Ship power risk assessment system based on proportional pseudo time-series algorithm
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摘要:
目的 为了提高舰船电力系统的安全性与稳定性，提出基于比例伪时序算法的风险评估系统。 方法 在舰船电力系统中引入改进的伪时序算法，对电压、功率和频率等电力模拟量进行赋值，并通过组态界面进行可视化监控，进而对舰船电力系统进行整体风险评估。同时，针对不同工况下的系统拓扑结构变化问题，通过引入比例补偿系数来调整算法，从而提高风险等级评估的精确度。 结果 实机测试结果表明，该系统不仅可以实时监控电力物理量，还可以准确评估系统的风险状态和风险水平。 结论 研究成果可为舰船电力风险评估系统设计提供参考。 Abstract:Objectives In order to improve the safety and stability of a ship's power system, a risk assessment system based on a proportional pseudo time-series algorithm is proposed. Methods An improved pseudo time-series algorithm is introduced into the ship's power system to assign values to power analog quantities such as voltage, power and frequency, which can be visually monitored through the configuration interface; the risk assessment of the overall power system is then conducted. At the same time, in response to changes in system topology under different working conditions, the algorithm is adjusted by introducing proportional compensation coefficients to improve the accuracy of risk level assessment. Results The actual test results show that this system can not only monitor the physical quantities of electric power in real time, but also accurately assess the risk status and level of the system. Conclusions The results of this study can provide references for the design of ship electric power risk assessment systems. -
图 12 6台机组中2台故障的实机测试结果
Figure 12. Joint commissioning test result for two faults of six units
图 13 6台机组中1台故障的实机测试结果
Figure 13. Joint commissioning test result for one faults of six units
图 14 6台机组中1台故障且部分负载故障的实机测试结果
Figure 14. Joint commissioning test result for one of six units and partial load fault
表 1 伪时序算法的对比分析
Table 1. Comparative analysis of pseudo time-series algorithms
算法名称 特点 传统伪时序算法 反映电力系统状态变化的时序特点，筛选出某一状态变化过程的状态量，根据所需要的状态量建立集合 改进伪时序算法 在伪时序算法的基础上，优化了状态选取过程，忽略了低重要度的状态变化，从而提高算法效率 
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表 2 比例补偿系数
Table 2. Proportional compensation coefficient
参数补偿系数 6台电机 5台电机 4台电机 3台电机 2台电机 1台电机 电压/V 1 0.117 6 0.17 0.081 0.013 7 0.064 0 功率/kW 1 0.15 0.209 0.103 0.031 5 0.110 9 频率/Hz 1 0.225 7 0.365 2 0.213 0.075 9 0.129 8
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