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1, Fault location in a neutral ineffectively grounded system when a single-phase-to-earth fault happened is a problem unsolved in the world.

2, An effectively grounded system is one in which the coefficient of grounding does not exceed 0.80.

3, A high-resistance grounded system uses a grounding resistor (NGR) with a low let-through Ethernet to limit ground-fault current.

4, A simulation model of non-solidly grounded system with arc procedure is presented in the paper.

5, The analysis on the grounded system and equal potential ground connection provide theoretical foundations for optimal selection of safety measures for low voltage distribution system.

6, Neutral indirect grounded system (called low-current grounding power system as well) is widely used in the medium and low voltage network in our country.

7, To the high buildings of comprehensive communications,(http://sentencedict.com/grounded system.html) the grounded system is a special important part.

8, In the system of neutral indirectly grounded system, there is high probability of the single phase-to-earth fault.

9, A new method of switching on parallel medium resistance to select the fault line instantaneously when the single-phase earth fault occurs in the arc suppression coil grounded system is proposed.

10, Furthermore, the probability of an arc-flash incident is significantly reduced in a high resistance grounded system.

11, Detecting the fault line correctly is important to clear the fault and improve power supply reliability when single phase fault occurs in neutral indirectly grounded system.

12, The paper introduces the function of lightning protection and integrated grounded system, the existing problems and the solutions.

13, This paper studies single-phase earthing fault selection and fault location in the non-effectively grounded system.

14, The simulation experiments show that the method is reasonable and effective which uses wavelet transform to realize the fault line selection and fault location in small current grounded system.

15, Zero sequence directional power protection is widely used in neutral directly grounded system.

16, This paper proposes a new method for the fault line and fault area detection in radial neutral-point resonant grounded system.

17, Aim to carry out analysis on the distribution of zero-sequence voltage and current of single-phase fault within high resistance grounded system and develop a reliable algorithm for fault detection.

18, Abstract: Zero sequence directional power protection is widely used in neutral directly grounded system.

19, This paper proposes effective methods to detect most kinds of faults occurred in transmission lines which are in effectively neutral grounded system.

20, And the case of information fusion based earth faulty feeder detection for indirect grounded system is developed, which has high sensitive and reliability to detect high impedance ground faults.

21, The authors propose a constant pulse method to control the chaos of ferroresonance in neutral grounded system.