The invention relates to a real-time regional voltage coordination control method. The method comprises the following steps of (1) determining a pilot bus, a control bus and a control variable; (2) establishing a sensitivity relation among a pilot bus voltage, a control bus voltage and a control reactive variable; (3) establishing a coordination principle: 1 space dimensional coordination; 2 time dimensional coordination; (4) performing continuous processing on capacitor/electric reactor switching within a control period, solving an expanded coordination two-level voltage control model, and obtaining capacitor/electric reactor and unit reactive output; (5) establishing a linear constraint condition, and expressing by control variables; (6) performing safety constraint condition correction and summarizing for the capacitor/electric reactor reactive output, and performing capacitor/electric reactor switching; (7) after performing capacitor/electric reactor switching, re-collecting data; and (8) establishing a regional coordination voltage control model only considering the unit reactive output under a new state, and obtaining a unit reactive control policy. According to the real-time regional voltage coordination control method, reactive voltage coordination control for a wind power plant is realized.