Reactive Power Measurement with Quasi-synchronous Discrete Hilbert Transform

Wang Bolin  Liu Hua

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

Reactive Power Measurement with Quasi-synchronous Discrete Hilbert Transform

更新时间：2025-11-18

- Reactive Power Measurement with Quasi-synchronous Discrete Hilbert Transform
- Issue 3, Pages: 57-59(2004)
- 作者机构：
  
  1. 河海大学电气工程学院
  2. 河海大学电气工程学院江苏210098
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM933
- Published：2004
- 稿件说明：
移动端阅览
[1]王柏林,刘华.用准同步离散Hilbert变换测量无功[J].四川电力技术,2004(03):57-59.

Wang Bolin Liu Hua. Reactive Power Measurement with Quasi-synchronous Discrete Hilbert Transform[J]. 2004, (3): 57-59.
[1]王柏林,刘华.用准同步离散Hilbert变换测量无功[J].四川电力技术,2004(03):57-59. DOI：

Wang Bolin Liu Hua. Reactive Power Measurement with Quasi-synchronous Discrete Hilbert Transform[J]. 2004, (3): 57-59. DOI：

摘要

由电路理论知Q =1T ∫2π0 u（x - π2 ）i（x）dx。u（x - π2 ）即为电压信号移相 - 90°

而Hilbert变换正好满足此要求。为便于计算机计算采用离散Hilbert变换。由采样误差或者电网频率发生漂移导致的测量误差可以采用准同步方法提高精度。采用准同步离散Hilbert变换可以获得较高的无功测量精度

Abstract

According to the circuit theory

Q=1T∫

2π

u（x-π2）i（x）dx.u（x-π2）is the voltage signal with a -90° phase shift

which the Hilbert transform can meet with. In favor of the computing on computer

the discrete Hilbert transform has been used. The measuring error

which is caused by the sampling error or electrical-net frequency drift error

can be overcomed

to a certain extent

by the measurment techniques with quasi-synchronization. The measuring accuracy of reactive power can be highly acquired with quasi-synchronization discrete Hilbert transform.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Discussion on Low-voltage Centralized Compensation for Customer Reactive Power

Related Author

Li Jun Zheng Qingyu

郑清予

Related Institution

德阳电业局城区供电局

德阳电业局城区供电局四川德阳618000

AI问答

⁰