WO2015169135A1 - 抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器 - Google Patents

抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器 Download PDF

Info

Publication number
WO2015169135A1
WO2015169135A1 PCT/CN2015/075841 CN2015075841W WO2015169135A1 WO 2015169135 A1 WO2015169135 A1 WO 2015169135A1 CN 2015075841 W CN2015075841 W CN 2015075841W WO 2015169135 A1 WO2015169135 A1 WO 2015169135A1
Authority
WO
WIPO (PCT)
Prior art keywords
photovoltaic
diode
ground
pid
power generation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/075841
Other languages
English (en)
French (fr)
Inventor
邹海晏
张建
陶磊
余鸿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sungrow Power Supply Co Ltd
Original Assignee
Sungrow Power Supply Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sungrow Power Supply Co Ltd filed Critical Sungrow Power Supply Co Ltd
Publication of WO2015169135A1 publication Critical patent/WO2015169135A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/32—Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to the field of photovoltaic power generation technology, and more particularly to a potential potential induced attenuation PID photovoltaic power generation system, an anti-PID photovoltaic module, and an anti-PID inverter.
  • the PID (potential induced decay) effect refers to the phenomenon that the potential high voltage between the live part of the photovoltaic module, the grounding frame or the grounded external part causes a large attenuation of the working efficiency of the photovoltaic module.
  • the most common method is to ground the PV module.
  • the application of the method is likely to cause a circulation of the photovoltaic power generation system, thereby threatening the normal operation of the system.
  • the present invention provides an anti-PID photovoltaic power generation system, an anti-PID photovoltaic component, and an anti-PID inverter to ensure stable reliability and anti-PID characteristics of the photovoltaic power generation system.
  • An anti-PID photovoltaic power generation system includes: a photovoltaic module, an inverter connected to the photovoltaic module, and a diode connected to one end of the photovoltaic module and having the other end connected to the electrode of the photovoltaic module.
  • the photovoltaic component is a photovoltaic component that requires no negative bias of the negative electrode to the ground
  • the diode anode is grounded and the cathode is connected to the negative electrode of the photovoltaic component.
  • the photovoltaic component is a photovoltaic component that does not have a negative bias voltage from the positive electrode to the ground
  • the pole anode is grounded and the cathode is connected to the anode of the photovoltaic module.
  • the diode cathode is grounded and the anode is connected to the negative electrode of the photovoltaic component.
  • the diode cathode is grounded and the anode is connected to the positive electrode of the photovoltaic component.
  • the method further includes: a resistor connected between the electrode of the photovoltaic component and the diode, or a resistor connected between the diode and the ground.
  • the method further includes: a positive electrode connected to the negative electrode of the photovoltaic component, a negative electrode connected to a cathode of the diode, or a positive electrode The voltage source of the anode and the negative pole of the diode is grounded.
  • the method further includes: a positive electrode connected to the positive electrode of the photovoltaic component, a negative electrode connected to a cathode of the diode, or a positive electrode The voltage source of the anode and the negative pole of the diode is grounded.
  • the photovoltaic component is a photovoltaic component that does not have a positive bias to the ground
  • the negative electrode is connected to the negative electrode of the photovoltaic component
  • the positive electrode is connected to the anode of the diode, or the negative electrode is connected.
  • the voltage source of the cathode and anode of the diode is grounded.
  • the photovoltaic component is a photovoltaic component that does not have a positive bias to the ground
  • the negative electrode is connected to the positive electrode of the photovoltaic component
  • the positive electrode is connected to the anode of the diode, or the negative electrode is connected.
  • the voltage source of the cathode and anode of the diode is grounded.
  • An anti-PID photovoltaic module comprising a photovoltaic component and a diode with one end grounded and the other end connected to the electrode of the photovoltaic component.
  • An anti-PID inverter includes an inverter and a diode whose one end is grounded and the other end is connected to an electrode input end of the inverter.
  • the present invention integrates the existing photovoltaic module in the photovoltaic power generation system through the diode. Since the diode has unidirectional conductivity, it can not only block the circulation which may occur in the photovoltaic power generation system, but also The ground potential of each of the photovoltaic modules can be clamped to a preset value, thereby ensuring stable reliability and anti-PID characteristics of the photovoltaic power generation system.
  • FIG. 1a-1b are schematic structural views of a photovoltaic power generation system in which a negative electrode of a type 1 photovoltaic module is grounded according to the prior art;
  • FIGS. 2a-2b are schematic structural views of a class 1 anti-PID photovoltaic power generation system disclosed in Embodiment 1 of the present invention.
  • 3a-3b are schematic structural views of a Class 1 anti-PID photovoltaic power generation system with a resistor according to Embodiment 1 of the present invention
  • 4a-4b are schematic structural views of a Class 1 anti-PID photovoltaic power generation system with a voltage source according to Embodiment 1 of the present invention
  • 5a-5b are schematic structural diagrams of a class 2 anti-PID photovoltaic power generation system disclosed in Embodiment 2 of the present invention.
  • 6a-6b are schematic structural views of a type 2 anti-PID photovoltaic power generation system with a resistor according to Embodiment 2 of the present invention.
  • FIG. 7a-7b are schematic structural views of a class 2 anti-PID photovoltaic power generation system with a voltage source according to Embodiment 2 of the present invention.
  • FIGS. 8a-8b are schematic structural diagrams of a class 3 anti-PID photovoltaic power generation system disclosed in Embodiment 3 of the present invention.
  • 9a-9b are schematic structural views of a three-type anti-PID photovoltaic power generation system with a resistor according to Embodiment 3 of the present invention.
  • 10a-10b are schematic diagrams showing the structure of a class 3 anti-PID photovoltaic power generation system with a voltage source according to a third embodiment of the present invention.
  • 11a-11b are schematic structural views of a four-type anti-PID photovoltaic power generation system disclosed in Embodiment 4 of the present invention.
  • FIGS. 12a-12b are schematic structural views of a four-type anti-PID photovoltaic power generation system with a resistor according to Embodiment 4 of the present invention.
  • 13a-13b are schematic diagrams showing the structure of a class 4 anti-PID photovoltaic power generation system with a voltage source according to Embodiment 4 of the present invention.
  • PV modules with different production processes need to meet different requirements when avoiding PID effect: some PV modules require that the anode does not have a negative bias to the ground, and some PV modules require that the anode does not have a negative bias to ground, and some PV modules require The negative electrode has no positive bias to ground, and some photovoltaic modules require that the positive electrode has no positive bias to ground.
  • the above four types of photovoltaic modules are sequentially classified into a type 1 photovoltaic module, a class 2 photovoltaic module, a class 3 photovoltaic module, and a class 4 photovoltaic module.
  • PV1 anti-PID requirement is satisfied because the anode of the PV1 is grounded to ensure zero bias of the anode to ground;
  • an anti-PID photovoltaic power generation system which comprises: a photovoltaic component, an inverter connected to the photovoltaic component, and one end grounded and the other end connected to the photovoltaic component The diode of the electrode.
  • the anti-PID photovoltaic power generation system can directly utilize the unidirectional conductivity of the diode to block the circulation that may occur in the system, thereby ensuring the stability and reliability of the system; and simultaneously utilizing the unidirectional conductivity of the diode
  • the ground potential of the photovoltaic module is clamped to a preset value (ignoring the tube voltage drop), thereby ensuring the anti-PID characteristic of the system, and solving the problems existing in the prior art.
  • the present invention is directed to a photovoltaic power generation system using 1, 2, 3, and 4 types of photovoltaic modules as power sources, and correspondingly disclosed in the first, second, third, and fourth embodiments.
  • Class 1, 2, 3, and 4 anti-PID photovoltaic power generation systems are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the reality of the present invention All other embodiments obtained by a person of ordinary skill in the art without creative efforts are within the scope of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a class 1 anti-PID photovoltaic power generation system disclosed in the first embodiment includes: a type 1 photovoltaic module PV1, an inverter connected to a type 1 photovoltaic module PV1, and an anode grounded, cathode connected type 1 photovoltaic component. Diode VD of the negative pole of PV1.
  • PV1 when a single type PV module PV1 equipped with a diode VD is independently connected to the grid through the inverter, since the VD anode is grounded, the VD will clamp the negative pole of the PV1 to the ground potential by using unidirectional conductivity. At this time, PV1 has good anti-PID characteristics due to the negative bias of the negative electrode to ground.
  • Photovoltaic module PV1.2 is taken as an example.
  • VD2 When the output voltage of PV1.1 is higher than PV1.2, the unidirectional conductivity of VD2 blocks the circulating current CI formed between the ground GND1 and the ground GND2; meanwhile, due to the VD1 anode Grounded and in the on state, VD1 can use the unidirectional conductivity to clamp the negative pole of PV1.1 to the ground zero potential, that is, the negative pole of PV1.1 is biased to ground zero; since the VD2 anode is grounded and is in the off state, Therefore, VD2 can use unidirectional conductivity to raise the negative electrode of PV1.2 to the forward voltage to ground, that is, the negative electrode of PV1.2 is positively biased to ground; at this time, PV1.1 and PV1.2 do not meet the ground due to the negative electrode.
  • the negative bias requires good anti-PID characteristics.
  • the class 1 anti-PID photovoltaic power generation system shown in FIG. 2a may further include: connecting the negative electrode of the PV1 and the cathode of the VD. Resistor R; at this time, PV1 still maintains the negative-to-ground zero bias state.
  • the class 1 anti-PID photovoltaic power generation system shown in FIG. 2b further includes: a resistor R1 connected between PV1.1 and VD1 and a resistor R2 connected between PV1.2 and VD2; PV1.1 still maintains the negative-to-ground zero-bias state, and PV1.2 still maintains the negative-to-ground positive bias state.
  • the class 1 anti-PID photovoltaic power generation system shown in FIG. 2a may further include: a positive electrode connected to the negative electrode of PV1 and a negative electrode connected to VD.
  • the voltage source U S of the cathode; at this time, the PV1 cathode is positively biased to ground.
  • the type 1 anti-PID photovoltaic power generation system shown in FIG. 2b further includes: a negative electrode connected to the negative electrode of PV1.1, a voltage source U S1 of the cathode connected to the negative electrode of VD1, and a negative electrode connected to the positive electrode of PV1.2.
  • the negative electrode is connected to the voltage source U S2 of the cathode of VD2; at this time, both PV1.1 and PV1.2 are positively biased to ground.
  • the cathode of the type 1 photovoltaic module is connected to the cathode of the diode, and the anode of the diode is grounded, and a plurality of type 1 photovoltaic modules configured with the diode are commonly communicated through the inverter.
  • the diode can be disconnected from the circulating current due to the unidirectional conductivity, and the negative electrode of the Class 1 photovoltaic module with a higher output voltage is clamped to the zero potential of the ground, and the negative electrode of the type 1 photovoltaic module with a lower output voltage is lifted. It is a forward voltage to ground, thus ensuring the system's stable reliability and anti-PID characteristics.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a type 2 anti-PID photovoltaic power generation system disclosed in the second embodiment includes: a type 2 photovoltaic module PV2, an inverter connected to a type 2 photovoltaic module PV2, and an anode grounding and cathode connection type 2 photovoltaic module. Diode VD of the anode of PV2.
  • VD When a single type of PV module PV2 configured with a diode VD is independently connected to the grid through an inverter, the presence of VD causes the PV2 anode to be zero biased to ground.
  • Photovoltaic module PV2.2 is taken as an example.
  • the output voltage of PV2.1 is higher than PV2.2, the presence of VD1 and VD2 can cut off the circulating current and make the positive electrode of PV2.1 positively biased to ground, and the positive electrode of PV2.2. Ground zero bias.
  • the class 2 anti-PID photovoltaic power generation system shown in FIG. 5a further includes: a cathode connected between the cathode of the PV2 and the cathode of the VD. Resistor R; at this time, PV2 maintains a positive-to-ground zero bias state.
  • the type 2 anti-PID photovoltaic power generation system shown in FIG. 5b further includes: a resistor R1 connected between PV2.1 and VD1 and a resistor R2 connected between PV2.2 and VD2; PV2.1 maintains the positive pole to ground positive bias state, and PV2.2 maintains the positive pole to ground zero bias state.
  • the class 2 anti-PID photovoltaic power generation system shown in FIG. 5a may further include: a positive electrode connected to the positive electrode of the PV2 and a negative electrode connected to the VD.
  • the voltage source U S of the cathode; at this time, the positive electrode of PV2 is positively biased to ground.
  • FIG. 7b the type 2 anti-PID photovoltaic power generation system shown in FIG.
  • 5b further includes: a positive electrode connected to the positive electrode of PV2.1, a negative electrode connected to the cathode of VD1, a voltage source U S1 , and a positive electrode connected to the positive electrode of PV2.2.
  • the negative electrode is connected to the voltage source U S2 of the cathode of VD2; at this time, PV2.1 and PV2.2 are still positively biased to ground.
  • the cathode of the type 2 photovoltaic module is connected to the cathode of the diode, and the anode of the diode is grounded, and when a plurality of types of photovoltaic modules configured with the diode are connected through the inverter.
  • the diode has unidirectional conductivity, the current can be disconnected, and the positive electrode of the 2 types of photovoltaic modules with lower output voltage is clamped to the ground potential zero, and the positive electrode of the 2 types of photovoltaic modules with lower output voltage is raised. It is a forward voltage to ground, thus ensuring the system's stable reliability and anti-PID characteristics.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • a three-type anti-PID photovoltaic power generation system disclosed in the third embodiment includes: a PV module of the third type, a PV3, an inverter connected to the PV module of the third type, and a cathode of the third type. Diode VD of the negative electrode of PV3.
  • PV3 has good anti-PID characteristics due to the negative bias of the negative electrode to ground.
  • PV3.2 When multiple PV modules of the type 3 PV3 configured with diode VD pass through the common AC side of the inverter, as shown in Figure 8b (with two types of PV modules PV3.1 and 3, respectively configured with diode VD1 and diode VD2) PV3.2 is taken as an example.
  • the output voltage of PV3.1 is higher than PV3.2, the unidirectional conductivity of VD1 and VD2 makes it impossible to form a circulating current CI between the ground GND1 and the ground GND2.
  • VD1 cathode is grounded and is in the off state. Therefore, VD1 can pull the negative pole of PV3.1 to the ground reverse potential by unidirectional conductivity, that is, the negative pole of PV3.1 is negatively biased to ground, because the VD2 cathode is grounded and is conducting.
  • VD2 can use unidirectional conductivity to clamp the negative pole of PV3.2 to ground zero potential, that is, the negative pole of PV3.2 is biased to ground zero; at this time, PV3.1 and PV3.2 meet the negative pole to ground It has good anti-PID characteristics without the requirement of positive bias.
  • the class 3 anti-PID photovoltaic power generation system shown in FIG. 8a may further include: a negative electrode connected to the PV3 and The resistance R between the anodes of the diodes VD; at this time, the PV3 still maintains the negative-to-ground zero bias state.
  • the class 3 anti-PID photovoltaic power generation system shown in FIG. 8b further includes: a resistor R1 connected between PV3.1 and VD1 and a resistor R2 connected between PV3.2 and VD2; PV3.1 still maintains the negative bias state of the negative pole to ground, and PV3.2 maintains the negative bias state of the negative pole to ground.
  • the class 3 anti-PID photovoltaic power generation system shown in FIG. 8a may further include: a negative electrode connected to the negative electrode of the PV3 and a positive electrode connected to the VD.
  • the voltage source U S of the anode; at this time, the negative electrode of PV3 is negatively biased to ground.
  • the three types of anti-PID photovoltaic power generation system shown in FIG. 8b further includes: a negative electrode connected to the anode of PV3.1, a voltage source U S1 of the anode of the positive electrode connected to the diode VD1, and a negative electrode of the negative electrode connected to the PV3.2.
  • the positive electrode is connected to the voltage source U S2 of the anode of the diode VD2; at this time, both PV3.1 and PV3.2 are negatively biased to the ground.
  • the anode of the three types of photovoltaic modules is connected to the anode of the diode, and the cathode of the diode is grounded, and the three types of photovoltaic modules configured with the diodes are commonly communicated through the inverter.
  • the diode has unidirectional conductivity, the current can be disconnected, and the negative electrode of the third-type PV module with higher output voltage is pulled down to the reverse voltage of the ground, and the negative electrode of the three types of photovoltaic modules with lower output voltage is clamped.
  • the ground potential is zero, thus ensuring the system's stable reliability and anti-PID characteristics.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • a four-type anti-PID photovoltaic power generation system disclosed in the fourth embodiment includes: a PV module of the fourth type, a PV4, an inverter connected to the PV module of the fourth type, and a cathode of the fourth type. Diode VD of the anode of PV4.
  • Photovoltaic module PV4.2 is taken as an example.
  • the output voltage of PV4.1 is higher than PV4.2, the presence of VD1 and VD2 can block the circulating current and clamp the positive electrode of PV4.1 to zero potential to ground, and PV4. The positive pole of 2 is pulled down to the ground potential.
  • the class 4 anti-PID photovoltaic power generation system shown in FIG. 11a may further include: connecting between the positive electrode of the PV4 and the anode of the diode VD. Resistor R; at this time, PV4 still maintains a positive-to-ground zero bias state.
  • FIG. 12b the four types of anti-PID photovoltaic power generation system shown in FIG.
  • 11b further includes: a resistor R1 connected between PV4.1 and VD1 and a resistor R2 connected between PV4.2 and VD2; PV4.1 still maintains the positive-to-ground zero-bias state, and PV4.2 still maintains the positive-to-ground negative bias state.
  • the Class 4 anti-PID photovoltaic power generation system shown in FIG. 11a may further include: a cathode connected to the anode of the negative electrode and an anode connected to the VD of the positive electrode. Voltage source U S ; at this time, the negative electrode of PV4 is negatively biased to ground.
  • 11b further includes: a positive electrode connected to the positive electrode of PV4.1, a positive electrode connected to the anode of the diode VD1, a voltage source U S1 , and a positive electrode connected to the positive electrode of the PV4.2.
  • the positive electrode is connected to the voltage source U S2 of the anode of the diode VD2; at this time, both PV4.1 and PV4.2 are negatively biased to the ground.
  • the anode of the four types of photovoltaic modules is connected to the anode of the diode, and the cathode of the diode is grounded, and the plurality of types of photovoltaic modules configured with the diodes are commonly communicated through the inverter.
  • the diode On the side, the diode has unidirectional conductivity to disconnect the loop, and the anode of the 4 types of PV modules with lower output voltage is pulled down to the reverse voltage of the ground, and the positive pole of the 4 types of PV modules with higher output voltage is clamped.
  • the ground potential is zero, thus ensuring the system's stable reliability and anti-PID characteristics.
  • the present invention also discloses an anti-PID photovoltaic component, comprising a photovoltaic component and a diode with one end grounded and the other end connected to the electrode of the photovoltaic component; and an anti-PID inverter including an inverter and one end grounded, The other end is connected to the diode of the power supply input of the inverter.
  • the photovoltaic power generation system using the anti-PID photovoltaic module or the anti-PID inverter has good stability reliability and anti-PID characteristics, and its working principle is consistent with the anti-PID photovoltaic power generation system disclosed in the present invention, and is no longer here. One by one.
  • the present invention connects the existing photovoltaic module to the ground through the diode, and utilizes the one-way of the diode.
  • Conductivity blocks the circulation that may occur in the photovoltaic power generation system, ensuring the stability and reliability of the system.
  • the unidirectional conductivity of the diode is used to clamp the ground potential of the PV module to a preset value, which ensures the anti-PID of the system. characteristic.
  • the present invention can also add some auxiliary electronic devices between the photovoltaic module and the diode to achieve additional beneficial effects, such as resistance for limiting the short-circuit current when the photovoltaic module is short-circuited to the ground, for the existing potential.
  • the voltage source for inducing the attenuation of the photovoltaic module for discharge recovery, the DC fuse for preventing the photovoltaic module from short-circuiting to the ground, or the current sensor for detecting the leakage current of the photovoltaic module to the ground, and the like are not limited.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)
  • Inverter Devices (AREA)

Abstract

一种抗潜在电势诱导衰减PID光伏发电系统，包括光伏组件（PV1）和与所述光伏组件（PV1）相连的逆变器，还包括：一端接地、另一端接所述光伏组件的电极的二极管（VD），以保证所述光伏发电系统的稳定可靠性和抗PID特性。此外，还包括一种抗PID光伏组件（PV1）和一种抗PID逆变器。

Description

抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器
本申请要求于2014年5月9日提交中国专利局、申请号为201410196200.9、发明名称为“抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及光伏发电技术领域，更具体地说，涉及一种抗潜在电势诱导衰减PID光伏发电系统、抗PID光伏组件和抗PID逆变器。
背景技术
PID(potential Induced Degradation，潜在电势诱导衰减)效应，是指光伏组件的带电部分、接地边框或接地外部之间的潜在高电压引发光伏组件工作效率大幅衰减的现象。
为避免PID效应，最常用的方法就是将光伏组件接地。但是，当光伏发电系统中的多台同类光伏组件通过逆变器共交流侧时，该方法的应用却容易导致所述光伏发电系统出现环流，从而威胁到系统的正常运行。
因此，如何保证所述光伏发电系统的稳定可靠性及抗PID特性，成为本领域技术人员亟待解决的问题。
发明内容
有鉴于此，本发明提供一种抗PID光伏发电系统、抗PID光伏组件和抗PID逆变器，以保证光伏发电系统的稳定可靠性和抗PID特性。
一种抗PID光伏发电系统，包括：光伏组件、与所述光伏组件相连的逆变器，以及一端接地、另一端与所述光伏组件的电极相连接的二极管。
其中，当所述光伏组件为要求负极对地没有负偏压的光伏组件时，所述二极管阳极接地、阴极接所述光伏组件的负极。
其中，当所述光伏组件为要求正极对地没有负偏压的光伏组件时，所述二 极管阳极接地、阴极接所述光伏组件的正极。
其中，当所述光伏组件为要求负极对地没有正偏压的光伏组件时，所述二极管阴极接地、阳极接所述光伏组件的负极。
其中，当所述光伏组件为要求正极对地没有正偏压的光伏组件时，所述二极管阴极接地、阳极接所述光伏组件的正极。
可选地，还包括：连接于所述光伏组件的电极和所述二极管之间的电阻，或者连接在所述二极管和地之间的电阻。
可选地，当所述光伏组件为要求负极对地没有负偏压的光伏组件时，还包括：正极接所述光伏组件的负极、负极接所述二极管的阴极的电压源，或者正极接所述二极管的阳极、负极接地的电压源。
可选地，当所述光伏组件为要求正极对地没有负偏压的光伏组件时，还包括：正极接所述光伏组件的正极、负极接所述二极管的阴极的电压源，或者正极接所述二极管的阳极、负极接地的电压源。
可选地，当所述光伏组件为要求负极对地没有正偏压的光伏组件时，还包括：负极接所述光伏组件的负极、正极接所述二极管的阳极的电压源，或者负极接所述二极管的阴极、正极接地的电压源。
可选地，当所述光伏组件为要求正极对地没有正偏压的光伏组件时，还包括：负极接所述光伏组件的正极、正极接所述二极管的阳极的电压源，或者负极接所述二极管的阴极、正极接地的电压源。
一种抗PID光伏组件，包括光伏组件和一端接地、另一端接所述光伏组件的电极的二极管。
一种抗PID逆变器，包括逆变器和一端接地、另一端接所述逆变器的电极输入端的二极管。
从上述的技术方案可以看出，本发明将光伏发电系统中现有的光伏组件通过二极管接地，由于二极管具有单向导电性，因此不仅可阻断所述光伏发电系统中可能出现的环流，还可将各个所述光伏组件的对地电位钳制至预设值，从而保证了所述光伏发电系统的稳定可靠性和抗PID特性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1a-1b为现有技术公开的1类光伏组件负极接地的光伏发电系统结构示意图；
图2a-2b为本发明实施例一公开的1类抗PID光伏发电系统结构示意图；
图3a-3b为本发明实施例一公开的带电阻的1类抗PID光伏发电系统结构示意图；
图4a-4b为本发明实施例一公开的带电压源的1类抗PID光伏发电系统结构示意图；
图5a-5b为本发明实施例二公开的2类抗PID光伏发电系统结构示意图；
图6a-6b为本发明实施例二公开的带电阻的2类抗PID光伏发电系统结构示意图；
图7a-7b为本发明实施例二公开的带电压源的2类抗PID光伏发电系统结构示意图；
图8a-8b为本发明实施例三公开的3类抗PID光伏发电系统结构示意图；
图9a-9b为本发明实施例三公开的带电阻的3类抗PID光伏发电系统结构示意图；
图10a-10b为本发明实施例三公开的带电压源3类抗PID光伏发电系统结构示意图；
图11a-11b为本发明实施例四公开的4类抗PID光伏发电系统结构示意图；
图12a-12b为本发明实施例四公开的带电阻的4类抗PID光伏发电系统结构示意图；
图13a-13b为本发明实施例四公开的带电压源的4类抗PID光伏发电系统结构示意图。
具体实施方式
具有不同生产工艺的光伏组件在避免PID效应时所需满足的要求不同：有的光伏组件要求负极对地没有负偏压，有的光伏组件要求正极对地没有负偏压，有的光伏组件要求负极对地没有正偏压，有的光伏组件要求正极对地没有正偏压。为便于描述，记上述4类光伏组件依次为1类光伏组件、2类光伏组件、3类光伏组件和4类光伏组件。
虽然将光伏组件接地可有效避免PID效应，提高光伏发电系统的抗PID特性。但是，该方法仅适用于1台光伏组件通过逆变器独立并网运行的光伏发电系统，而不能适用于多台同类光伏组件通过逆变器共交流侧的光伏发电系统，因而在应用场合上存在很大的局限性。以1类光伏组件为例：
参见图1a，当1台1类光伏组件PV1通过逆变器独立并网运行时，由于将PV1负极接地后可保证其负极对地零偏压，因而满足了PV1的抗PID要求；
但是，当多台1类光伏组件通过逆变器共交流侧时，该方法却存在一定风险；如图1b所示，当1类光伏组件PV1.1和PV1.2的负极均接地时，若PV1.1的输出电压相较于PV1.2较高，则在地极GND1和GND2之间就会形成很大的环流CI，威胁到系统的稳定可靠性。
本发明为克服现有方案的局限性，特别公开了一种抗PID光伏发电系统，它包括：光伏组件、与所述光伏组件相连的逆变器，以及一端接地、另一端接所述光伏组件的电极的二极管。所述抗PID光伏发电系统能够直接利用所述二极管的单向导电性阻断系统中可能出现的环流，从而保证了系统的稳定可靠性；同时还能够直接利用所述二极管的单向导电性将所述光伏组件的对地电位钳制至预设值(忽略管压降)，从而保证了系统的抗PID特性，解决了现有技术存在的问题。
为便于本领域技术人员容易理解并实施本方案，本发明分别针对以1、2、3、4类光伏组件作为发电源的光伏发电系统，对应公开了实施例一、二、三、四所述的1、2、3、4类抗PID光伏发电系统。下面结合本发明各实施例中的附图，对本发明各实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实 施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一：
参见图2a，本实施例一公开的一种1类抗PID光伏发电系统，包括：1类光伏组件PV1、与1类光伏组件PV1相连的逆变器，以及阳极接地、阴极接1类光伏组件PV1的负极的二极管VD。
分析可知，当单个配置有二极管VD的1类光伏组件PV1通过逆变器独立并网运行时，由于VD阳极接地，因此VD会利用单向导电性将PV1的负极钳位至对地零电位，此时PV1因负极对地零偏压而具备了良好的抗PID特性。
当多个配置有二极管VD的1类光伏组件PV1通过逆变器共交流侧时，如图2b所示(以2个分别配置有二极管VD1和二极管VD2的1类光伏组件PV1.1和1类光伏组件PV1.2为例)，当PV1.1的输出电压高于PV1.2时，VD2的单向导电性阻断地极GND1和地极GND2之间形成的环流CI；同时，由于VD1阳极接地且处于导通状态，因此VD1可利用单向导电性将PV1.1的负极钳位至对地零电位，即令PV1.1的负极对地零偏压；由于VD2阳极接地且处于截止状态，因此VD2可利用单向导电性将PV1.2的负极上抬为对地正向电压，即令PV1.2的负极对地正偏压；此时PV1.1和PV1.2因满足负极对地没有负偏压的要求而具备了良好的抗PID特性。
作为优选，参见图3a，为限制1类光伏组件PV1正极对地短路时的短路电流，图2a所示的1类抗PID光伏发电系统还可包括：连接于PV1的负极和VD的阴极之间的电阻R；此时PV1仍保持负极对地零偏压状态。
对应的，参见图3b，图2b所示的1类抗PID光伏发电系统还包括：连接于PV1.1和VD1之间的电阻R1以及连接于PV1.2和VD2之间的电阻R2；此时，PV1.1仍保持负极对地零偏压状态，PV1.2仍保持负极对地正偏压状态。
作为优选，参见图4a，为了对已有电势诱导衰减的1类光伏组件PV1进行放电恢复，图2a所示的1类抗PID光伏发电系统还可包括：正极接PV1的负极、负极接VD的阴极的电压源US；此时，PV1负极对地正偏压。
对应的，参见图4b，图2b所示的1类抗PID光伏发电系统还包括：正极接 PV1.1的负极、负极接VD1的阴极的电压源US1，以及正极接PV1.2的负极、负极接VD2的阴极的电压源US2；此时，PV1.1和PV1.2均为负极对地正偏压状态。
由上述描述可以看出，本实施例一将1类光伏组件的负极接二极管的阴极、并将该二极管的阳极接地，当多个配置有该种二极管的1类光伏组件通过逆变器共交流侧时，由于二极管具备单向导电性可断开环流，并将输出电压较高的1类光伏组件的负极钳位至对地零电位、将输出电压较低的1类光伏组件的负极上抬为对地正向电压，因此保证了系统的稳定可靠性和抗PID特性。
实施例二：
参见图5a，本实施例二公开的一种2类抗PID光伏发电系统，包括：2类光伏组件PV2、与2类光伏组件PV2相连的逆变器，以及阳极接地、阴极接2类光伏组件PV2的正极的二极管VD。
当单个配置有二极管VD的2类光伏组件PV2通过逆变器独立并网运行时，VD的存在使得PV2正极对地零偏压。
当多个配置有二极管VD的2类光伏组件PV2通过逆变器共交流侧时，如图5b所示(以2个分别配置有二极管VD1和二极管VD2的2类光伏组件PV2.1和2类光伏组件PV2.2为例)，当PV2.1的输出电压高于PV2.2时，VD1和VD2的存在可切断环流并使得PV2.1的正极对地正偏压、PV2.2的正极对地零偏压。
作为优选，参见图6a，为了限制2类光伏组件PV2负极对地短路时的短路电流，图5a所示的2类抗PID光伏发电系统还包括：连接于PV2的正极和VD的阴极之间的电阻R；此时PV2保持正极对地零偏压状态。对应的，参见图6b，图5b所示的2类抗PID光伏发电系统还包括：连接于PV2.1和VD1之间的电阻R1以及连接于PV2.2和VD2之间的电阻R2；此时，PV2.1保持正极对地正偏压状态，PV2.2保持正极对地零偏压状态。
作为优选，参见图7a，为了对已有电势诱导衰减的2类光伏组件PV2进行放电恢复，图5a所示的2类抗PID光伏发电系统还可包括：正极接PV2的正极、负极接VD的阴极的电压源US；此时，PV2正极对地正偏压。对应的，参见图7b，图5b所示的2类抗PID光伏发电系统还包括：正极接PV2.1的正极、负极接 VD1的阴极的电压源US1，以及正极接PV2.2的正极、负极接VD2的阴极的电压源US2；此时，PV2.1和PV2.2仍为正极对地正偏压状态。
由上述描述可以看出，本实施例二将2类光伏组件的正极接二极管的阴极、并将该二极管的阳极接地，当多个配置有该种二极管的2类光伏组件通过逆变器共交流侧时，由于二极管具备单向导电性可断开环流，并将输出电压较低的2类光伏组件的正极钳位至对地零电位、将输出电压较低的2类光伏组件的正极上抬为对地正向电压，因此保证了系统的稳定可靠性和抗PID特性。需要说明的是，本实施例二所述方案与实施例一原理一致，所以描述的比较简单，相关之处互相参见即可。
实施例三：
参见图8a，本实施例三公开的一种3类抗PID光伏发电系统，包括：3类光伏组件PV3、与3类光伏组件PV3相连的逆变器，以及阴极接地、阳极接3类光伏组件PV3的负极的二极管VD。
分析可知，当单个配置有二极管VD的3类光伏组件PV3通过逆变器独立并网运行时，由于VD阴极接地，因此VD会利用单向导电性将PV3的负极钳位至对地零电位，此时PV3因负极对地零偏压而具备了良好的抗PID特性。
当多个配置有二极管VD的3类光伏组件PV3通过逆变器共交流侧时，如图8b所示(以2个分别配置有二极管VD1和二极管VD2的3类光伏组件PV3.1和3类光伏组件PV3.2为例)，当PV3.1的输出电压高于PV3.2时，VD1和VD2的单向导电性使得地极GND1和地极GND2之间无法再形成环流CI；同时，由于VD1阴极接地且处于截止状态，因此VD1可利用单向导电性将PV3.1的负极下拉为对地反向电位，即令PV3.1的负极对地负偏压，由于VD2阴极接地且处于导通状态，因此VD2可利用单向导电性将PV3.2的负极钳位至对地零电位，即令PV3.2的负极对地零偏压；此时PV3.1和PV3.2因满足负极对地没有正偏压的要求而具备了良好的抗PID特性。
作为优选，参见图9a，为了限制3类光伏组件PV3正极对地短路时的短路电流，图8a所示的3类抗PID光伏发电系统还可包括：连接于PV3的负极和 二极管VD的阳极之间的电阻R；此时PV3仍保持负极对地零偏压状态。
对应的，参见图9b，图8b所示的3类抗PID光伏发电系统还包括：连接于PV3.1和VD1之间的电阻R1以及连接于PV3.2和VD2之间的电阻R2；此时，PV3.1仍保持负极对地负偏压状态，PV3.2仍保持负极对地零偏压状态。
作为优选，参见图10a，为了对已有电势诱导衰减的3类光伏组件PV3进行放电恢复，图8a所示的3类抗PID光伏发电系统还可包括：负极接PV3的负极、正极接VD的阳极的电压源US；此时，PV3的负极对地负偏压。
对应的，参见图10b，图8b所示的3类抗PID光伏发电系统还包括：负极接PV3.1的负极、正极接二极管VD1的阳极的电压源US1，以及负极接PV3.2的负极、正极接二极管VD2的阳极的电压源US2；此时，PV3.1和PV3.2均为负极对地负偏压状态。
由上述描述可以看出，本实施例三将3类光伏组件的负极接二极管的阳极、并将该二极管的阴极接地，在多台配置有该种二极管的3类光伏组件通过逆变器共交流侧时，由于二极管具备单向导电性可断开环流，并将输出电压较高的3类光伏组件的负极下拉为对地反向电压、将输出电压较低的3类光伏组件的负极钳位至对地零电位，因此保证了系统的稳定可靠性和抗PID特性。
实施例四：
参见图11a，本实施例四公开的一种4类抗PID光伏发电系统，包括：4类光伏组件PV4、与4类光伏组件PV4相连的逆变器，以及阴极接地、阳极接4类光伏组件PV4的正极的二极管VD。
分析可知，当单个配置有二极管VD的4类光伏组件PV4通过逆变器独立并网运行时，VD的存在使得PV4正极对地零偏压。
当多个配置有二极管VD的4类光伏组件PV4通过逆变器共交流侧时，如图11b所示(以2个分别配置有二极管VD1和二极管VD2的4类光伏组件PV4.1和4类光伏组件PV4.2为例)，当PV4.1的输出电压高于PV4.2时，VD1和VD2的存在可阻断环流并将PV4.1的正极钳位至对地零电位、将PV4.2的正极下拉为对地反向电位。
作为优选，参见图12a，为了限制光伏组件PV4负极对地短路时的短路电流，图11a所示的4类抗PID光伏发电系统还可包括：连接于PV4的正极和二极管VD的阳极之间的电阻R；此时PV4仍保持正极对地零偏压状态。对应的，参见图12b，图11b所示的4类抗PID光伏发电系统还包括：连接于PV4.1和VD1之间的电阻R1以及连接于PV4.2和VD2之间的电阻R2；此时，PV4.1仍保持正极对地零偏压状态，PV4.2仍保持正极对地负偏压状态。
作为优选，参见图13a，为了对已有电势诱导衰减的光伏组件PV4进行放电恢复，图11a所示的4类抗PID光伏发电系统还可包括：负极接PV4的正极、正极接VD的阳极的电压源US；此时，PV4的负极对地负偏压。对应的，参见图13b，图11b所示的4类抗PID光伏发电系统还包括：负极接PV4.1的正极、正极接二极管VD1的阳极的电压源US1，以及负极接PV4.2的正极、正极接二极管VD2的阳极的电压源US2；此时，PV4.1和PV4.2均为正极对地负偏压状态。
由上述描述可以看出，本实施例四将4类光伏组件的正极接二极管的阳极、并将该二极管的阴极接地，在多个配置有该种二极管的4类光伏组件通过逆变器共交流侧时，由于二极管具备单向导电性可断开环流，并将输出电压较低的4类光伏组件的正极下拉为对地反向电压、将输出电压较高的4类光伏组件的正极钳位至对地零电位，因此保证了系统的稳定可靠性和抗PID特性。需要说明的是，本实施例四所述方案与实施例三原理一致，所以描述的比较简单，相关之处互相参见即可。
此外，本发明还公开了一种抗PID光伏组件，包括光伏组件和一端接地、另一端接所述光伏组件的电极的二极管；以及一种抗PID逆变器，包括逆变器和一端接地、另一端接所述逆变器的电源输入端的二极管。应用有所述抗PID光伏组件或所述抗PID逆变器的光伏发电系统具有良好的稳定可靠性和抗PID特性，其工作原理与本发明公开的抗PID光伏发电系统一致，此处不再一一赘述。
综上所述，本发明将现有的光伏组件通过二极管接地，利用二极管的单向 导电性阻断了光伏发电系统中可能出现的环流，保证了系统的稳定可靠性；同时还利用二极管的单向导电性将光伏组件的对地电位钳制至预设值，保证了系统的抗PID特性。此外基于上述方案，本发明还可在光伏组件和二极管之间增设一些辅助电子器件以达到额外的有益效果，如用于限制光伏组件对地短路时的短路电流的电阻、用于对已有电势诱导衰减的光伏组件进行放电恢复的电压源、用于防止光伏组件对地短路的直流熔丝、或者用于检测光伏组件对地漏电流的电流传感器等等，并不局限。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明实施例的精神或范围的情况下，在其它实施例中实现。因此，本发明实施例将不会被限制于本丈所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (12)

  1. 一种抗潜在电势诱导衰减PID光伏发电系统，包括光伏组件和与所述光伏组件相连的逆变器，其特征在于，还包括：一端接地、另一端接所述光伏组件的电极的二极管。
  2. 根据权利要求1所述的抗PID光伏发电系统，其特征在于，当所述光伏组件为要求负极对地没有负偏压的光伏组件时，所述二极管阳极接地、阴极接所述光伏组件的负极。
  3. 根据权利要求1所述的抗PID光伏发电系统，其特征在于，当所述光伏组件为要求正极对地没有负偏压的光伏组件时，所述二极管阳极接地、阴极接所述光伏组件的正极。
  4. 根据权利要求1所述的抗PID光伏发电系统，其特征在于，当所述光伏组件为要求负极对地没有正偏压的光伏组件时，所述二极管阴极接地、阳极接所述光伏组件的负极。
  5. 根据权利要求1所述的抗PID光伏发电系统，其特征在于，当所述光伏组件为要求正极对地没有正偏压的光伏组件时，所述二极管阴极接地、阳极接所述光伏组件的正极。
  6. 根据权利要求1所述的抗PID光伏发电系统，其特征在于，还包括：连接于所述光伏组件的电极和所述二极管之间的电阻，或者连接在所述二极管和地之间的电阻。
  7. 根据权利要求1所述的抗PID光伏发电系统，其特征在于，当所述光伏组件为要求负极对地没有负偏压的光伏组件时，还包括：正极接所述光伏组件的负极、负极接所述二极管的阴极的电压源，或者正极接所述二极管的阳极、负极接地的电压源。
  8. 根据权利要求1所述的抗PID光伏发电系统，其特征在于，当所述光伏组件为要求正极对地没有负偏压的光伏组件时，还包括：正极接所述光伏组件的正极、负极接所述二极管的阴极的电压源，或者正极接所述二极管的阳极、负极接地的电压源。
  9. 根据权利要求1所述的抗PID光伏发电系统，其特征在于，当所述光伏组件为要求负极对地没有正偏压的光伏组件时，还包括：负极接所述光伏组 件的负极、正极接所述二极管的阳极的电压源，或者负极接所述二极管的阴极、正极接地的电压源。
  10. 根据权利要求1所述的抗PID光伏发电系统，其特征在于，当所述光伏组件为要求正极对地没有正偏压的光伏组件时，还包括：负极接所述光伏组件的正极、正极接所述二极管的阳极的电压源，或者负极接所述二极管的阴极、正极接地的电压源。
  11. 一种抗PID光伏组件，包括光伏组件，其特征在于，还包括：一端接地、另一端接所述光伏组件的电极的二极管。
  12. 一种抗PID逆变器，包括逆变器，其特征在于，还包括：一端接地、另一端接所述逆变器的电源输入端的二极管。
PCT/CN2015/075841 2014-05-09 2015-04-03 抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器 Ceased WO2015169135A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410196200.9 2014-05-09
CN201410196200.9A CN103944502B (zh) 2014-05-09 2014-05-09 抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器

Publications (1)

Publication Number Publication Date
WO2015169135A1 true WO2015169135A1 (zh) 2015-11-12

Family

ID=51192024

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/075841 Ceased WO2015169135A1 (zh) 2014-05-09 2015-04-03 抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器

Country Status (2)

Country Link
CN (1) CN103944502B (zh)
WO (1) WO2015169135A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107492907A (zh) * 2017-08-29 2017-12-19 武汉协鑫新能源电力设计有限公司 一种具有pid抑制及修复功能的控制装置及其控制方法
CN113067365A (zh) * 2020-01-02 2021-07-02 合肥阳光新能源科技有限公司 直流耦合风光互补系统及其光伏pid修复控制方法
CN114814490A (zh) * 2022-04-20 2022-07-29 阳光电源股份有限公司 一种绝缘监测方法、装置及新能源发电系统
WO2025130721A1 (zh) * 2023-12-20 2025-06-26 华为数字能源技术有限公司 一种光储系统

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103944502B (zh) * 2014-05-09 2016-05-25 阳光电源股份有限公司 抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器
CN104201714A (zh) * 2014-08-21 2014-12-10 山亿新能源股份有限公司 又一种抗多机并联光伏发电系统潜在电势诱导衰减电路
CN104242811A (zh) * 2014-09-24 2014-12-24 彭书芳 光伏供电系统
CN104201981B (zh) * 2014-09-25 2017-01-11 阳光电源股份有限公司 一种反电势诱导衰减的控制方法及控制系统
CN104242349B (zh) * 2014-10-10 2016-09-21 阳光电源股份有限公司 防电势诱导衰减的光伏系统和光伏逆变器
CN104300584B (zh) * 2014-11-07 2017-02-01 深圳市永联科技股份有限公司 一种高安全性的pid效应抑制方法
CN105680793B (zh) * 2016-03-23 2018-02-23 阳光电源股份有限公司 一种光伏系统的电压补偿装置及光伏系统
CN107196597B (zh) * 2017-05-16 2019-12-13 华为技术有限公司 一种光伏发电系统
CN107994861A (zh) * 2017-11-20 2018-05-04 厦门科华恒盛股份有限公司 一种解决潜在电势诱导衰减的系统及方法
CN109638808A (zh) * 2018-12-21 2019-04-16 华为数字技术（苏州）有限公司 电势诱导衰减的补偿电路、方法、功率模块及光伏系统
JP2021083302A (ja) * 2019-11-13 2021-05-27 ソーラーエッジ テクノロジーズ リミテッド 太陽電池（ｐｖ）モジュールの信頼性と耐用年数を向上させるシステムと方法
ES2988372T3 (es) * 2020-08-14 2024-11-20 Huawei Digital Power Tech Co Ltd Sistema y método de protección de enlace para central fotovoltaica

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103248007A (zh) * 2013-05-20 2013-08-14 中节能东台太阳能发电有限公司 一种抗pid电路及其监控装置
CN203166494U (zh) * 2013-03-26 2013-08-28 阳光电源（上海）有限公司 一种解决电势诱导衰减的装置
CN103475271A (zh) * 2013-09-24 2013-12-25 深圳市禾望电气有限公司 一种光伏发电系统及其控制方法
CN103647504A (zh) * 2013-12-17 2014-03-19 刘继茂 太阳能电池接地装置及方法
CN103944502A (zh) * 2014-05-09 2014-07-23 阳光电源股份有限公司 抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器
CN103986192A (zh) * 2014-05-28 2014-08-13 阳光电源股份有限公司 一种非隔离型光伏并网逆变器和光伏并网发电系统
CN204244167U (zh) * 2014-11-17 2015-04-01 阳光电源股份有限公司 一种多电平光伏发电系统中的反pid装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202103067U (zh) * 2011-04-19 2012-01-04 上海臻和防雷电气技术有限责任公司 防过压太阳能电池板
JP2013161011A (ja) * 2012-02-08 2013-08-19 Canon Inc 撮像装置
WO2014047006A1 (en) * 2012-09-18 2014-03-27 Dow Corning Corporation Methods of reducing and/or eliminating potential induced degradation of photovoltaic cell modules
CN203251076U (zh) * 2013-05-20 2013-10-23 中节能东台太阳能发电有限公司 一种抗pid电路及其监控装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203166494U (zh) * 2013-03-26 2013-08-28 阳光电源（上海）有限公司 一种解决电势诱导衰减的装置
CN103248007A (zh) * 2013-05-20 2013-08-14 中节能东台太阳能发电有限公司 一种抗pid电路及其监控装置
CN103475271A (zh) * 2013-09-24 2013-12-25 深圳市禾望电气有限公司 一种光伏发电系统及其控制方法
CN103647504A (zh) * 2013-12-17 2014-03-19 刘继茂 太阳能电池接地装置及方法
CN103944502A (zh) * 2014-05-09 2014-07-23 阳光电源股份有限公司 抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器
CN103986192A (zh) * 2014-05-28 2014-08-13 阳光电源股份有限公司 一种非隔离型光伏并网逆变器和光伏并网发电系统
CN204244167U (zh) * 2014-11-17 2015-04-01 阳光电源股份有限公司 一种多电平光伏发电系统中的反pid装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107492907A (zh) * 2017-08-29 2017-12-19 武汉协鑫新能源电力设计有限公司 一种具有pid抑制及修复功能的控制装置及其控制方法
CN107492907B (zh) * 2017-08-29 2024-04-12 武汉协鑫新能源电力设计有限公司 一种具有pid抑制及修复功能的控制装置及其控制方法
CN113067365A (zh) * 2020-01-02 2021-07-02 合肥阳光新能源科技有限公司 直流耦合风光互补系统及其光伏pid修复控制方法
CN114814490A (zh) * 2022-04-20 2022-07-29 阳光电源股份有限公司 一种绝缘监测方法、装置及新能源发电系统
WO2025130721A1 (zh) * 2023-12-20 2025-06-26 华为数字能源技术有限公司 一种光储系统

Also Published As

Publication number Publication date
CN103944502A (zh) 2014-07-23
CN103944502B (zh) 2016-05-25

Similar Documents

Publication Publication Date Title
WO2015169135A1 (zh) 抗潜在电势诱导衰减光伏发电系统、光伏组件和逆变器
CN104242349B (zh) 防电势诱导衰减的光伏系统和光伏逆变器
CN103986192B (zh) 一种非隔离型光伏并网逆变器和光伏并网发电系统
CN106603007B (zh) 光伏阵列对地绝缘阻抗检测电路
CN102967766B (zh) 双路光伏逆变器对地绝缘电阻的无开关管检测系统及方法
MY188090A (en) Main-gate-free and high-efficiency back-contact solar cell module, main-gate-free and high-efficiency back-contact solar cell assembly, and preparation process thereof
CN202455064U (zh) 防反接报警电路
CN103728753A (zh) 显示基板和显示装置
CN204244167U (zh) 一种多电平光伏发电系统中的反pid装置
CN207896931U (zh) 一种光伏电池组件
EP2518778A2 (en) Junction box
CN204967263U (zh) 隔离电路及双电源供电系统
CN106786750B (zh) 光伏并网系统和光伏并网逆变器
CN104682371A (zh) 一种利用mos管的大电流直流防反接电路
CN207518896U (zh) Led发光驱动电路
CN205283491U (zh) 多模块逆变器直流侧绝缘监测装置及包含其的光伏系统
CN103683920A (zh) 开关电感有源网络升压变换器
CN109817747A (zh) 一种拼片太阳能晶硅电池组件
CN106937435B (zh) 一种无极性整流电路
CN203934064U (zh) 一种多通道式led驱动电源
CN203339686U (zh) 恒流源短路保护的抑制电路
CN204615751U (zh) 一种二极管防反装结构
CN203674215U (zh) 发光二极管
US9560701B2 (en) Driving circuit and lamps
CN209233726U (zh) 一种三电平升压电路

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15788879

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15788879

Country of ref document: EP

Kind code of ref document: A1