HD22010-3 变电站电力电源中的设备 变电站电力电源中

【产品详情】

用于35kV到330kV的变电站电力电源中的设备

HD22010-3系列充电模块是电力电源最主要的配置模块，广泛应用于35kV到330kV的变电站电力电源中。

HD22010-3系列充电模块采用自冷和风冷相结合的散热方式，在轻载时自冷运行，符合电力系统的实际运行情况。

以HD22010-3模块的工作原理框图如下图所示。

图一-1 HD22010-3充电模块原理图

HD22010-3充电模块由三相无源PFC和DC/DC两个功率部分组成。在两功率部分之外还有辅助电源以及输入输出检测保护电路。

前级三相无源PFC电路由输入EMI和三相无源PFC组成，用以实现交流输入的整流滤波和输入电流的校正，使输入电路的功率因素大于0.94，以满足DL/T781-2001中三相谐波标准和GB/T 17794.2.2-2003中相关EMI、EMC标准。

后级的DC/DC变换器由PWM发生器控制前级PFC输出的DC电压、经过高频变压器输出后再整流滤波输出DC电压等电路组成，用以实现将前级整流电压转换成电力操作系统要求的稳定的直流电压输出。

辅助电源在输入三相无源PFC之后，DC/DC变换器之前，利用三相无源PFC的直流输出，产生控制电路所需的各路电源。

输入检测电路实现输入过欠压、缺相等检测。DC/DC的检测保护电路包括输出电压电流的检测，散热器温度的检测等，所有这些信号用以DC/DC的控制和保护。

HD22010-3 变电站电力电源中的设备 变电站电力电源中

【英文介绍】

Equipment used in the power supply of substations from 35kV to 330kV

HD22010-3 series charging module is the most important configuration module of power supply, widely used in 35kV to 330kV substation power supply.

HD22010-3 series charging module adopts a combination of self-cooling and air cooling, self-cooling operation in light load, in line with the actual operation of the power system.

The working principle block diagram of the HD22010-3 module is shown in the following figure.

Figure 1-1 Schematic diagram of the HD22010-3 charging module

The HD22010-3 charging module consists of two power parts: three-phase passive PFC and DC/DC. In addition to the two power parts, there is an auxiliary power supply and input and output detection protection circuit.

The preceding three-phase passive PFC circuit is composed of input EMI and three-phase passive PFC to realize AC input rectification and filtering and input current correction, so that the power factor of the input circuit is greater than 0.94. To meet the DL/T781-2001 three-phase harmonics standard and GB/T 17794.2.2-2003 related EMI, EMC standards.

The DC/DC converter of the rear stage is composed of PWM generator to control the DC voltage output by the PFC of the front stage, and then rectifier and filter the output DC voltage after output by the high-frequency transformer, so as to realize the conversion of the rectifier voltage of the front stage into the stable DC voltage output required by the power operating system.

After the input of the three-phase passive PFC and before the DC/DC converter, the auxiliary power supply uses the DC output of the three-phase passive PFC to generate the various power supplies required by the control circuit.

The input detection circuit realizes the detection of input over and under voltage and lack of equality. DC/DC detection protection circuit includes output voltage and current detection, heat sink temperature detection, etc. All these signals are used for DC/DC control and protection.

HD22010-3 变电站电力电源中的设备 变电站电力电源中

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