With a brief introduction of the structure and installation method of the "Π" type rigid overhead contact system(OCS),and the situation of the present domestic production,this paper compares the strenghth and weakness of the "Π" type rigid OCS with the resilient OCS.

With an introduction to the main characteristics of flexible catenary and rigid catenary as well as their utilization in some foreign countries, the author argues that China shall lay stress on the development of overhead rigid catenary, because the present condition is very favorable for domestic production.

The components and functions of the inspecting and measuring car of rigid catenary system, the test items and their principle and some problems existing in tests are presented.

With the development of rail transit in modern cities and the construction of OCS in the tunnel with low headroom ,rigid catenary system are used in broad, now parameters inspection and evaluation about it have become a new hot focus in exploitation and study of catenary parameters inspection system.

On Guangzhou metro Line 2 a rigid catenary system was firstly adopted in China.

Study on dynamics of rigid suspension catenary;

The finite element model of the free vibration for the rigid suspension catenary and pantograph is set up.

Based on this, the physical model of the rigid suspension catenary is established.

Construction technology of rigid suspension of overhead contact system;

This paper, firstly, introduce the general conception, the application, as well as the research of pantograph and rigid catenary.