电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2015年
15期
91-95
,共5页
时空矢量图%同步电抗%功角%稳定性%有功功率
時空矢量圖%同步電抗%功角%穩定性%有功功率
시공시량도%동보전항%공각%은정성%유공공솔
time and space vector diagram%synchronous reactance%power angle%stability%active power
为研究同步发电机的稳定性和有功功率，利用凸极同步发电机的时空矢量图推导出其电枢反应的电动势平衡方程。在此基础上，通过DDSZ-1型凸极同步发电机接入三相对称负载的运行特性的实验结果，分析研究其转子磁路的结构对运行稳定性的影响，得出如果转子气隙较小则并联运行时发电机的稳定度较差，反之则稳定性较好的结论。最后利用同步发电机功角时空矢量图，推导出其电磁功率计算公式，并得出转子气隙对有功功率的影响，即在空间范围内各方向等比例增大转子气隙可以增加电机输出的有功功率。
為研究同步髮電機的穩定性和有功功率，利用凸極同步髮電機的時空矢量圖推導齣其電樞反應的電動勢平衡方程。在此基礎上，通過DDSZ-1型凸極同步髮電機接入三相對稱負載的運行特性的實驗結果，分析研究其轉子磁路的結構對運行穩定性的影響，得齣如果轉子氣隙較小則併聯運行時髮電機的穩定度較差，反之則穩定性較好的結論。最後利用同步髮電機功角時空矢量圖，推導齣其電磁功率計算公式，併得齣轉子氣隙對有功功率的影響，即在空間範圍內各方嚮等比例增大轉子氣隙可以增加電機輸齣的有功功率。
위연구동보발전궤적은정성화유공공솔，이용철겁동보발전궤적시공시량도추도출기전추반응적전동세평형방정。재차기출상，통과DDSZ-1형철겁동보발전궤접입삼상대칭부재적운행특성적실험결과，분석연구기전자자로적결구대운행은정성적영향，득출여과전자기극교소칙병련운행시발전궤적은정도교차，반지칙은정성교호적결론。최후이용동보발전궤공각시공시량도，추도출기전자공솔계산공식，병득출전자기극대유공공솔적영향，즉재공간범위내각방향등비례증대전자기극가이증가전궤수출적유공공솔。
To study the stability and active power of the synchronous generator, this paper deduces the electromotive force balance equation of its armature reaction by use of its time&space vector diagram. Based on this, through the result of the operation characteristics experiment of DDSZ–1 salient pole synchronous generator connected to the three-phase symmetrical load, it analyzes the influence of its rotor magnetic circuit structure on operation stability, and draws the conclusion that the smaller the rotor air-gap is the poorer its stability of parallel operation, vice versa. Finally, with synchronous generator power angle of time and space vector diagram, its electromagnetic power calculation formula and the influence of the rotor air-gap on active power are deduced, i.e. increasing the rotor air-gap to each space direction proportionally can increase its active power.
