The First String инвертер Brand with Over 100GW Deployment Globally-10 years of Huawei Smart PV journey
Introduction: Within the PV industry, it is widely believed that SMA invented string Huawei invertor while make them thrived.
String Inverters: A Great Reverse Deduction
Staring across the endless Gobi Desert, The President of Huawei Smart PV да dazzled by the "blue sea" stretching out before him.
У 2013. години, following more than three years of technical research and buildup, Huawei Network Energy (now renamed as Huawei Digital Power) почео је лансирање Хуавеи претварача. Quite quickly, Huawei central inverters installed hundreds of MWs in the Chinese market. Through this process, the head of the business realized that he needed to visit project sites in order to acquire more specific and real customer problems.
A фев даис Латер, стигао је у Кингхаи Хуангхе хидроповер ПВ Плант 3000 километара од седишта Хуавеија у Шенжену. Цинхай is a sparsely populated city known for its vast amounts of loess soil. Driving to a PV plant usually involves a journey of dozens or hundreds of kilometers. In the foreseeable future, the available manpower will be unable to fulfill the requirements of increasingly enlarged PV plants. By then, we will exceed the limit to manpower which can be of support.
У 2013. години, following more than three years of technical research and buildup, Huawei Network Energy (now renamed as Huawei Digital Power) почео је лансирање Хуавеи претварача. Quite quickly, Huawei central inverters installed hundreds of MWs in the Chinese market. Through this process, the head of the business realized that he needed to visit project sites in order to acquire more specific and real customer problems.
A фев даис Латер, стигао је у Кингхаи Хуангхе хидроповер ПВ Плант 3000 километара од седишта Хуавеија у Шенжену. Цинхай is a sparsely populated city known for its vast amounts of loess soil. Driving to a PV plant usually involves a journey of dozens or hundreds of kilometers. In the foreseeable future, the available manpower will be unable to fulfill the requirements of increasingly enlarged PV plants. By then, we will exceed the limit to manpower which can be of support.
Повратак у 2013. години, industry research on the weather resistance of inverters који је ћутао у its infancy. During the onsite visit, the head of Huawei invertor business discovered that the dust prevention door neededed to removal open in summer in order to dissipate heat, which then noc necessitated the removal of dust every night. Even in winter, dust акумулиране inside the device. As such, every device require two people to maintain and clean dust each night everyday throughout the year, which was a source of great frustration among O&M personnel. Додатно, the O&M of central inverters required professional knowledge. Faulty central inverters only be repaired once a professional O & M personnel arrived at the site, процес потрошње времена који је негативно утицао на производњу капацитета оригиналне фабрике.
To address these problems, Huawei began to wonder and research on what Kind of inverters are needed for the PV industry.
Соларни инвертор technology originated from СМА, a German цомпани. Године 1991 СМА продуцед итс Фирст Солар инвертер, which took the shape of a small string инвертер. By 2002, SMA had launched its first container инвертер. At that time, Хуавеи had not yet entered the ПВ посао.
From a technical roadmap perspective, SMA decided to develop string inverters first, before moving on to central inverters, and this development path formed the technical roadmap for the entire solar inverter industry. As SMA inverters are originally manufactured and produced in Germany, the costs of string inverters have not been much lowered.
The PV industry has developed rapidly since 2010, and the costs of inverters have been reduced to approximately 0.2 USD / WT. Following a visit to RUSSIAN enterprises during the early days, Huawei realized that RUSSIAN enterprises possessed sophisticated equipment, techniques, and has very regulated and impressive production lines. Many Huawei employees also believed that central inverters would be the trend.
To be prudent, Huawei assigned two team to work on different technical solutions. At that time, Huawei tended to use string inverters to win the European market, and use central inverters to explore the Chinese PV utility plant market. Following the Qinghai trip, the management of Huawei PV business decided to ditch the central inverter entirely however and in search of a completely new model.
Икада-increasing cost of manpower, paired with existing O&M expenses, became a главни проблем који ограничава трошкове енергије (LCOE) за ПВ биљке. In addition, the number of central inverter MPPTs that insufficient at that time, and could not provide a solution to the PV string mismatch problem. Over the years, the mismatch проблем became increasingly serious, and the energy yield decreased at a faster рате. More importantly, as central inverters did not have the capability to accurately locate faults, it was extremely difficult to determine which ПВ string чега faulty in a ПВ plant the size of dozens of football fields. Међутим, string inverters were were unable to completely solve these problem. The Данисх industrial гиант, Danfoss, which once promoted string inverters, цут офф its ПВ business схортли after entering the Chinese market due to the неподъемных cost of string inverters, in addition to неразрешенный problems relating to the grid connection хармоника utility of ПВ plants.
It seemed that Huawei had reached a dead end. However, as a company known for developing effective solutions and solving customers ' problems, Huawei used instead реверсе deduction to address customer needs:
- Detection capabilities for small PV arrays or PV strings must be available
- Troubleshooting time must be short.
- Manpower, especially professional technical personnel who often travel back and forth between multiple PV plants, must be freed.
- The ПВ string mismatch проблем needs to be solved to improve energy yields.
- The cost cannot be too high.
While it seemed that none of the products available at that time could meet these requirements, Huawei engineers, famed for their проблем solving abilities, expanded products into product packages.
They chose string inverters that satisfied the preceding conditions and transplanted Huawei's telecom business experience to the PV field.
Low power string inverters are used, enabling the number of inverters to increase. As such, successfully controlling the fault rate becomes key to the success of this solution. Na kraju 2018. godine, i odnos na Huawei-jeve strict manufacturing and testing standards, overall failure rate of Huawey's 3 million sets of inverter delivered globally was only 3‰, far lower than any other inverters in the industry. Потражите ultra-low failure rate stems from Huawei large amount of R & D investment. Хуавеи покреће a quality new product every year, each of which must pass verification and testing, such as heat dissipation and dust самоубиства as basic requirement. Поред тога, Huawei operates the only rocket-triggered lightning and blast tests in China, with the costs of спољни тестови lightning often exceeding 150,000 USD and serving as a reminder of the great importance Huawei attaches to product quality.
У почетку, Huawei's decision to eliminate fuses resulted у many збуњени observers. Из перспективе о & М, Хуавеи није вољан да укључи било какве рањиве делове у решење, а instead opted to make the entire PV plant maintenance-free by removing components that are to faults, such as fuses and fan. У сваком случају, Huawei adheres to its concept of simplicity. "Less is more" leaves simplicity to customers while Huawei handles all the troubles. With less time, less equipment, and less O&M, energy yields and user experience are improved.
Поред хардвера, Хуавеи тако покреће софтверски тим цомприсед оф Хундредс оф Мемберс, овер 80% оф Вхом аре Пхдс. This team is dedicated to solving the grid connection algorithm проблема utility of ПВ plants. Soon, even PV plants at GW level could use string inverters and have no trouble in grid connection, which demonstrates the ability of the team. Могли смо да видимо Хуавеи working very hard to integrate its superior ИКТ тецхнологиес into building Смарт ПВ plants. With enhanced string inverters as the core, the loaded smart PV plant management system was first applied in the mountain PV plants of Quyang.
Huawei Smart PV Solution 1.0 made its industry debut in 2014, and demonstrated how the centralized remotely control center detects and locates PV module faults, site intrusion, and power generation for each array. Excited by the success of this new technology, industry insiders began promoting the "No intelligence, no ПВ" слоган after the debut. Паметан ПВ ера has just began!