柴油发电机组假负载如何检测 How to detect false loads in diesel generator sets

柴油发电机组做为停电后的应急备用电源，大部分的时间都是处于待机状态的，一旦停电或者市电故障发生，备用的柴油发电机组就起到了至关重要的作用。然而，经常在供电故障发生后我们才发现柴油发电机组的性能出现了问题，这说明很多用户对柴油发电机组检测维护用交流假负载的知识不够重视。

为了有效避免事故的发生，加强日常柴油发电机组的检测和维护，建立完善的柴油发电机组检测和维护规程，定时规范的对柴油发电机组进行保养，检测和维护就显得格外重要。本文将就电源维护过程中普遍存在的技术难题进行重点介绍。

一、为什么要进行柴油发电机组检测维护用交流假负载？

1、检测柴油发电机组

通过检测柴油发电机组维护用交流假负载，可以检测柴油发电机组的不平衡负载能力，保证稳态的电压调整率、稳态的频率调整率、瞬态电压调整频率、电压恢复时间、瞬态频率调整率、频率恢复时间、柴油发电机组持续运行检测。

2、检测UPS

输出电压不平衡度、输出电压稳压精度、过载能力、动态电压瞬变范围、市电电池切换时间、后备时间、旁路逆变切换时间。

二、柴油发电机组检测维护用交流假负载的主要功能

1、查询功能

　 查询柴油发电机组检索异常记录，查询柴油发电机组检测数据。

2、联机通讯

　 检测仪可通过RS232/RS485接口与上位计算机连接。

3、智能控制及数据处理功能

　(1)数据转存：检测结束后，可把采集的数据转存到U盘；

　(2)在线监测被测设备的电气参数；

　(3)数据处理软件功能：数据处理软件与检测仪配套使用。可设置检测参数，对检测仪检测到的各项电气参数、运行状态及异常记录进行分析和处理；智能查询，显示、打印图表。

　(4)通过对检测设备进行参数设置，可实现自动检测。

4、并机功能

同型号产品可以并机，该设备配备RS485数字并机接口，由主机统一控制，记录检测过程。

5、停机保护功能

柴油发电机组检测维护用交流假负载于一般的交流假负载、负载箱的基础上，增加了智能控制系统，可进行缺相、过欠压等保护设定，一旦设备检测出的参数超出所设参数，设备将发出声响报警，并自动停机保护。

As an emergency backup power source after a power outage, diesel generator sets are mostly in standby mode. Once a power outage or mains failure occurs, backup diesel generator sets play a crucial role. However, we often discover performance issues with diesel generator sets only after power supply failures occur, indicating that many users do not attach enough importance to the knowledge of detecting and maintaining AC false loads for diesel generator sets.

In order to effectively avoid accidents, it is particularly important to strengthen the daily inspection and maintenance of diesel generator sets, establish a sound inspection and maintenance procedure for diesel generator sets, and regularly and standardly maintain them. This article will focus on introducing the common technical difficulties in the process of power maintenance.

1、 Why do we need to use AC dummy loads for diesel generator set testing and maintenance?

1. Detecting diesel generator sets

By detecting the AC false load used for maintenance of diesel generator sets, the unbalanced load capacity of diesel generator sets can be detected, ensuring steady-state voltage regulation rate, steady-state frequency regulation rate, transient voltage regulation frequency, voltage recovery time, transient frequency regulation rate, frequency recovery time, and continuous operation detection of diesel generator sets.

2. Detecting UPS

Output voltage imbalance, output voltage stabilization accuracy, overload capacity, dynamic voltage transient range, mains battery switching time, backup time, bypass inverter switching time.

2、 The main function of detecting and maintaining AC false loads for diesel generator sets

1. Query function

Search for abnormal records of diesel generator sets and retrieve detection data of diesel generator sets.

2. Online communication

The detector can be connected to the upper computer through RS232/RS485 interface.

3. Intelligent control and data processing functions

(1) Data transfer: After the detection is completed, the collected data can be transferred to a USB drive;

(2) Online monitoring of electrical parameters of the tested equipment;

(3) Data processing software function: The data processing software is used in conjunction with the detector. Can set detection parameters to analyze and process various electrical parameters, operating status, and abnormal records detected by the detector; Intelligent query, display and print charts.

(4) By setting the parameters of the detection equipment, automatic detection can be achieved.

4. Parallel function

Products of the same model can be connected in parallel, and the device is equipped with an RS485 digital parallel interface, which is controlled by the host and records the detection process.

5. Shutdown protection function

The detection and maintenance of diesel generator sets with AC false loads are based on general AC false loads and load boxes, with the addition of an intelligent control system that can perform protection settings such as phase loss and overvoltage/undervoltage. Once the parameters detected by the equipment exceed the set parameters, the equipment will sound an alarm and automatically shut down for protection.