电力自动化设备
電力自動化設備
전력자동화설비
ELECTRIC POWER AUTOMATION EQUIPMENT
2010年
4期
105-108
,共4页
自动准同期装置%切换箱%双CPU%多级闭锁%线性插值算法
自動準同期裝置%切換箱%雙CPU%多級閉鎖%線性插值算法
자동준동기장치%절환상%쌍CPU%다급폐쇄%선성삽치산법
quasi-synchronization device%line-selection device%dual-CPU%multiple interlock%linear interpolation algorithms
针对目前同期装置大都采用外部切换箱实现外部电压切换,现场布线比较复杂的情况,提出了一种包含同期电压切换功能的自动准同期装置实现方法.通过直接控制对象切换继电器电源的方法实现了同期电压切换:装置采用了双CPU、双AD结构,包含了CPU内部的CPLD闭锁、双机报文监视闭锁、同期出口继电器的串联闭锁以及外部同期闭锁继电器多级闭锁,能够可靠地完成电压切换及同期:在对外接口等方面创新地引入了液晶式同步表、同期电压录波及查看功能,支持双以太网及多种通信规约,能够满足各种现场应用的需求.在同期算法中采用了非线性预测和线性插值相结合的方法,保证同期合闸角小于1°,性能优越.
針對目前同期裝置大都採用外部切換箱實現外部電壓切換,現場佈線比較複雜的情況,提齣瞭一種包含同期電壓切換功能的自動準同期裝置實現方法.通過直接控製對象切換繼電器電源的方法實現瞭同期電壓切換:裝置採用瞭雙CPU、雙AD結構,包含瞭CPU內部的CPLD閉鎖、雙機報文鑑視閉鎖、同期齣口繼電器的串聯閉鎖以及外部同期閉鎖繼電器多級閉鎖,能夠可靠地完成電壓切換及同期:在對外接口等方麵創新地引入瞭液晶式同步錶、同期電壓錄波及查看功能,支持雙以太網及多種通信規約,能夠滿足各種現場應用的需求.在同期算法中採用瞭非線性預測和線性插值相結閤的方法,保證同期閤閘角小于1°,性能優越.
침대목전동기장치대도채용외부절환상실현외부전압절환,현장포선비교복잡적정황,제출료일충포함동기전압절환공능적자동준동기장치실현방법.통과직접공제대상절환계전기전원적방법실현료동기전압절환:장치채용료쌍CPU、쌍AD결구,포함료CPU내부적CPLD폐쇄、쌍궤보문감시폐쇄、동기출구계전기적천련폐쇄이급외부동기폐쇄계전기다급폐쇄,능구가고지완성전압절환급동기:재대외접구등방면창신지인입료액정식동보표、동기전압록파급사간공능,지지쌍이태망급다충통신규약,능구만족각충현장응용적수구.재동기산법중채용료비선성예측화선성삽치상결합적방법,보증동기합갑각소우1°,성능우월.
External line-selection device is required in most quasi-synchronization devices,resulting in very complicated field wiring.A solution of quasi-synchronization device including line-selection function is proposed,which realizes line-selection by direct control of object relay power supply.The device adopts dual-CPU and dual-AD structure,including CPLD interlock inside CPU,message monitoring interlock between CPUs,serial interlock of synchronization output relays and external synchronization blocking relays for reliable execution of line-selection and synchronization.The real-time phase chart and recorded voltage synchronization waveform can be displayed on LCD.The device supports dual Ethernet and multiple protocols to meet the requirements of various applications.The nonlinear prediction and linear interpolation are combined in synchronization algorithm to guarantee the closing angle less than 1°.
