ABSTRACT

Power quality monitoring and investigation are necessary to maintain perfect and safe operation of sensitive equipment especially for nuclear facilities. In this work, a case study about harmonic analysis of an electrical power system at a Nuclear Research Reactor (NRR) has been done to evaluate the current state from the PQ point of view. Firstly, a study is given separately for different types of individual loads in NRR and their impact on the PQ of the electrical system. Then, an investigation of practical measurements was carried out for the NRR electrical system during certain condition of operation. These measurements were concerned with harmonic distortion in voltage, current and power of the electrical system of the NRR facility. Generally, the measurement results showed that the harmonic distortions in the electrical system are within the standard limits. Finally, modeling and simulation for the NRR electrical system has been built using Electrical Transient Analysis Program (ETAP) software to be used for simulations at different operating scenarios. The simulation results are compared with the measurements for verification and credibility. From the study it is clearly concluded that results of the program have a very slight difference with measured results and the impact of current state non-linear loads of NRR on PQ is accepted form the side of harmonics.

摘要

电能质量监测和调查对于保持敏感设备（尤其是核设施）的完美和安全运行是必要的。在这项工作中，已经完成了有关核研究堆（NRR）上的电力系统谐波分析的案例研究，以从PQ的角度评估当前状态。首先，分别研究了NRR中不同类型的单个负载及其对电气系统PQ的影响。然后，在一定的操作条件下对NRR电气系统进行了实际测量。这些测量与NRR设施的电气系统的电压，电流和功率中的谐波失真有关。通常，测量结果表明，电气系统中的谐波畸变在标准范围内。最后，已使用电瞬态分析程序（ETAP）软件构建了NRR电气系统的建模和仿真，该软件可用于不同操作场景下的仿真。将仿真结果与测量结果进行比较，以进行验证和可信度。从研究中可以清楚地得出结论，该程序的结果与实测结果之间存在很小的差异，并且从谐波侧可以接受NRR的当前状态非线性负载对PQ的影响。将仿真结果与测量结果进行比较，以进行验证和可信度。从研究中可以清楚地得出结论，该程序的结果与实测结果之间存在很小的差异，并且从谐波侧可以接受NRR的当前状态非线性负载对PQ的影响。将仿真结果与测量结果进行比较，以进行验证和可信度。从研究中可以清楚地得出结论，该程序的结果与实测结果之间存在很小的差异，并且从谐波侧可以接受NRR的当前状态非线性负载对PQ的影响。