CN110311470B - Wisdom power supply system based on solar photovoltaic board - Google Patents
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Abstract
The invention provides an intelligent power supply system based on a solar photovoltaic panel, which comprises: the system comprises a monitoring terminal, a communication server and a plurality of photovoltaic power supply subsystems; each photovoltaic power supply subsystem performs information interaction with the monitoring terminal 10 through the communication server; and the monitoring terminal is used for monitoring the running state of each photovoltaic power supply subsystem. The intelligent power supply system based on the solar photovoltaic panel can convert solar energy into electric energy, can be stored in the solar storage battery pack at the same time, and further supplies power to electric equipment.
Description
Technical Field
The invention relates to the technical field of photovoltaic power supply, in particular to an intelligent power supply system based on a solar photovoltaic panel.
Background
Solar energy, as a huge renewable energy source, reaches the earth's surface daily with radiant energy equivalent to the energy of hundreds of millions of barrels of oil burning. The solar energy is developed and utilized abundantly and widely, and no pollution or little pollution is generated to the environment. The development and utilization of solar energy are of great strategic importance no matter being examined from the high level of the economic society going through sustainable development and protecting the earth ecological environment on which human beings depend for survival, or from the point of solving the problem of real energy supply with special purposes. Photovoltaic power supply has many incomparable advantages compared with traditional energy sources, and is recognized as one of the most ideal energy supply modes for human beings. The existing photovoltaic power supply system is composed of a plurality of solar photovoltaic panels, once the solar photovoltaic panels break down, the power supply efficiency of the photovoltaic power supply system is directly influenced, and a fire disaster can be caused in serious cases.
Disclosure of Invention
In order to solve the problems, the invention provides an intelligent power supply system based on a solar photovoltaic panel.
The purpose of the invention is realized by adopting the following technical scheme:
the utility model provides a wisdom power supply system based on solar photovoltaic board, this system includes: the system comprises a monitoring terminal, a communication server and a plurality of photovoltaic power supply subsystems; each photovoltaic power supply subsystem carries out information interaction with the monitoring terminal through the communication server; the monitoring terminal is used for monitoring the running state of each photovoltaic power supply subsystem;
the photovoltaic power supply subsystem includes: the solar photovoltaic panel assembly comprises a solar photovoltaic panel set, a solar controller, a solar storage battery set and an inverter; the solar photovoltaic panel set is erected on an outdoor support and faces the sunlight irradiation direction, an electric box is fixed on the rear side of the support, a solar controller, a solar storage battery set and an inverter are arranged in the electric box, the solar photovoltaic panel set, the solar controller and the solar storage battery set are in charging connection, the solar controller controls the charging and discharging process of the solar storage battery set and provides over-current protection, the solar photovoltaic panel set and the solar storage battery set are electrically connected with the inverter as power sources, and the inverter converts direct current output by the solar photovoltaic panel set and the solar storage battery set into 220V alternating current to supply power to electric equipment.
Preferably, the monitoring terminal includes: the system comprises a data acquisition module and a remote monitoring center;
the data acquisition module is used for acquiring the running state data of each photovoltaic power supply subsystem and transmitting the running state data to the remote monitoring center;
and the remote monitoring center is used for processing the received running state data, analyzing the running state of each photovoltaic power supply subsystem and giving an alarm when the photovoltaic power supply subsystems work abnormally.
Preferably, the data acquisition module includes a wireless sensor network formed by a plurality of sensor monitoring nodes and a base station device, the sensor monitoring nodes are used for acquiring the operation state data of the monitored position and transmitting the operation state data to the base station device, and the base station device gathers the operation state data acquired by each sensor monitoring node and transmits the operation state data to the remote monitoring center.
Preferably, the sensor monitoring node comprises: one or more of a voltage sensor, a current sensor, a photosensitive sensor, a temperature sensor, a photovoltaic illuminance sensor.
Preferably, the base station device is arranged at a central position of the monitoring area, each sensor monitoring node is deployed at a monitoring position of each photovoltaic power supply subsystem, and after deployment is completed, each sensor monitoring node forms a wireless sensor network for acquiring running state data of each photovoltaic power supply subsystem in a self-organizing manner.
Preferably, after the deployment of the sensor monitoring nodes and the base station device is completed, each sensor monitoring node constructs a wireless sensor network according to a preset clustering rule, wherein the preset clustering rule specifically comprises:
(1) dividing the monitoring area by using a regular hexagon by taking the base station equipment as a central point of the regular hexagon until the monitoring area is covered, and obtaining a plurality of monitoring subregions, wherein the side length of the regular hexagon is a;
(2) the base station equipment sends a clustering instruction to the whole network, and after the sensor monitoring nodes in each monitoring sub-area receive the clustering instruction, the capacity value of the cluster head in the monitoring sub-area where the sensor monitoring nodes can act is calculated according to the following formula:
in the formula, ApFor a sensor monitoring node p to be able to assume the capability value of the clusterhead in the sub-area it is monitoring, Eres(p) is the current residual energy value of the sensor monitoring node p, d (p, Sink) is the distance between the sensor monitoring node p and the base station equipment, and TcurrentFor the current ambient temperature value, T0(p) an ideal ambient temperature value required by the sensor to monitor the node p, epsilon is an ambient loss factor, NpNumber of sensor monitoring nodes in the monitoring sub-area where the sensor monitoring node p is located, E1Energy loss per unit time value, E, for the sensor monitoring node for communication2The energy loss value in each unit time is calculated and transmitted for the sensor monitoring node;
(3) and selecting the sensor monitoring node with the largest energy value in each monitoring sub-area as a cluster head, and adding the rest sensor monitoring nodes in the monitoring sub-area as cluster member nodes into the cluster to finally realize clustering.
The invention has the beneficial effects that: the intelligent power supply system based on the solar photovoltaic panel can convert solar energy into electric energy, can be stored in the solar storage battery pack at the same time, and further supplies power to electric equipment.
The wireless monitoring to the system can be realized by utilizing the wireless sensor network technology, maintenance personnel are not required to inspect and repair, and the investment of manpower and material resources is saved.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic structural diagram of an intelligent power supply system based on a solar photovoltaic panel according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a photovoltaic power supply subsystem provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of a monitoring terminal according to an embodiment of the present invention.
Reference numerals: a monitor terminal 10; a communication server 20; a photovoltaic power subsystem 30; a data acquisition module 11; a remote monitoring center 12; an intelligent terminal device 13; a solar photovoltaic panel group 31; a solar controller 32; a solar battery pack 33; an inverter 34; the powered device 35.
Detailed Description
The invention is further described with reference to the following examples.
The utility model provides a wisdom power supply system based on solar photovoltaic board, this system includes: the system comprises a monitoring terminal 10, a communication server 20 and a plurality of photovoltaic power supply subsystems 30; each photovoltaic power supply subsystem 30 performs information interaction with the monitoring terminal 10 through the communication server 20; the monitoring terminal 10 is used for monitoring the operation state of each photovoltaic power supply subsystem 30.
In an alternative embodiment, the photovoltaic power subsystem 30 includes: the solar photovoltaic panel group 31, the solar controller 32, the solar storage battery 33 and the inverter 34; the solar photovoltaic panel assembly 31 is erected on an outdoor support and faces the sunlight irradiation direction, an electric box is fixed on the rear side of the support, the solar controller 32, the solar storage battery pack 33 and the inverter 32 are arranged in the electric box, the solar photovoltaic panel assembly 31, the solar controller 32 and the solar storage battery pack 33 are in charging connection, the solar controller 32 controls the charging and discharging process of the solar storage battery pack 33 and provides over-current protection, the solar photovoltaic panel assembly 31 and the solar storage battery pack 33 are used as a power source and are electrically connected with the inverter 34, and the inverter 34 converts direct current output by the solar photovoltaic panel assembly 31 and the solar storage battery pack 33 into 220V alternating current to supply power for the electric equipment 35.
In an alternative embodiment, the monitoring terminal 10 includes: a data acquisition module 11 and a remote monitoring center 12;
the data acquisition module 11 is configured to acquire operating state data of each photovoltaic power supply subsystem and transmit the operating state data to the remote monitoring center 12;
the remote monitoring center 12 is configured to process the received operation state data, analyze the operation state of each photovoltaic power supply subsystem 30, and alarm when the photovoltaic power supply subsystem 30 is abnormal.
In an optional implementation manner, the monitoring terminal further includes: intelligent terminal equipment 13, intelligent terminal equipment 13 with remote monitoring center 12 communication connection, intelligent terminal equipment 13 can accept remote monitoring center 12's analysis result to maintenance person's accessible intelligent terminal equipment 13 knows each photovoltaic power supply subsystem's running state, intelligent terminal equipment 13 still is used for accepting remote monitoring center 12's alarm information, so that maintenance person in time takes measures to maintain corresponding unusual photovoltaic power supply subsystem. Wherein, the intelligent terminal device 13 may be: mobile phones, tablet computers, notebooks, etc.
In an optional embodiment, the data acquisition module 11 includes a wireless sensor network formed by a plurality of sensor monitoring nodes and a base station device, the sensor monitoring nodes are configured to acquire operation state data of a monitored location and transmit the operation state data to the base station device, and the base station device aggregates the operation state data acquired by each sensor monitoring node and transmits the operation state data to the remote monitoring center 12.
The invention has the beneficial effects that: the intelligent power supply system based on the solar photovoltaic panel provided by the embodiment of the invention can convert solar energy into electric energy, and can be stored in the solar storage battery pack to supply power to electric equipment.
The wireless monitoring to the system can be realized by utilizing the wireless sensor network technology, maintenance personnel are not required to inspect and repair, and the investment of manpower and material resources is saved.
In an optional embodiment, the sensor monitoring node comprises: one or more of a voltage sensor, a current sensor, a photosensitive sensor, a temperature sensor, a photovoltaic illuminance sensor.
In an optional embodiment, the base station device is disposed at a central position of the monitoring area, each sensor monitoring node is deployed at a monitoring position of each photovoltaic power supply subsystem 30, and after deployment is completed, each sensor monitoring node forms a wireless sensor network for acquiring operation state data of each photovoltaic power supply subsystem 30 in a self-organizing manner.
In an optional embodiment, after deployment of the sensor monitoring nodes and the base station device is completed, each sensor monitoring node constructs a wireless sensor network according to a preset clustering rule, where the preset clustering rule specifically is:
(1) dividing the monitoring area by using a regular hexagon by taking the base station equipment as a central point of the regular hexagon until the monitoring area is covered, and obtaining a plurality of monitoring subregions, wherein the side length of the regular hexagon is a;
(2) the base station equipment sends a clustering instruction to the whole network, and after the sensor monitoring nodes in each monitoring sub-area receive the clustering instruction, the capacity value of the cluster head in the monitoring sub-area where the sensor monitoring nodes can act is calculated according to the following formula:
in the formula, ApFor a sensor monitoring node p to be able to assume the capability value of the clusterhead in the sub-area it is monitoring, Eres(p) is the current residual energy value of the sensor monitoring node p, and d (p, Sink) is the sensor monitoringDistance of node p from the base station device, TcurrentFor the current ambient temperature value, T0(p) an ideal ambient temperature value required by the sensor to monitor the node p, epsilon is an ambient loss factor, NpNumber of sensor monitoring nodes in the monitoring sub-area where the sensor monitoring node p is located, E1Energy loss per unit time value, E, for the sensor monitoring node for communication2The energy loss value in each unit time is calculated and transmitted for the sensor monitoring node;
(3) and selecting the sensor monitoring node with the largest energy value in each monitoring sub-area as a cluster head, and adding the rest sensor monitoring nodes in the monitoring sub-area as cluster member nodes into the cluster to finally realize clustering.
In the above embodiment, by dividing the monitoring area into a plurality of monitoring sub-areas of equal size, then, the ability value of the sensor monitoring node in each monitoring sub-area capable of serving as the cluster head is calculated by the formula, then the sensor monitoring node with the maximum capability value is selected to be a cluster head, and the rest sensor monitoring nodes are added into the corresponding cluster as cluster member nodes, the process not only considers the residual capacity value of the monitoring node of the sensor, but also considers the influence of the current environment temperature on the working efficiency of the sensor and the influence of the current environment temperature on the space distance between the sensor and the base station equipment, and then the sensor monitoring node with the largest capacity value serves as a cluster head, so that the energy loss of the whole wireless sensor network is balanced, the phenomenon that the sensor monitoring node with the low capacity value serves as the cluster head to cause the premature death of the sensor monitoring node is avoided, and the service life of the wireless sensor network is prolonged.
In an alternative embodiment, before the monitoring area is segmented, the side length a of the regular hexagon can be determined by the following process, and the monitoring area is segmented:
(1) after deployment of the sensor monitoring nodes and the base station equipment is completed, the base station equipment performs whole-network broadcasting, and after receiving the broadcasting, each sensor monitoring node sends a data packet carrying information of itself to the base station equipment, wherein the data packet comprises: the position information of the sensor monitoring node and the performance parameters of the sensor monitoring node are obtained;
(2) the base station equipment receives the data packets sent by the monitoring nodes of each sensor, determines the side length a of the regular hexagon according to the following formula,
wherein the content of the first and second substances,
respectively monitoring the farthest distance and the nearest distance from the node to the base station equipment for the sensors in the monitoring area,
the average density of the monitoring nodes of the sensor in the monitoring area, S is the area of the monitoring area,
average distance, sigma, from monitoring node to the base station equipment for sensors in a monitoring areafsAnd σampThe power amplification characteristic constants are respectively corresponding to the free space channel model and the multipath fading channel model.
In the foregoing embodiment, in order to maximally balance energy consumption of a network, an embodiment of the present invention provides that, when performing cluster head selection, a monitoring region is first divided into regular hexagons with the same size, and then cluster head selection is performed from a monitoring sub-region obtained by the division, so as to obtain a clustered wireless sensor network. In the embodiment, the side length of the regular hexagon is creatively determined in the manner, and the process not only considers the influence of factors such as the distance from a sensor monitoring node to base station equipment, but also considers the influence of factors such as the density of the sensor monitoring node in a monitoring area, so that the side length of the regular hexagon can be more reasonably determined, the division of the monitoring area is realized, and the construction of a subsequent wireless sensor network is facilitated.
In an optional embodiment, since the sensor monitoring node serving as the cluster head is responsible for receiving and forwarding data in the cluster, if the sensor monitoring node continues to serve as the cluster head, premature death of the cluster head may be caused, and thus real-time monitoring of the operating state of each photovoltaic power supply subsystem by the monitoring terminal is affected, a penalty threshold needs to be set, so that when the number of times that the sensor monitoring node serves as the cluster head exceeds the penalty threshold, the sensor monitoring node with the largest residual energy value can be selected from the monitoring sub-area where the sensor monitoring node is located as a new cluster head, and the cluster head serving as the sensor monitoring node before is added to the new cluster head as a cluster member node, where the penalty threshold can be determined by the following formula:
in the formula, ThiA penalty threshold for monitoring sub-region i, M is the number of monitoring sub-regions,
to monitor the cluster head initial energy value within sub-region i,
to monitor the initial time-averaged energy value of cluster member nodes within sub-region i, EthIs a preset lowest energy value, rho, capable of being used as a cluster headiFor monitoring the density, R, of sensor monitoring nodes in sub-area imax、RminRespectively monitoring the farthest distance and the nearest distance from the cluster member node in the subregion i to the cluster head ch thereof, qiTo monitor the maximum value of the length of datagrams that can be sent by a cluster member node within sub-region i, E1、E2The energy consumption of the cluster head for receiving data and sending data is respectively, d (ch, Sink) is the spatial distance from the cluster head ch to the base station equipment, and a is a preset weight coefficient which satisfies that a is more than 0 and less than 0.25.
In the above embodiment, since the sensor monitoring node serving as the cluster head is responsible for tasks of receiving intra-cluster data and forwarding data to the base station device, excessive energy is consumed in each round, if the sensor monitoring node serving as the cluster head is used up for a long time, the intra-cluster data cannot be received and forwarded due to energy exhaustion, and further the monitoring terminal is influenced to monitor the operating state of the photovoltaic power supply subsystem, and accurate data information cannot be provided for maintenance personnel. When the punishment threshold is solved, the sensor node density in the monitoring sub-area where the cluster head is located is considered, the influence of energy factors is also considered, the punishment threshold can be set in a self-adaptive mode according to the actual situation in each monitoring sub-area, the problem that the sensor monitoring node serving as the cluster head is dead too early is solved, the service life of the wireless sensor network is prolonged, and the energy consumption of the whole wireless sensor network is balanced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (2)
1. The utility model provides a wisdom power supply system based on solar photovoltaic board which characterized in that includes: the system comprises a monitoring terminal, a communication server and a plurality of photovoltaic power supply subsystems; each photovoltaic power supply subsystem carries out information interaction with the monitoring terminal through the communication server; the monitoring terminal is used for monitoring the running state of each photovoltaic power supply subsystem;
the photovoltaic power supply subsystem includes: the solar photovoltaic panel assembly comprises a solar photovoltaic panel set, a solar controller, a solar storage battery set and an inverter; the solar photovoltaic panel group is erected on an outdoor support and faces the sunlight irradiation direction, an electric box is fixed on the rear side of the support, the solar controller, the solar storage battery pack and the inverter are arranged in the electric box, the solar photovoltaic panel group, the solar controller and the solar storage battery pack are in charging connection, the solar controller controls the charging and discharging process of the solar storage battery pack and provides over-current protection, the solar photovoltaic panel group and the solar storage battery pack are electrically connected with the inverter as power supplies, and the inverter converts direct current output by the solar photovoltaic panel group and the solar storage battery pack into 220V alternating current to supply power to electric equipment;
the monitoring terminal includes: the system comprises a data acquisition module and a remote monitoring center;
the data acquisition module is used for acquiring the running state data of each photovoltaic power supply subsystem and transmitting the running state data to the remote monitoring center;
the remote monitoring center is used for processing the received operation state data, analyzing the operation state of each photovoltaic power supply subsystem and giving an alarm when the photovoltaic power supply subsystems work abnormally;
the data acquisition module comprises a wireless sensor network consisting of a plurality of sensor monitoring nodes and a base station device, wherein the sensor monitoring nodes are used for acquiring the running state data of the monitored position and transmitting the running state data to the base station device, and the base station device gathers the running state data acquired by each sensor monitoring node and transmits the running state data to the remote monitoring center;
the base station equipment is arranged at the central position of a monitoring area, each sensor monitoring node is deployed at the monitoring position of each photovoltaic power supply subsystem, and after deployment is completed, each sensor monitoring node forms a wireless sensor network for acquiring the running state data of each photovoltaic power supply subsystem in a self-organizing manner;
after deployment of the sensor monitoring nodes and the base station equipment is completed, each sensor monitoring node constructs a wireless sensor network according to a preset clustering rule, wherein the preset clustering rule specifically comprises the following steps:
(1) dividing the monitoring area by using a regular hexagon by taking the base station equipment as a central point of the regular hexagon until the monitoring area is covered, and obtaining a plurality of monitoring subregions, wherein the side length of the regular hexagon is a;
(2) the base station equipment sends a clustering instruction to the whole network, and after the sensor monitoring nodes in each monitoring sub-area receive the clustering instruction, the capacity value of the cluster head in the monitoring sub-area where the sensor monitoring nodes can act is calculated according to the following formula:
in the formula, ApFor a sensor monitoring node p to be able to assume the capability value of the clusterhead in the sub-area it is monitoring, Eres(p) is the current residual energy value of the sensor monitoring node p, d (p, Sink) is the distance between the sensor monitoring node p and the base station equipment, and TcurrentFor the current ambient temperature value, T0(p) an ideal ambient temperature value required by the sensor to monitor the node p, epsilon is an ambient loss factor, NpNumber of sensor monitoring nodes in the monitoring sub-area where the sensor monitoring node p is located, E1Energy loss per unit time value, E, for the sensor monitoring node for communication2The energy loss value in each unit time is calculated and transmitted for the sensor monitoring node;
(3) and selecting the sensor monitoring node with the largest energy value in each monitoring sub-area as a cluster head, and adding the rest sensor monitoring nodes in the monitoring sub-area as cluster member nodes into the cluster to finally realize clustering.
2. The solar photovoltaic panel-based intelligent power supply system according to claim 1, wherein the sensor monitoring node comprises: one or more of a voltage sensor, a current sensor, a photosensitive sensor, a temperature sensor, a photovoltaic illuminance sensor.
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