电力系统自动化
電力繫統自動化
전력계통자동화
Automation of Electric Power Systems
2015年
21期
93-98
,共6页
侯明国%沈健%檀永%周斌%汪昀%张敏
侯明國%瀋健%檀永%週斌%汪昀%張敏
후명국%침건%단영%주빈%왕윤%장민
广域测量系统%相量测量装置%动态相量数据%变频传输%低频振荡%稳定分析%参数识别%扰动识别
廣域測量繫統%相量測量裝置%動態相量數據%變頻傳輸%低頻振盪%穩定分析%參數識彆%擾動識彆
엄역측량계통%상량측량장치%동태상량수거%변빈전수%저빈진탕%은정분석%삼수식별%우동식별
wide area measurement system (WAMS)%phasor measurement unit (PMU)%dynamic phasor data%variable rate transmission%low frequency oscillation%stability analysis%parameter identification%disturbance identification
为了有效降低广域测量系统(WAMS)主站与相量测量装置(PMU)子站之间实时数据的传输频率,同时又不影响 WAMS 基于 PMU 实时数据的各类高级应用,提出了一种实现 PMU 实时数据“三段式变频传输”方法。对 PMU 数据的应用现状和应用场景进行了分析总结,在此基础上提出了 PMU 实时数据的“三段式变频传输”方法,将 PMU 实时数据分为 A,B,C 三段,在电网正常运行时,PMU 子站以较低传输频率传输 PMU 实时数据,当 PMU 子站在检测到电网发生扰动时,PMU 子站立即以较高传输频率先传输缓冲区内的 A 段数据,然后再继续以较高传输频率传输扰动过程中的 B 段实时数据,直至扰动消失后,再将传输频率降低,传输 C 段实时数据。通过对现行的 PMU 通信规约进行扩展,实现了与现有通信规约兼容的 PMU 实时数据“三段式变频传输”方法。最后,通过仿真验证了该方法的可行性及效果。
為瞭有效降低廣域測量繫統(WAMS)主站與相量測量裝置(PMU)子站之間實時數據的傳輸頻率,同時又不影響 WAMS 基于 PMU 實時數據的各類高級應用,提齣瞭一種實現 PMU 實時數據“三段式變頻傳輸”方法。對 PMU 數據的應用現狀和應用場景進行瞭分析總結,在此基礎上提齣瞭 PMU 實時數據的“三段式變頻傳輸”方法,將 PMU 實時數據分為 A,B,C 三段,在電網正常運行時,PMU 子站以較低傳輸頻率傳輸 PMU 實時數據,噹 PMU 子站在檢測到電網髮生擾動時,PMU 子站立即以較高傳輸頻率先傳輸緩遲區內的 A 段數據,然後再繼續以較高傳輸頻率傳輸擾動過程中的 B 段實時數據,直至擾動消失後,再將傳輸頻率降低,傳輸 C 段實時數據。通過對現行的 PMU 通信規約進行擴展,實現瞭與現有通信規約兼容的 PMU 實時數據“三段式變頻傳輸”方法。最後,通過倣真驗證瞭該方法的可行性及效果。
위료유효강저엄역측량계통(WAMS)주참여상량측량장치(PMU)자참지간실시수거적전수빈솔,동시우불영향 WAMS 기우 PMU 실시수거적각류고급응용,제출료일충실현 PMU 실시수거“삼단식변빈전수”방법。대 PMU 수거적응용현상화응용장경진행료분석총결,재차기출상제출료 PMU 실시수거적“삼단식변빈전수”방법,장 PMU 실시수거분위 A,B,C 삼단,재전망정상운행시,PMU 자참이교저전수빈솔전수 PMU 실시수거,당 PMU 자참재검측도전망발생우동시,PMU 자참립즉이교고전수빈솔선전수완충구내적 A 단수거,연후재계속이교고전수빈솔전수우동과정중적 B 단실시수거,직지우동소실후,재장전수빈솔강저,전수 C 단실시수거。통과대현행적 PMU 통신규약진행확전,실현료여현유통신규약겸용적 PMU 실시수거“삼단식변빈전수”방법。최후,통과방진험증료해방법적가행성급효과。
In order to reduce the frequency of real-time data transmission between (WAMS) and phasor measurement unit (PMU), without affecting the advanced applications of WAMS, this paper presents a “three-segment variable rate transmission" method of the PMU data.The status of the WAMS/PMU application is introduced,and application scenarios for PMU data are summarized.And then“three-segment variable rate transmission"of PMU real-time data that divides PMU data transmission into 3 segments is proposed.During steady state,PMUs will transmit real-time data at rate F L . When disturbance occurs,firstly PMU will send out A-segment data in buffer immediately.Then B-segment data during disturbance will be transmitted at rate F H ,and finally reporting rate will be lowered to F L to transmit C-segment data after disturbance. By extending the existing PMU, a “three-step variable rate transmission" method compatible with the existing PMU communication protocol is achieved.Finally,the feasibility and effectiveness of the method is verified via simulation.
