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分布式光伏发电接入系统并网要求.ppt

  • 2026-04-29 00:36:44
分布式光伏发电接入系统并网要求.ppt
分布式光伏并网有明确边界：用户侧就近消纳、10kV 及以下接入、单点装机不超 6MW，覆盖全部屋顶与光电建筑一体化项目。小型系统≤1MWp，中型 1MWp~30MWp，大型＞30MWp，容量划分直接决定接入电压与技术标准。
并网执行国标与网规双重要求，核心硬指标清晰可落地。总容量不超上一级变压器最大负荷 25%，并网点短路电流与额定电流比≥10；200kW 及以下 380V 接入，200kW 以上 10kV~35kV 接入。电能质量严格受控：谐波、电压偏差、不平衡度、波动闪变、直流分量均符合国标，三相电压不平衡度≤1.3%，短时≤2.6%，直流分量不超交流定值 0.5%。
页数太多不在一一叙述........
电压 / 无功调节分等级执行：380V 并网小型系统，有功＞50% 额定功率时功率因数≥0.98，20%~50% 时≥0.95；10kV~35kV 中型系统功率因数 0.98 超前～滞后连续可调。电压响应、低电压穿越、频率响应设硬时限：电压＜50% UN 或≥135% UN，0.2 秒内脱网；380V 并网频率超 49.5Hz~50.2Hz，0.2 秒内停机。
安全保护必备五项功能：过流耐受、短路限流、防孤岛、逆功率保护、延时并网。逆功率超额定 5%，0.5~2 秒脱网；电网恢复后延时 20 秒～5 分钟方可重并。计量与通信简化适配：10kV~35kV 计量点配主副表，380V 项目仅需电量上传，可采用无线公网通信。
接入方案共 13 种，8 种单点、5 种组合，覆盖 380V 与 10kV，分自发自用余量上网、统购统销两种模式，匹配不同场景快速落地。
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  1. CONNECT:[ UseTime:0.000766s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000926s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000354s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000328s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000568s ]
  6. SELECT * FROM `set` [ RunTime:0.000235s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000701s ]
  8. SELECT * FROM `article` WHERE `id` = 501145 LIMIT 1 [ RunTime:0.001028s ]
  9. UPDATE `article` SET `lasttime` = 1777604463 WHERE `id` = 501145 [ RunTime:0.012295s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000325s ]
  11. SELECT * FROM `article` WHERE `id` < 501145 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000594s ]
  12. SELECT * FROM `article` WHERE `id` > 501145 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000435s ]
  13. SELECT * FROM `article` WHERE `id` < 501145 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001087s ]
  14. SELECT * FROM `article` WHERE `id` < 501145 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.022627s ]
  15. SELECT * FROM `article` WHERE `id` < 501145 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.012910s ]
0.126416s