Conclusions

Abstract

The Chapter summarises the claim of the whole book: using a probabilistic method combined with power system dynamics can give information on the security of a power system by identifying its vulnerabilities, and by ranking them. By doing this, the significance of different components and their influence on the security of the power system are revealed. Applying this information, it is possible to eliminate those contributing factors that are dominant in order to reduce the residual risk. These results can then be used for grid planning, operation, and maintenance.

The Chapter also discusses the justification of the method, gives the interpretations of the results and proposes ideas to use the method in other ways than the one presented here. The limitations of the method are also presented.

The overall goal of the transmission system development is to strive for balanced system design, where the respective contribution of different components to the system breakdown would be balanced and no component would have a significantly higher influence. This implies that a failure of a single component should not be responsible for a large proportion of the credible chains of events that can lead to a system breakdown. The Chapter also presents some thoughts on how the results may be used for transmission grid and maintenance planning and proposes ideas to use the method in other ways.