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2.5MW(构网型)储能技术方案.pdf南瑞继保 2.5MW 构网型储能方案，核心是构网型 PCS + 变流升压一体化，可直接替代同步机提供惯量支撑，弱电网与孤网场景稳定运行。系统由 4 台 625kW PCS-9567 变流器、2600kVA 35kV/0.69kV 欧式干式箱变集成，整机尺寸 10000×3000×3000mm，IP65 防护，适应 - 35~50℃环境，3000 米以上海拔可降额使用。构网型控制模拟同步机转子运动方程，无锁相环自同步，毫秒级离并网无缝切换，孤网频率偏差≤±0.5Hz，短路支撑达 3 倍额定电流，一次调频、调压、阻尼控制全覆盖，抑制次超同步与中高频振荡。PCS 采用三电平拓扑，最高效率 99%，充放电切换＜0.2 秒，支持四象限运行、高低电压穿越、黑启动，保护覆盖交直流过压 / 过流、孤岛、绝缘、反接、过温等全场景。变流升压一体机集成干式变压器、负荷开关熔断器、通讯动力柜，内含 UPS、双网交换机、辅助供电变压器，实现功率变换、升压、保护、通讯一体化部署，现场安装快、维护简。该方案以电压源特性补齐新能源电网惯量短板，兼顾并网与孤网，适配集中式储能、弱电网支撑、孤网供电、黑启动等场景，是高可靠、高效率、高集成度的构网型储能标杆方案。
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