Table 3 Optimization Process for System Stability and Economy.

From: Research on the configuration strategy of active support long-and short-term energy storage devices based on ESD-considered short circuit ratio

Algorithm 1 : Optimization Process for System Stability and Economy

1. Initialization

Input the quantity and installation locations of RESs and the total ESD construction cost;

Determine the configuration of the ESDs according to the total construction cost;

Extract n installation locations from m potential buses;

2. Iteration

Calculate the MinECSCR of RES buses for various installation cases when each ESD is connected at maximum power by using (13);

3. Comparison

Determine the maximum value of MinECSCR by using (16)–(19) to determine whether the maximum value of MinECSCR is equal.

If so, proceed to step (4); Otherwise, proceed to step (5);

4. Determine the maximum value of MaxECSCR by using (18);

5. The installation locations are the optimal locations of ESDs,record the installation buses of each ESD;

6. Install the RESs and ESDs at the corresponding buses;

7. Calculate the ECSCR in real-time by using (13);

8. Judgement

If ECSCR is less than 3, select the weight coefficient ;

If not, select the weight coefficient ;

9. Update the power of each ESD by using (27)–(29).

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