Petroleum Refinery Engineering ›› 2025, Vol. 55 ›› Issue (7): 39-43.

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Impact analysis and countermeasures of alkaline water hydrogen production power supply harmonic on enterprise power grid

Qian Zhihong, Li Jun, Zhang Hongyang, Shi Zhentang   

  1. SINOPEC (Dalian) Research Institute of Petroleum and Petrochemicals Co., Ltd., Dalian, Liaoning 116045
  • Online:2025-07-15 Published:2025-07-21

碱水制氢电源谐波对企业电网影响分析及对策

钱志红, 李君, 张洪阳, 时振堂   

  1. 中石化（大连）石油化工研究院有限公司, 辽宁省大连市116045
  • 作者简介:钱志红，高级工程师，硕士，1996年毕业于浙江大学电力系统及其自动化专业，主要研究方向为石化电力系统分析与保护整定。联系电话：0411-39699260，E-mail：qianzhihong.fshy@sinopec.com。
  • 基金资助:
    国家自然科学基金“双碳”专项重点基金（52241702）

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Abstract:

With the widespread adoption of electrolytic hydrogen production technology in petrochemical enterprises, the impact of hydrogen production power supplies on grid power quality has become increasingly prominent. Analysis of key factors affecting grid harmonic tolerance reveals that the higher the voltage level and the larger the capacity of the enterprise power grid, the smaller the harmonic influence. Taking a typical 12-pulse rectifier system as an example for harmonic source analysis, the results show that after passive filter treatment: the total harmonic distortion (THD) of the rectifier input current decreases from 14.196% to 5.918%, a reduction of 58.31%, meeting the standard requirement of less than 12%; the THD of the substation input current connected to the rectifier drops from 3.886% to 1.514%, a reduction of 61.04%, satisfying the standard requirement of less than 5%; the 11th, 13th, 23rd, and 25th characteristic harmonics on the low-voltage side of transformer 2# decrease from about 70% to below 31% of the standard limit; the THD of bus voltage declines from 2.656% to 1.311%, a reduction of 50.64%, meeting the standard requirement of less than 3%. The analysis results validate the effectiveness of the proposed filtering solution.

Key words: hydrogen production from alkaline water, power supply, harmonics, power grid, filter, rectifier, bus voltage, total harmonic distortion

摘要：

随着碱水制氢技术在石化企业的推广应用，制氢电源对电网电能质量的影响日益凸显。分析影响电网谐波承载能力的关键因素发现：企业电网电压等级越高、容量越大，电网受谐波影响越小。以典型12脉波整流系统为例进行谐波源分析，结果显示，进行无源滤波器治理后：整流器进线电流总谐波畸变率由14.196%降至5.918%，降幅达58.31%，满足低于12%的标准要求；整流器所在变电站进线电流谐波畸变率由3.886%降至1.514%，降幅61.04%，满足低于5%的标准要求；2号变压器低压侧11、13、23、25次特征谐波在标准限值的占比70%左右降至31%以下；母线电压谐波畸变率由2.656%降至1.311%，降幅50.64%，满足低于3%的标准要求。分析结果验证了该滤波方案的有效性。

关键词: 碱水制氢, 电源, 谐波, 电网, 滤波器, 整流器, 母线电压, 谐波畸变率