2.2.2. Non-Linear Loads

With the harmonic spectrum of non-linear loads and their load current obtained from the fundamental power flow, these loads are modelled as constant current sources [24]. The magnitude of the current source is obtained with Equation (4), and its phase angle is obtained with Equation (5):

$$\mathbf{I}\_{\mathbf{h}} = \mathbf{I}\_{\text{rated}} \frac{\mathbf{I}\_{\text{h\\_spectrum}}}{\mathbf{I}\_{\text{1\\_spectrum}}} \tag{4}$$

The phase angle of the current source is obtained as:

$$
\boldsymbol{\Theta}\_{\text{h}} = \boldsymbol{\Theta}\_{\text{h\\_spectrum}} + \mathbf{h} \left( \boldsymbol{\Theta}\_{\text{l}} - \boldsymbol{\Theta}\_{\text{h\\_spectrum}} \right) \tag{5}
$$

where:

θ<sup>1</sup> : Phase angle of the rated current at fundamental frequency;

θh\_spectrum : Phase angle of the harmonic source current spectrum.


**Table 1.** Load modelling.

*2.3. Capacitor Banks*

Modelling of the capacitor banks is presented in Table 2.

**Table 2.** Capacitor banks modeling.


For HPFA, the capacitive susceptance (B) is to be multiplied with 'h' for 'h' order frequency.
