PSPICE non sinking voltage source

It is difficult to comment on this without seeing the complete circuit. Can you share a image of full circuit to understand the total current flow.

All I need is a non-sinking voltage source.basic clamp diode application but vsource is sinking ı dont wanna sinking source. Because in real world voltage supplies doesnt sinking. So I can see how the zener or tvs diode behaves.

Looking at the circuit, I don't think there is any way to stop the current flowing as current will flow from high potential to low potential (V30 to V31) regardless of the sinking / non sinking voltage source. One way to stop current sink could be placing high resistor(R3), but that would change the design (R1 and R2) to maintain the same gain at the output.

In the real world, DC power supplies usually have a large cap bank on their output so any fast back driving transient will drive current into the supply until the regulation loop shuts down. Creating a model for V31 which mimics a real supply would be non-trivial.  BTW there are power supply units now that are bi-directional.

Since V31 only supplies current to the OPAx192 under quiescent conditions plus a small amount of leakage through D1 try this: Instead of a short, place a fast diode between V31 and D1 (anode to V31, cathode to D1). This will block any transient current into V31 but still bias D1 at ~15 volts and allow it to breakdown.