同步发电机中不可直接测量量的左逆软测量方法

ZHANG Kaifeng; DAI Xianzhong; MA Chao; ZHANG Ga

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同步发电机中不可直接测量量的左逆软测量方法

更新时间：2025-08-13

- 同步发电机中不可直接测量量的左逆软测量方法
- Automation of Electric Power Systems Vol. 32, Issue 23, Pages: 46-50(2008)
- 作者机构：
  
  东南大学自动化学院复杂工程系统测量与控制教育部重点实验室,江苏省,南京市,210096
- 作者简介：
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- Published：2008
- 稿件说明：
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ZHANG Kaifeng, DAI Xianzhong, MA Chao, et al. [J]. Automation of electric power systems, 2008, 32(23): 46-50.
DOI：

ZHANG Kaifeng, DAI Xianzhong, MA Chao, et al. [J]. Automation of electric power systems, 2008, 32(23): 46-50. DOI：

摘要

研究了同步发电机中一些不可直接测量量（功角、 dq轴暂态电势、dq轴电流分量等）的动态软测量问题。首先，建立了适合于软测量分析的同步发电机模型，该模型充分包含了同步发电机中的一些可直接测量量（如有功功率、无功功率、电流幅值等），且是一类特殊的非线性微分 — 代数子系统。接着，针对所建立模型的特殊性，给出了适合此模型的推广的左逆软测量算法。然后，具体针对同步发电机的4阶实用模型设计了软仪表，实现了模型中所有不可直接测量量的软测量。最后，基于MATLAB/SimPowerSystems软件进行了数值仿真，用6阶次暂态模型模拟真实的同步发电机，验证了所提出的方法的有效性。

Abstract

The problem of soft-sensing of directly immeasurable variables in the synchronous generator， such as the power angle， the d and q axis transient electromotive forces， the d and q axis stator circuit currents， is investigated. Firstly， the model of synchronous generator suitable for soft-sensing is proposed， which includes the directly measurable variables of generator， such as the active and reactive powers， the amplitude of current， etc. The proposed model is a type of nonlinear differential-algebraic sub-systems. Secondly， aiming at the specialty of the proposed model， an expanded left-inversion soft-sensing algorithm is proposed for the soft-sensing of synchronous generator. Then， a left-inversion soft-sensor is designed considering the 4-order transient practical model of synchronous generator， and all directly immeasurable variables in the model can be soft-sensed. Finally， simulations are performed using MATLAB/ SimPowerSystems， in which a 6-order sub-transient practical model of generator is used， and the results demonstrate the validity of the proposed method.

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