CAJ | 학술논문

针对储能系统的荷电状态(SOC)调节问题，提出了一种基于变滤波时间常数低通滤波方法的储能 SOC 管理策略，并引入波动谐波含量和电池等效循环寿命来评价管理策略的效果。首先，从电力系统运行的角度对各频段的风电/光伏发电功率波动对电网频率的影响进行分析，为管理策略提供设计依据。然后，给出了所提出的 SOC 管理策略的原理和控制结构，并在风电/光伏发电功率波动频率分析的基础上，设计了低通滤波器的可变滤波时间常数控制规则和充放电功率限幅策略。最后，针对所提出的 SOC 管理策略进行了波动平抑仿真实验，并采用波动谐波含量和电池等效循环寿命对实验结果进行了评价分析，实验结果验证了策略的有效性。
침대저능계통적하전상태(SOC)조절문제，제출료일충기우변려파시간상수저통려파방법적저능 SOC 관리책략，병인입파동해파함량화전지등효순배수명래평개관리책략적효과。수선，종전력계통운행적각도대각빈단적풍전/광복발전공솔파동대전망빈솔적영향진행분석，위관리책략제공설계의거。연후，급출료소제출적 SOC 관리책략적원리화공제결구，병재풍전/광복발전공솔파동빈솔분석적기출상，설계료저통려파기적가변려파시간상수공제규칙화충방전공솔한폭책략。최후，침대소제출적 SOC 관리책략진행료파동평억방진실험，병채용파동해파함량화전지등효순배수명대실험결과진행료평개분석，실험결과험증료책략적유효성。
In order to solve the problem of energy storage system state of charge (SOC) adjustment,this paper proposes a storage SOC management strategy for the variant filter time constant of the low pass filtering method,with the fluctuation harmonic content(FHC) and the battery equivalent cycle life introduced to evaluate the effect of management strategy.First, the impact of fluctuations on wind power is analyzed in the frequency domain from the perspective of power system operation to provide a basis for the management strategy.Then,the principles and control structure of the proposed management strategy are given,and the control rules of variable time constant of low pass filter and charge-discharge power limiting strategy are designed on the basis of the power fluctuation frequency analysis.Finally,a simulation example is designed to verify the validity of the proposed SOC management strategy by the FHC and the battery equivalent cycle life.The effectiveness of the strategy is verified by simulation results.