北京pk10开奖

Your Position: Home > News

11 INVESTMENT ANALYSIS TO MITIGATE COSTS OF P 2015/9/14

RomanTargoszandJonathanManson...

10 PQ SOLUTIONS 2015/8/23

PQ solution costs are to be evaluated case by case, but it is possible to provide some useful statistical data based on surveys carried out in a large number of cases. Figure 18.15 charts the proportion of load per sector covered by different types of redundant or mit...

9 COST PER EVENT OF PQ DISTURBANCES 2015/8/14

This section presents cost per event of PQ disturbances related to the frequency of different PQ disturbances by individual industrial sector as illustrated by the bar chart in Figure 18.12....

8 PROFILES BY SECTOR 2015/7/24

Apart from specifying the real PQ cost of wastage, respondents also defined those hypothetical costs that would be potential losses and risk avoided by power systems that had been immunized against the PQ disturbances under review....

7 OTHER DISTURBANCES 2015/7/22

Roman Targosz and Jonathan Manson There have been no other major surveys or studies on costs of PQ phenomena apart from the Leonardo PQ survey already mentioned above. Individual case studies, however, do exist, which cover such phenomena as:...

6 HARMONICS 2015/7/21

The costs of harmonics are probably even more difficult to identify than any other PQ costs already considered. The effects of voltage and current distortions on any equipment or component fall into four categories:...

5 VOLTAGE DIPS 2015/7/20

In the case of voltage dips, surveys are not useful for transferring their data to particular sites, for the following reasons: ? The data on the occurrence of voltage dips is not fully reliable as indices are not freely or easily available and network or user system ...

3 LONG INTERRUPTIONS 2015/7/19

The first point to make is that long interruptions by all major definitions are treated completely separately; that is, outside the context of PQ as defined here. This is because long interruptions are currently referred to as continuity of supply and not as poor PQ. The m...

1 EXPLORING PQ COST 2015/7/18

? Flicker, unbalance, earthing and electromagnetic compatibility (EMC) problemsThe harmonics category may be further subdivided to focus on particular impacts that were treated as separate cases, defined as follows:...

4 SHORT INTERRUPTIONS 2015/7/16

The question arises whether to treat short interruptions separately or together with voltage dips. Some suggest that short interruptions lasting less than 1 min are specific types of voltage dips. Others make a clear distinction between a residual voltage presence in ...

北京pk10开奖