说明：  演示使用的power_3phsignaldq离散三相位可编程源代码块生成1 p.u.，正序电压15度。在0.05秒的正序电压增加到1.5 p.u.，在0.1秒的不平衡是由一个0.3 p.u.负序分量相位与30度的引入。正序分量的大小和相位用两种不同的方式进行评估
(The power_3phsignaldq demo uses a Discrete Three-Phase Programmable Source block to generate a 1 p.u., 15 degrees positive sequence voltage. At 0.05 second the positive sequence voltage is increased to 1.5 p.u. and at 0.1 second an imbalance is introduced by the addition of a 0.3 p.u. negative sequence component with a phase of -30 degrees. The magnitude and phase of the positive-sequence component are evaluated in two different ways:)