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省级高压电网在环网时横向故障的计算方案及其数据库实现

Caculation Project of Transverse Fault of Province Lever Highvoltage Network and Its Database Realization

【作者】 孔健

【导师】 孙鸣;

【作者基本信息】 合肥工业大学 , 电力系统及其自动化, 2004, 硕士

【摘要】 电力系统横向故障计算是电气设备和电网接线选择的重要依据,是继电保护整定计算的基础和前提内容。现今的高压电网,结构复杂,运行方式变化繁多,需要计算的故障点多,采用传统的手工方法计算困难极大,既不符合实际,也不能满足快速精确计算的要求。利用计算机技术来进行电网故障计算则可以克服以上缺点,故障计算的自动化是电力行业发展的趋势。 本文首先根据系统的要求,综合考虑各种运行方式变化,提出合理的零序电流,分支系数的计算方案;然后采用节点阻抗矩阵作为系统的数学模型,推导出基于支路追加法的阻抗矩阵快速补偿优化算法,从而实现计算方案;最后以Micosoft Access为工具设计出完整的故障计算数据库。 以上研究工作由Visual C++6.0编程实现,并应用于安徽电网,实践证明了它的正确性。

【Abstract】 Electrical power system fault calculation is an important reference of electric equipment choice, electric network design choice and relaying protection setting calculation. Now the highvoltage network is very complicated ,its mode of operation is multivariant. It is difficult to deal with handwork. Computer science can overcome it. So the automation of fault calculation is the developmental current of electric power industry.The research job includes bringing a project about fault calculation, using node impedance matrix as maths model of network to derive the arithmetic based on the fundamental of modifying impedance matrix by adding the branch , building the whole database with Micosoft Access.The whole project is realized with Visual C++6.0. It is applied to Au Hui electric network, and is proved correct.

  • 【分类号】TM769
  • 【被引频次】1
  • 【下载频次】73
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