CAJ | 학술논문

ITER测试平台无功补偿及谐波抑制系统包含一套由RLC滤波支路和晶闸管控制电抗器(TCR)组成的无功补偿装置，当接入电网时，为防止系统甩负荷对电网的安全性产生影响，通过计算解析研究分析了系统甩负荷时在110kV母线上产生的过电压。结果表明，当因系统故障进行甩负荷时，母线电压上确实会产生一个较高的过电压，其数值已超出国家标准允许范围，可能会对电网产生一定影响，需采取防护措施，即加入了一条由反并联二极管和电阻组成的旁通支路来释放主回路电流以减少过电压。MATLAB的仿真结果也验证了上述结果的正确性。
ITER측시평태무공보상급해파억제계통포함일투유RLC려파지로화정갑관공제전항기(TCR)조성적무공보상장치，당접입전망시，위방지계통솔부하대전망적안전성산생영향，통과계산해석연구분석료계통솔부하시재110kV모선상산생적과전압。결과표명，당인계통고장진행솔부하시，모선전압상학실회산생일개교고적과전압，기수치이초출국가표준윤허범위，가능회대전망산생일정영향，수채취방호조시，즉가입료일조유반병련이겁관화전조조성적방통지로래석방주회로전류이감소과전압。MATLAB적방진결과야험증료상술결과적정학성。
The ITER test platform contains a reactive power compensation and harmonic suppression system, which consists of the RLC filter branches and thyristor controlled reactor(TCR). When connected to the grid, in order to prevent the negative effects of load rejection on grid, the load rejection overvoltage at 110kV bus bar by mathematical calculation is analyzed, which shows that there is a high overvoltage on bus bar when the system throws off the load, and its value is not within the allowable range of the national standards and maybe have impact on grid, so we need to take some protective measures. In order to decrease overvoltage, there adds a bypass branch which contains the anti-parallel diode and a resistor to release the main circuit current. The simulation on the whole system with MATLAB verifies the results above.