From c0f639e391393995c1bf54bba61bf8b4643b316e Mon Sep 17 00:00:00 2001
From: Your Name <yousu.chen@pnnl.gov>
Date: Wed, 8 Apr 2026 14:30:51 -0700
Subject: [PATCH] store voltage phase angle in updateData (PR #245)

---
 .../modules/dynamic_simulation_full_y/dsf_components.cpp      | 4 ++++
 src/parser/variable_defs/bus_defs.hpp                         | 1 +
 2 files changed, 5 insertions(+)

diff --git a/src/applications/modules/dynamic_simulation_full_y/dsf_components.cpp b/src/applications/modules/dynamic_simulation_full_y/dsf_components.cpp
index 1e453e23c..48ef700c0 100644
--- a/src/applications/modules/dynamic_simulation_full_y/dsf_components.cpp
+++ b/src/applications/modules/dynamic_simulation_full_y/dsf_components.cpp
@@ -1320,6 +1320,10 @@ void gridpack::dynamic_simulation::DSFullBus::updateData(
   if (!data->setValue(BUS_VMAG_CURRENT, rV)) {
     data->addValue(BUS_VMAG_CURRENT, rV);
   }
+  double ang = atan2(imag(voltage), real(voltage));
+  if (!data->setValue(BUS_VANG_CURRENT, ang)) {
+    data->addValue(BUS_VANG_CURRENT, ang);
+  }
   for (i=0; i<p_ngen; i++) {
     if (data->getValue(GENERATOR_MODEL,&name,i)) {
       p_generators[i]->updateData(data, i);
diff --git a/src/parser/variable_defs/bus_defs.hpp b/src/parser/variable_defs/bus_defs.hpp
index 097986fce..6f6dcb042 100644
--- a/src/parser/variable_defs/bus_defs.hpp
+++ b/src/parser/variable_defs/bus_defs.hpp
@@ -83,6 +83,7 @@
  * type: real float
  */
 #define BUS_VOLTAGE_ANG "BUS_VOLTAGE_ANG"
+#define BUS_VANG_CURRENT "BUS_VANG_CURRENT"
 
 /**
  * Bus voltage frequency at current time