Automatic sequence switching has been an important pursuit in the field of substation automation. An intelligent approach to the optimization of switching sequences in electric substations is presented. The optimal sequence switching problem is stated. A knowledge-based model of a substation switch netwo...
the other normality test.Appropriate procedures for the normality test were proposed and implemented by software.The method used in frequency-domain analysis was to compute overall envelope.These statistical characteristic analysis methods are showed to be of great value in analyses of the measured ...
a procedure for a schaltge u00adr u00e4tes procedures in a schaltzelle when the door (53) of the schaltzelle comprises a latch (30), with ausnehmungen (25, 26, 27) of a f u00fchrungsstange (16) below which a anschlagk u00f6rper frontseitiges end (22).the an u00adschlagk ...
The scenario is described as follows: • When a request for switching is given to the substation control center (SCC), the voltage is externally connected to the device which contains the Point-on-wave switching function. • The control center performs a plausibility check for the voltage, ...
. Multi-busbar arrangements with sectioning facilities allow the system to be split or connected through a fault limiting reactor. It is also possible to split a system using circuit breakers in a mesh or ring type substation layout although this requires careful planning and operational procedures...
Overvoltage incident due to500kV isolator operation in Shanghe substation; 上河变电所500kV隔离开关操作中感应过电压事故分析 2. Through a practical overhaul case of high voltage circuit breaker and isolator, the paper expounds the faults caused by difficulties of the circuit breaker in closing and...
After a blackout, power needs to be restored as quickly and reliably as possible, and, consequently, detailed restoration plans are nec [1–4]. One of the major concerns in power system restoration is the occurrence of overvoltages as a result of switching procedures. These can be classified...
coordination by several SCs such as WG B3.22/29 on-site testing procedures (TB 400, TB562), WG C4.306 on UHV insulation coordination (TB 542) and AG D1.03 on Very Fast Transient Phenomena (TB 519) beside WG A3.22 and A3.28 on Substation equipment specifications (TB362, TB456, TB570...
2 TerminalClearanceAguaranteefromadispatchingentitytoanindividualor requestingdispatcherfromanotherutilityofisolationofequipment inalineorsubstation.Theterminalclearanceassuresthe individualorrequestingdispatcherfromanotherutilitythatthe equipmentisopen,properlyclearedandtaggedaccordingtolocal procedures,andthatitwillnotbe...
procedures and operation skills, solving the problem of danger occurring as the person on duty conducts less operation on CT current testing terminal switching and is not skilled in operation, and improving the operating efficiency of transfer switching, thus ensuring the safe operation of a power ...