CN117239941A - New energy lighthouse current detection device, power distribution control system and method - Google Patents
New energy lighthouse current detection device, power distribution control system and method Download PDFInfo
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Abstract
The application belongs to the technical field of new energy power supply monitoring, and discloses a new energy lighthouse current detection device, a power distribution control system and a method, wherein the power distribution control system comprises a current measurement module, a power supply module and a power supply module, wherein the current measurement module is used for detecting a current signal in the running state of a battery power supply loop, and the current signal is a three-phase circuit current wave signal; the circuit integration module is used for processing the fluctuating three-phase circuit current wave to a current state diagram with the same variation amplitude based on the image, and marking the three-phase current respectively; based on the integrated current state diagram, carrying out real-time monitoring and current data analysis, and comparing and analyzing the current data to obtain whether currents of three phases are uniformly distributed; and the depth analysis module is used for carrying out depth analysis on the current state diagram according to the historical current distribution data if the current distribution of the three phases is uneven, acquiring specific fault reasons and sending out early warning instructions based on the fault reasons.
Description
Technical Field
The application relates to the technical field of new energy power supply monitoring, in particular to a new energy lighthouse current detection device, a power distribution control system and a method.
Background
With the rapid development of economy, sea development is deeper and deeper, sea transportation is more and more developed, a lighthouse is required to be designed for indicating ships in some dangerous sea areas, the current islands are generally far away from the land and in severe marine environments, the corresponding positions of the islands are far away, the environment is severe, the islands are inconvenient to ascend and descend, potential safety hazards exist, and the dependence on resident personnel is reduced through an automatic, remote monitoring and standby system, so that the navigation safety is ensured.
The existing lighthouse generally adopts renewable energy sources to provide power for equipment, obtains heavy current on a power distribution loop by detecting small current on a branch power line, such as Chinese patent No. 217787217U, discloses a current detection circuit which is used for detecting current I on the power distribution loop between a battery and a load, reduces current detection cost, but when the line or the equipment is in overload, the uneven distribution of current waveforms is difficult to monitor, a coil current detection method also needs a large amount of sample data for training, the diagnosis effect is not ideal, and the following problems exist:
harmonics, distortions or dyssynchrony of the current waveform may cause power quality problems, affect the stability of the power system, and fail to intuitively identify the root cause of the current waveform problem;
conventional maintenance may require periodic checks or waiting for equipment failure to occur, which may lead to increased maintenance costs and increased maintenance difficulties due to environmental reasons.
In view of the above, the application provides a new energy lighthouse current detection device, a power distribution control system and a method.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the application provides a new energy lighthouse current detection device, a power distribution control system and a method, solves the problems in monitoring and maintaining the existing battery power supply loop, improves the reliability, safety and efficiency of a power system, reduces the maintenance cost, and is beneficial to better managing and utilizing electric energy resources.
In order to achieve the above purpose, the present application provides the following technical solutions: in a first aspect, the present application provides a new energy beacon current detection device, including:
the current measuring module is used for detecting a current signal in the running state of the battery power supply loop, wherein the current signal is a three-phase circuit current wave signal which comprises three phase current wave signals, and each phase is staggered by 120 degrees;
the circuit integration module is used for processing the fluctuating three-phase circuit current wave to a current state diagram with the same variation amplitude based on the image, and marking the three-phase current respectively; taking one current signal as a reference current signal, converting the current signals of other two phases into a current state diagram corresponding to the change under the same space dimension with the reference current signal under the same time frame, looking up a waveform diagram with continuous time frames, and recording the time frames of the current signal difference values between the current signals;
the image analysis module is used for carrying out real-time monitoring and current data analysis based on the integrated current state diagram, and comparing and analyzing the current data to obtain whether currents of three phases are uniformly distributed;
the depth analysis module is used for carrying out depth analysis on the current state diagram according to the historical current distribution data if the current distribution of the three phases is uneven, obtaining specific fault reasons and sending out early warning instructions based on the fault reasons;
wherein: calculating phase differences among the three phases according to a floating interval of a current signal difference value of the time frame statistics;
obtaining a normal fluctuation frequency interval between three-phase circuit current wave signals based on historical current distribution data, and setting the current normal fluctuation frequency interval as a current change threshold;
if the floating change among the three-phase circuit current wave signals is within the current change threshold, the currents of the 3 phases corresponding to the three-phase currents are balanced, and the load is uniformly distributed among the three phases;
if the floating change between the three-phase circuit current wave signals is not within the current change threshold, the currents of the 3 phases corresponding to the three-phase currents are unbalanced, and the load is unevenly distributed among the three phases.
In a preferred embodiment, the system further comprises a WiFi transmission module, the depth analysis module is transmitted to an external control end through the WiFi transmission module, and the external control end comprises a power distribution monitoring module.
In a preferred embodiment, the analysis logic for the cause of the fault is:
the three-phase circuit current wave signals are respectively marked as A-phase current wave, B-phase current wave and C Xiang Dianliu wave; taking A Xiang Dianliu wave as a reference current wave curve, respectively obtaining corresponding current amplitude change values of B-phase current wave and A Xiang Dianliu wave at the same time frameAnd C-phase current wave and A Xiang Dianliu wave are at corresponding current amplitude variation values +.>The method comprises the steps of carrying out a first treatment on the surface of the Thereby obtaining a current amplitude variation slope based on the current amplitude variation values corresponding to the adjacent time frames; obtaining curve waveform similarity based on the current amplitude change slope;
if the curve waveform similarity of the A-phase current wave, the B-phase current wave and the C-phase current wave is within the curve waveform similarity threshold, the current distribution non-uniformity corresponding to the A-phase current wave, the B-phase current wave and the C-phase current wave is time delay lag, and the fault of the operation equipment is indicated;
if the curve waveform similarity of the A-phase current wave, the B-phase current wave and the C-phase current wave is not within the curve waveform similarity threshold, the current distribution non-uniformity corresponding to the A-phase current wave, the B-phase current wave and the C-phase current wave is harmonic and distorted, and the power system fault is indicated.
The utility model provides a new forms of energy beacon distribution control system, its is based on a new forms of energy beacon electric current detection device realize, include:
the power distribution monitoring module is used for detecting a current signal in a loop running state through the current measuring module, amplifying and rectifying the weak electric signal by the amplifying and rectifying module, and comparing the weak electric signal with a minimum maximum current in a loop stable working state which is manually set by the comparator, and then carrying out real-time current adjustment and supplementation aiming at the running state;
the inductor plays a role in stabilizing current, and the power distribution monitoring module controls the new energy battery pack or the standby battery pack to be introduced into the new energy lighthouse in a direct current mode;
and the isolation module is used for converting the input current signal into the output current signal and isolating the input circuit from the output circuit so as to protect other elements in the circuit.
In a preferred embodiment, the specific application logic of the power distribution monitoring module is:
comparing the output current of the comparator with a preset current threshold; the preset current threshold includes a minimum current I min And maximum current I max ；
If the output current is greater than the maximum current I max The current output in the new energy battery pack or the standby battery pack is regulated through the power distribution monitoring module, and the power distribution monitoring module regulates the current to be I min And I max The damage to the service life of the new energy lighthouse caused by overlarge current is avoided;
if the output current is at the minimum current I min And maximum current I max Between them, new energyThe source battery pack or the standby battery pack is powered in a direct current mode, and current control is not performed;
if the output current is smaller than the minimum current I min And the power distribution monitoring module is used for exchanging the new energy battery pack or the standby battery pack, and the battery pack is exchanged to supply power in a direct current mode.
In a preferred embodiment, the device further comprises an electric power control circuit,
charging and discharging by a new energy power generation plate;
the triode drives the new energy power generation plate, and meanwhile, an externally input PWM pulse width modulation signal controls the current of the CE pole of the triode through a current limiting resistor by driving the base electrode of the triode, so that the discharge power of the new energy power generation plate is controlled.
In a second aspect, the application provides a new energy lighthouse power distribution control method, which is based on the implementation of the new energy lighthouse power distribution control system, and specifically comprises the following steps:
the current signal in the loop running state is detected by the current measuring module, and the weak electric signal is amplified and rectified by the amplifying and rectifying module and transmitted to enter the comparator to be compared with the minimum maximum current in the loop stable working state set by people, and then real-time current adjustment and supplementation are carried out for the running state.
In a third aspect, the present application provides a computer program product stored on a computer readable medium, comprising a computer readable program, for providing a user input interface to implement the new energy lighthouse power distribution control system when executed on an electronic device.
The application discloses a new energy lighthouse current detection device, a power distribution control system and a method, which have the technical effects and advantages that:
the application monitors the current signal corresponding to the new energy lighthouse in real time and performs image analysis on the current signal. The problem of abnormal or uneven current distribution is detected rapidly, the problem is diagnosed and maintained more accurately by integrating the three-phase current waveform into a current state diagram, when the system detects the uneven or abnormal current distribution, the system can generate an early warning instruction, the reliability, the operability and the maintainability of a battery power supply loop are improved, the stable operation of a power system is ensured, the faults of the power system are reduced, the efficiency is improved, and the maintenance cost is reduced.
According to the application, accurate power distribution control is performed through the new energy power generation plate, and charging or discharging is performed according to actual requirements, so that electric energy management and optimization are facilitated, the efficiency, reliability and sustainability of a renewable energy system are improved, energy waste is reduced, and the renewable energy system is integrated with an automation system and a remote monitoring system to realize remote monitoring and control, so that the operability and convenience of the system are improved.
Drawings
FIG. 1 is a schematic diagram of overall power distribution control of a new energy lighthouse;
FIG. 2 is a schematic diagram of a circuit control architecture of the power distribution control system;
FIG. 3 is a schematic diagram of a new energy lighthouse current detection device;
FIG. 4 is a flow chart of a new energy lighthouse current detection method;
FIG. 5 is a logic diagram of the processing of the three-phase circuit current wave signal of the image analysis module;
fig. 6 is a circuit diagram of an electric power control.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1: referring to fig. 3-4, the present embodiment provides a new energy beacon current detection device, configured to detect a current signal between a battery pack and a battery cell or between battery packs of an independent beacon, where the current detection device includes a current measurement module, a circuit integration module, an image analysis module, and a depth analysis module, where the modules are connected by wired and/or wireless connection to implement data transmission between the modules;
the current measurement module is used for detecting a current signal when the battery power supply loop is in an operation state, wherein the current signal is a three-phase circuit current wave signal;
what needs to be explained here is: wherein the current measurement module includes, but is not limited to, a current sensor;
the three-phase circuit current wave is collected through a coil current method, current signals are sampled synchronously, and the three-phase circuit current wave presents different states, so that the configuration and the working condition of the current battery power supply loop are reflected. The three-phase circuit current wave comprises three phase current wave signals, and each phase is staggered by 120 degrees.
The circuit integration module is used for processing the fluctuating three-phase circuit current wave to a current state diagram with the same variation amplitude based on the image, and marking the three-phase current respectively;
what needs to be explained here is: and converting the current signals of other two phases by taking one current signal as a reference current signal, looking up a corresponding changed current state diagram under the same time frame under the same spatial dimension with the reference current signal, looking up a waveform diagram with continuous time frames, and recording the time frames of the current signal difference values between the current signals.
The image analysis module is used for carrying out real-time monitoring and current data analysis based on the integrated current state diagram, and comparing and analyzing the current data to obtain whether currents of three phases are uniformly distributed;
the specific operation is as follows: referring to fig. 5, according to the floating interval of the current signal difference value of the time frame statistics, the phase difference between the three phases is calculated;
obtaining a normal fluctuation frequency interval between three-phase circuit current wave signals based on historical current distribution data, and setting the current normal fluctuation frequency interval as a current change threshold;
if the floating change between the three-phase circuit current wave signals is within the current change threshold, the currents of the 3 phases corresponding to the three-phase currents are balanced, which means that the load is uniformly distributed among the three phases. This means that the three phase currents have equal amplitude and phase difference, thus keeping the system stable. Balancing three-phase currents is the most ideal case.
If the floating change between the three-phase circuit current wave signals is not within the current change threshold, the currents of the 3 phases corresponding to the three-phase currents are unbalanced, and the load is unevenly distributed among the three phases. In particular due to different demands or faults of different loads. Unbalanced currents may cause instability in the power system, requiring steps to be taken to adjust the load to rebalance it.
And the depth analysis module is used for carrying out depth analysis on the current state diagram according to the historical current distribution data if the current distribution of the three phases is uneven, acquiring specific fault reasons and sending out early warning instructions based on the fault reasons.
What needs to be explained here is: normally, the current waveforms in a three-phase circuit should be synchronized, i.e. the current waveforms of the a, B and C phases are identical in phase and reach a maximum amplitude at the same point in time. If the current distribution of the three phases is not uniform, the current waveform of one phase may be different from that of the other phase if the load of the other phase is large. Possible reasons are: load imbalance, equipment failure, control system failure, power supply failure, harmonics and aberrations, or power system failure;
the analysis logic of the fault cause is as follows:
the three-phase circuit current wave signals are respectively marked as A-phase current wave, B-phase current wave and C Xiang Dianliu wave; taking A Xiang Dianliu wave as a reference current wave curve, respectively obtaining corresponding current amplitude change values of B-phase current wave and A Xiang Dianliu wave at the same time frameAnd C-phase current wave and A Xiang Dianliu wave are at corresponding current amplitude variation values +.>The method comprises the steps of carrying out a first treatment on the surface of the Thereby obtaining a current amplitude variation slope based on the current amplitude variation values corresponding to the adjacent time frames; obtaining curve waveform similarity based on the current amplitude change slope;
what needs to be explained here is: between B Xiang Dianliu wave and A phase current waveThe current amplitude variation value of (2) isThe method comprises the steps of carrying out a first treatment on the surface of the Marking the current time frame as +.>The current amplitude change value is +.>The current amplitude variation value is +.>The corresponding current amplitude change slope is marked as +.>The method comprises the steps of carrying out a first treatment on the surface of the Sequentially get->And record the slope set as。
The slope calculation formula is as follows:
；
the specific slope calculation is as follows:
；
it should be noted that: the above-described slope calculation formula is a general slope calculation method,is->The amplitude of the current wave changes corresponding to different phases in corresponding time frames, and the same applies +.>Is->The change amplitude of the current wave corresponding to different phases in the corresponding time frame;
thus, in the present embodiment, the A Xiang Dianliu wave is used as the reference waveform, and the current amplitude variation between the B-phase current wave and the A-phase current wave is marked asThe corresponding current amplitude variation frequency is marked +.>The method comprises the steps of carrying out a first treatment on the surface of the The current amplitude variation value between the C-phase current wave and the A-phase current wave is marked as +.>The corresponding current amplitude change frequency based on the time frame is marked as；
Because the time frames of three-phase current wave acquisition are synchronous, the frequency mark of current amplitude change under the corresponding time frame can be obtainedAnd->The curve waveform similarity is used for respectively representing the comparison of the B-phase current wave and the C-phase current wave with the A-phase current wave;
if the curve waveform similarity of the A-phase current wave, the B-phase current wave and the C-phase current wave is within the curve waveform similarity threshold, the current distribution non-uniformity corresponding to the A-phase current wave, the B-phase current wave and the C-phase current wave is time delay lag, and the fault of the operation equipment is indicated;
if the curve waveform similarity of the A-phase current wave, the B-phase current wave and the C-phase current wave is not within the curve waveform similarity threshold, the current distribution non-uniformity corresponding to the A-phase current wave, the B-phase current wave and the C-phase current wave is harmonic and distorted, and the power system fault is indicated;
what needs to be explained here is: comparing the current waveforms of the B phase and the C phase with the current amplitude of the A phase on the same time frame to obtain the current amplitude change slope between adjacent time frames, namely the change speed of the current, and calculating the similarity of curve waveforms by using the current amplitude change slope. If the similarity of the curve waveforms of the A Xiang Dianliu wave, the B phase current wave and the C phase current wave is within a predetermined curve waveform similarity threshold, the waveforms are substantially similar to a certain extent. Based on the results of the similarity of the curve waveforms, different types of problems can be detected:
if the curve waveform similarity is within the threshold, but the current distribution of the a Xiang Dianliu wave, the B phase current wave, and the C phase current wave is not uniform and there is a time delay lag, then it may be an indication that the device is malfunctioning. Such uneven distribution may be caused by faulty equipment, resulting in slower rates of change of certain phase currents.
If the similarity of the curve waveforms is not within the threshold, the curve waveforms of the A Xiang Dianliu wave, the B phase current wave and the C phase current wave are larger in difference. This may indicate the presence of harmonics and distortion in the power system, which may be caused by nonlinear loads or other power supply problems.
By comparing the slope and similarity of the current waveforms, it may be helpful to detect different types of problems in the power system, including equipment failure and power quality problems. It can be used to monitor and maintain the stability and reliability of the power system in real time.
The new energy beacon current detection device to be expressed in the embodiment is a device for monitoring the current state of a battery power supply loop, detecting faults by analyzing current data, firstly determining the change condition of current, and then integrating and performing image processing on fluctuation current signals from a three-phase circuit so as to convert the fluctuation current signals into a current state diagram with the same change amplitude. The change condition of the current state can be clearly known, and the currents of the three phases can be marked for subsequent analysis.
The current data in the integrated current state diagram is monitored in real time, and comparison and analysis are carried out to determine whether the currents of the three phases are uniformly distributed. This helps detect any current non-uniformities, which may indicate potential problems, and if the current distribution is non-uniform, this module may further analyze the current state diagram deeply and determine the specific cause of the fault based on historical current distribution data. Once the cause of the fault is determined, it will issue an early warning command to inform maintenance personnel or operators to take the necessary action to solve the problem.
Example 2: referring to fig. 1-2, the present embodiment provides, based on embodiment 1, a new energy beacon power distribution control system, including:
the power distribution monitoring module is used for detecting a current signal in a loop running state through the current measuring module, amplifying and rectifying the weak electric signal by the amplifying and rectifying module, and comparing the weak electric signal with a minimum maximum current in a loop stable working state which is manually set by the comparator, and then carrying out real-time current adjustment and supplementation aiming at the running state;
comparing the output current of the comparator with a preset current threshold; the preset current threshold includes a minimum current I min And maximum current I max ；
If the output current is greater than the maximum current I max The current output in the new energy battery pack or the standby battery pack is regulated through the power distribution monitoring module, and the power distribution monitoring module regulates the current to be I min And I max The damage to the service life of the new energy lighthouse caused by overlarge current is avoided;
if the output current is at the minimum current I min And maximum current I max If the current is not controlled, the new energy battery pack or the standby battery pack is powered in a direct current mode, and current control is not performed;
if the output current is smaller than the minimum current I min The power distribution monitoring module is used for exchanging a new energy battery pack or a standby battery pack, and the battery pack is exchanged to supply power in a direct current mode;
what needs to be explained here is: ensuring the current within a safe range to prevent overload from damaging the new energy lighthouse or affecting the life of the new energy lighthouse. By setting I min And I max The current threshold value can be automatically controlled and regulated by the system according to actual conditions so as to keep the stability and the adjustability of the currentReliability.
Further comprises:
the inductor plays a role in stabilizing current, and the power distribution monitoring module controls the new energy battery pack or the standby battery pack to be introduced into the new energy lighthouse in a direct-current mode.
And the isolation module is used for converting the input current signal into the output current signal and isolating the input circuit from the output circuit so as to protect other elements in the circuit.
The power supply battery pack of the new energy beacon according to the embodiment has two forms, namely a new energy battery pack and a standby battery pack, wherein the new energy battery pack is a charging and discharging device configured according to the practical application environment of the new energy beacon, and the working principle of the new energy battery pack is that a new energy power generation panel (such as a solar panel or a wind power generation device) is utilized to collect renewable energy sources in the environment, convert the renewable energy sources into electric energy, and then store the electric energy into the battery pack. These batteries are typically lithium ion batteries or other rechargeable batteries that can efficiently store electrical energy and release it when needed to maintain the power to the lighthouse. Such a system may operate during the day or when there is sufficient renewable energy available and store excess electrical energy in the battery pack for use at night or in situations of insufficient energy.
The backup battery pack is used as a backup power source, and a storage battery technology, such as a lead-acid storage battery or a nickel-cadmium storage battery, is generally adopted. These battery packs remain charged to quickly power up to maintain operation of the lighthouse when the new energy battery pack is not providing enough power. Therefore, even if the weather is bad or the environmental conditions are not suitable for renewable energy power generation, the lighthouse can still keep continuous power supply, and the normal operation of the lighthouse is ensured.
The combination of these two battery forms ensures that the new energy lighthouse can obtain reliable power supply under various environmental conditions to ensure safe operation and navigation functions.
The selection of the corresponding new energy battery pack and the standby battery pack is mainly monitored through the power distribution monitoring module, and the power distribution monitoring module is used for monitoring power requirements, battery states, environmental conditions and other key parameters in real time so as to intelligently determine when to use the new energy battery pack or the standby battery pack, ensure that the new energy lighthouse can obtain reliable power supply under various conditions, and maximally utilize renewable energy sources, thereby improving energy efficiency and reducing running cost.
Example 3: referring to fig. 6, the present embodiment provides a new energy beacon power distribution control system based on embodiment 2, including:
charging and discharging by a new energy power generation plate; the positive electrode of the new energy power generation plate is connected with a power input end V, and is also connected with a filter circuit when the new energy power generation plate is connected with the power input end V, the filter circuit comprises two filter capacitors C which are connected in parallel, the other end of the filter circuit is connected with a grounding end GND, so that the new energy power generation plate can be ensured to have anti-interference capability, the negative electrode of the new energy power generation plate is connected with the collector electrode of a triode, and the electric power control circuit is realized through the triode to adjust current or other parameters so as to control the discharge power of the new energy power generation plate;
the triode drives the new energy power generation plate, and meanwhile, an externally input PWM pulse width modulation signal controls the current of the CE pole of the triode through a current limiting resistor by driving the base electrode of the triode, so that the discharge power of the new energy power generation plate is controlled. Wherein, the C pole represents the collector electrode, the E pole represents the emitter electrode,
the collector electrode of the triode is connected with the negative electrode of the new energy power generation plate, and the emitter electrode of the triode is connected with the grounding end GND; the amplifying function is realized in the circuit, so that the current flow direction of the LED can be controlled; when a suitable voltage is applied between the emitter and the base, the current in the transistor is amplified, thereby controlling the current between the collector and the emitter.
The first end of the current limiting resistor is connected with a signal input end IN, and the second end of the current limiting resistor is connected with the base electrode of the triode and used for adjusting the current IN the circuit so as to control the discharge power of the new energy power generation plate. Namely: by changing the resistance value of the current limiting resistor, the discharge power can be adjusted in real time so as to meet different application requirements.
Example 4: referring to fig. 1-2, the detailed descriptions of embodiments 1-3 are omitted, and the present embodiment provides a new energy beacon power distribution control method, which includes the following steps:
detecting a current signal in a loop running state through a current measuring module, amplifying and rectifying the weak electric signal by an amplifying and rectifying module, comparing the weak electric signal with a minimum maximum current in a loop stable working state set by people, and then carrying out real-time current adjustment and supplementation on the running state;
comparing the output current of the comparator with a preset current threshold; the preset current threshold includes a minimum current I min And maximum current I max ；
If the output current is greater than the maximum current I max The current output in the new energy battery pack or the standby battery pack is regulated through the power distribution monitoring module, and the power distribution monitoring module regulates the current to be I min And I max The damage to the service life of the new energy lighthouse caused by overlarge current is avoided;
if the output current is at the minimum current I min And maximum current I max If the current is not controlled, the new energy battery pack or the standby battery pack is powered in a direct current mode, and current control is not performed;
if the output current is smaller than the minimum current I min And the power distribution monitoring module is used for exchanging the new energy battery pack or the standby battery pack, and the battery pack is exchanged to supply power in a direct current mode.
Example 5: in a part not described in detail in this embodiment, but in the description of embodiment 1, a computer program product stored on a computer readable medium is provided, including a computer readable program for providing a user input interface to implement the new energy lighthouse power distribution control system when executed on an electronic device.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Finally: the foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (8)
1. The utility model provides a new forms of energy beacon electric current detection device which characterized in that includes:
the current measuring module is used for detecting a current signal in the running state of the battery power supply loop, wherein the current signal is a three-phase circuit current wave signal which comprises three phase current wave signals, and each phase is staggered by 120 degrees;
the circuit integration module is used for processing the fluctuating three-phase circuit current wave to a current state diagram with the same variation amplitude based on the image, and marking the three-phase current respectively; taking one current signal as a reference current signal, converting the current signals of other two phases into a current state diagram corresponding to the change under the same space dimension with the reference current signal under the same time frame, looking up a waveform diagram with continuous time frames, and recording the time frames of the current signal difference values between the current signals;
the image analysis module is used for carrying out real-time monitoring and current data analysis based on the integrated current state diagram, and comparing and analyzing the current data to obtain whether currents of three phases are uniformly distributed;
the depth analysis module is used for carrying out depth analysis on the current state diagram according to the historical current distribution data if the current distribution of the three phases is uneven, obtaining specific fault reasons and sending out early warning instructions based on the fault reasons;
wherein: calculating phase differences among the three phases according to a floating interval of a current signal difference value of the time frame statistics;
obtaining a normal fluctuation frequency interval between three-phase circuit current wave signals based on historical current distribution data, and setting the current normal fluctuation frequency interval as a current change threshold;
if the floating change among the three-phase circuit current wave signals is within the current change threshold, the currents of the 3 phases corresponding to the three-phase currents are balanced, and the load is uniformly distributed among the three phases;
if the floating change between the three-phase circuit current wave signals is not within the current change threshold, the currents of the 3 phases corresponding to the three-phase currents are unbalanced, and the load is unevenly distributed among the three phases.
2. The new energy beacon current detection device according to claim 1, wherein: the power distribution monitoring system comprises a depth analysis module, a WiFi transmission module, an external control end and a power distribution monitoring module.
3. The new energy beacon current detection device according to claim 2, wherein: the analysis logic of the fault cause is as follows:
the three-phase circuit current wave signals are respectively marked as A-phase current wave, B-phase current wave and C Xiang Dianliu wave; taking A Xiang Dianliu wave as a reference current wave curve, respectively obtaining corresponding current amplitude change values of B-phase current wave and A Xiang Dianliu wave at the same time frameAnd C-phase current wave and A Xiang Dianliu wave are at corresponding current amplitude variation values +.>The method comprises the steps of carrying out a first treatment on the surface of the Thereby obtaining a current amplitude variation slope based on the current amplitude variation values corresponding to the adjacent time frames; obtaining curve waveform similarity based on the current amplitude change slope;
if the curve waveform similarity of the A-phase current wave, the B-phase current wave and the C-phase current wave is within the curve waveform similarity threshold, the current distribution non-uniformity corresponding to the A-phase current wave, the B-phase current wave and the C-phase current wave is time delay lag, and the fault of the operation equipment is indicated;
if the curve waveform similarity of the A-phase current wave, the B-phase current wave and the C-phase current wave is not within the curve waveform similarity threshold, the current distribution non-uniformity corresponding to the A-phase current wave, the B-phase current wave and the C-phase current wave is harmonic and distorted, and the power system fault is indicated.
4. A new forms of energy beacon distribution control system which characterized in that: the new energy lighthouse current detection device is realized based on any one of claims 1-3, and comprises:
the power distribution monitoring module is used for detecting a current signal in a loop running state through the current measuring module, amplifying and rectifying the weak electric signal by the amplifying and rectifying module, and comparing the weak electric signal with a minimum maximum current in a loop stable working state which is manually set by the comparator, and then carrying out real-time current adjustment and supplementation aiming at the running state;
the inductor plays a role in stabilizing current, and the power distribution monitoring module controls the new energy battery pack or the standby battery pack to be introduced into the new energy lighthouse in a direct current mode;
and the isolation module is used for converting the input current signal into the output current signal and isolating the input circuit from the output circuit so as to protect other elements in the circuit.
5. The new energy lighthouse power distribution control system of claim 4, wherein: the specific application logic of the power distribution monitoring module is as follows:
comparing the output current of the comparator with a preset current threshold; the preset current threshold includes a minimum current I min And maximum current I max ；
If the output current is greater than the maximum current I max The current output in the new energy battery pack or the standby battery pack is regulated through the power distribution monitoring module, and the power distribution monitoring module regulates the current to be I min And I max The damage to the service life of the new energy lighthouse caused by overlarge current is avoided;
if the output current is at the minimum current I min And maximum current I max If the current is not controlled, the new energy battery pack or the standby battery pack is powered in a direct current mode, and current control is not performed;
if the output current is smaller than the minimum current I min And the power distribution monitoring module is used for exchanging the new energy battery pack or the standby battery pack, and the battery pack is exchanged to supply power in a direct current mode.
6. The new energy lighthouse power distribution control system of claim 5, wherein: also included is an electrical power control circuit that,
charging and discharging by a new energy power generation plate;
the triode drives the new energy power generation plate, and meanwhile, an externally input PWM pulse width modulation signal controls the current of the CE pole of the triode through a current limiting resistor by driving the base electrode of the triode, so that the discharge power of the new energy power generation plate is controlled.
7. The new energy lighthouse power distribution control method is characterized by being based on the realization of the new energy lighthouse power distribution control system according to any one of claims 4-6, and comprises the following specific steps:
the current signal in the loop running state is detected by the current measuring module, and the weak electric signal is amplified and rectified by the amplifying and rectifying module and transmitted to enter the comparator to be compared with the minimum maximum current in the loop stable working state set by people, and then real-time current adjustment and supplementation are carried out for the running state.
8. A computer program product stored on a computer readable medium, characterized by: a computer readable program for providing, when executed on an electronic device, a user input interface to implement a new energy lighthouse power distribution control system of any of claims 4-6.
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| CN106556766A (en) * | 2016-10-11 | 2017-04-05 | 国网上海市电力公司 | A kind of distribution network failure monitoring system based on distribution line multidate information |
| CN107069734A (en) * | 2017-06-02 | 2017-08-18 | 北京英瑞来科技有限公司 | A kind of active filter and method with lightning protection isolation with arc-detection function |
| CN111751668A (en) * | 2020-06-29 | 2020-10-09 | 深圳供电局有限公司 | Method and system for judging internal and external faults of bus area based on power grid fault recording graph |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556766A (en) * | 2016-10-11 | 2017-04-05 | 国网上海市电力公司 | A kind of distribution network failure monitoring system based on distribution line multidate information |
| CN107069734A (en) * | 2017-06-02 | 2017-08-18 | 北京英瑞来科技有限公司 | A kind of active filter and method with lightning protection isolation with arc-detection function |
| CN111751668A (en) * | 2020-06-29 | 2020-10-09 | 深圳供电局有限公司 | Method and system for judging internal and external faults of bus area based on power grid fault recording graph |
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