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- Based on the transformation of synchronous coordinate transformation and SPLL,this paper proposes a single-phase voltage sag detection method. 本文基于同步坐标变换及软件锁相环(SPLL),提出了一种单相电压凹陷检测方法。
- In order to enhance the dynamic performance of DVR and make it running more economically, this paper do research in voltage sag detection algorithm, control methods, as well as the calculation methods of compensation voltage of DVR. 为了提高DVR的动态性能,减少DVR的能量输出,提高DVR的经济性及综合性,本文对DVR的电压凹陷检测算法,DVR系统控制方法和DVR补偿电压计算方法展开了研究,主要的研究成果包括以下几个方面:
- voltage sag detection 电压跌落检测
- Voltage sag and Momentary Outages Protection. 电压降落与瞬间停电的保护
- At present dynamic voltage restorer(DVR) is an effective device to deal with the voltage sag.Exact detection of voltage sag characteristics is the precondition of DVR's normal working. 动态电压恢复器(DVR)是目前解决供电电压凹陷问题的有效装置,对电压凹陷特征量的准确检测是DVR正常运行的前提。
- A momentary voltage dip that lasts for a few seconds or less is classified as a voltage sag. 短时电压跌落持续几秒或更短可归属电压下跌。
- Dynamic Voltage Restorer (DVR) is considered as the most effective device to compensate the voltage sag. 动态电压恢复器(DVR)是目前补偿电压凹陷最为有效的装置。
- The characteristic of voltage sag is affected by the configuration of distribution network. 配电网的网络结构可以影响电压暂降的性能。
- The development of electric power market enforced the restriction to voltage sag. 电力市场的发展对电压暂降提出了更加严格的限制。
- As a result, voltage sag compensator will suffer from the significant the inrush current. 瞬间的涌浪电流对于电压骤降补偿器造成很大的负担。
- In transient state, voltage sag in the load bus can be improved in a very short period by the proposed DVR. 在暂态方面，使用感应马达为负载来验证动态电压调整器的补偿能力及速度，确保在短时间内补偿暂态压降。
- To build a high quality of power supply, the voltage sag compensator is applied. 为了建立高品质的电源，电压骤降补偿器因此被广泛使用。
- The authors propose a transformerless serial voltage sag compensation scheme in which the energy-storage component is not equipped. 针对电网电压跌落问题,提出了一种无变压器、无储能元件的串联型电压跌落补偿方案。
- First,the wavelet coefficients of basic frequency are extracted to identify the short duration disturbance like voltage sag,swell and interruption. 先提取基波频段所在的小波系数将电压凹陷、电压凸起和电压中断分别检测出来;
- Simulation results show that the proposed control approach for cascaded superconducting energy storage system can effectively cope with voltage sag. 系统仿真结果表明，本文提出的方法控制电压凹陷的效果较好。
- The reason of voltage sag in electric power supplying system for Taiyuan satellite-launching center was introduced in detail and illustrated with examples in this article. 对太原发射中心供电系统电压凹陷产生的原因作了详细介绍与举例说明。
- This paper puts forward the assessment on the real-time operation state of the specific equipment while voltage sag happens based on the energy impact on users. 在电网构成存在缺陷、压凹陷严重影响电力用户的生产生活时,需要准确地衡量用电设备受影响状况以及电网用户的经济损失。
- Any voltage sag event in the power distribution system could cause under-voltage fault in sensitive loads and inflict significant losses with production process interruption. 在配电系统中任何的电压骤降事故，都可能使得敏感性负载因欠电压而停机导致生产制程中断，造成严重的损失。
- Along with a lot of new equipment sensitive to transient voltage putting into use, voltage sag caused intensive attention from both the power system and the user. 随着对暂态电压敏感的设备大量投入使用，电压暂降问题引起了供用电双方的极大关注。
- Power-quality (PQ) study has become a more and more important subject lately.Harmonics, voltage swell, voltage sag, and power interruption could downgrade the service quality. 供应链管理能够执行成功，最重要的因素在于供应链上下游的所有企业能否顺利的进行沟通与合作。
