Tune Contained Automatic Tracking Compensation Arc Small Current Line

Firstly, this article aiming at the condition and characteristic of Non-grounding network has carried on the theoretical analysis. From this draws out normal operation status in arc suppression coil grounding neutral system, as well as compensation principle of arc suppression coil when single-phase earth.Secondly, this paper has in detail enumerated the relative mature capacitance current examination method of network, has carried on the principle analysis and the equation development to these examination methods, and has carried on the analysis to their precise degree and the feasibility.In above fundamental research, this topic successfully developed the auto-tuning arc suppression coil with switched capacitors which takes the single-chip as the core. This equipment is composed by the reactor, the controller and the combination control tank. The reactor increases two windings on the inductance core. On secondary windings has the different capacity of capacitors. The arc suppression coil controller take the P89C51RD2 single-chip as core, 12-bit A/D module MAX197 is A/D conversion chip with high accuracy. In addition the information of fault can be printed by the stylus printer; the man-machine contact surface uses the big screen LCM and the spot-touching type mechanical key. The controller also has the electricity storage module to record the historical fault information, and is equipped with the communication module MAX232. The control tank which uses the standard GGD switch tank is composed by the CKJ series vacuum contactors and the capacitors.The method that using the two-point algorithm to compute capacitive current is simple to compute, high precision moreover is suitable to arc suppression coil with switched capacitors; Using "following adjustment" can omit the on-load switch and the damping resistance box to simplify the equipment, reduce the cost and reduce the failure rate. This topic proposes one kind of new high-voltage experiment, feeding back the result of experiment to the controller software part to enhance the precision of the arc coil suppression compensation greatly. Moreover, tests the proof through this experiment, the control system can work correctly may the precision measuring electric quantity parameter and carries on effectively to the capacitor throws the files operation.Finally, this article has carried on the summary to the fault selection theory, has enumerated several kinds of commonly used route selection algorithms, and has narrated the influence of arc suppression coil to the fault selection. And the paper proposes that using the multi-algorithms to carry on the route selection as the criterion to enhance the success ratio. It also analyzes method of controller and the fault selection installment synthesis use.