Grid Interconnection of Renewable Energy Sources at the Distribution Level Wi...Pradeep Avanigadda
Renewable energy resources (RES) are being increasingly connected in distribution systems utilizing power electronic converters.
This project presents a novel control strategy for achieving maximum benefits from these grid-interfacing inverters when installed in 3-phase 4-wire distribution systems.
The inverter can thus be utilized as:
1) power converter to inject power generated from RES to the grid &
2) shunt APF to compensate current unbalance, load current harmonics, load reactive power demand and load neutral current.
Introduction
Power Quality Problems
Power Quality Measurement Devices
Power Quality Terminology
Power Quality Standards
Unbundled Power Quality Services
Power Quality Monitoring
Benefits of Power Quality
Conclusion
References
Dc-Dc boost converter topologies and MPPT techniques for Grid connected PV sy...rameshwar meena
1. Modeling of Dc-Dc boost converter in MATLAB Simulink.
2. MATLAB Simulink of P&O techniques and Incremental conductance.
3. Ac grid connected to solar PV array via dc-dc boost converter and Dc-Ac converter.
This ppt gives information about floating solar power plant. A floating solar power plant installed on water bodies. This system is more convenient than regular solar power plant installed on lands. This ppt gives detailed information about information about floating solar power plant.
Grid Interconnection of Renewable Energy Sources at the Distribution Level Wi...Pradeep Avanigadda
Renewable energy resources (RES) are being increasingly connected in distribution systems utilizing power electronic converters.
This project presents a novel control strategy for achieving maximum benefits from these grid-interfacing inverters when installed in 3-phase 4-wire distribution systems.
The inverter can thus be utilized as:
1) power converter to inject power generated from RES to the grid &
2) shunt APF to compensate current unbalance, load current harmonics, load reactive power demand and load neutral current.
Introduction
Power Quality Problems
Power Quality Measurement Devices
Power Quality Terminology
Power Quality Standards
Unbundled Power Quality Services
Power Quality Monitoring
Benefits of Power Quality
Conclusion
References
Dc-Dc boost converter topologies and MPPT techniques for Grid connected PV sy...rameshwar meena
1. Modeling of Dc-Dc boost converter in MATLAB Simulink.
2. MATLAB Simulink of P&O techniques and Incremental conductance.
3. Ac grid connected to solar PV array via dc-dc boost converter and Dc-Ac converter.
This ppt gives information about floating solar power plant. A floating solar power plant installed on water bodies. This system is more convenient than regular solar power plant installed on lands. This ppt gives detailed information about information about floating solar power plant.
Advance Solar charge controller with lot of benefits. An advantage over common PWM Solar charge controller. Double Boost Technique is used to get a desired output.
As the fifth in a series of tutorials on the power system, Leonardo ENERGY introduces its minute lecture on voltage and frequency control, using the analogy of a metal/rubber plate to demonstrate the centralised nature of frequency control, whereas voltage control is more a local matter.
Power factor improvement is the essence of any power sector for realible operations. This report provides literature study of a fixed capacitor thyristor controlled reactor type of power factor compensator by matlab simulation and implementation in programmed microcontroller. To retaining power factor closed to unity under various load condition the arduino ATmega8 microcontroller is used which is programmed by keil software. The simulation is done using proteus software which display power factor according to the variation in load whenever a capacitive load is connected to the transmission line, a shunt reactor is connected which injects lagging reactive VARs to the power system. This report also includes the matlab simulation for three phase power factor improvement by using fixed capacitor thyristor controlled reactor. As a
result the power factor is improved. The results given in this report provides
suitable matlab simulation and proteus simulation based reactor power compensation and power factor improvement and techniques using a FCTCR.
The presentation gives you the overview of the High Voltage Direct current and Flexible AC transmission systems.
In the presentation, there is the depiction of advantages of Direct current over Alternate current, the current implementation of FACTS around the globe
Renewable Energy Sources are being used in Off-Grid mode. By integrating all these sources to a common point energy efficiency can be improved and frequent dynamic faults can be avoided. This approach needs to implement smart grid and technologies.
Distribution System Voltage Drop and Power Loss CalculationAmeen San
Distribution System Voltage Drop and Power Loss
Calculation
Comparison of Overhead Versus Underground System
Power Loss Calculation,Voltage Drop Calculation
Hybrid Power System is the integration of number of generating plants those are working together serve a particular region. They may be off grid or may not be.
The 7SD610 relay is a differential protection relay suitable for all types of applications and incorporating all those functions required for differential protection of lines, cables and transformers. Transformers and compensation coils within the differential protection zone are protected by means of integrated functions, which were previously to be found only in transformer differential protection. It is also well-suited for complex applications such as series and parallel compensation of lines and cables.
Conventional and emerging converter technologies in hvdc power transmission s...Naveed Shahzad
The efficiency of HVDC system is primarily associated with power electronic converters which are playing the key role in transforming AC to DC and vice versa. There have been several converter topologies known and implemented in HVDC system throughout the world, however the major converter topologies are line commutated-current source converters (CSC) and self-commutated voltage source converters (VSC). This presentation provides an overview and comparison of CSC and VSC converters including their applications, advantages, limitations and new technological advancement related to CSC, and VSC including 2 level VSC and 3 level VSC and newer modular multilevel converter (MMC) topologies.
The Client (Mr.Nizam Hashwani) procured services of Zorays SMC Pvt Limted to get the preinstalled 42.2kW solar power system tied with the K-Electric grid. This pre-installed system required retrofit to meet compliance with AEDB & K-Electric net-metering regulations.
Advance Solar charge controller with lot of benefits. An advantage over common PWM Solar charge controller. Double Boost Technique is used to get a desired output.
As the fifth in a series of tutorials on the power system, Leonardo ENERGY introduces its minute lecture on voltage and frequency control, using the analogy of a metal/rubber plate to demonstrate the centralised nature of frequency control, whereas voltage control is more a local matter.
Power factor improvement is the essence of any power sector for realible operations. This report provides literature study of a fixed capacitor thyristor controlled reactor type of power factor compensator by matlab simulation and implementation in programmed microcontroller. To retaining power factor closed to unity under various load condition the arduino ATmega8 microcontroller is used which is programmed by keil software. The simulation is done using proteus software which display power factor according to the variation in load whenever a capacitive load is connected to the transmission line, a shunt reactor is connected which injects lagging reactive VARs to the power system. This report also includes the matlab simulation for three phase power factor improvement by using fixed capacitor thyristor controlled reactor. As a
result the power factor is improved. The results given in this report provides
suitable matlab simulation and proteus simulation based reactor power compensation and power factor improvement and techniques using a FCTCR.
The presentation gives you the overview of the High Voltage Direct current and Flexible AC transmission systems.
In the presentation, there is the depiction of advantages of Direct current over Alternate current, the current implementation of FACTS around the globe
Renewable Energy Sources are being used in Off-Grid mode. By integrating all these sources to a common point energy efficiency can be improved and frequent dynamic faults can be avoided. This approach needs to implement smart grid and technologies.
Distribution System Voltage Drop and Power Loss CalculationAmeen San
Distribution System Voltage Drop and Power Loss
Calculation
Comparison of Overhead Versus Underground System
Power Loss Calculation,Voltage Drop Calculation
Hybrid Power System is the integration of number of generating plants those are working together serve a particular region. They may be off grid or may not be.
The 7SD610 relay is a differential protection relay suitable for all types of applications and incorporating all those functions required for differential protection of lines, cables and transformers. Transformers and compensation coils within the differential protection zone are protected by means of integrated functions, which were previously to be found only in transformer differential protection. It is also well-suited for complex applications such as series and parallel compensation of lines and cables.
Conventional and emerging converter technologies in hvdc power transmission s...Naveed Shahzad
The efficiency of HVDC system is primarily associated with power electronic converters which are playing the key role in transforming AC to DC and vice versa. There have been several converter topologies known and implemented in HVDC system throughout the world, however the major converter topologies are line commutated-current source converters (CSC) and self-commutated voltage source converters (VSC). This presentation provides an overview and comparison of CSC and VSC converters including their applications, advantages, limitations and new technological advancement related to CSC, and VSC including 2 level VSC and 3 level VSC and newer modular multilevel converter (MMC) topologies.
The Client (Mr.Nizam Hashwani) procured services of Zorays SMC Pvt Limted to get the preinstalled 42.2kW solar power system tied with the K-Electric grid. This pre-installed system required retrofit to meet compliance with AEDB & K-Electric net-metering regulations.
Ornate Solar x Canadian Solar HiKu Series | High Efficiency Solar PanelsOrnate Solar
Canadian Solar HiKu series are high efficiency panels of capacity over 400Wp with dual cell technology which provides 24% more energy than standard modules.
Master MHF series is a scaleable UPS system incorporating a VDC or VDC-XE flywheel. The UPS is ideal for ECO targetted datacentres looking to achieve the lowest possible PUE ratios and highest operational resilience.
Avnet Electronics Marketing presents power devices for solar inverters from STMicroelectronics. Presentation includes: ST 600 vs. SiC diodes, Power MOSFET families, MDmesh series. Choosing the ideal switches for solar inverters and more.
Automatic Power Factor Improvement by Using PLC & SCADAferozpatowary
Power factor correction (PFC) is a process of negotiating the unwanted effects of electric loads that
create a power factor less than one. Power factor correction may be applied either by an electrical power transmission utility to enhance the efficiency of transmission network. In this paper three transformers of different ratings have been used which acts as inductive load each of which produce different power factor variation. The power factor of the supply line is directly monitored by the Power Meter which is connected in parallel to the supply line. The value of the capacitance (capacitor bank) required for correcting the power factor variation due to each transformer and their
combination is found out separately. Capacitor bank for the respective load is triggered by using PLC, which connects the capacitor bank parallel to the load and thereby bringing the power factor near to unity. This paper represents the most effective automatic power factor improvement and monitoring by using static capacitors which will be controlled by a PLC with very low cost although many existing systems are present which are expensive and difficult to manufacture. In this study, many small rating capacitors are connected in parallel and a reference power factor is set as standard value into the PLC. Suitable number of static capacitors is automatically connected according to the instruction of the PLC to improve the power factor close to unity. Some tricks such as using resistors instead of potential transformer and using one of the most low cost PLC SIEMENS S7-200 CPU215 DC/DC/DC which also reduce programming complexity that make it most economical system than any other controlling system.
Buy Off Grid Solar Inverter & MPPT Solar Inverter in India.pptxEnertech UPS
Discover the finest Off-grid solar inverters without battery and MPPT solar inverters equipped with power backup solutions at unbeatable prices in India. Embrace the solar revolution today with Enertech UPS, where cutting-edge technology meets affordability. Harness the power of the sun to fuel your energy needs efficiently and sustainably. Visit our website to explore our range of products and take a step towards a greener, more eco-friendly future.
URL: [https://enertechups.com/product/solar-off-grid-inverter]
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
3. Shenzhen KSTAR Science & Technology Co.,Ltd
Founded in 1993, Shenzhen KSTAR Science & Technology Co., Ltd
is a pioneer of UPS industry and a total solution provider for Data
Center Critical Infrastructure & PV Inverter Systems in Mainland
China.
KSTAR has been providing high-quality products to over 90
countries and regions worldwide, leading the industrial
development with innovation.
With a floor area of 150,000 square meters and a building area of
167,000 square meters, KSTAR R&D and manufacturing base is a
world-leading base in terms of scale and manufacturing equipment.
Company Profile
03
4. 2005 IDC Integrated System
1993 Company Established
2000 Guanlan
Industrial Park, Shenzhen
2008Certified as NationalHi-Tech
Enterprise & DC Power
Medium-power Online UPS
2001 Storage Battery
2004 High-power Online UPS
KSTAR Development history of the company
1993 Offline UPS
1995 Low-power Online UPS
1996 Entering the European &
US markets
2009 Zhongkai
Industrial Park,
Huizhou
2009 PV Inverter
2009 Estabilish 1st PV
Inverter
2010 Listed in Shenzhen
Stock Exchange
2013 Opened Guangming
Industrial Pack,Shenzhen
2013 EV Charger
2019 Established CATL
KSTAR JV
2015 National Enterprise
Technical Center
2018 JiangXi ChangXin factory
for energy storage product
2014 ESS Products
04
5. 18 Overseas Branch
Development Milestone Office and service center globally
05
40 Overseas Service
Engineers
24/7 Response and Support
Global Service Network
6. KSTAR Business scope of the company
Main Business
Data Center ESS
EV Charger
PV Inverter
ESS Solution
BTM T&D Generation
06
8. 1500V Utility PV System Solution
1500Vdc 800Vac KSG-250UH inverter is the best choice for Utility-scale PV system
08
Block Diagram of Utility PV System
9. KSG-250UH / KSG-200UH
09
Efficient & Intelligent
DC1500V, AC800V
12 MPPT
Max. input current 20A
Max. efficiency up to 99%
String Monitoring
Intelligent I-V curve scan
Remote upgrade
Grid Support
Safe & Reliable
DC & AC type II SPD
Anti-PID function
IP66 protection degree
C5 anti-corrosion
Only 2 strings per MPPT
Smart forced air cooling
AFCI function optional
Low LCOE
6.25MW block design
Support PLC communication
Support AC aluminum cable
Support Y connector
Max. DC/AC ratio up to 1.8
Active & Reactive power control
Night SVG function optional
Fast power response
LVRT/HVRT
10. Shenzhen KSTAR Science & Technology Co.,Ltd
KSG-200UH/ KSG-250UH Technical Specifications
10
Max. DC Voltage
Nominal DC Voltage
Min./Startup Voltage
Input(DC)
1500V
1500V
1080V 1080V
500V / 650V
Full Power MPPT Voltage Range
No. of MPPT
No. of Strings per MPPT
12 12
2
MPPT Voltage Range
Max. Short-circuit Current per MPPT
Nominal Output Power
60A
60A
200kW@40℃/ 175kW@50℃
Nominal AC Voltage
Max. Output Current
640~920V
640~920V
144.3A 180.4A
Max. Input Current per MPPT
Output(AC)
AC Voltage Range
Max. Efficiency 99.0% 99.0%
Euro Efficiency
Efficiency
500~1500V 500~1500V
880~1300V 880~1300V
40A 40A
2
250kW@30℃/ 225kW@40℃/ 200kW@50℃
800V/3W+PE 800V/3W+PE
98.7% 98.7%
500V / 650V
11. Product Appearance features
1500Vdc 800Vac KSG-250UH inverter is the best choice for Utility PV System
11
1. LED Panel: HMI to indicate the
present working state of the inverter.
2. Labels: Nameplate
3. Additional grounding terminals:
Used to ground the inverter.
4. Bottom handles: used to move the inverter.
5. Side handles: used to move the inverter.
6. Mounting ears: use to hang the inverter
onto the mounting-bracket.
7. Wiring area: DC switches, AC
terminals, DC terminals, and
communication terminals.
12. Efficient - 12 MPPT
12MPPT, 2 strings per MPPT Power loss due to shading effect, dust and mismatch can be effectively reduced
12
MPPT MPPT1
Shading
Effect
MPPT2
13. Efficient - Max. Input Current 20A
Max. Input Current 20A Compatible with PV modules such as 600Wp+ Bifacial modules of 210mm cell
13
550Wp(182)
PV Panel
550Wp(210)
600Wp(210)
Im
13.11A
17.29A
17.34A
Vm
42V
31.8V
34.6V
Bifacial modules with 20%backside power gain
15.2A
20.05A
15. String Monitoring & I-V Curve Scan
15
Used to check whether the state is good and whether there is a
shadow occlusion or string mismatch, to locate the fault quickly and accurately to improve O&M efficiency and reduce O&M cost
Actual Scan I-V P-V Curve
Current[A]
Voltage[V]
Power[P]
Theoretical Normal
Curve
Shadows Shade
Curve
16. Safe & Reliable – DC & AC Type II SPD
16
Built-in type II SPD on both DC&AC side, which can protect the system from surge or lightning issues
Functional Block Diagram of KSG-250UH
17. Safe & Reliable – Anti-PID Function
17
The Anti-PID function can effectively protect the PV modules from Potential Induced Degradation
Block Diagram of Anti-PID Function
18. Safe & Reliable – IP66 Protection Degree
18
IP66 according to the IEC60529 standard
Water-proof Test
Dust-proof Test
19. Safe & Reliable – C5 Anti-corrosion
20
C5 Anti-corrosion protection is suitable for coastal projects
Fastening Screw
Handle
Enclosure
Front Cover
Structural Component Material Surface Treatment
Fastening Screw SUS304 Stainless Steel Passivation
Handle
Aluminum Alloy Painting Thickness＞80μm
Enclosure
Front Cover
19
20. Safe & Reliable – Only 2 strings per MPPT
20
2 strings input per MPPT, Enough to handle reversed or short-circuit situation, no need fuses, which can reduce the
fault point and the line loss
Functional Block Diagram of KSG-250UH
21. Safe & Reliable – Smart Forced Air Cooling
21
2 Internal Fans
Smart forced air cooling guarantees 25+ years stable working
Internal Circulation Design Advanced Heat Flow Design
6 IP68 External Fans Smart Speed Control
22. Safe & Reliable – Smart Forced Air Cooling
22
Smart forced air cooling guarantees 25+ years stable working
KSG-250UH Temperature Curve KSG-200UH Temperature Curve
23. Safe & Reliable – AFCI Function
23
Support AFCI function, proactively reduces fire risk
Built-in AFCI
Function
24. Low LCOE – 6.25MW Block Design
24
13#
Oil immersed
6250kVA
15~35kV/0.8-0.8kV
COMM
Communication
Power line
MCCB 1#
800V,250A
1#
24#
1 28
1 28
1#
24#
1#
1 28
1 28
1#
24#
25#
1 28
1 28
1#
24#
14#
1 28
1 28
MCCB 14#
800V,250A
26#
ACB 1#
800V,3200A
ACB 2#
800V,3200A
13#
Aux Trafo 5KVA
Dyn11
800V/380-220V
KST-6250K
MV Station
String String Inverter LV Panel Transformer RMU
CCV 630A
Single Line Diagram of 6.25MW Block
25. Low LCOE – Support PLC Communication
25
No need arrangement of RS485 communication cable if PLC communication solution is chosen,
save cost on the communication cable
DSP
ARM
RS485
PLC
RS485 RS485
AC output Cable
ARM output two lines at
the same time, and two
line can work together.
PLC/RS485 just only
choose one
PLC transform
module
26. Low LCOE – Support AC Aluminum Cable
26
Compatible with AC Aluminum Cable Support up to 240mm²aluminum cable, save cost on the AC cable
27. Low LCOE – Support Y Connector
27
2 in 1 Solution can save cost on the PV cable and make higher DC/AC ratio compatible
+
6mm²
6mm²
-
+
-
4mm²
4mm²
4mm²
4mm²
+
-
4* MC4
4* 4mm²output wire
2* MC4
2*“Y”terminal
2* 6mm²output wire
28. 28
High DC/AC ratio up to 1.8
LCOE =
Total Life Cycle Cost
Total Lifetime Energy Production
Time
6:00
Inverter Generation Curve
System Loss
PV Module
Po
wer
18:00
Inverter Full
Power Time
Pn
1.1 Pn
Longer full power working time DC/AC
Lowest LCOE Point
LCOE
1.0
0.8
0.6
0.4
0.2
0.0
1.1 1.2 1.3 1.4 1.5
Time
6:00
Inverter Generation Curve
System Loss
PV Module
Po
wer
18:00
Inverter Full
Power Time
1.7Pn
1.8 Pn
Pn
Low LCOE - Max. DC/AC Ratio 1.8
The high DC/AC ratio makes the full power working time of the
inverter longer which can get more production, and can be used
for low LCOE plant design.
29. Grid Support – Active & Reactive Power Control
29
KSG-250UH PQ Curve KSG-200UH PQ Curve
The max. reactive power output of the inverter can reach 60% of the rated apparent power, power factor ±0.8 adjustable,
and Night SVG function is optional, saving cost on Q compensation equipment
30. Grid Support – Fast Power Response
30
PPC
Grid
Operator
Local
SCADA
Local
Controller
POI
110kV/220kV
10~35kV
Communication
Power line
Control
Value
Actual
Value
Actual Value
Dispatching
Commands
P,
Q,
Cosφ
Local
Controller
No. Sections of Communication Loop Time Delay (ms)
1 Grid Operator to PPC 1000
2 PPC to Local Controller 1000
3 Local Controller to Inverter 250
4 Response of Inverter <30
5 Inverter to Local Controller 250
6 Local Controller to PPC 1000
7 PPC to Grid Operator 1000
Power Response Time＜30ms
31. Grid Support – LVRT/HVRT
31
Integrated with LVRT/HVRT function can stabilize and support the grid, and voltage and time at different point are
adjustable according to different grid code
0 1000
150 2000
Time/ms
In Operation
20%
60%
80%
40%
100%
90%
120%
U/Un
30%
110%
500
Disconnection
Allowed
625 1500 0 1000 10000
...
2000
Time/ms
In Operation
100%
90%
120%
U/Un
Disconnection
Allowed
110%
130%
140%
500
LVRT Curve based on GB Standard HVRT Curve based on GB Standard
32. 32
KST-6250K MV Turnkey Solution
All-in-one Turnkey Solution
2*LV Panel + LV/MV Transformer + RMU + Communication Device
Convenient Transportation
20ft Standard Shipping Container
Convenient Installation
Only LV and MV cable connection needed on site
33. 6.25MVA Oil-type Transformer Technical Specifications
Rated Power
Rated Voltage
Tap Changer
LV/MV Transformer
6250kVA
15~35kV/0.8kV-0.8kV
Off-Circuit-Tap-Changing
Vector Group
Cooling Type ONAN
Tap Range
Winding Material Aluminum
Standard
±2×2.5%
Dy11/y11
No Load Loss/Load Loss Eco Design EU548(Optional)
Monitoring Oil Pressure, Oil Level and Oil Temperature
IEC60076
Oil Type Mineral Oil (PCB Free)
33
34. SF6 MV Switchgear Technical Specifications
Configuration
Rated Voltage
SF6 MV Switchgear (RMU)
V: Vacuum circuit breaker unit for transformer protection
C: Cable load break switch unit for ring network connection
D: Direct cable unit (Optional)
24kV/36kV/40.5kV
Rated Short-circuit Breaking Current
Rated Short-time Withstand Current 20/25kA
Rated Current 630A
20/25kA
Remote Control Motor Driven (Optional)
CCV
Standard IEC62271
34
35. Monitoring System Communication Connection
35
Supervisory Control Local SCADA
Optical Fiber RS485
Ethernet DI/DO
Block Communication N#
Fiber
Switch
Ethernet
Inverter 25#
RS485
RS485
RS485
RS485
RS485
RS485
Inverter 1#
Splice Box
KST-6250K
MV Station
Inverter 2#
Block Communication 1#
Fiber
Switch
Ethernet
DO
Inverter 25#
RS485
RS485
RS485
RS485
RS485
RS485
Inverter 1#
DATA
Acquisition
DO
DI
Splice Box
KST-6250K
MV Station
DI
Inverter 2#
LV Panel 2#
LV Panel 1#
DO
DATA
Acquisition
DO
DI
DI
LV Panel 2#
LV Panel 1#
Monitoring System Diagram
37. 50MW PV Plant in Anhui, China
37
Jinzhai County of Anhui Province, China
This project located in Anhui, China.
The total power capacity of this project is 50MW.
This project uses Kstar 1500V string inverter KSG-250UH.
38. 50MW PV Plant in Inner Mongolia, China
38
Bayannur City in Inner Mongolia, China
This project located in Inner Mongolia, China.
The total power capacity of this project is 50MW.
This project uses Kstar 1500V string inverter KSG-250UH.
