Should You Perform Relay Coordination Studies and Why?

Relay protection devices are designed to isolate fault locations in an electrical power system. These tools allow engineers to identify and monitor issues within the system, such as current changes, voltage dips, and inconsistencies with the frequency and temperature. Substation design service providers can help conduct protective device coordination to ensure the safety and reliability of your electrical systems.

The importance of relay coordination studies

Relay coordination involves surveying a facility’s electrical systems. This study analyses the impact of equipment failure, short circuits, and similar issues.

A protective device coordination study must be conducted after the initial electrical system has been designed. Moreover, it must be performed again whenever major changes and updates are made in the system.

It’s essential to conduct relay coordination studies to achieve the following:

·        Minimise equipment damage

Various electrical issues, such as loose connections, power line disturbances, and overloading, can cause equipment failure. Relay coordination helps improve the reliability of your systems, limiting damage to your equipment and minimising repair and replacement costs.

·        Reduce the risk of human injury.

Electrical hazards, such as shocks, burns, and explosions, are undoubtedly a threat to human safety. It’s important to keep your protective devices in check for better overall safety and protection against workplace injuries.

·        Guarantee continuity

System shutdowns and downtime can cost your organisation thousands. To prevent such situations from occurring, relay coordination studies must be conducted when necessary 

Effective relay coordination is critical for maintaining the safety and reliability of your electrical systems. With our substation design services, you can ensure the proper coordination and function of your protective devices, minimising the risk of personnel injury, equipment damage, and unplanned outages.

Work with us at ElegrowTechnology, a leading substation design service provider with over ten years of experience in the field. Our methods are fully NFPA compliant, and we make sure to use licensed ETAP software to provide the highest quality of services possible.

05 Reasons Your Engineering Project Needs Engineering Design Consultant

Designing, building, or renovating a structure can be challenging when you realize that what is achievable and what you want can conflict with each other. Engineering consultation is one of the smartest ways to plan and design your engineering requirements. The best time to seek this is at the start of your planning stage. During this time,mechanical, electrical, and plumbing or MEP consultants will work with you to understand your needs and recommend the best solutions that can work for your project. They will also work with you throughout the operation phase to ensure consistent planning and optimum results.

If you’re unsure about hiring engineering design consultants, here are five reasons to consider it.

1. Feasibility study 

Engineering Design Consultantcan conduct a feasibility study to analyze policies and regulations, commercial viability, and technology selections. Their support can help you make informed choices, especially when there are changes to make or determine whether to continue the project. 

2. Pre-bid engineering support 

Engineering design consultants can support developers and contractors looking to win or bid on the project against the tender or requirements from the owners. They can study the tenders or requirements, provide a risk and compliance report, and estimate costs. Consultants can also deliver engineering design requirements like the bill of quantity or materials, a single line or process flow diagram, and a general arrangement drawing.

3. Design engineering 

Engineering Design Consultantare adept in design engineering. That means they can apply engineering to design machines, products, systems, equipment, and tools during the project’s initial phase. Their assistance can help create the essential design documents before moving to the project execution or procurement. 

4. Detailed engineering

Detailed engineering is design engineering’s superset that encompasses design and other related external factors, like inspections, establishing a quality monitoring system, and basic project planning. It also includes onsite query resolution, startup support, project commissioning, and tracking of the project’s technical progress. 

5. PV solar system design 

Seasoned Engineering Design Consultantare qualified to provide solar engineering consulting. They provide solutions and apply relevant software and tools to design an effective solar energy system for your facility. 

Add value to your project.

Engineering design consultants add value to your project with their guidance, feasibility studies, standards and technology selection, design drawings, and procurement support. Their solutions can provide clarity to your stakeholders and ensure optimum results for your project with quality monitoring and inspections.

 

 

How Air and Gas Leakage Testing Helps the Overall Operation to beCost-Effective

Leaks are not only a safety hazard in an industrial compressed air system. They can also cause your facility to waste a lot of energy and make you lose 20 to 30 percent of your compressor’s output. As a result, you could be spending more money, especially when the problem persists. You might even need to buy new compressors to replace faulty ones. Avoid these issues with air leakage testing. It can quickly identify problems so you can address them immediately.

 

Testing for gas and air leaks is crucial, as leaks can negatively impact productivity and reduce the efficiency of your tools and equipment. They can decrease air pressure, causing downtime when tools function inefficiently and reducing equipment longevity. A leak can also increase the demand for air power beyond what is required, making compressors work harder and cycle more frequently and depleting the lifespan of the entire system. All these can be avoided through routine inspection, maintenance, and air leakage testing.

 

Gas and air leakage are also the reason for downtime-related losses and increased maintenance expenses. The problem reduces the longevity of compressors while requiring expensive and frequent repairs that can get in the way of your productivity and profits.

 

How is it done?

 

Gas and air leakage testing are conducted using an NL acoustic camera. It provides immediate analysis and an informative report on any leakages in the system, so you can make better operations and maintenance decisions.

 

Professionals will thoroughly analyze the compressed air systems with an ultrasonic camera to identify possible air leaks and then recommend solutions to fix the problems. Their reports are technically justified to support your decision-making.

 

Be sure to hire a competent and qualified team for air leakage testing. Reputable service providers have in-house instruments and can produce instant reports to help your business remain compliant.

 

 

The Growing Importance of Smart Grid Consulting

 

The smart grid is an innovative electric grid that allows the two-way flow of data and electricity between consumers and power utility providers. Unlike standard electric grids, it is an electricity network based on digital technology and driven by connectivity, communication, and automation. More and more organizations are seeking smart grid consulting services to become energy-independent, with a resilient and reliable power source that can save money and drive enhanced energy use decisions.

 

Do you need it?

A smart grid is critical to the global energy transition as it helps sustain long-term economic growth and provides clean energy while enabling companies to reduce carbon emissions. An awareness of rising energy costs and the effects of greenhouse gasses is not enough to think of initiatives to improve efficiency and reduce environmental impact. 

 

Qualified consultants have the knowledge and expertise to manage the complexities of relevant technologies. They can also help you understand how smart grid technologies can impact your business and navigate the opportunities with you, driving informed decision-making.

 

Perks for your business

Smart grid consulting can introduce you to all available technologies that can transform your existing grid into something more intuitive and capable of facilitating enhanced situational awareness. It may encourage operator assistance and autonomous control for better reliability and resiliency against natural disasters and component failures. A consultant can also look into your assets to maximize and make them more efficient with your grid.

 

Smart grid consultants can advise you on measures to protect against malicious attacks by recommending better It security and physical protocols. They can analyze the possibility of integrating other renewable resources with your grid, such as wind and solar, to address environmental concerns and push you to adopt green technologies.

 

Choose an experienced consultant.

Find a reputable, experienced, and technically sound company that offers smart grid consulting in your area to help you with implementation. Their expertise can be helpful when exploring the possibilities of smart grid technologies while avoiding pitfalls.

The Growing Importance of Smart Grid Consulting

Power service providers explore the latest innovations and technologies to make sure that they are choosing the right solutions for efficient and affordable power generation. With help from smart grid consulting services, they could make informed decisions where management and power distribution are concerned. Smart grid consultants deliver their services to power generation companies to help manage their systems, with consistent focus on ensuring dependability and cost reduction. As the power management process becomes digital, the more their services become more relevant to today’s world.

Two-way communication technologies, computer processing, and control systems are essential in smart grid technologies. These cutting-edge grids have advanced sensors to enable operators to effectively assess their stability, digital meters to report outages automatically, and automatic feeder switches to reroute power around issues.

That said, smart grid technology can bring advantages such as reduced electricity rates, cost-efficiency, enhanced electricity transmission, and quicker power restoration. Smart grid consulting could give power companies solutions and insights to make their electric power systems more reliable, resilient, and ready for any emergency, while reducing impact on the environment.

Up and coming smart grid technologies provide opportunities for the energy industry to embrace and delivery smart energy solutions, which are geared towards efficiency, availability, and reliability. However, it can be challenging for energy companies to do that by themselves. This is where smart grid consulting can be helpful.

Smart grid consulting could offer solutions for the effective management and digitization of smart grid systems. It’s a service that is best provided by experienced, knowledgeable, and qualified engineers who have a proven track record of successfully implementing smart grid designs for every client. These experts have extensive experience in working with various power companies and regulators on grid and policy systems. They are also dependable when it comes to finding initiative for a demand management policy, transmission studies, and integration of renewable energy.

I-V Curve Analysis for Photovoltaic System

What is I-V Curve

Power P is given by P=V*I and  Solar Modules in any given operational conditions have a single operating point where the values of the current (I) and voltage (V) of the cell results in maximum power output. An I-V curve is a graphical representation of the relationship between the voltage applied across an electrical device and the current flowing through it.

I-V curve is one of the simplest and common method to determine the functioning of an electronic device. The shape and details of the curve provides greater insights into the functioning of the electronic device.

What is I-V Curve Testing

I-V curve testing is performed to the PV Modules and Strings to determine the performance of the array in a PV system. I-V curve testing reveals about the PV Module performance and condition better than other conventional testing methods.

I-V testing is performed by applying a series of voltages to the device. The current flowing through the device is measured at each point of the voltage. The current is measured by an ammeter connected in series and the supplied voltage is measured by a voltmeter connected in parallel to the device. A source measuring unit a device capable of simultaneously supplying the voltage and measuring the current with high accuracy can also be used for measuring the I-V curve.

                          

The I-V curve (current versus voltage) represents all possible operating points of a PV module, string or array at existing environmental conditions. The curve starts at the short circuit current and ends at the open circuit voltage  as shown in Figure-2. The maximum power point, located at the knee of the I-V curve, is the operating point that delivers the highest output power. It is the job of the inverter’s maximum power point tracking circuit (MPPT) to find that point as irradiance and temperature change. The P-V curve (power versus voltage) is zero at either end or a maximum at the knee of the I-V curve.

Any impairment that affects the shape of the I-V curve as shown in Figure-3 will reduce the peak power value and diminish the value of the array. The impact of a mismatch impairment on output power is shown in Figure 4 below

                    

What is the Requirement of I-V Curve Testing

I-V curve testing helps in identifying the anomalies and pinpoint the root cause of underperforming PV Modules or Strings.

Requirement or the benefits of the I-V curve measurement are as tabulated below.

Requirement/ Benefit	Description
Reduced Test Time	I-V curve tracing measures array performance with a single electrical connection at each combiner box, and asingle measurement per string.
No need to bring the inverter on-line to test PV string performance	Traditional test methods required the inverter to be brought on-line in order to measure the operating current ofeach string under load
Reduced start-up and commissioning risk	Testing the array before the inverter is brought on-line means less risk of array-side problems showing up duringstart-up or commissioning.
More detailed measurement results	I-V curve tracing is the most comprehensive test possible for PV arrays. In addition to measuring the short circuitcurrent and open circuit voltage, it uniquely measures the maximum power point of each string. The PV Analyzer measures 100 points along the I-V curve. With this resolution, the measurement can detect more physical effects that may be degrading the performance of the system.
Efficient data management	I-V curve measurement data is saved electronically,  eliminating data recording errors.
Detailed performance baseline	PV arrays are extremely robust and reliable, but performance does gradually degrade. Occasionally a module will fail. I-V curves captured and stored at start-up or commissioning time give you a detailed baseline against which to compare future measurements over the life cycle of the PV system.
More efficient troubleshooting	Curve tracing is an invaluable tool when troubleshooting PV strings, detecting excess series resistance, low shuntresistance, module mismatch, or shorted bypass diodes directly from the shape of the I-V curve.

 

Which Stage I V Curve Can Carryout

Stage-1	Stage-2	Stage-3
-During Manufacturing -To Check the Quality Before Dispatch	-Time of Pre-commissioning -To Check the Performance Before Commissioning	-Performance Testing -To Check the Performance Periodically

Expected Results of an I-V Curve Testing

The expected results of an I-V curve are as tabulated below

Type of Losses	Probable Cause
Series Losses (Losses due to excess series resistance show up in the I-V curve as a decreased slope, or inward tilt, of the curve near Voc.)	Corroded or poorly connected array wiring
Shunt Losses (Losses due to shunt resistance show up in the I-V curve as an increased slope, or downward tilt, of the curve near Isc.)	Cracked cell or damage Cell at the time of Manufacturing, Transportation, installation
Mismatch Losses (Substantial Mismatch effect shows up as Notch or Kinks in the I-V curve.)	Shading, Uneven soiling, cracked PV cells, Shorted bypass diodes and mismatch module/Cell
Reduced Current (Reduction in the Height of the  I-V Curve can be caused by Uniform Soiling, Edge Soiling or Weather condition that reduce the Irradiance.)	Uniform soiling, edge soiling, PV module degradation or weather condition
Reduced Voltage (The Width of the I-V Curve is affected by Module Temperature. Poor Air-Circulation.)	Module temperature, Poor air circulation and issue with the heat dissipation
Series Losses (Losses due to excess series resistance show up in the I-V curve as a decreased slope, or inward tilt, of the curve near Voc.)	Corroded or poorly connected array wiring
Shunt Losses (Losses due to shunt resistance show up in the I-V curve as an increased slope, or downward tilt, of the curve near Isc.)	Cracked cell or damage Cell at the time of Manufacturing, Transportation, installation

 

Standards of I-V Curve Testing

Applicable standards of I-V curve testing are tabulated below

IEC Standard	Description
IEC 61829:2015	Photovoltaic (PV) array - On-site measurement of current-voltage characteristics
IEC 62446-1:2016	Photovoltaic (PV) systems - Requirements for testing, documentation, and maintenance - Part 1: Grid connected systems - Documentation, commissioning tests and inspection
IEC 60891:2009	Photovoltaic devices - procedures for temperature and irradiance corrections to measured I-V characteristics.

 

Limitations of I-V Curve Testing

General limitations of I-V Curve tracing are as tabulated below

Limitations	Description
Cannot be used as real-time monitoring	I-V curve testing reports data from a single point in time and is heavily dependent on environmental conditions. This cannot be used for real-time monitoring of the Module performance.
Diagnostic Information is confined to that reference time stamp	Defects can go undetected for longer periods of time until the next I-V curve tracing activity has been conducted. Hence periodic I-V curve tracing activity must be planned every 6 months to 1 year for better diagnostics.
Module Level Analysis	Performing I-V curve testing to strings would not bring out anomalies or defects of neighbouring Modules which are underperforming. However, if the neighbouring Modules exhibit considerable degradation it can be found during String I-V measurement activity.
Requires costly labour & equipment	Searching for the problem by the technicians in the site is a time instinctive process and without the support of the real time and continuous diagnostics this exercise becomes more challenging.   However, this problem can be avoided by interacting with the O&M team and identifying the low performing blocks/areas for the measurement and performing the measurement in those blocks/areas.
Cannot be used for raising Warranty Claims	The I-V curve testing only provides the information about probable degradation and cannot confirm the same. The Modules have to be sent to the Third-Party labs for ascertain the degradation.   However, I-V curve can help in identifying the defective Modules and minimize the financial risk of  losing the warranty claim which may arise if in case the Modules are selected randomly without performing I-V curve testing.

Conclusion

I-V curve testing is an affordable, compact, fast, and easy to use measurement technique. The shape of I-V curve provides critical information about potential causes of the performance problems in the Modules and provide us with preliminary data to infer the probable cause of underperformance in the PV Modules. However, only I-V testing would not be enough to determine the root cause of the performance degradation. The combination of Thermography, I-V curve and EL testing would be required for effective and reliable results. 

Source URL: https://elegrow.com/i-v-curve-analysis-for-photovoltaic-system/

How a Thermal Consultant Helps in Quality Analysis and Measurement for Technical Services

Companies in the energy, industrial, and infrastructure sectors can benefit from the expertise and services offered by leading Thermal consultants. This is especially true for organisations having requirement of Thermal energy.Thermal energy refers to the energy contained within a system that is responsible for its temperature.

You may be wondering: What is the role of a thermal consultant, and what advantages can they offer? Thermal consultants develop and analysed solutions provided By Mechanical & Electrical Engineers. Thermal Consultant Able to Analysis Different System and Equipment such as Heat Exchanger, Thermic Fluid Heating System, Boilers, HT Motors, Transformers, HVAC System, Ventilating System and Utility System. They Also Capable to Control Environment Which Require to Maintain for Process through numerical, empirical, and analytical methods. 

Here are some of the benefits of hiring a thermal consultant.

• Accuracy of information

Thermal consultants from leading engineering firms have a wealth of knowledge and experience in optimising solutions for companies in different sectors. You can trust that the reports and data they have gathered are accurate, high-quality, insightful, and reliable. 

• Prevention of issues 

One of the most important jobs of the consultants is Providing & Analysis Proper Design of Equipment and System By Thermal Engineering Aspect. Using Thermal Engineering Service, Energy Consumption of Overall Equipment & System are Easily Optimised. With Proper Optimisation of Process Parameter Any Owners will be Able to Save Lice Cycle Cost. 

• Tailored solutions

Every company has unique requirements and needs, so there is no such thing as a one-size-fits-all thermal solution. The job of the consultant is to study your technical equipment, services, and processes thoroughly to come up with tailored solutions that address your needs. 

• Optimisation of technical equipment and services

Quality thermal design and optimisation are necessary for ensuring that all machines—like boilers, furnaces, and thermic fluid heating systems—are functioning properly. This is especially crucial for heavy machinery that is in enclosed spaces or underground. Thermal consultants can create thermal designs to ensure correct application and prevent premature damage.

Source URL: https://elegrow.com/how-a-thermal-consultant-helps-in-quality-analysis-and-measurement-for-technical-services/