What are the difficulties for integration of Renewable Energy into Existing Grid

 Nowadays Renewable integration (RE) is knee interest to every country because each has goal to reach zero carbon emission but to integrated into existing grid there are significant problems such as inertia problems,voltage Stability,Frequency instability to overcome these problem system studies has uter most important Because it will give better idea how the system will behave in dynamic state so there are numerous technical evolve to slove the RE problems that can we see in next blog 

Why transformer is called constant flux machine?

 Transformer work on the principle of electromagnetic induction during no-load load current(I₂) is zero because the load is not connected on secondary of the transformer
          when an alternating voltage is applied to the primary of the transformer this alternating current link with the primary winding and produce alternating flux due to this current (I₁) starts flowing through winding same alternating flux link with the secondary winding but current (I₂) will be not flowing due to open circuit in the secondary winding as seen in fig.1

Fig No.1 Phasor Diagram on No Load

    Suppose if we connect inductive load across secondary winding the load current (I₂) start flowing to make flux constant transformer induce another current component(I₁₀) in phase opposition to load current (I₂) as shown in fig.2 and hence transformer is known as constant flux machine

Fig No.2 Phasor Diagram on Inductive Load