查询词典 islanding

Islanding effect should be prevented in grid-connected photovoltaic system, the active andpassive detecting methods in use nowadays are analyzed in this paper.

孤岛效应是光伏并网系统中必须解决的问题。本文分析了孤岛效应产生的原因和目前常用的被动和主动的检测方法。

Note: Islanding is either a deliberate emergency measure, or the result of automatic protection or control of action, or the result of human error.

注：电网解列既可能是一种慎重的紧急措施，或是自动保护或调节作用的结果，或是人为错误造成的。

The disadvantages of the conventional active frequency drift method in various load conditions are analyzed for islanding prevention.

本文详细分析了传统有源频率扰动法在孤岛效应发生时，在不同负载特性下并网逆变器输出频率的变化特点和不足。

Stemming from this knowledge, this paper proposes several eigen-analysis-based indices, which are necessary conditions, to estimate the feasibility of islanding control to power systems.

据此，提出基于特征分析的解列可行性判断方法，给出解列可行的3个必要条件，通过对若干典型系统的仿真计算，证明方法的有效性。

First, in view of the development of DGs, such standards for the islanding as IEEE929-2000 and IEEE1547-2003 are introduced.

首先根据DG的发展状况介绍了2个孤岛处理标准IEEE929—2000和IEEE547—2003，前者禁止孤岛存在，后者允许有意识的孤岛运行。

It is difficult to detect islanding in distributed generation research, especially when power balance between the output of inverter and the load.

孤岛检测是分布式发电并网研究的难点，特别是在逆变器输出与负载功率平衡时难以检测出孤岛。

In this paper, focus the power network structure change, especial the power network islanding, an algorithm of dynamic power flow for islands in DTS system is proposed.

中文摘要：本文着眼于电网结构改变，特别是电网分岛的情况，设计了一套适用于DTS系统的多岛动态潮流算法。

So, all grid-connected inverters should have the ability of detecting islanding status and stopping the run mode of grid-connect.

所以，并网逆变器都应具有检测出孤岛状态并停止并网运行的能力。

Islanding effect should be prevented in grid-connected photovoltaic system, the active andpassive detecting methods in use nowadays are analyzed in this paper.

孤岛效应是光伏并网系统中必须解决的问题。

A new scheme based on dq transformation and positive feedback is provided to detect islanding. Based on the new scheme, methods of voltage positive feedback and frequency positive feedback by dq transformation are proposed in this paper.

为了检测孤岛效应，本文提出了基于dq变换和正反馈的新检测策略，基于这个策略，提出了基于dq变换的电压正反馈和频率正反馈两种检测方法。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48