电力系统保护与控制
電力繫統保護與控製
전력계통보호여공제
POWER SYSTM PROTECTION AND CONTROL
2014年
10期
96-103
,共8页
储能系统%电网故障%功率转换系统%预测电流控制%低电压穿越
儲能繫統%電網故障%功率轉換繫統%預測電流控製%低電壓穿越
저능계통%전망고장%공솔전환계통%예측전류공제%저전압천월
energy storage system (ESS)%grid fault%power conversion system (PCS)%forecast current-controlled%low voltage ride through (LVRT)
为了实现储能装置的功率转换系统（Power Conversion System, PCS）在电网发生对称和不对称故障时的低电压穿越LVRT(Low Voltage Ride Through，LVRT)控制，考虑到目前 PCS 控制方面的不足之处，通过分析预测电流控制原理，推导α-β坐标系中PCS瞬时功率方程，设计了一种电网故障情况下PCS 的LVRT控制策略。建立基于PSCAD的84 kW储能电池PCS系统，针对电网多类型故障进行仿真；在已有控制策略经过仿真验证之后，又将该策略移植到硬件设施中进行实验。仿真结果表明，该控制策略可以有效实现储能系统的低电压穿越功能。
為瞭實現儲能裝置的功率轉換繫統（Power Conversion System, PCS）在電網髮生對稱和不對稱故障時的低電壓穿越LVRT(Low Voltage Ride Through，LVRT)控製，攷慮到目前 PCS 控製方麵的不足之處，通過分析預測電流控製原理，推導α-β坐標繫中PCS瞬時功率方程，設計瞭一種電網故障情況下PCS 的LVRT控製策略。建立基于PSCAD的84 kW儲能電池PCS繫統，針對電網多類型故障進行倣真；在已有控製策略經過倣真驗證之後，又將該策略移植到硬件設施中進行實驗。倣真結果錶明，該控製策略可以有效實現儲能繫統的低電壓穿越功能。
위료실현저능장치적공솔전환계통（Power Conversion System, PCS）재전망발생대칭화불대칭고장시적저전압천월LVRT(Low Voltage Ride Through，LVRT)공제，고필도목전 PCS 공제방면적불족지처，통과분석예측전류공제원리，추도α-β좌표계중PCS순시공솔방정，설계료일충전망고장정황하PCS 적LVRT공제책략。건립기우PSCAD적84 kW저능전지PCS계통，침대전망다류형고장진행방진；재이유공제책략경과방진험증지후，우장해책략이식도경건설시중진행실험。방진결과표명，해공제책략가이유효실현저능계통적저전압천월공능。
In order to realize low voltage ride through (LVRT) by controlling the power conversion system (PCS) of the energy storage device in the situation of both the balance and unbalance grid voltage fault, considering the shortage of power conversion system (PCS), and by analyzing the predictive current control principle, this paper derives PCS instantaneous power equation inα-βcoordinate system and designs a strategy to realize LVRT fault control. Then it builds a single battery module (84 kW) control system based on the PSCAD to simulate multiple types of grid fault. After the existing control strategy is simulated and verified by the software simulation, the strategy is transplanted to the hardware facilities in the experiment. The results show that this control strategy can effectively achieve the LVRT function in the energy storage system.
