Fixed equations in GAST

[jinningwang]

No description provided.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[codecov]

Codecov Report

Merging #210 (a59e7a8) into develop (ccde557) will decrease coverage by 0.01%.
The diff coverage is 76.66%.

@@             Coverage Diff             @@
##           develop     #210      +/-   ##
===========================================
- Coverage    78.86%   78.84%   -0.02%     
===========================================
  Files          114      116       +2     
  Lines        12186    12260      +74     
===========================================
+ Hits          9610     9666      +56     
- Misses        2576     2594      +18     

Impacted Files	Coverage Δ
andes/core/block.py	81.86% <ø> (ø)
andes/core/solver.py	62.69% <ø> (ø)
andes/models/__init__.py	100.00% <ø> (ø)
andes/models/exciter/esdc2a.py	100.00% <ø> (ø)
andes/models/exciter/esst3a.py	100.00% <ø> (ø)
andes/models/renewable/regca1.py	98.41% <ø> (ø)
andes/models/renewable/regcvsg2.py	100.00% <ø> (ø)
andes/models/vcomp/__init__.py	100.00% <ø> (ø)
andes/utils/sympy.py	17.64% <17.64%> (ø)
andes/core/symprocessor.py	13.06% <60.00%> (+0.63%)	⬆️
... and 8 more

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