In this study, an algorithm was developed to represent the insulation state of uninterruptible direct current power supply systems, including circuitry. The existing insulation monitoring system in uninterruptible state was only possible with attachment type devices, but there was no portable inspection equipment at the site. This algorithm is called asymmetric high resistance detection (AHRD), which can compensate for the shortcomings of existing pulse and passive measurement methods, like not being able to measure when both positive and negative electrodes are poorly insulated. The researchers then developed a device that uses this algorithm for the on-site testing of direct current power supply systems, such as solar power generation units and energy storage systems (ESSs). Conversion and estimation formulas were also developed and verified by analyzing the correlation between the measurement values and simulation results of the device’s sensor parameter settings. A standard power supply and standard resistance were used on the newly developed insulation meter to assess it using a lab test and a performance test. Its performance is verified through a comparative analysis between the newly developed insulation meter with the existing insulation monitoring device at an ESS site. Applying the technology proposed in this study at testing sites can enable the verification of the insulation state of circuitry and direct current power supply systems, thereby preventing accidents by ensuring electrical safety.

中文翻译：

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基于AHRD算法的绝缘状态直流电力系统测量技术开发研究

在这项研究中，开发了一种算法来表示不间断直流电源系统（包括电路）的绝缘状态。现有的不间断状态绝缘监测系统只能使用附件式设备，但现场没有便携式检查设备。这种算法被称为非对称高电阻检测（AHRD），它可以弥补现有脉冲和被动测量方法的缺点，如正负极绝缘不良时无法测量。研究人员随后开发了一种设备，该设备使用该算法对直流电源系统进行现场测试，例如太阳能发电机组和储能系统 (ESS)。通过分析设备传感器参数设置的测量值与仿真结果之间的相关性，还开发并验证了转换和估计公式。新开发的绝缘表使用标准电源和标准电阻，通过实验室测试和性能测试对其进行评估。通过将新开发的绝缘表与 ESS 站点现有的绝缘监测设备进行比较分析，验证了其性能。在测试现场应用本研究提出的技术可以验证电路和直流电源系统的绝缘状态，从而通过确保电气安全来预防事故。