公开(公告)号：US5424627A

公开(公告)日：1995-06-13

申请号：US48132

申请日：1993-04-13

申请人： Kara Clark ,  Einar V. Larsen ,  Carl A. Wegner ,  Richard J. Piwko

发明人： Kara Clark ,  Einar V. Larsen ,  Carl A. Wegner ,  Richard J. Piwko

IPC分类号： H02H9/04 ,  H02J3/18 ,  H02J3/24 ,  G05F1/00

CPC分类号： H02J3/1807 ,  H02J3/24 ,  Y02E40/14

摘要： A modular thyristor controlled series capacitor (TCSC) system, including a method and apparatus, uses phase controlled firing based on monitored capacitor voltage and line current. For vernier operation, the TCSC system predicts an upcoming firing angle for switching a thyristor controlled commutating circuit to bypass line current around a series capacitor. Each bypass current pulse changes the capacitor voltage proportionally to the integrated value of the current pulse. The TCSC system promptly responds to an offset command from a higher-level controller to control bypass thyristor duty to minimize thyristor damage, and to prevent capacitor voltage drift during line current disturbances. In a multi-module TCSC system, the higher level controller accommodates competing objectives of various system demands, including minimizing losses in scheduling control, stabilizing transients, damping subsynchronous resonance (SSR) oscillations, damping direct current (DC) offset, and damping power-swings.

摘要翻译： 一种模块化晶闸管控制串联电容（TCSC）系统，包括一种方法和装置，使用基于受监控电容电压和线电流的相控点火。 对于游标操作，TCSC系统预测了即将到来的触发角，用于切换晶闸管控制的换向电路以绕过串联电容器的旁路线路电流。 每个旁路电流脉冲将电容电压与电流脉冲的积分值成正比。 TCSC系统迅速响应来自上级控制器的偏移命令，以控制旁路晶闸管负载，以最大限度地减小晶闸管损坏，并防止线路电流扰动期间的电容电压漂移。 在多模块TCSC系统中，较高级别的控制器适应各种系统需求的竞争目标，包括最小化调度控制中的损耗，稳定瞬变，阻尼次同步谐振（SSR）振荡，阻尼直流（DC）偏移和阻尼功率 - 波动

公开(公告)号：US5621305A

公开(公告)日：1997-04-15

申请号：US82408

申请日：1993-06-23

申请人： Kara Clark ,  Einar V. Larsen ,  Carl A. Wegner ,  Richard J. Piwko ,  J. Kenneth Hooker

发明人： Kara Clark ,  Einar V. Larsen ,  Carl A. Wegner ,  Richard J. Piwko ,  J. Kenneth Hooker

IPC分类号： G05F1/70 ,  H02J3/18 ,  H02J3/24 ,  G05F1/00

CPC分类号： G05F1/70 ,  H02J3/1807 ,  H02J3/24 ,  Y02E40/14 ,  Y02E40/30

摘要： An overload management system is provided, including a method and an apparatus, for controlling the operation of electrical equipment in a short-term overload region above the equipment's continuous capability operation curve, without suffering significant loss of equipment life. This overload management system is particularly beneficial for use with equipment having load management capability, such as a modular thyristor controlled series capacitor (TCSC) system using phase controlled firing based on monitored capacitor voltage and line current. For vernier operation, the system predicts an upcoming firing angle for switching a switching device to govern the current received by the electrical device, such as to bypass line current around a series capacitor of the TCSC system. The overload management system may serve as one of several higher-level controllers providing input to a vernier controller for accommodating competing objectives of various system demands.

摘要翻译： 提供了一种过载管理系统，包括一种方法和装置，用于控制设备连续能力运行曲线以上短期超载区域的电气设备的运行，而不会严重损失设备寿命。 这种过载管理系统对于具有负载管理能力的设备尤其有利，例如使用基于受监控的电容器电压和线路电流的相控点火的模块化晶闸管控制串联电容器（TCSC）系统。 对于游标操作，系统预测即将到来的触发角度，用于切换开关装置以控制由电气装置接收的电流，例如绕过TCSC系统的串联电容器周围的线路电流。 过载管理系统可以用作提供输入到游标控制器的几个更高级别的控制器之一，以适应各种系统需求的竞争目标。