配网开关自动化功能技术方案

配网开关自动化功能技术方案

馈线故障管理功能

针对两种馈线：

1．具有以“电压-时间”作为故障判据的当地自动化控制功能的馈线；2．以提供“电流”为故障判据的馈线。

1. The Solution of Distribution Network Voltage Type Switches

电压型配网开关自动化技术方案

1.1 Equipment description 开关设备描述

Pole mounted vacuum switches (PMS) with local automation and voltage sensors are widely used in Guiyang Power (GP) for local fault isolation and restoration. Its type: VSP5, rated voltage 12 kV, rated current 630 A, 50 Hz, rated short-time withstand current 12,5 kA and rated making current 40 kA. Voltage transformers are installed on both sides, in one phase.

在贵阳供电局广泛使用的柱上真空开关(PMS),每个开关具备以电压为故障判据的当地自动化功能，可以在当地进行故障定位，故障隔离和恢复供电等功能，该设备的型号为VSP5, 额定电压为12KV，额定电流为630A, 50Hz, 故障瞬间电流12.5KV, 额定 KA。该开关的电压传感器安装在开关的两侧，单相。

Normally, there are 5 PMS switches on 2 connected 10 kV feeders, where 2 PMS switches are normally closed on both sides and one is normally open, as presented on the Figure 1.

在一般情况下，在两条10KV的馈线上，配有5个PMS开关，其中两个PMS开关为常闭，在线路的两侧，另一个为常开，如下图所示：

Figure 1 – PMS switches automation logic

图1- PMS开关当地控制逻辑

1.2 Local automation logic: 当地自动控制功能

1.In case of Fault on section “b”, CB will trip out, PMS 1 and PMS 2 will lose voltage on VT

and automatically Open.

当b段线路发生故障时，变电站内的出线开关将跳开，同时，PMS开关1和2将失去

电压并且打开；

2.After 5 sec: CB will automatically close. PMS1 will receive voltage, wait 7 sec (X time) and

then Close.

5秒之后，变电站内的出线开关将自动闭合，PMS开关1将收到电压，它等7秒（X 时间）后自动闭合；

3.PMS1: in the next 5 sec (white time), if loose voltage again (if Fault is downstream then CB

will trip again and PMS 1 will lose voltage again), he will automatically Open again and

Lock；

PMS开关1：接下来5秒时间 (white time), 如果再度失压 (如果故障是在下游，断路

器跳开，PMS1将再失压 ), 将自动打开并闭锁。

4.PMS2: in the white time of PMS1, PMS2 will receive “remain” voltage after fault place

(setting between 30 – 80% of rated voltage) and he will Lock in open position.

PMS2: 在PMS1的white time时间内, PMS2 将在故障位置后接收“保持” 电压(设置在

额定电压的30 – 80%) 并将锁定在打开位置。

5.PMS 3: Loose voltage on one side. If receives “remain” voltage on that side inside 45 sec, he

will Lock and stay Open. If does not receive …remain” voltage inside 45 sec, he will

automatically Close.

PMS 3:在一侧失压. 如果在45秒内另一侧接收到“保持” 电压, 它将被锁定并保持在开

的状态.如果在45秒内没收到“保持” 电压，它将被自动闭合。

6.After another 5 sec, CB will close again.

再5秒后, 变电站内的出线开关再次闭合.

7.Section “a” is energized by CB, section “b” is de-energized, and section “c” is energized by

PMS3.

线路段“a” 通过变电站内的出线开关带电, 线段“b” 不带电, 线段“c” 通过PMS3带电。

VSP switches operation is additionally described in Attachment 1.

VSP开关的运行将在本文的附件 1中描述。

1.3 Modelling in DMS

DMS中的模型

DMD in real-time mode

DMD在实时模式下

For feeder lines with VSP5 switches under remote control, SCADA system can acquire:

1.switch status,

2.measurements of voltage and current

对于VSP5的线路，主站SCADA系统可以采集到：

1．各开关的位置信号；

2．各开关线路上的电压和电流值。

In case of fault, switches with local automation will automatically execute programmed procedure on field, as described in 1.2, and DMD will be updated automatically from SCADA system. Opening of the Substation breaker will be alarmed by SCADA system, and DMS will record all changes of statuses of switches.