Load Models Flashcards
1
Q
Why are load models needed?
A
To simulate the impact of changes to the power grid, including dynamic power supply and demand
2
Q
Traditional transmission level power flow analysis assumes that …
A
all loads are of constant power (both real and reactive)
–> power and energy consumption are independent of line voltage
3
Q
Distribution level analysis requires load models that are …. and ….
A
voltage-dependent and time-varying
4
Q
How is the model type to be used determined?
A
By behaviour of the end-use load and purpose of study. These models can be used to represent a single load or a combo of loads.
5
Q
Physical load Model:
1. ZIP model is an effective load model if …
- When may it not be appropriate?
- Physical models can be significantly more complicated than ZIP models.
A
- voltage is the only factor that varies, e.g. a simple on/off light bulb.
- If load is controlled in a more complex manner, e.g cooling
