. Apparatus control APC The apparatus control functions are used for control andsupervision of circuit breakers, disconnectors andearthing switches within a bay. Permission to operate isgiven after evaluation of conditions from otherfunctions such as interlocking, synchrocheck, operatorplace selection and external or internal blockings.
Apparatus control features:
• Select-Execute principle to give high reliability
• Selection function to prevent simultaneous operation
• Selection and supervision of operator place
• Command supervision
• Block/deblock of operation
• Block/deblock of updating of position indications
• Substitution of position and quality indications
• Overriding of interlocking functions
• Overriding of synchrocheck
• Operation counter
• Suppression of mid position
Features of the apparatus control function are: • Operation of primary apparatuses • Select-Execute principle to give high reliability • Selection and reservation function to preventsimultaneous operation • Selection and supervision of operator place • Command supervision • Block/deblock of operation • Block/deblock of updating of position indications • Substitution of position indications • Overriding of interlocking functions • Overriding of synchrocheck • Pole discordance supervision • Operation counter
Interlocking The interlocking function blocks the possibility tooperate primary switching devices, for instance when adisconnector is under load, in order to prevent materialdamage and/or accidental human injury. Each apparatus control function has interlockingmodules included for different switchyardarrangements, where each function handles interlockingof one bay. The interlocking function is distributed toeach IED and is not dependent on any central function.For the station-wide interlocking, the IEDs communicatevia the system-wide interbay bus (IEC 61850-8-1) or byusing hard wired binary inputs/outputs. Theinterlocking conditions depend on the circuitconfiguration and apparatus position status at anygiven time. For easy and safe implementation of the interlockingfunction, the IED is delivered with standardized andtested software interlocking modules containing logicfor the interlocking conditions. The interlockingconditions can be altered, to meet the customer’sspecific requirements, by adding configurable logic bymeans of the graphical configuration tool.
[Disclaimer]
Guizhou Yuanmiao Automation Equipment Co., LTD. We sell new products and discontinued products, independent channels to purchase such special products. Guizhou Yuanmiao Automation Equipment Co., Ltd. is not an authorized distributor, distributor or representative of the featured products on this website. All product names/product images, trademarks, brands and logos used on this website are the property of their respective owners. Descriptions, descriptions or sales of products bearing these names, pictures, trademarks, brands and logos are for identification purposes only and do not imply any association or authorization with any rights holder.
This article is from the official website of Guizhou Yuanmiao Automation Equipment Co., LTD. Please attach this link: http://www.ymdcs.com/ABB/
