CN211043614U

CN211043614U - Detection apparatus for photovoltaic power grid uses

Info

Publication number: CN211043614U
Application number: CN201921667091.9U
Authority: CN
Inventors: 任威; 叶满园; 高雅琦; 魏麒文
Original assignee: East China Jiaotong University
Current assignee: East China Jiaotong University
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-07-17
Anticipated expiration: 2029-10-08

Abstract

The utility model provides a detection apparatus that photovoltaic electric wire netting was used relates to detection areas such as electric power, electron. This detection device that photovoltaic electric wire netting was used, including panel, grid-connected inverter and detection device, the panel carries out electric connection through grid-connected inverter and electric wire netting, and bottom one side of panel is equipped with the electrode box, and the inner wall of electrode box is equipped with the insulating layer, and the inside top fixedly connected with electrode slice of electrode box, electrode slice are the recess form and set up, and the top of electrode slice extends to the upper surface of electrode box. This detection device that photovoltaic electric wire netting was used, through set up the socket in the bottom of electrode box, detection device passes through connecting wire and socket department and pegs graft, and the in-process of pegging graft, the inserted sheet expands the plectrum to make the plectrum slide along the slide rail, thereby realize the contact of plectrum and electrode piece, wholly realize the quick electric connection of detection device and electrode piece, expand fast and overhaul troubleshooting work, improve the efficiency of work greatly.

Description

Detection apparatus for photovoltaic power grid uses

Technical Field

The utility model relates to an electric power detects technical field, specifically is a detection device that photovoltaic electric wire netting was used.

Background

In a photovoltaic grid-connected power generation system, the phase and frequency of the grid voltage need to be detected in real time to control a grid-connected inverter, so that the output current of the grid-connected inverter is kept synchronous with the phase and frequency of the grid voltage, namely, synchronous phase locking, the control accuracy directly influences the grid-connected operation performance of the system, if a phase-locked loop circuit is unreliable, circulation current between the inverter and a grid can be generated in the grid-connected work switching of the inverter and the grid, the impact on equipment is caused, the service life of the equipment is shortened, and the equipment is damaged in severe cases.

Generally, photoelectric power generation system has a plurality of panels to splice, when overhauing the trouble to a plurality of panels, needs to carry out electric connection to the panel, looks for impaired panel fast, and present current technique is overhauld fastly and is hanged down, need dismantle the junction and expose the connection piece usually, and is inefficient, can't diagnose fast and detect, has certain drawback, to the not enough of current device, the utility model discloses a detection device that photovoltaic electric wire netting used.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a detection device that photovoltaic electric wire netting was used to solve the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a detection device that photovoltaic electric wire netting was used, includes panel, grid-connected inverter and detection device, the panel carries out electric connection through grid-connected inverter and electric wire netting, bottom one side of panel is equipped with the electrode box.

The inner wall of electrode box is equipped with the insulating layer, the inside top fixedly connected with electrode slice of electrode box, the electrode slice is the setting of recess form, the top of electrode slice extends to the upper surface of electrode box, the socket has been seted up to the bottom of electrode box and the position relative with the electrode slice, the inside activity of socket is pegged graft and is had the rubber buffer.

And a fastening bolt is arranged on one side of the electrode box, the threaded end of the fastening bolt penetrates through the outer surface of the electrode box and extends to the inner cavity of the electrode box, the threaded end of the fastening bolt is connected with a connecting piece bearing arranged in the inner cavity of the electrode box, and one side of the connecting piece is in contact with the electrode piece.

The electrode plate comprises an electrode plate and is characterized in that clamping grooves are transversely formed in two sides of the electrode plate, sliding rails are transversely arranged inside the clamping grooves, two ends of each sliding rail are fixedly connected with the inner wall of the electrode box respectively, a shifting piece is arranged on the inner wall of each sliding rail in a sliding mode, a telescopic rod is arranged on one side of each shifting piece and opposite to the inner wall of the electrode box, one end of each telescopic rod is fixedly connected with the inner wall of the electrode box, and the other end of each telescopic rod abuts against the corresponding shifting piece.

Preferably, the detection device comprises a voltmeter and a mobile power supply, the voltmeter is arranged on the upper surface of the mobile power supply, the voltmeter and the mobile power supply are arranged in parallel, and a switch is arranged between the voltmeter and the mobile power supply.

Preferably, the telescopic link includes sleeve, inserted bar and supporting spring, telescopic inner chamber and inserted bar activity cup joint, telescopic inner chamber and with the tip of inserted bar be equipped with supporting spring, supporting spring's one end and telescopic inner chamber fixed connection, supporting spring's the other end and the end fixing of inserted bar.

Preferably, the number of the poking pieces is two, the two poking pieces are symmetrically distributed about a vertical central axis of the sliding rail, and one sides of the two poking pieces, which are opposite to each other, are respectively abutted against the inner wall of the electrode box through the telescopic rod.

Preferably, the opening degree of the clamping groove is larger than the width of the sliding rail, and the sliding rail is not in contact with the inside of the clamping groove.

Preferably, a threaded rod hole is formed in one side of the electrode box and at the joint of the electrode box and the fastening bolt.

Preferably, the output end of the detection device is movably inserted into the socket through a connecting wire.

The utility model provides a detection apparatus for photovoltaic electric wire netting is used, its beneficial effect who possesses as follows:

1. this detection device that photovoltaic electric wire netting was used, through set up the socket in the bottom of electrode box, detection device passes through connecting wire and socket department and pegs graft, and the in-process of pegging graft, the inserted sheet expands the plectrum to make the plectrum slide along the slide rail, thereby realize the contact of plectrum and electrode piece, wholly realize the quick electric connection of detection device and electrode piece, expand fast and overhaul troubleshooting work, improve the efficiency of work greatly.

2. This detection device that photovoltaic electric wire netting was used sets up the telescopic link simultaneously, and the inner chamber of telescopic link is equipped with supporting spring, with the help of supporting spring's elasticity, when making the wire that its detection device connects and interface separation, the plectrum and electrode slice realize automatic re-setting.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the electrode box of the present invention;

FIG. 3 is a sectional view of the electrode case structure of the present invention;

fig. 4 is a schematic view of the electrode plate structure of the present invention;

fig. 5 is a cross-sectional view of the telescopic rod structure of the present invention.

In the figure: the device comprises a battery board 1, a grid-connected inverter 2, a detection device 3, a voltage meter 301, a mobile power supply 302, an electrode box 4, an insulating layer 5, an electrode plate 6, a socket 7, a rubber plug 8, a fastening bolt 9, a connecting sheet 10, a clamping groove 11, a sliding rail 12, a shifting sheet 13, a telescopic rod 14, a sleeve 141, an inserted rod 142 and a supporting spring 143.

Detailed Description

The embodiment of the utility model provides a detection device that photovoltaic electric wire netting was used, as shown in fig. 1-5, including panel 1, grid-connected inverter 2 and detection device 3, panel 1 carries out electric connection through grid-connected inverter 2 and electric wire netting, and bottom one side of panel 1 is equipped with electrode box 4.

The inner wall of electrode box 4 is equipped with insulating layer 5, and the inside top fixedly connected with electrode slice 6 of electrode box 4, electrode slice 6 are the recess form setting, and the top of electrode slice 6 extends to the upper surface of electrode box 4, and socket 7 has been seted up to the bottom of electrode box 4 and the position relative with electrode slice 6, and socket 7's inside activity is pegged graft and is had rubber buffer 8.

And a fastening bolt 9 is arranged on one side of the electrode box 4, the threaded end of the fastening bolt 9 penetrates through the outer surface of the electrode box 4 and extends to the inner cavity of the electrode box 4, the threaded end of the fastening bolt 9 is in bearing connection with a connecting piece 10 arranged in the inner cavity of the electrode box 4, and one side of the connecting piece 10 is in contact with the electrode plate 6.

Draw-in groove 11 has transversely been seted up to the both sides of electrode slice 6, and the inside of draw-in groove 11 transversely is equipped with slide rail 12, the both ends of slide rail 12 respectively with the inner wall fixed connection of electrode box 4, the inner wall of slide rail 12 slides and is equipped with plectrum 13, one side of plectrum 13 and the inner wall relative position of electrode box 4 be equipped with telescopic link 14, the one end of telescopic link 14 and the inner wall fixed connection of electrode box 4, the other end and the plectrum 13 counterbalance of telescopic link 14.

Further, the detection device 3 includes a voltmeter 301 and a mobile power supply 302, the voltmeter 301 is disposed on the upper surface of the mobile power supply 302, the voltmeter 301 is disposed in parallel with the mobile power supply 302, a switch is disposed between the voltmeter 301 and the mobile power supply 302, the voltmeter 301 observes the change of the overall voltage at the connection, and the mobile power supply 302 provides an electric support for the whole monitoring system.

Further, the telescopic rod 14 includes a sleeve 141, an insertion rod 142 and a supporting spring 143, an inner cavity of the sleeve 141 is movably sleeved with the insertion rod 142, the supporting spring 143 is disposed in the inner cavity of the sleeve 141 and at an end of the insertion rod 142, one end of the supporting spring 143 is fixedly connected with the inner cavity of the sleeve 141, and the other end of the supporting spring 143 is fixed to an end of the insertion rod 142.

Further, the number of plectrum 13 is two, and two plectrums 13 are respectively about the vertical axis symmetric distribution of slide rail 12, and the back of the body one side of two plectrums 13 offsets with the inner wall of electrode box 4 through telescopic link 14 respectively.

Further, the opening degree of the clamping groove 11 is larger than the width of the slide rail 12, and the slide rail 12 is not in contact with the inside of the clamping groove 11, so that the slide rail 12 is ensured not to be in electrical contact with the electrode plate 6.

Furthermore, a threaded rod hole is formed in one side of the electrode box 4 and the joint of the electrode box and the fastening bolt 9, the fastening bolt 9 is connected with the electrode box 4, and the fastening bolt 9 is rotated to ensure that the connecting sheet 10 is in contact with the electrode sheet 6.

Furthermore, the output end of the detection device 3 is movably inserted into the socket 7 through a connecting wire, so that the quick connection of the battery panel 1 is realized.

The working principle is as follows: the device is in the use, at first, be connected output port on its detection device 3 with electrode box 4 through the wire, open rubber buffer 8, and expose plectrum 13, the in-process of pegging graft, the plectrum expands plectrum 13, and make plectrum 13 slide along slide rail 12, thereby realize plectrum 13 and electrode slice 6's contact, wholly realize the quick electric connection of detection device 3 with electrode slice 6, then start the electrical property switch on the detection device 3, the quick maintenance investigation work that expandes.

By observing the change of the pointer of the voltmeter 301, if the pointer of the voltmeter 301 deflects, the inside of the battery panel 1 is normal, no fault exists at the contact position, and if the pointer of the voltmeter 301 does not deflect, the back of the battery panel 1 is open-circuited.

After the inspection is finished, the plugging and plugging of the residual sockets 7 of the rubber plug 8 are realized.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a detection device that photovoltaic electric wire netting was used, includes panel (1), grid-connected inverter (2) and detection device (3), its characterized in that: the solar panel (1) is electrically connected with a power grid through a grid-connected inverter (2), and one side of the bottom of the solar panel (1) is provided with an electrode box (4);

an insulating layer (5) is arranged on the inner wall of the electrode box (4), an electrode plate (6) is fixedly connected to the top of the interior of the electrode box (4), the electrode plate (6) is arranged in a groove shape, the top of the electrode plate (6) extends to the upper surface of the electrode box (4), a socket (7) is formed in the bottom of the electrode box (4) and in the position opposite to the electrode plate (6), and a rubber plug (8) is movably inserted into the interior of the socket (7);

a fastening bolt (9) is arranged on one side of the electrode box (4), the threaded end of the fastening bolt (9) penetrates through the outer surface of the electrode box (4) and extends to the inner cavity of the electrode box (4), the threaded end of the fastening bolt (9) is in bearing connection with a connecting piece (10) arranged in the inner cavity of the electrode box (4), and one side of the connecting piece (10) is in contact with the electrode plate (6);

draw-in groove (11) have transversely been seted up to the both sides of electrode slice (6), the inside of draw-in groove (11) transversely is equipped with slide rail (12), the both ends of slide rail (12) respectively with the inner wall fixed connection of electrode box (4), the inner wall slip of slide rail (12) is equipped with plectrum (13), one side of plectrum (13) is equipped with telescopic link (14) with the inner wall department of electrode box (4), the one end of telescopic link (14) and the inner wall fixed connection of electrode box (4), the other end and the plectrum (13) of telescopic link (14) offset.

2. A detection device for a photovoltaic grid according to claim 1, characterized in that: the detection device (3) comprises a voltmeter (301) and a mobile power supply (302), the voltmeter (301) is arranged on the upper surface of the mobile power supply (302), the voltmeter (301) and the mobile power supply (302) are arranged in parallel, and a switch is arranged between the voltmeter (301) and the mobile power supply (302).

3. A detection device for a photovoltaic grid according to claim 1, characterized in that: the telescopic rod (14) comprises a sleeve (141), an inserted bar (142) and a supporting spring (143), the inner cavity of the sleeve (141) is movably sleeved with the inserted bar (142), the supporting spring (143) is arranged in the inner cavity of the sleeve (141) and at the end part of the inserted bar (142), one end of the supporting spring (143) is fixedly connected with the inner cavity of the sleeve (141), and the other end of the supporting spring (143) is fixed with the end part of the inserted bar (142).

4. A detection device for a photovoltaic grid according to claim 1, characterized in that: the number of the poking pieces (13) is two, the two poking pieces (13) are symmetrically distributed about a vertical central axis of the sliding rail (12), and one sides of the two poking pieces (13) which are opposite to each other are respectively abutted against the inner wall of the electrode box (4) through the telescopic rod (14).

5. A detection device for a photovoltaic grid according to claim 1, characterized in that: the opening degree of the clamping groove (11) is larger than the width of the sliding rail (12), and the sliding rail (12) is not in contact with the inside of the clamping groove (11).

6. A detection device for a photovoltaic grid according to claim 1, characterized in that: a threaded rod hole is formed in one side of the electrode box (4) and at the joint of the electrode box and the fastening bolt (9).

7. A detection device for a photovoltaic grid according to claim 1, characterized in that: the output end of the detection device (3) is movably inserted into the socket (7) through a connecting wire.