| 1. | Two schemes are processed in power flow computation . the first is forward - backward combined with compensation current 配电网潮流计算有辐射网和弱环网两种情况。 |
| 2. | The adaptive control is adopted to trace the error , and the compensation current is adjusted according to it , so the error will always keep low 在此基础上,引入了自适应控制的思想,跟踪误差的变化而进一步调节补偿信号的增益,实现闭环测量,扩大量程。 |
| 3. | By regulating the compensation current injecting into the compensation winding of the reactor , the reactor inductance at different harmonic frequencies can be independently and continuously adjusted 有源电抗器由一对耦合绕组和一个补偿电流发生器组成,通过控制有源电抗器补偿绕组中的谐波磁通补偿电流,可以独立且连续地调节电抗器在不同谐波频率下的电感量。 |
| 4. | In this thesis , firstly , a new distortion current detection theory and approach based on the least compensation current ( lcc ) is presented , and an apf using the new lcc detection method is investigated 首先,在对电力谐波的产生、危害及目前最新的治理措施进行必要的论述和分析的基础上,提出一种基于最小补偿电流的畸变电流检测的新理论和方法和相应的补偿电流最小的单相有源电力滤波器。 |
| 5. | Two generating methods of compensation current are also proposed for the purpose of eliminating detuning or limiting harmonic voltage contents , in which the compensation current is the weighted superposition of filter harmonic currents or voltages and the regulating factor 针对消除失谐或限制谐波电压含量的不同控制目标,提出了谐波磁通补偿电流的两种生成方法,补偿电流分别是滤波器电流或母线电压中各次谐波分量与调节系数的加权合成。 |
| 6. | Forward - backward method is usually used in radial distribution networks . in weakly meshed distribution networks compensation current method is used . it open the loops on some nodes , on the open points compensation currents are used to simulate the power flow before opening 其中之一是采用配网潮流计算中常用的前推回推法计算辐射状网络潮流,对于弱环网的处理时采用补偿电流法,其思想是将环打开,在开环处以一电流源模拟开环前的状态。 |
| 7. | To achieve the mitigation of multiple harmonics with a single lc series branch , a novel auto - tuning filter based on the nonlinear frequency characteristic of inductance of an active reactor is presented , where the active reactor consists of a pair of coupled windings and a generator of harmonic magnetic flux compensation current 摘要提出了一种基于有源电抗器的新型自动调谐滤波器,利用电感的非线性频率特性,实现了单条lc串联支路抑制多次谐波的目标。 |
| 8. | Can technology traits are analyzed , and can technology is applied on the power factor dynamic compensation system . on the basis of analyzing thoroughly the theories and techniques , software module of power factor dynamic compensation system are classed and their time - period is analyzed . the techniques of real time sampling idle current and generating compensation current are simulated with software 在分析电网的频率特性和功率因素动态补偿系统的性能特点基础上,对功率因素动态补偿系统的软件功能模块进行了层次划分和时序特点分析;对无功电流实时检测、无功补偿电流的产生等技术实现了软件的仿真。 |
| 9. | The action of current tracking control circuit is : 1 ) the instantaneous reactive current yield the instruction current of the compensating current according to the reactive current testing circuit got , 2 ) according to the interrelationship of the instruction current and the real compensating current , yields pwm ' s control signal controlling each units of main circuit ducting , the result of controlling pledges the compensation current following the tracks of his instruction current ' s change 电流跟踪控制电路的作用是: 1 )根据无功电流检测电路得到的瞬时无功电流得出补偿电流的指令电流, 2 )根据补偿电流的指令电流和实际补偿电流之间的相互关系,得出控制主电路各个器件通断的pwm控制信号,控制的结果保证补偿电流跟踪其指令电流的变化。主电路的作用是根据电流跟踪控制电路输出的控制指令,产生实际的补偿电流。 |
| 10. | In order to obtain the most economic benefits , the paper utilized the theory of " homalographic characteristic " and " share alike compensation current characteristic " to build up the best compensation relation for " hour - current " curve applied to transformer substation and for " length - current " curve applied to distribution line 以获得最大经济效益为目标,利用“等面积特性”和“补偿电流等分特性”理论。推导了应用于变电站的“时间?电流”曲线关系中存在的最佳补偿关系,以及应用于配电线路的“长度?电流”曲线关系中存在的最佳补偿关系,及补偿后的经济效益计算模型。 |