| 引用本文: | 吉 平,戴朝波,武守远.有源电力滤波器并列运行方案[J].电力自动化设备,2010,(12): |
| JI Ping,DAI Chaobo,WU Shouyuan.Parallel operation scheme of active power filter[J].Electric Power Automation Equipment,2010,(12): |
|
| 摘要: |
| 在某些实际工业生产中，为保证供电可靠性会采用经闭合母联断路器连接的2条母线向非线性负载供电的结构。采用无源滤波器治理谐波时，谐波电流会在母联断路器和各支路间流动。针对该运行工况，提出了有源电力滤波器（APF）并列运行的谐波治理方案。详细分析了谐波穿行现象产生的原因以及APF并列运行抑制谐波穿行的原理；通过PSCAD ／ EMTDC软件仿真对分布式无源滤波方案和APF并列滤波方案的滤波效果进行了比较，对负载扰动、无源滤波支路投退等运行工况进行仿真分析。结果表明：APF并列运行的谐波治理方案能有效解决分布式无源滤波方案中存在的谐波电流吸收率低、谐波电流穿行、滤波支路易过载、电能质量较差等问题，具有较强的实用价值。 |
| 关键词: 有源电力滤波器 并列运行 谐波穿行 无源滤波器 电能质量 |
| DOI： |
| 分类号: |
| 基金项目: |
|
| Parallel operation scheme of active power filter |
|
JI Ping, DAI Chaobo, WU Shouyuan
|
|
China Electric Power Research Institute，Beijing 100192，China
|
| Abstract: |
| To ensure the power supply reliability，sometimes two buses may be connected by a closed circuit breaker to feed nonlinear loads. When the passive filter is applied in harmonic suppression，the harmonic current may flow through the circuit breaker and filter branches. A harmonic suppression scheme with APFs （Active Power Filters） in parallel operation is developed. The causes of harmonic walking-through and the principle of its restraint by APFs are analyzed. The filtering effect is compared between the distributed passive filters and parallel APFs based on PSCAD／EMTDC for two operating conditions：the load disturbance and the on-off of passive filters. Simulative results show that，the harmonic suppression scheme with APFs in parallel operation has no problems existing in the harmonic suppression scheme with distributed passive filters，such as low harmonic current absorption ratio，harmonic current walking-through，filtering branch overload，poor power quality and so on. |
| Key words: active power filter parallel operation harmonic walking through passive filter power quality |
