电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2015年
10期
111-115
,共5页
智能变电站%交换机%过程层%SMV(Sampled Measured Value)%IEC 61850-9-2%传输延时测量%FPGA
智能變電站%交換機%過程層%SMV(Sampled Measured Value)%IEC 61850-9-2%傳輸延時測量%FPGA
지능변전참%교환궤%과정층%SMV(Sampled Measured Value)%IEC 61850-9-2%전수연시측량%FPGA
intelligent substation%switch%process layer%sampled measured value (SMV)%IEC 61850-9-2%delay measurement%FPGA
智能变电站过程层网络SMV报文组网的传输方式已成为一种趋势。SMV报文组网的传输方式具有信息共享便捷的优势，但是 SMV 报文在网络交换设备交换机中传输的延时具有不确定性，这样就需要可靠的时钟源来进行同步，而且合并单元需要具备一定的守时能力。为了使 SMV 报文组网的传输方式不依赖外部时钟源，尝试对交换机进行改进，给出了一种基于FPGA的过程层SMV报文传输延时可测的交换机架构，提出了一种利用IEC 61850-9-2帧结构中Reserved字段测量并记录传输延时的方案。经过验证，该架构和方案可以准确地测量SMV报文在网络中传输的延时。
智能變電站過程層網絡SMV報文組網的傳輸方式已成為一種趨勢。SMV報文組網的傳輸方式具有信息共享便捷的優勢，但是 SMV 報文在網絡交換設備交換機中傳輸的延時具有不確定性，這樣就需要可靠的時鐘源來進行同步，而且閤併單元需要具備一定的守時能力。為瞭使 SMV 報文組網的傳輸方式不依賴外部時鐘源，嘗試對交換機進行改進，給齣瞭一種基于FPGA的過程層SMV報文傳輸延時可測的交換機架構，提齣瞭一種利用IEC 61850-9-2幀結構中Reserved字段測量併記錄傳輸延時的方案。經過驗證，該架構和方案可以準確地測量SMV報文在網絡中傳輸的延時。
지능변전참과정층망락SMV보문조망적전수방식이성위일충추세。SMV보문조망적전수방식구유신식공향편첩적우세，단시 SMV 보문재망락교환설비교환궤중전수적연시구유불학정성，저양취수요가고적시종원래진행동보，이차합병단원수요구비일정적수시능력。위료사 SMV 보문조망적전수방식불의뢰외부시종원，상시대교환궤진행개진，급출료일충기우FPGA적과정층SMV보문전수연시가측적교환궤가구，제출료일충이용IEC 61850-9-2정결구중Reserved자단측량병기록전수연시적방안。경과험증，해가구화방안가이준학지측량SMV보문재망락중전수적연시。
Constructing SMV network of intelligent substation process layer with switches has been becoming a fashion. This structure is convenient to share information among multiple devices, but it leads to uncertainty and indeterminacy in terms of time delay when transmitting in the network. This drawback requires a reliable time resource to realize synchronization, and the merging unit should have the ability of time keeping to a certain degree. To solve these problems, this paper gives a structure of switch based on FPGA aiming to measure the time delay of SMV packets transmission, and proposes a scheme of measuring and storing the time delay using the reserved bytes in IEC 61850-9-2 frame. FPGA realization and experiments justify the proposed structure and scheme of the time delay measurement.
