风电BOP升压站电容器--1招标公告
风电BOP升压站电容器--1招标公告
澄清问题1:34.5KV 电容器装置,电抗器电抗率是多少?,
回复:竞标文件没有要求,竞标响应人提供建议方案供业主审批。
澄清问题2:34.5KV 电容器装置,是否采用单星形接线开口三角电压保护?,
回复:满足竞标文件及以下保护要求进行合理配置。
澄清问题3,附件2-1 - LWEC Power Capacitor
According to the technical requirement, 19.9kV 200kvar capacitor unit are used to configure the 34.5kV capacitor bank with the capacity of 5Mvar per step. When using 1 series 8 in parallel, the capacity of each step is less than the required 5Mvar. Therefore, we used 1 series 9 parallel units, the actual rated current is approximately 200kvar/19.92kV x 9 x 7step = 632.52A.
回复:可按照实际计算结果进行响应,如果有更优的额定电压和容量组合方案,亦可在投标时提出建议。
澄清问题4:-附件1-2NGCP Standard Specification Part 1-SECTION 02-GENERAL TECHNICAL REQUIREMENTS。
The NGCP requires a high dry arc distance, we assessed that the conventional 40.5kV switch could not meet the dry arc distance requirement, so we used 72.5kV disconnect switches and circuit breakers. Please kindly confirm.
回复:以满足竞标文件要求进行响应。
澄清问题5:附件1_ Volume II.1_ Standard Specification Part 1[NGCP],
We use 8.8 grade hot-dip galvanized bolts, which are better than stainless steel bolts in terms of strength, but also have better corrosion resistance.
回复:满足竞标文件要求,如无法满足,请提出偏差。
澄清问题6:附件1_ Volume II.1_ Standard Specification Part 1[NGCP],,
Our test frequency condition is 50Hz.
回复:满足竞标文件要求,如无法满足,请提出偏差。
澄清问题7:附件1_ Volume II.1_ Standard Specification Part 1[NGCP],
回复:TDS要求优先。
澄清问题8:附件2 - LWEC Power Capacitor,
1. 成套按照前期澄清单套35Mvar来设计,则需要更改单元设计,具体见我方参数单
2. 环境温度-25~+55与菲律宾STORM 200MW 风电场项目LWEC138KV升压站电容器技术规范中的极端最高温38度不一致,请确认以哪一个为准.
回复:1、竞标响应时,请提出偏差。
2、TDS要求优先
澄清问题9:附件2 - LWEC Power Capacitor,Bus Insulators
我方电容器组设计为对地全绝缘设计,支架和地面用支柱绝缘子(Bottom Insulator)隔开,支柱绝缘子爬距需满足>1116mm的绝缘要求,但母线绝缘子(Bus Insulators)不需要考虑这么大的爬距要求,只需要满足>810mm即可.
回复:满足竞标文件TDS要求,如无法满足,请提出偏差并详细说明理由
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