After all is a half clench good?or the nature strech fingers?General textbook.

Principles of delimitation of the continental shelf,such as principle of natural prolongation,equidistance principle,proportionality principle,and negociation principle,can be applied only based on equitable principle.

While the surrounding countries of the South China Sea have improper understanding of the UNCLOS,abuse of the principle of a natural prolongation,violate the principle of equity,covets the continental shelf interests brought by the sovereignty of South China Sea Islands,the delay of the delimitation of the continental shelf of the South China Sea happens.

On the basis of analyzing disadvantages of principle for all kinds of existing selective leakage protection, this paper analyzed a selective leakage protection system of natural DC according to two branches distribution networks.

Study on the idiosyncrasies of the protection criterion on the basis of the Natural DC selective leakage-protection theory is shown in this article.

On the basis of analyzing disadvantages of principles for all kinds of selective leakage protection being used currently, this paper analyzes a selective leakage protection system of natural directive current according to two branches distribution networks of un-grounding system,and designs a system realized by PC according to this theory.