Improve Power System Reliability XingLongZhuang Coal Mine Of Research And Design

Power system reliability direct embodiment of the power supply system, strengthen the power supply load of technical management of the power supply reliability, and constantly improve the reliability index is the eternal theme, power supply system is the system of the important guarantee the safe and economic operation.This paper mainly company limited by shares of yanzhou coal joint-stock company 35KV substation xinglongzhuang coal mine safety and reliability of power supply system upgrading transformation on the theoretical and experimental analysis.First of all, access to large amounts of material, system analysis yanzhou coal Co., LTD 35KV substation power supply system in xinglongzhuang coal mine the basic structure and characteristics of the power supply system at home and abroad, and compared with the advantages and disadvantages of existing fields, and puts forward the developing direction of mine power supply system and the current research hot spot and further confirm the power supply system design and transformation nephrites significance.Secondly, introduced the every harmonic current power supply system and what the necessary analysis and compensation, achieve the smooth, to filter system voltage harmonic, improving power factor effect.Finally, the system for the design to actual operation commissioning, obtain corresponding experimental results and the analysis of the results, so as to further improve the system upgrade design.This paper appear in xinglongzhuang coal mine of the power supply system, starting reactive impact to the test 6kV busbar maximum reactive impact for 15Mvar; The average power factor and low, cast in for power factor for 0.8 or so after; Harmonic current, voltage distortion rate off-gauge problems, according to the actual situation of xinglongzhuang coal mine and formulate the pertinent solution: according to 3,5,7,11 times geminal wave synthetically harness paragraph 2, and points decorate. In a period of busbar compensation capacity and install filtering device for 9Mvar; In the second segment install filtering device busbar compensation capacity for 3Mvar; Through the filter unit realize compensation and filtering effect, through the thyristor valve set and digital control system to control the output capacity of phased reactor realize inhibit voltage fluctuations and improving power factor. Successful governance system harmonic and guarantee the power factor in above 0.95 while the power supply system, improve the stability and reliability.