电网技术
電網技術
전망기술
POWER SYSTEM TECHNOLOGY
2012年
1期
26-31
,共6页
詹雄%戴朝波%刘慧文%王宇红%燕翚%吴倩%崔虎宝%唐金昆
詹雄%戴朝波%劉慧文%王宇紅%燕翚%吳倩%崔虎寶%唐金昆
첨웅%대조파%류혜문%왕우홍%연휘%오천%최호보%당금곤
特高压串补%平台测量箱%大电流试验
特高壓串補%平檯測量箱%大電流試驗
특고압천보%평태측량상%대전류시험
UHV series capacitor%platform measurementbox%high current experiments
串补装置的平台测量箱位于电容器平台上,用于测量串补装置的各个电流,与可能流过数十kA的管母和连接支路的距离较近,因此,需要考核强电磁场情况下平台测量箱的电气性能指标。首先,给出箱体的电磁屏蔽效能工程计算公式,并据此估算出平台测量箱的工频电磁屏蔽效能;然后对平台测量箱进行大电流试验,用以模拟实际工况下的强工频电磁环境,测试平台测量箱体的工频电磁屏蔽效能和此情况下平台测量箱的性能。需要指出的是提出的大电流试验无法充分验证工频以外频率下平台测量箱的电磁兼容性。然而,鉴于大电流试验结果和箱体电磁屏蔽效能计算公式的计算结果一致,可根据计算公式对平台测量箱在各种频率下的电磁骚扰的抗扰度做出合理的估计。
串補裝置的平檯測量箱位于電容器平檯上,用于測量串補裝置的各箇電流,與可能流過數十kA的管母和連接支路的距離較近,因此,需要攷覈彊電磁場情況下平檯測量箱的電氣性能指標。首先,給齣箱體的電磁屏蔽效能工程計算公式,併據此估算齣平檯測量箱的工頻電磁屏蔽效能;然後對平檯測量箱進行大電流試驗,用以模擬實際工況下的彊工頻電磁環境,測試平檯測量箱體的工頻電磁屏蔽效能和此情況下平檯測量箱的性能。需要指齣的是提齣的大電流試驗無法充分驗證工頻以外頻率下平檯測量箱的電磁兼容性。然而,鑒于大電流試驗結果和箱體電磁屏蔽效能計算公式的計算結果一緻,可根據計算公式對平檯測量箱在各種頻率下的電磁騷擾的抗擾度做齣閤理的估計。
천보장치적평태측량상위우전용기평태상,용우측량천보장치적각개전류,여가능류과수십kA적관모화련접지로적거리교근,인차,수요고핵강전자장정황하평태측량상적전기성능지표。수선,급출상체적전자병폐효능공정계산공식,병거차고산출평태측량상적공빈전자병폐효능;연후대평태측량상진행대전류시험,용이모의실제공황하적강공빈전자배경,측시평태측량상체적공빈전자병폐효능화차정황하평태측량상적성능。수요지출적시제출적대전류시험무법충분험증공빈이외빈솔하평태측량상적전자겸용성。연이,감우대전류시험결과화상체전자병폐효능계산공식적계산결과일치,가근거계산공식대평태측량상재각충빈솔하적전자소우적항우도주출합리적고계。
The measurement box for seried compensation equipment is located on capacitor platform to measure currents of the compensator, so it is near to the tubular bus and connecting branch in which tens of kiloampere current may flow, so it is necessary to check the electric performance index of the measument box located on the platform under strong electric field strength. Firstly, the formula to calculate the electromagnetic shielding effect of the case body is given and by which the power frequency electromagnetic shielding performance of the case body of the meadurement box is evaluated; then the high current test of the case body to simulate the strong power frequency electromagnetic environment under actual operation condition should be performed and under such a condition the power frequency electromagnetic shielding effect of the case body as well as the performance of the measurement box are tested; It has to be pointed out that the proposed high current test cannot fully verify the electromagnetic compatibility of the measurement box under the frequencies different from power frequency. However, in view of the consistency of high current test results with calculation results of case body's electromagnetic shielding performance by the given formula, thus according to the given formula it is possible to reasonably evaluate the anti-interference effect of the measurement box to electromagnetic disturbances with various frequencies.