| 消谐阻尼器较适用于全绝缘PT的消谐改造 |
| 添加时间：2019/12/16 15:49:36 浏览次数： |
| 该装置具有消除PT饱和谐振和限制涌流两种功能，但在实际应用中存在以下局限性：⑴中性点为半绝缘结构⑵只能限制本PT不发生谐振，对电网中的其他PT无效（仅一对一有效）;⑶单相接地时，本TV零序电压Uo的测量值有误差,对Uo幅值和角度精度要求较高的场合（如微机接地选线装置）不适宜使用;⑷装置自身的热容量有限，即使选用热容量相对较大的LXQ型，在持续时间较长的间歇电弧接地过电压激发下，装置仍有损坏发生。 The device has two functions of eliminating Pt saturation resonance and limiting inrush current, but it has the following limitations in practical application: (1) the neutral point is semi insulated structure; (2) it can only limit the Pt from resonance, which is invalid for other Pt in the power grid (only one-to-one); (3) when the single-phase is grounded, there is error in the measurement value of zero sequence voltage uo of the TV, which requires higher amplitude and angle accuracy of UO (such as (4) the thermal capacity of the device itself is limited, even if the lxq type with relatively large thermal capacity is selected, the device will still be damaged under the excitation of intermittent arc grounding overvoltage with longer duration. 消谐阻尼器较适用于全绝缘PT的消谐改造。 The damper is more suitable for the improvement of fully insulated Pt. |
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