CN105301404A

CN105301404A - Solar cell simulator used for photovoltaic grid-connected inverter detection

Info

Publication number: CN105301404A
Application number: CN201510782775.3A
Authority: CN
Inventors: 薛艳波; 范建国; 朱晓艳; 郎海涛; 牛辉
Original assignee: WEN COUNTY POWER SUPPLY CO Ltd; State Grid Corp of China SGCC
Current assignee: WEN COUNTY POWER SUPPLY CO Ltd; State Grid Corp of China SGCC
Priority date: 2015-11-16
Filing date: 2015-11-16
Publication date: 2016-02-03

Abstract

The invention relates to a middle-set-type intelligent high-voltage switch cabinet based on a field bus remote control technology. The middle-set-type intelligent high-voltage switch cabinet comprises a cabinet body, a cabinet door, a door opening sensor, a temperature sensor, a humidity sensor, a current sensor, a voltage sensor, an electric leakage protection sensor, a loudspeaker, a microphone, a video data collector and a field bus remote control device. The middle-set-type intelligent high-voltage switch cabinet has the advantages of high structural strength, good heat dissipation performance and good isolation performance among circuit members, and the operation stability of the circuit members in the switch cabinet is greatly improved; in addition, the operation condition data of circuit members in a power distribution cabinet can be collected at a long distance, instant information exchange and communication with onsite personnel of the switch cabinet can be carried out at a long distance, and all operations of the onsite personnel can be supervised and known, so that the scientificity and the accuracy of switch cabinet operation information collection and control are improved, and the operation stability and the management level of the switch cabinet are improved.

Description

A kind of solar cell simulator detected for photovoltaic combining inverter

Technical field

The present invention relates to a kind of solar cell simulator detected for photovoltaic combining inverter, belong to photovoltaic generation checkout equipment technical field.

Background technology

In parallel network power generation, photovoltaic DC-to-AC converter realizes the visual plant that photovoltaic generation and alternating current realize being incorporated into the power networks, therefore all need to carry out low frequency before photovoltaic DC-to-AC converter dispatches from the factory, overclocking, overvoltage, the detection test of numerous project such as under-voltage, and it is current when carrying out these projects and detecting, checkout equipment is needed to meet specific voltage required for every Detection of content except providing, outside the electric energy such as electric current export, another needs can according to the generating feature of photovoltaic power generation equipment, effectively the multiple operation conditions existed in photovoltaic generation is emulated, thus to improve photovoltaic DC-to-AC converter detection accuracy, and presently used photovoltaic DC-to-AC converter checkout equipment, its power supply is direct often to carry out rectification and converts direct current to and carry out driving or directly carry out the operation of drivings checkout equipment by direct supply by alternating current, although the electric energy that such power-supply device can meet required for every test item exports, but really cannot effectively emulate the operation of photovoltaic generating system is specific, therefore cause and with actual use, larger deviation is also existed to the detection data of photovoltaic DC-to-AC converter, effectively can not meet the needs of photovoltaic DC-to-AC converter checkout equipment, simultaneously, current when carrying out every Data Detection to photovoltaic DC-to-AC converter, checkout equipment often needs to consume a large amount of electric energy, and presently used all kinds of checkout equipment power supply and detection system all do not possess the ability through detecting post-job electric energy recovery utilization rate, therefore great electric energy loss is caused, considerably increase the operating cost of photovoltaic DC-to-AC converter testing, for this present situation, in the urgent need to developing a kind of high emulation and the solar cell analog simulation power supply that detects of the low photovoltaic DC-to-AC converter of operation energy consumption, with the needs that satisfied reality uses.

Summary of the invention

For the deficiency that prior art exists, the invention provides a kind of solar cell simulator detected for photovoltaic combining inverter, this invention integration degree is high, compact, antijamming capability is strong, multiple solar battery group duty can be simulated flexibly export, and export stable electric power and continuity good, separately can the electric energy exported be recycled, thus improve the analogue simulation performance of solar cell simulator on the one hand, also reduce solar cell simulator operation energy consumption on the other hand, contribute to the operating cost reducing solar cell simulator.

To achieve these goals, the present invention realizes by the following technical solutions:

For the solar cell simulator that photovoltaic combining inverter detects, comprise cabinet, DC simulation power supply, DC-to-DC translation circuit, filtering circuit, microcontroller circuit and output circuit, wherein DC simulation power supply, DC-to-DC translation circuit, filtering circuit, microcontroller circuit and output circuit are all positioned at cabinet inside, microcontroller circuit respectively with DC simulation power supply, DC-to-DC translation circuit and output circuit electrical connection, wherein DC simulation power supply is separately electrically connected by DC-to-DC translation circuit and output circuit input end, output circuit output terminal is connected with DC simulation power sourced electric by filtering circuit, DC simulation power supply comprises AC analogue electric network source and Inner eycle from net inverter, wherein Inner eycle is electrically connected with AC analogue electric network source and output circuit output terminal respectively from net inverter input terminal, Inner eycle is electrically connected from net inverter output end and DC-to-DC translation circuit, and output circuit comprises photovoltaic array IV simulator, output wiring terminal, wherein output wiring terminal input end and photovoltaic array IV simulator are electrically connected, output wiring terminal output terminal and Inner eycle are electrically connected from net inverter input terminal, output wiring terminal input end and output terminal all establish power analyzer and oscillograph, and microcontroller circuit comprises data processing module, data memory module, communication module, I/O module, operating key, display and driver module, wherein driver module respectively with data processing module, communication module, I/O module, DC-to-DC translation circuit, Inner eycle is from net inverter, power analyzer and oscillograph electrical connection, the another and data memory module of data processing module is electrically connected, and I/O module is electrically connected with operating key and display respectively, operating key, display and oscillograph are all embedded in cabinet outside surface, and communication module separately establishes PORT COM at cabinet outside surface.

Further, described communication module is any one or a few the combination in wireless communication apparatus, Industrial Ethernet communication device and carrier communication device.

Integration degree of the present invention is high, compact, antijamming capability is strong, multiple solar battery group duty can be simulated flexibly export, and export stable electric power and continuity good, separately can recycle the electric energy exported, thus improve on the one hand the analogue simulation performance of solar cell simulator, also reduce solar cell simulator operation energy consumption on the other hand, contribute to the operating cost reducing solar cell simulator.

Accompanying drawing explanation

The present invention is described in detail below in conjunction with the drawings and specific embodiments;

Fig. 1 is structural representation of the present invention;

Fig. 2 is that the present invention is electrically connected principle schematic;

Fig. 3 is microcontroller circuit electrical principle block diagram.

Embodiment

The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.

As Fig. 1, a kind of solar cell simulator detected for photovoltaic combining inverter described in 2 and 3, comprise cabinet 1, DC simulation power supply, DC-to-DC translation circuit, filtering circuit, microcontroller circuit and output circuit, wherein DC simulation power supply, DC-to-DC translation circuit, filtering circuit, it is inner that microcontroller circuit and output circuit are all positioned at cabinet 1, microcontroller circuit respectively with DC simulation power supply, DC-to-DC translation circuit and output circuit electrical connection, DC simulation power supply is separately electrically connected by DC-to-DC translation circuit and output circuit input end, output circuit output terminal is connected with DC simulation power sourced electric by filtering circuit.

In this enforcement, DC simulation power supply comprises AC analogue electric network source and Inner eycle from net inverter, wherein Inner eycle is electrically connected with AC analogue electric network source and output circuit output terminal respectively from net inverter input terminal, Inner eycle is electrically connected from net inverter output end and DC-to-DC translation circuit, output circuit comprises photovoltaic array IV simulator, output wiring terminal, wherein said output wiring terminal input end and photovoltaic array IV simulator are electrically connected, output wiring terminal output terminal and Inner eycle are electrically connected from net inverter input terminal, described output wiring terminal input end and output terminal all establish power analyzer and oscillograph 2.

In the present embodiment, described microcontroller circuit comprises data processing module, data memory module, communication module, I/O module, operating key 3, display 4 and driver module, wherein driver module respectively with data processing module, communication module, I/O module, DC-to-DC translation circuit, Inner eycle is from net inverter, power analyzer and oscillograph 2 are electrically connected, another and the data memory module of data processing module is electrically connected, I/O module is electrically connected with operating key 3 and display 4 respectively, operating key 3, display 4 and oscillograph 2 are all embedded in cabinet 1 outside surface, communication module separately establishes PORT COM 5 at cabinet 1 outside surface.

In the present embodiment, described communication module is any one or a few the combination in wireless communication apparatus, Industrial Ethernet communication device and carrier communication device.

More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims

1. the solar cell simulator detected for photovoltaic combining inverter, it is characterized in that: the described solar cell simulator for photovoltaic combining inverter detection comprises cabinet, DC simulation power supply, DC-to-DC translation circuit, filtering circuit, microcontroller circuit and output circuit, wherein said DC simulation power supply, DC-to-DC translation circuit, filtering circuit, microcontroller circuit and output circuit are all positioned at cabinet inside, described microcontroller circuit respectively with DC simulation power supply, DC-to-DC translation circuit and output circuit electrical connection, wherein DC simulation power supply is separately electrically connected by DC-to-DC translation circuit and output circuit input end, described output circuit output terminal is connected with DC simulation power sourced electric by filtering circuit, described DC simulation power supply comprises AC analogue electric network source and Inner eycle from net inverter, wherein said Inner eycle is electrically connected with AC analogue electric network source and output circuit output terminal respectively from net inverter input terminal, Inner eycle is electrically connected from net inverter output end and DC-to-DC translation circuit, described output circuit comprises photovoltaic array IV simulator, output wiring terminal, wherein said output wiring terminal input end and photovoltaic array IV simulator are electrically connected, output wiring terminal output terminal and Inner eycle are electrically connected from net inverter input terminal, described output wiring terminal input end and output terminal all establish power analyzer and oscillograph, described microcontroller circuit comprises data processing module, data memory module, communication module, I/O module, operating key, display and driver module, wherein said driver module respectively with data processing module, communication module, I/O module, DC-to-DC translation circuit, Inner eycle is from net inverter, power analyzer and oscillograph electrical connection, another and the data memory module of data processing module is electrically connected, described I/O module is electrically connected with operating key and display respectively, described operating key, display and oscillograph are all embedded in cabinet outside surface, described communication module separately establishes PORT COM at cabinet outside surface.

2. a kind of solar cell simulator detected for photovoltaic combining inverter according to claim 1, it is characterized in that, described communication module is any one or a few the combination in wireless communication apparatus, Industrial Ethernet communication device and carrier communication device.