Pressure compensation valve and hydraulic control system

A pressure compensation valve, comprising:

• a valve sleeve, wherein an oil inlet hole, an oil return hole, and an oil feedback hole are disposed on the valve sleeve;
• an inner wall of the valve sleeve is provided with a connecting corner;
• and
• the connecting corner is located between the oil return hole and the oil feedback hole;
• a valve seat connected to the valve sleeve;
• and
• a valve core slidably disposed inside the valve sleeve in an axial direction of the valve core to block or open the oil return hole, wherein the valve core has a first valve core segment and a second valve core segment, the first valve core segment and the valve seat enclose to form a first cavity, an oil passing gap is disposed between the first valve core segment and the valve seat, the oil passing gap communicates with the first cavity and the oil feedback hole, a sealing portion is disposed between the first valve core segment and the second valve core segment, and the sealing portion is configured to abut against the connecting corner to block a gap between the valve core and part of the valve sleeve between the oil return hole and the oil feedback hole.