汽轮发电机进相能力分析及试验验证

发电机进相运行是发电机在保持正常有功输出的情况下调节励磁，使发电机欠励磁运行，并从系统中吸收无功的一种运行方式，其进相深度一般受发电机静态稳定极限、定子端部构件发热等因素制约。在对发电机进相运行特征、功角变化及进相运行限制因素分析的基础上，以某火电厂600 MW发电机组为例，分析并记录发电机功角、定子电压、厂用电压等电气量及发电机端部温升在进相试验中的实时数据和变化情况，验证了发电机进相运行深度及其限制因素，检验了自动励磁调节器在进相运行中的调节性能及稳定性，为发电机组后续进相运行实践提供数据支撑，提出的改善策略可有效提升机组进相运行能力。

Analysis and Test Verification of Turbine Generator's Leading Phase Operation Capability

The generator leading phase operation is an operation mode in which the generator adjusts the excitation to make the generator under-excited and maintains reactive power from the system while maintaining the normal active output. The leading phase depth is generally affected by the static stability limit of the generator, the stator end member heating and other factors. Based on the analysis of generator leading phase operation characteristics, power angle change and leading phase operation limit factors, a 600MW generator in a thermal power plant was taken as an example to analyse and record the electrical angle of the generator, stator voltage, factory voltage, the real-time data and changes of the temperature rise of the generator end in the leading phase test. The leading phase running depth of the generator and its limiting factors was verified, and the regulation performance and stability of the automatic excitation regulator in the leading phase operation was tested. It provided data support for the follow-up leading phase operation of the generator set. The proposed improvement strategy can effectively improve the leading phase operation capacity of the generator set.