The paper introuduces application parameters and foundamental characteristics of the newly developed high energry ZnO ceramics linear resistor,the results of study are also re- ported.

After a study of various existing de-excitation methods of generators, a new method of using the linear resistor and nonlinear resistor together as the de-excitation resistance is presented.

The author present a new developed neutral grounding resistor based on zinc oxide linear resistors which features high thermal capcity, low heating level, stable resistivity, safely and excellent service performance.

Finally,the usage of high power non-liner damp resistance was submitted.

If the arc generated during the make or brake of electrodes of spark-test apparatus was regarded as a non-linear resistance, non-explosion assessing intrinsic safety method can be established.

The ZnO non-linear resistance is used in many power electronics circuit to protect against transient over voltage and surge energy.

The huge-scale synchronous generator de-excitation with non-linear resistance is discussed in this paper.

Usually,varistors are adopted in de-excitation(DE)of large generators.

A new de-excitation method, in which capacitors with parallel connected varistor are connected to both terminals of field winding described in literature[1].

The 10 kV network neutral grounding by nonlinear resistance as a new neutral grounding mode for power system is brought forward.

This paper puts forward an implementation model for a nonlinear resistance in the Van Der Pol circuit,measures its voltampere characteristic,and fits the characteristic curve through Matlab software.

AC parameters measuring system of nonlinear resistances,which can adjust AC power source automatically,is developed,based on function generator MAX038,general multiplication AD734,data collecting card and computer with A/D and D/A port.