CEC relevant person in charge of the China Securities Journal reporters, led by the China Electricity Council , China Electric Power Research Institute , State Grid EPRI and the associated number of units involved in the preparation of 40 PV gateway key technical standards, has more than 10 draft standard form , the remaining 30 have been formed in recent drafts . Standards Working Group plans to complete the first half of this year, a number of PV standard written above , in order to build photovoltaic main skeleton key gateway standard . The parties, these standards take into account the electricity side , power plants, photovoltaic roof , and many other needs, if successfully implemented will effectively boost the release of photovoltaic grid .

PV grid power quality standards for photovoltaic power plants proposed new requirements , the industry believes that the standard greater impact on power stations and photovoltaic inverters, or procure the PV inverter industry upgrade. Sunshine Power ( 300274 ) official said , photovoltaic inverter will regulate the development of standards to improve the industry , the company formed positive.

Prepared by the engineering units , such as the construction of the State Grid Corporation of China national standard " access to power system PV power plant design" , " photovoltaic access distribution network design" , " photovoltaic power station reactive power compensation technical specifications" have been formed comments draft, currently CEC online publicity , requiring 10 March 2012 prepared in group feedback to the standard .

This number is above standard 40 -key standard PV gateway of three . Total current standards working group has prepared more than 40 PV gateway key technical standards, which form a draft of about 10 items, the remaining nearly 30 standard draft. CEC these people , the project aims to analyze domestic photovoltaic power generation standards , building standards of domestic photovoltaic power generation system .

" To promote photovoltaic power generation and network standards working group hopes to complete the preparation of more than 40 key criteria in the first half of this year ." CEC these parties, these standards also include photovoltaic power stations access technical requirements of power system , photovoltaic power generation system access to the distribution network of national standards and technical regulations and other low- voltage photovoltaic power plants across the detection procedure , photovoltaic power plants and other power pure sine wave power inverter quality detection technology industry standard protocols . Standards Working Group predicts that want to build a sound standard photovoltaic power generation system , at least hundreds of standards.

According to reports, the relevant standards after a two-month publicity and collect recommendations, standards working group will be modified based on feedback , and reported to the Ministry of Housing , AQSIQ released after examination and other related departments .

Last July , the NDRC issued photovoltaic benchmark price , prompting rapid increases in domestic PV installed capacity , but also makes photovoltaic power steering occupied by the Internet . Analysts pointed out that with the installed capacity of wind power behind the different standards in the country launched a large-scale photovoltaic power generation capacity , while the key standards for photovoltaic and Gateway is expected to be introduced in parallel , which will facilitate early resolution of photovoltaic power generation and network technical problems , thus contributing to PV healthy development of the industry .

 In recent years , the domestic photovoltaic industry sustained and rapid development . However , all along, China's photovoltaic industry is taking the " two out " model of development , nearly 80 % of the raw materials imported from abroad, turn over 90 % of the photovoltaic module products exported to abroad. This development model makes China's photovoltaic industry has greatly constrained by foreign markets , so unable to cope with the "double reverse" investigation initiated by the current European and American industrial development suffered.

The face of Europe "dual" under foreign markets shrinking , Chinese PV companies began to put more attention to the domestic market , while the more recent introduction of national support policies are more predictive of the domestic PV market prospects. Meanwhile, as the domestic market is about to open , as the core components of photovoltaic systems dc ac converter market demand will be growing .

For the recent financial difficulties of the domestic photovoltaic enterprises encounter in foreign markets , national ministries issued a series of policy documents intensive support PV companies through the " winter" , to promote the development of photovoltaic industry , in this context , the domestic PV market is expected to start mass .

More recently, the National Energy Board issued a " declaration of distributed PV on large-scale demonstration zone notification " shows that the state will introduce an installed capacity of 15 million kilowatts of distributed generation planning and reporting requirements of the various embodiments of the provinces the move is seen as an important opportunity to open the domestic photovoltaic applications market. Subsequently, the National Grid issued "on doing distributed PV grid- service Work"

Distributed photovoltaic power generation projects within the scope of application will provide access to system programming and network testing , debugging and so the whole process of service charge , public power grids caused by a distributed photovoltaic access , access to the public grid connection All network project funded by power companies . Thus , the PV industry has been tangled network initially difficult problems have been alleviated . National Grid issued new regulations may be more motivated to further improve the domestic capital investment of distributed PV projects.

Have been put forward to support the national industry policies showed strong willingness to PV http://www.gridtiepowerinverteronline.com/ companies , as well as the domestic market to start clearing the obstacles , which will change the long-standing PV companies "two out" of the situation to some extent , the real stimulus distributed photovoltaic power generation projects and other new energy sources in the country to develop . Status from the dialectical perspective on the domestic photovoltaic industry , the market downturn is often the industrial adjustment in the current crisis facing the industry are also quietly giving birth to a whole new opportunity for industrial development..

Energy was recently acquired subsidiary of DE Shaw Renewable Investments and Project Manager Bright Plain Renewable Pennsylvania a 5MW solar farm.

The solar farm by the Lancaster County Community Energy Solar developed, based on a long-term power purchase agreements, the power output of the project by Exelon Generation generator is responsible. Commercial and utility-scale solar design, procurement and construction company groSola as turnkey EPC contractor for the project.

Nearly twenty thousand Artes Solar 290W solar modules mounted on fixed angle provided by Schletter, ground-mounted on an aluminum frame, will interconnect with AE pure sine wave power inverter and platforms to PPUL12kV grid.

BPRE CEO David Boots ratio (David Buzby), said: "Keystone Solar marks BPRE are working through at the beginning of the construction of the solar project to provide insightful, cost-competitive and reliable capital, so that solar energy development providers to be successful. "

According to the U.S. Environmental Protection Agency expects the project to generate renewable electricity will be sufficient to avoid 5,726 tons of carbon dioxide emissions per year, equivalent to remove more than 1,193 cars from the road annually Pennsylvania.

 PV industry has come winter , the various manufacturers of photovoltaic industry chain struggled desperately to cut costs in order to be more ruthless price customers will be required , as the PV inverter industry chain most technical content of days Jiaozi - PV grid-connected inverter , also spared , 500KW grid inverter price, from today's 0.5 yuan per watt in 2009 dropped to 2.0 yuan per watt inverter manufacturers in lower profits at the same time , alternative photovoltaic inverter also more expensive components or even cancel conducted to ensure that the whole of the price drop.

However, due to the special status of PV inverters in photovoltaic power plants , some inverter manufacturers cost reduction measures have seriously jeopardized the entire industry. Because in photovoltaic power plants , the cost of the inverter is less than 10 % loss accounts for more than 80 % to 90% power generation efficiency of photovoltaic power plants controlled by the inverter, inverter assessment methods can not rely on the price , the more important the inverter is to look at the actual generation capacity.

Now the domestic production of inverters up to 300 manufacturers , ultimately left 10 influential manufacturers will come home in the end what companies will ultimately survive , which companies will be the first out , I think: just keep going back to the product quality route, sense of social responsibility , moral bottom line, companies have continued to improve capacity is the ultimate winner. I engaged in photovoltaic inverter design more than five years , from the perspective of a systems engineer , to tell you some bad Revealed manufacturers reduce costs insider.

MPPT efficiency mystery , in the photovoltaic inverter specifications book, most manufacturers have MPPT efficiency of this indicator, some marked as 99% , some even labeled as 99.9%, MPPT efficiency is currently no reliable instrument to measure , do not require certification measurements , in fact , MPPT efficiency is the most critical factor in the decision PV inverter generation , far more than the importance of the efficiency of the PV inverter DC TO AC itself , domestic PV inverters are under the same conditions as Comparative generating capacity , may differ up to 20% of this difference is mainly due to MPPT efficiency.

There MPPT students can first understand the basic principles and implementation methods Baidu MPPT 's . I mainly to everyone Revealed MPPT efficiency calculation methods and sources , MPPT efficiency equal hardware efficiency multiplied by the efficiency of software and hardware efficiency mainly by the accuracy of the current sensor to determine the accuracy of the sampling circuit , the software efficiency is mainly determined by the sampling frequency , there are many ways to achieve MPPT , but no matter which method is used , the first to measure the components of the power of change, and then react to changes . This is one of the most critical components is the current sensor , its accuracy and linearity errors will directly determine the efficiency of the hardware , software and sampling frequency accuracy by hardware also determined .

 Recently, the China independently developed by CSR Zhuzhou the GTI-500 -type photovoltaic inverter at an altitude of 3100 meters in Qinghai xitiesan CGN a photovoltaic power plant successfully achieved high altitude grid.

PV inverters and power generation systems is one of the core equipment of photovoltaic, solar energy and energy conversion to achieve it plays a key role in the . Solar photovoltaic modules into DC power into AC power through synchronous AC power inverter into the power grid to achieve grid. China independently developed by CSR Zhuzhou the GTI-500 uses a unique type photovoltaic inverter inverter without transformer design techniques and parallel , and has been certified by the authority of the Golden Sun , TUV and CE .

Previously, the station experienced a photovoltaic off grid inverter commissioning 10kV high-voltage grid , the inverter installation, cooling duct reconstruction , strict examination site and network commissioning and optimization of multiple parameters MPPT site links, has stood the test of high altitude to overcome the problem of inverter heat the thin air at high altitudes caused . Currently, the system is working properly , stable performance, good thermal performance , power efficiency power generation level of similar foreign products , praised by users .

According to the National Development Planning of strategic emerging industries , xitiesan Haixi Mongolian- Tibetan Autonomous Prefecture location will be to build solar power base , in 2015 the formation of 7.5GW of installed capacity . The GTI-500 PV inverter gridtiepowerinverteronline successful grid , marking the company's core technology concentric diversification strategy successfully in the implementation of new energy photovoltaic , solar PV market to compete Qinghai has laid a solid foundation for the subsequent large quantities and high application of technical experience gained altitude .