CN1761115A - Method for intelligent recognizing and removing faults of powre system - Google Patents
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Abstract
本发明涉及一种电源系统故障的智能识别与排除方法，为解决现有技术中无法准确识别是哪一个电源模块发生故障的问题，本发明中，每一个电源模块根据自己在该电源系统中的地址信号确定自身巡检顺序，再根据自身巡检顺序及预设的巡检周期、确定当检测到输出电压异常后启动自身巡检的启动时间；当检测到电源系统的输出电压异常后，针对每一个电源模块，在到达自身巡检时间时，先停止向电源系统输出电压，再检测电源系统的当前输出电压，如果当前输出电压正常则认定是自己发生了故障，此时可通过自身控制电路进行锁死处理，使该电源模块脱离整个电源系统。另外，也可通过先让所有电源模块先停止输出电压，再依次恢复输出电压的方式来找出故障电源模块。
The present invention relates to an intelligent identification and troubleshooting method for power system faults. In order to solve the problem in the prior art that it is impossible to accurately identify which power module is faulty, in the present invention, each power module The address signal determines the self-inspection sequence, and then according to the self-inspection sequence and the preset inspection cycle, determine the start time of self-inspection when the output voltage is detected to be abnormal; when the output voltage of the power system is detected to be abnormal, for Each power module, when it reaches its own inspection time, first stops outputting voltage to the power system, and then detects the current output voltage of the power system. If the current output voltage is normal, it is determined that it has a fault. Perform lockout processing to separate the power module from the entire power system. In addition, it is also possible to find out the faulty power supply module by making all the power supply modules stop output voltage first, and then restore the output voltage in sequence.
Description
技术领域technical field
本发明涉及由多个电源模块组成的电源系统，更具体地说，涉及这种电源系统故障的智能识别与排除方法。The invention relates to a power supply system composed of multiple power supply modules, and more specifically, to an intelligent identification and troubleshooting method for the failure of the power supply system.
背景技术Background technique
如图1所示为一个电源系统的原理图，其中由多个电源模块组成该电源系统，每个电源模块通过可控脱离装置(常见的有继电器、MOS管等)实现输出的热插拔等功能，各个电源模块的输出通过右侧的直流母线并联，以向负载供电。Figure 1 is a schematic diagram of a power supply system, in which the power supply system is composed of multiple power modules, and each power module realizes output hot-swapping through a controllable disconnection device (relays, MOS tubes, etc. are common) function, the output of each power module is connected in parallel through the DC bus on the right to supply power to the load.
对于这种电源系统，当其中一个电源模块由于损坏而产生内部短路时，无论该短路是发生于继电器的前面还是后面，由于所述电源模块是相互并联的，所以，对于所有电源模块来说，其输出都是会处于短路状态，此时将无法分辨出是哪一个电源模块发生了故障，而会视为整个电源系统发生了短路故障，其结果是造成整个电源系统停止工作。同样，如果其中一个电源模块发生了输出过压故障，由于所有电源模块的输出都并联在系统的直流母线上，所以会造成所有的电源模块都检测到输出电压超标，现有的输出过压保护方法会将所有电源模块锁死，其结果也是造成整个电源系统停止工作。For this kind of power supply system, when one of the power supply modules has an internal short circuit due to damage, no matter whether the short circuit occurs in front of or behind the relay, since the power supply modules are connected in parallel with each other, for all power supply modules, Its output will be in a short-circuit state. At this time, it will not be possible to tell which power module is faulty, but it will be regarded as a short-circuit fault in the entire power system. As a result, the entire power system will stop working. Similarly, if one of the power modules has an output overvoltage fault, since the outputs of all power modules are connected in parallel to the DC bus of the system, all power modules will detect that the output voltage exceeds the standard, and the existing output overvoltage protection This method will lock all the power modules, and as a result, the entire power system will stop working.
发明内容Contents of the invention
针对现有技术的上述缺陷，本发明要解决现有的电源系统故障保护方法无法准确识别是哪一个电源模块发生故障，从而会导致整个电源系统停止工作的问题，以实现更准确、可靠的电源系统故障的智能识别与排除。In view of the above defects of the prior art, the present invention solves the problem that the existing power system fault protection method cannot accurately identify which power module is faulty, which will cause the entire power system to stop working, so as to achieve a more accurate and reliable power supply Intelligent identification and elimination of system faults.
本发明解决其技术问题所采用的技术方案是：提供一种电源系统故障的智能识别与排除方法，所述电源系统中包括多个相互并联的电源模块，其特征在于，每一个电源模块根据自己在该电源系统中的地址信号确定自身巡检顺序，再根据自身巡检顺序及预设的巡检周期、确定当检测到输出电压异常后启动自身巡检的启动时间；The technical solution adopted by the present invention to solve the technical problem is to provide an intelligent identification and troubleshooting method for power system faults. The power system includes a plurality of power modules connected in parallel. The address signal in the power supply system determines the self-inspection sequence, and then determines the start time of the self-inspection inspection after detecting an abnormal output voltage according to the self-inspection sequence and the preset inspection cycle;
当检测到电源系统的输出电压异常后，针对每一个电源模块，按以下步骤进行处理：When the output voltage of the power system is detected to be abnormal, handle each power module according to the following steps:
(S11)在到达自身巡检时间时，停止向所述电源系统输出电压；(S11) Stop outputting voltage to the power supply system when the self-inspection time is reached;
(S12)检测所述电源系统的当前输出电压；(S12) Detecting the current output voltage of the power system;
(S13)判断所述电源系统的当前输出电压是否正常，如正常则认定是自己发生了故障。(S13) Judging whether the current output voltage of the power supply system is normal, if it is normal, it is determined that a fault has occurred.
在上述方法的步骤(S11)中，所述电源模块通过关闭其内部的功率变换电路、和/或断开其输出端可控脱离装置的方式以停止向所述电源系统输出电压；所述可控脱离装置是继电器或可控开关管。In the step (S11) of the above method, the power module stops outputting voltage to the power system by closing its internal power conversion circuit and/or disconnecting its output end controllable disconnection device; The control disengagement device is a relay or a controllable switch tube.
在上述方法的步骤(S13)中，在所述步骤(S13)中，如果所述电源模块认定是自己发生了故障，则通过自身控制电路进行锁死处理，同时上报故障情况。In the step (S13) of the above method, in the step (S13), if the power supply module determines that it has failed, it will perform locking processing through its own control circuit and report the failure situation at the same time.
在上述方法的步骤(S13)中，如果所述电源系统的当前输出电压不正常，则所述电源模块认定不是自己发生了故障。此时，所述电源模块最好等待所有的电源模块都完成自身巡检之后再恢复正常工作并重新向所述电源系统输出电压。In the step (S13) of the above method, if the current output voltage of the power system is not normal, the power module determines that it is not a failure of itself. At this time, the power supply module preferably waits for all the power supply modules to complete their self-inspection before returning to normal operation and outputting voltage to the power supply system again.
在本发明的上述方法中，所述认定不是自己发生了故障的电源模块继续检测所述电源系统的输出电压，如果在巡检最后一个电源模块时所述电源系统的输出电压仍然不正常，则认定是发生了电源系统之外的故障并上报故障情况。也可以不直接认定，而是在最后一个电源模块巡检完之后重新向所述电源系统输出电压，然后执行所述步骤(S11)至(S13)，如此重复至少一次之后，如果电源系统的输出电压仍然不正常，才认定是发生了电源系统之外的故障并上报故障情况。In the above-mentioned method of the present invention, the power module that is determined not to have failed continues to detect the output voltage of the power system, if the output voltage of the power system is still abnormal when the last power module is inspected, then It is determined that a fault other than the power system has occurred and the fault is reported. It may also not be determined directly, but output voltage to the power system again after the last power module is inspected, and then perform the steps (S11) to (S13), and after repeating this at least once, if the output of the power system If the voltage is still abnormal, it is determined that a fault outside the power system has occurred and the fault is reported.
本发明的另一种方案中，当检测到电源系统的输出电压异常后，针对每一个电源模块，按以下步骤进行处理：In another solution of the present invention, when the output voltage of the power system is detected to be abnormal, each power module is processed according to the following steps:
(S21)先停止向所述电源系统输出电压，在到达自身巡检时间时则恢复正常工作，重新向所述电源系统输出电压；(S21) Stop outputting voltage to the power supply system first, resume normal operation when the self-inspection time is reached, and output voltage to the power supply system again;
(S22)检测所述电源系统的当前输出电压；(S22) Detecting the current output voltage of the power system;
(S23)判断所述电源系统的当前输出电压是否正常，如不正常则认定是自己发生了故障，并再次停止向所述电源系统输出电压。(S23) Judging whether the current output voltage of the power supply system is normal, if it is not normal, it is determined that a fault has occurred, and the output voltage to the power supply system is stopped again.
在本方案的所述步骤(S23)中，如果所述电源模块认定是自己发生了故障，则还通过自身控制电路进行锁死处理，同时上报故障情况。In the step (S23) of this solution, if the power module determines that it has failed, it will also perform locking processing through its own control circuit, and report the failure situation at the same time.
在本方案的所述步骤(S23)中，所述认定自己发生了故障的电源模块继续检测所述电源系统的输出电压，如果在巡检最后一个电源模块时所述电源系统的输出电压仍然不正常，则认定是发生了电源系统之外的故障并上报故障情况。也可以不直接认定，而是在最后一个电源模块巡检完之后重新向所述电源系统输出电压，然后执行所述步骤(S21)至(S23)，如此重复至少一次之后，如果电源系统的输出电压仍然不正常，才认定是发生了电源系统之外的故障并上报故障情况。In the step (S23) of this solution, the power module that has identified itself as having failed continues to detect the output voltage of the power system, if the output voltage of the power system is still not If it is normal, it is determined that a fault outside the power supply system has occurred and the fault is reported. It may also not be determined directly, but output voltage to the power system again after the last power module is inspected, and then perform the steps (S21) to (S23), and after repeating this at least once, if the output of the power system If the voltage is still abnormal, it is determined that a fault outside the power system has occurred and the fault is reported.
在本方案的所述步骤(S23)中，如果所述电源系统的当前输出电压正常，则所述电源模块认定不是自己发生了故障。同样，此时最好等待所有的电源模块都完成自身巡检之后再恢复正常工作并重新向所述电源系统输出电压。In the step (S23) of this solution, if the current output voltage of the power supply system is normal, then the power supply module does not determine that it has failed itself. Similarly, at this time, it is best to wait for all the power modules to complete their self-inspection before returning to normal work and re-outputting voltage to the power system.
由上述方案可知，本发明的方法中，每一个电源模块基于其地址信息确定自身的巡检顺序和发生故障后的巡检启动时间，并通过简单的停止(恢复)输出电压操作，再配合相应的输出电压检测，即可准确地找出真正发生了故障的那一个或多个电源模块，使故障的电源模块脱离整个电源系统，从而使电源系统可自动恢复正常工作。It can be known from the above scheme that in the method of the present invention, each power module determines its own inspection sequence and inspection start time after a failure occurs based on its address information, and simply stops (recovers) the output voltage operation, and then cooperates with the corresponding The output voltage detection can accurately find out the one or more power modules that have actually failed, so that the faulty power module can be separated from the entire power system, so that the power system can automatically resume normal operation.
附图说明Description of drawings
下面将结合附图及实施例对本发明作进一步说明，附图中：The present invention will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:
图1是由多个电源模块并联组成的电源系统的原理图；Figure 1 is a schematic diagram of a power system composed of multiple power modules connected in parallel;
图2是本发明一个优选实施例中进行故障排除的流程图；Fig. 2 is a flowchart of troubleshooting in a preferred embodiment of the present invention;
图3是本发明另一个优选实施例中进行故障排除的流程图。Fig. 3 is a flow chart of troubleshooting in another preferred embodiment of the present invention.
具体实施方式Detailed ways
本发明的一个优选实施中，按图2所示的流程进行故障的智能识别与排除。针对图1所示的由多个电源模块并联组成的电源系统，通过图2所示的流程，可准确有效地找出真正发生了故障的那一个电源模块。In a preferred implementation of the present invention, faults are intelligently identified and eliminated according to the flow shown in FIG. 2 . For the power system shown in Figure 1 which is composed of multiple power modules connected in parallel, through the process shown in Figure 2, it is possible to accurately and effectively find out which power module actually failed.
本实施例中，必须先对每一个电源模块的控制电路进行相应的改进，如果各种故障的综合控制电路通过软件形式来实现，则不需要对控制电路进行任何改进，只需更改软件即可，所述改进的目的是要让该电源模块能根据自己在该电源系统中的地址信号确定自身巡检顺序，再根据自身巡检顺序及预设的巡检周期、确定当检测到输出电压异常后启动自身巡检的启动时间。假设电源系统中有8个电源模块，地址分别是000、001、010、…、110、111，则其巡检顺序是地址为000的排第一、001的排第二，依此类推，地址为111的排最后；当然，也可取中间任一个，例如011排第一，则此时是100排第二，依此类推，111排第五，010则排第八。为便于理解和实施，本实施例中取前一种方式排列巡检顺序。本文中的巡检周期，是指每一个电源模块完成自身巡检所需的时间，包括执行各个步骤所需的实际时间，以及根据具体需要设定的延迟时间。假设巡检周期为1秒，以前述8个电源模块为例，对于地址为000的电源模块，其启动时间为0秒，也就是在检测到输出电压异常后立即执行巡检，并在第0-1秒这一时间段内完成自身巡检；对于地址为100的电源模块，其启动时间为4秒，也就是在检测到输出电压异常后的第4秒才执行巡检，并在第4-5秒这一时间段内完成自身巡检。In this embodiment, the control circuit of each power supply module must be improved accordingly. If the comprehensive control circuit of various faults is realized in the form of software, it is not necessary to make any improvement to the control circuit, only the software needs to be changed. , the purpose of the improvement is to enable the power module to determine its own inspection sequence according to its own address signal in the power system, and then determine when an abnormal output voltage is detected according to its own inspection sequence and preset inspection cycle. The startup time of self-inspection after starting. Assume that there are 8 power modules in the power system, and the addresses are 000, 001, 010, ..., 110, 111, then the inspection sequence is the first with the address of 000, the second with the address of 001, and so on. The one with 111 is the last; of course, any one in the middle is also acceptable, for example, 011 is the first, then 100 is the second at this time, and so on, 111 is the fifth, and 010 is the eighth. For ease of understanding and implementation, the former method is used to arrange the inspection sequence in this embodiment. The inspection cycle in this article refers to the time required for each power module to complete its own inspection, including the actual time required to execute each step, and the delay time set according to specific needs. Assuming that the inspection period is 1 second, taking the above-mentioned 8 power modules as an example, for the power module with address 000, its start-up time is 0 seconds, that is, the inspection is performed immediately after the abnormal output voltage is detected, and at 0 The self-inspection is completed within the time period of -1 second; for the power module with address 100, its start-up time is 4 seconds, that is, the inspection is performed in the 4th second after the abnormal output voltage is detected, and in the 4th The self-inspection is completed within the time period of -5 seconds.
具体实施时，可根据巡检时执行各个步骤所需的实际时间，以及根据具体需要设定的延迟时间，确定一个适当的巡检周期。由前面的说明可知，任一电源模块接入到电源系统中之后，可根据其所插接的位置自动获取一个地址，并根据该地址确定自身巡检顺序和启动时间。During specific implementation, an appropriate inspection cycle can be determined according to the actual time required to execute each step during the inspection and the delay time set according to specific needs. It can be seen from the previous description that after any power module is connected to the power system, it can automatically obtain an address according to its plugged position, and determine its own inspection sequence and startup time according to the address.
关于电源模块是否退出巡检状态的判定，可以用拨码开关等硬件电路现场设定，也可以用软件的形式根据具体应用设定，还可以通过电源模块间建立通讯完成，例如规定任一电源模块完成自身巡检后立即向其他电源模块发出自身巡检完毕信号，若在超出预设的巡检周期时间内没有收到其他电源模块发出的自身巡检完毕信号，则所有电源模块默认电源系统巡检完毕。The determination of whether the power module exits the inspection state can be set on-site with hardware circuits such as dial switches, or can be set in the form of software according to specific applications. It can also be completed by establishing communication between power modules, such as specifying any power supply. After the module completes its own inspection, it immediately sends a self-inspection completion signal to other power modules. If it does not receive the self-inspection completion signal from other power modules within the preset inspection period, all power modules will default to the power system. Inspection completed.
图2所示的是单个电源模块的巡检流程，当检测到电源系统的输出电压异常(可能是输出短路、或者是输出过压)时，每一个电源模块独立地执行本流程，所以本流程的前提是已检测到输出电压异常。Figure 2 shows the inspection process of a single power module. When an abnormal output voltage of the power system is detected (possibly due to output short circuit or output overvoltage), each power module executes this process independently, so this process The premise is that an abnormal output voltage has been detected.
从图2中可以看出，针对每一个电源模块，先看是否到达自身巡检时间，如果未到达则继续等待，如果到达则停止向电源系统输出电压，具体实施时，该电源模块可通过关闭其内部的功率变换电路、或断开其输出端可控脱离装置(图1中是继电器，也可以是可控开关，如MOS管)的方式，以停止向电源系统输出电压，也可以在关闭功率变换电路的同时断开可控脱离装置。It can be seen from Figure 2 that for each power module, first check whether the self-inspection time has arrived, if not, continue to wait, and if it does, stop outputting voltage to the power system. Its internal power conversion circuit, or disconnect its output controllable disengagement device (relay in Figure 1, it can also be a controllable switch, such as a MOS tube) to stop the output voltage to the power system, or it can be turned off The controllable disengagement device is disconnected simultaneously with the power conversion circuit.
然后，则该电源模块的控制电路检测电源系统的当前输出电压，再判断其当前输出电压是否正常，如果是则认定是自己发生了故障，此时，该电源模块应上报自身故障情况，并可通过自身控制电路进行锁死处理，以彻底脱离整个电源系统；由于此时仅是本电源模块停止输出电压，其他电源模块仍在继续输出电压，所以，如果整个电源系统的当前输出电压正常，则可认定其他电源模块都没有故障，据此，该电源模块还可向其他电源模块发出故障已排除并停止本次巡检的信号(未在图中画出这一步骤)；具体实施时，也可以不设置这一步骤，让各个电源模块独立地执行完自己的巡检流程，因为故障电源模块从系统中脱离后，电源系统的输出电压可恢复正常，此时正常电源模块检测到的电源系统的输出电压是正常的，所以可自动退出巡检状态。一般情况下，电源模块对于电源系统的输出电压的检测是实时的；只有当各种故障的综合控制电路以软件形式实现时，对于电源系统的输出电压的检测是以一定时间间隔来采集的，且固定的时间间隔远远小于巡检时间。Then, the control circuit of the power module detects the current output voltage of the power system, and then judges whether the current output voltage is normal. Lock-up processing is carried out through its own control circuit to completely break away from the entire power supply system; since only this power module stops outputting voltage at this time, other power modules continue to output voltage, so if the current output voltage of the entire power supply system is normal, then It can be determined that the other power modules have no faults. Accordingly, the power module can also send a signal to other power modules that the fault has been eliminated and stop this inspection (this step is not shown in the figure); You can skip this step and let each power module complete its own inspection process independently, because after the faulty power module is separated from the system, the output voltage of the power system can return to normal, and the power system detected by the normal power module at this time The output voltage is normal, so it can automatically exit the inspection state. In general, the detection of the output voltage of the power system by the power module is real-time; only when the comprehensive control circuit of various faults is realized in the form of software, the detection of the output voltage of the power system is collected at a certain time interval. And the fixed time interval is far shorter than the inspection time.
如果电源系统的当前输出电压不正常，则该电源模块认定不是自己发生了故障，此时，该电源模块要等待所有电源模块都完成自身巡检之后，再恢复正常工作，重新向所述电源系统输出电压。考虑到通常只有一个电源模块发生故障，且两个或多个电源模块同时损坏的概率非常低这一情况，当该电源模块认定不是自己发生了故障后，可立即恢复正常工作。不过，优选的方式还是等待所有电源模块都完成自身巡检之后，再恢复正常工作。If the current output voltage of the power system is not normal, the power module does not believe that it has failed itself. At this time, the power module will wait for all power modules to complete their own inspections before returning to normal work and re-introducing the power supply system. The output voltage. Considering that usually only one power module fails, and the probability of two or more power modules being damaged at the same time is very low, when the power module is determined not to have failed itself, it can resume normal operation immediately. However, the preferred way is to wait for all the power modules to complete their self-inspection before returning to normal work.
具体实施时，为区分是电源模块故障还是外部故障，认定不是自己发生了故障的电源模块还可继续检测电源系统的输出电压，如果在巡检最后一个电源模块时电源系统的输出电压仍然不正常，则认定是发生了电源系统之外的故障并上报故障情况。也可以不直接认定，而是在最后一个电源模块巡检完之后重新向电源系统输出电压，然后执行图2所示的步骤，如此重复至少一次之后，如果电源系统的输出电压仍然不正常，才认定是发生了电源系统之外的故障并上报故障情况。During the specific implementation, in order to distinguish whether it is a power module failure or an external failure, it is determined that the power module that has not failed itself can continue to detect the output voltage of the power system. If the output voltage of the power system is still abnormal when the last power module is inspected , it is determined that a fault outside the power system has occurred and the fault is reported. It can also not be determined directly, but output voltage to the power system again after the last power module inspection, and then perform the steps shown in Figure 2. After repeating this at least once, if the output voltage of the power system is still abnormal, then It is determined that a fault other than the power system has occurred and the fault is reported.
可见，在完成对所有电源模块的巡检之后，整个电源系统将自动恢复正常工作。It can be seen that after the inspection of all power modules is completed, the entire power system will automatically resume normal operation.
本发明的另一个优选实施中，按图3所示的流程进行故障的智能识别与排除。从图3中可以看出，针对每一个电源模块，当检测到电源系统的输出电压异常后，首先停止向所述电源系统输出电压，也就是说，所有的电源模块都会停止向所述电源系统输出电压。针对一个具体的电源模块，在到达自身巡检时间时，它才恢复正常工作并重新向所述电源系统输出电压，也就是说，各个电源模块是逐个逐个地恢复向所述电源系统输出电压的。In another preferred implementation of the present invention, faults are intelligently identified and eliminated according to the flow shown in FIG. 3 . As can be seen from Figure 3, for each power module, when the output voltage of the power system is detected to be abnormal, it first stops outputting voltage to the power system, that is to say, all power modules will stop supplying voltage to the power system. The output voltage. For a specific power module, it resumes normal operation and outputs voltage to the power system again when it reaches its own inspection time, that is to say, each power module resumes output voltage to the power system one by one .
然后，检测电源系统的当前输出电压，再判断当前输出电压是否正常，如不正常则认定是自己发生了故障，此时，该电源模块应上报故障情况，并可通过自身控制电路进行锁死处理，以彻底脱离整个电源系统。具体实施时，也可选择另一种处理方式，对于认定自己发生了故障的电源模块，并不立即上报故障或进行锁死处理，而是继续检测电源系统的输出电压，如果在巡检最后一个电源模块时电源系统的输出电压仍然不正常，也就是所有的电源模块都认定自己发生了故障，实际这几乎是不可能的，所以此时应认定是发生了电源系统之外的故障(例如负载方面的故障)并上报故障情况。进一步方案中，也可以不直接认定是外部故障，而是在最后一个电源模块巡检完之后重新向电源系统输出电压，然后执行前述巡检步骤，如此重复至少1-3次之后，如果电源系统的输出电压仍然不正常，才认定是发生了电源系统之外的故障并上报故障情况。Then, detect the current output voltage of the power supply system, and then judge whether the current output voltage is normal. If it is not normal, it is determined that a fault has occurred. At this time, the power module should report the fault situation and lock it through its own control circuit. , to completely break away from the entire power system. In the specific implementation, another processing method can also be selected. For the power module that is determined to have a fault, it does not immediately report the fault or perform lockout processing, but continues to detect the output voltage of the power system. When the power supply module is installed, the output voltage of the power system is still abnormal, that is, all the power modules believe that they have failed. In practice, this is almost impossible, so at this time it should be determined that a failure outside the power system (such as load failure) and report the failure situation. In a further solution, it is also possible not to directly identify an external fault, but to re-output the voltage to the power system after the last power module inspection, and then perform the aforementioned inspection steps. After repeating this for at least 1-3 times, if the power system If the output voltage of the power supply is still abnormal, it is determined that a fault outside the power supply system has occurred and the fault is reported.
如果所述电源系统的当前输出电压正常，则该电源模块认定不是自己发生了故障，此时该电源模块最好等待所有电源模块都完成自身巡检之后，再恢复正常工作并重新向所述电源系统输出电压。因当前输出电压已正常，所以在具体实施时，对于认定不是自己发生了故障的电源模块，也可立即恢复正常工作。If the current output voltage of the power supply system is normal, then the power module does not believe that it has failed itself. At this time, the power module had better wait for all the power modules to complete their own inspections before returning to normal work and reconnecting to the power supply. system output voltage. Because the current output voltage is normal, the normal operation can be resumed immediately for the power module that is determined not to have failed itself during actual implementation.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102263645A (en) * | 2011-07-04 | 2011-11-30 | 迈普通信技术股份有限公司 | Power management method and power management system for communication equipment |
| CN102621502A (en) * | 2012-03-29 | 2012-08-01 | 首都师范大学 | Fault monitoring and forecasting method of direct current (DC)-direct current (DC) power source system |
| WO2017148238A1 (en) * | 2016-02-29 | 2017-09-08 | 中兴通讯股份有限公司 | Output over-voltage protection method and device for power source parallelized system, and storage medium |
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| CN108431836A (en) * | 2015-12-31 | 2018-08-21 | 微软技术许可有限责任公司 | Infrastructure management system for hardware fault reparation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3374361B2 (en) * | 1997-04-04 | 2003-02-04 | 矢崎総業株式会社 | Vehicle abnormal current detecting method, vehicle abnormal current detecting device, and vehicle power supply device |
| JP3684866B2 (en) * | 1998-10-16 | 2005-08-17 | 株式会社日立製作所 | Conduction / shut-off control device |
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| CN107290604A (en) * | 2016-04-13 | 2017-10-24 | 新巨企业股份有限公司 | Method for confirming damage of redundant power supply system |
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| CN110567485A (en) * | 2019-08-14 | 2019-12-13 | 北京控制工程研究所 | A multi-probe star sensor on-orbit autonomous fault diagnosis and repair method |
| CN110567485B (en) * | 2019-08-14 | 2021-04-13 | 北京控制工程研究所 | On-orbit autonomous fault diagnosis and repair method for multi-probe star sensor |
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