CN-122017559-A - Ship generator load test system and method

CN122017559ACN 122017559 ACN122017559 ACN 122017559ACN-122017559-A

Abstract

The invention provides a ship generator load test system, which relates to the technical field of ship generators and comprises an intelligent load module, a data acquisition and monitoring module, a control and analysis module and a safety protection module, wherein the intelligent load module comprises a plurality of independently controllable electronic load units, the data acquisition and monitoring module is connected with the output end of the ship generator, the control and analysis module is respectively in communication connection with the intelligent load module and the data acquisition and monitoring module, the safety protection module and the data acquisition and monitoring module are both connected with an output loop of the ship generator, and the ship generator load test method comprises the following steps of preparation before test, no-load test, dynamic test and test ending. The ship generator load test system and method have the advantages of high efficiency, accuracy, comprehensiveness, intellectualization and safety and reliability.

Inventors

CHEN GANG
FENG CHENGPU
TIAN YUAN

Assignees

江苏兴业船艇有限公司

Dates

Publication Date: 20260512
Application Date: 20260312

Claims (10)

1. The ship generator load test system is characterized by comprising an intelligent load module, a data acquisition and monitoring module, a control and analysis module and a safety protection module, wherein the intelligent load module comprises a plurality of independently controllable electronic load units and is used for simulating at least one of resistive load, inductive load and capacitive load, the data acquisition and monitoring module is connected with the output end of a ship generator and is used for acquiring operation parameters of the ship generator in real time, the control and analysis module is respectively in communication connection with the intelligent load module and the data acquisition and monitoring module and is used for sending control instructions to the intelligent load module to simulate preset load working conditions and receiving and analyzing the operation parameters to evaluate the performance of the generator, and the safety protection module and the data acquisition and monitoring module are connected with an output loop of the ship generator and are used for performing at least one of overvoltage, overcurrent and overheat protection according to the operation parameters.
2. The ship generator load test system of claim 1, wherein the electronic load unit comprises a power switch device, a control circuit and a heat dissipation device, the control circuit adjusts the power switch device according to instructions of the control and analysis module to change the size and characteristics of the load, and the heat dissipation device is used for dissipating heat of the electronic load unit in the working process.
3. The marine vessel generator load test system of claim 1, wherein the data acquisition and monitoring module comprises at least one of a voltage sensor for acquiring voltage, a current sensor for acquiring current, a frequency sensor for acquiring frequency, and a temperature sensor for acquiring temperature, and further comprises a data acquisition card for transmitting and storing acquired data.
4. The ship generator load test system of claim 1, wherein the control and analysis module comprises a processor, and wherein the processor is provided with control software and analysis software, the control software is used for executing a preset test flow, and the analysis software is used for processing the operation parameters, drawing an output characteristic curve and calculating a performance index.
5. A load test system for a marine generator according to claim 3, wherein the safety protection module comprises a protection circuit connected to the voltage sensor, the current sensor and the temperature sensor, and wherein the protection circuit cuts off the electrical connection between the marine generator and the intelligent load module when the detected value exceeds a set threshold.
6. The ship generator load test system of claim 1, wherein the intelligent load module, the data acquisition and monitoring module, the control and analysis module and the safety protection module are all communicatively connected via a field bus or an industrial ethernet.
7. A ship generator load test method for use in a ship generator load test system according to any one of claims 1-6, said method comprising the steps of: s1, preparing before test, namely comprehensively checking each module of a ship generator and a load test system, ensuring normal functions, and setting test parameters; s2, an idle test, namely starting a ship generator and enabling the ship generator to run idle, and collecting and recording idle running parameters by a data collecting and monitoring module; S3, load test, namely controlling the intelligent load module to apply static load to the ship generator, and the data acquisition and monitoring module to acquire and record the operation parameters of the ship generator under different load states, wherein the control and analysis module processes and analyzes the operation parameters; S4, a dynamic test, namely controlling the intelligent load module to apply a dynamic load to the ship generator, and the data acquisition and monitoring module to acquire and record dynamic response parameters of the ship generator, and the control and analysis module to process and analyze the dynamic response parameters; And S5, controlling the intelligent load module to gradually unload the ship generator to an idle load, stopping the ship generator, closing the load test system, finishing test data and generating a report.
8. The method of claim 7, wherein the step of S3 and S4, the parameter analysis of the control and analysis module includes calculating at least one performance index of output power, efficiency, voltage regulation and frequency regulation of the ship generator.
9. The method of claim 7, wherein in step S4, the dynamically changing load comprises at least one of a step load, a ramp load, or a sine wave load.
10. The method according to claim 7, wherein during the test, the control and analysis module performs fault diagnosis according to the operation parameters collected in real time, and when abnormality is detected, an alarm is given or a safety protection module is triggered.

Description

Ship generator load test system and method Technical Field The invention relates to the technical field of ship generators, in particular to a ship generator load test system and a ship generator load test method. Background The ship generator is a heart of a ship electric power system, and the power supply quality and the reliability of the ship electric power system are directly related to the normal operation of all electric equipment such as a propulsion system, a navigation system, life guarantee and the like, so that the overall safety and the economical efficiency of a ship are further affected. Therefore, when the ship is built, overhauled or regularly maintained, strict load tests are required to be carried out on the ship generator so as to verify whether key performance indexes such as output power, voltage and frequency stability, voltage regulation characteristics, dynamic response and the like meet design and specification requirements. The traditional ship generator load test mainly adopts energy-consumption load boxes such as water resistance, cast iron resistance and the like. The method has the defects that firstly, the load type of the load test is single, only a pure resistance load can be simulated, the inductive load and the capacitive load existing in the actual operation of the ship power grid cannot be reproduced, the test working condition is disjointed from the actual condition, and the evaluation is incomplete. And secondly, the load adjustment depends on manual resistance sheet switching or water resistance polar plate adjustment, so that the operation is complex, time and labor are wasted, the precision is poor, continuous and smooth load change is difficult to realize, and accurate step or dynamic characteristic test cannot be performed. Again, data collection usually relies on portable meters, recorded by manual readings, is inefficient and error-prone, is difficult to synchronously capture instantaneous parameters, and the data analysis means is primitive and cannot automatically generate characteristic curves and reports. Finally, traditional load equipment is heavy, large in size, poor in safety and lack of a perfect automatic protection mechanism. With the development of large-scale and intelligent ships, the power system is increasingly complex, and the performance requirements on the generator are also becoming severe. The traditional test method has difficulty in meeting the requirements of high efficiency, accuracy and comprehensiveness. Therefore, there is an urgent need for a modern ship generator load test system and method that can simulate complex loads, automatically control, accurately measure, intelligently analyze, and be safe and reliable. Disclosure of Invention The invention aims to solve the defects in the prior art, and provides a ship generator load test system and a ship generator load test method. In order to achieve the above purpose, the invention adopts the following technical scheme: The ship generator load test system comprises an intelligent load module, a data acquisition and monitoring module, a control and analysis module and a safety protection module, wherein the intelligent load module comprises a plurality of independently controllable electronic load units and is used for simulating at least one of a resistive load, an inductive load and a capacitive load, the data acquisition and monitoring module is connected with the output end of a ship generator and is used for acquiring operation parameters of the ship generator in real time, the control and analysis module is respectively in communication connection with the intelligent load module and the data acquisition and monitoring module and is used for sending control instructions to the intelligent load module to simulate preset load working conditions and receiving and analyzing the operation parameters to evaluate the performance of the generator, and the safety protection module and the data acquisition and monitoring module are connected with an output loop of the ship generator and are used for performing at least one of overvoltage, overcurrent and overheat protection according to the operation parameters. Preferably, the electronic load unit comprises a power switch device, a control circuit and a heat dissipation device, wherein the control circuit adjusts the power switch device according to the instruction of the control and analysis module so as to change the size and the characteristics of the load, and the heat dissipation device is used for dissipating heat of the electronic load unit in the working process. Still preferably, the data acquisition and monitoring module comprises at least one of a voltage sensor for acquiring voltage, a current sensor for acquiring current, a frequency sensor for acquiring frequency and a temperature sensor for acquiring temperature, and further comprises a data acquisition card for transmitting and storing acquired data. Still preferably, the