1. Inductance - capacitance circuit having infinite reactance, zero susceptance at resonance.

2. Base frequency equivalent reactance and susceptance of SVC are expressed as an explicit function of its control angle and Newton-Raphson power flow equations are derived.

3. The fixed and controlled compensation capacities obtained with the probabilistic distribution of shunt susceptance.

4. Under given system condition, the sensitivity index of bus voltage to shunt susceptance indicates the effective compensation location instead of the necessary rote.

5. Inductance - capacitance circuit having zero reactance , infinite susceptance at resonance.

6. The robot can complete water temperature, depth and acoustic susceptance detection, water imaging and other works and has the advantages of light weight, flexibility, reliable work and the like.

7. Then, an efficient method for upgrading the reversibility of full bus admittance matrix of a distribution network is proposed by perturbing shunt susceptance.