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What are the most effective protection scheme maintenance practices?

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Protection schemes are essential for ensuring the safety and reliability of power systems. They detect and isolate faults, prevent equipment damage, and minimize service interruptions. However, protection schemes require regular maintenance to perform effectively and avoid malfunctions. In this article, you will learn about the most effective protection scheme maintenance practices, based on industry standards and best practices.

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Andrey Maiorky

TESLA ? Automation | Painting Processes | Robotics | PLC | Electronics
Jorge Carrascal Acevedo

Mechanical Engineer | PMP |
Muneer Ahmed Anjum

Maintenance Foreman Mechanical

1 Maintenance objectives

The main objectives of protection scheme maintenance are to verify the correct operation and settings of the protection devices, to identify and correct any defects or deterioration, and to update the documentation and records. Maintenance activities should be planned and scheduled according to the criticality, complexity, and condition of the protection schemes, as well as the availability of resources and outage opportunities. Maintenance objectives should be aligned with the system protection philosophy and the asset management strategy.

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Andrey Maiorky

TESLA ? Automation | Painting Processes | Robotics | PLC | Electronics
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We should always have in mind that the maintenance system is a living thing, which implies changes, adaptations. Revisiting and rethinking about maintenance plans that are already running is crucial to your competitive scenario, as the continuous improvement is one of the keys to success.

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Muneer Ahmed Anjum

Maintenance Foreman Mechanical
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The primary goal of maintenance is to ensure equipment health and continuous availability for operations. This requires a highly skilled team employing practical strategies. Establishing a supportive system is essential for the maintenance team to execute tasks accurately. Effective coordination between teams enhances overall performance, while it's crucial to steer clear of overly complex procedures to achieve our objectives.

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Ano Tiburce KOULA?

Technical Manager ( IT, Print Production & Maintenance)
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L’objectif premier de la maintenance est de maintenir les équipements en production en évitant les pannes. La fiabilité des équipements est donc une priorité pour la performance industrielle. Il existe deux types de maintenances: La maintenance préventive et la curative. Il est aussi très intéressant d'intégrer la GMAO a la maintenance conventionnelle. Elle permet aussi d'avoir une large vue sur toutes les activités liées a la maintenance et aux stock de pièces de rechange.

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Khalfan Said

MTL
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What I have experienced, the PMs and Predictive Ones are essential.especially with the hi Tech we have today in the industry.

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DAN C JAISON

M.E.P Design Engineer
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Effective electrical protection scheme maintenance practices are crucial for ensuring the safety and reliability of electrical systems. These practices involve a combination of preventive maintenance, testing, and documentation to ensure that protection devices function correctly and respond appropriately to abnormal conditions. Listed below are the some of the most effective electrical protection scheme maintenance practices that i follow: ●Developing a Comprehensive Maintenance Plan ●Conducting Regular Visual Inspections ●Performing Functional Testing ●Calibration of Protection Devices ●Documentation of schemes ●Following Manufacturer Recommendations ●Utilization of Specialized Tools and Equipment ●Monitor System Performance

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2 Maintenance methods

Different methods of protection scheme maintenance are employed, depending on the type and technology of the protection devices. Visual inspection involves checking the physical condition, wiring, connections, labels, and indicators of the protection devices. Functional testing requires applying signals or simulating faults to verify the response and operation of the protection devices and their associated components. Calibration involves measuring and adjusting the accuracy and sensitivity of the protection devices with standard instruments and procedures. Setting verification involves comparing and confirming the actual settings of the protection devices with design specifications and latest revisions. Lastly, performance analysis requires reviewing and evaluating historical data, events, and records of the protection devices to identify anomalies, trends, or deviations.

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Jorge Carrascal Acevedo

Mechanical Engineer | PMP |
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If we want to ensure reliability, we must perform regular inspections and tests, calibration checks, stay up to date with software, and perform simulations and tests. Periodic inspections and functional tests help identify problems early, while calibration checks maintain device accuracy. Staying up to date with firmware and software updates improves performance and security. Event analysis allows investigation of failure events and simulations verify the effectiveness of the protection scheme under various conditions.

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Víctor Plasencia

Jefe de equipo mantenimiento Eléctrico EDISON NEXT SPAIN
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Las gamas de mantenimiento preventivo deben incluir inspecciones visuales. Las variables electromecánicas deben estar monitorizadas por sistemas de gestión, en tiempo real, o scadas. Los eventos configurados preventivamente deben adveritr a los operadores de las desviaciones de los límites o fallos puntuales. Se guardarán históricos de las variables a demanda, para hacer análisis de las mismas.

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Dennis Mwirigi

Biomedical Engineer | Enthusiast Entrepreneur | Blogger | Gamer
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Begin with regular inspections, checking for signs of wear, corrosion, or loose connections in protective devices. Perform routine testing to ensure relays and protective devices respond as expected during simulations. Keep meticulous records of maintenance activities and test results for future reference. Implement a schedule for preventive maintenance, including cleaning, calibrations, and firmware updates. Provide continuous training for maintenance staff to stay updated on the latest technologies and industry best practices. Finally, conduct regular system audits to identify potential vulnerabilities and address them promptly, ensuring a robust and reliable protection scheme.

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3 Maintenance tools

The tools required for protection scheme maintenance vary depending on the method and the device. Test sets, software, meters, instruments, and documentation are some of the most common tools used. Test sets generate and measure electrical signals such as voltage, current, frequency, and impedance. Software programs interface with the protection devices to monitor, control, configure, and communicate with them. Meters measure electrical parameters such as voltage, current, resistance, and power to calibrate and verify the protection devices. Instruments measure physical parameters like temperature, pressure, and vibration to inspect and assess the condition of the protection devices. Finally, documentation provides information and guidance for the maintenance of the protection devices in the form of manuals, diagrams, reports, and records.

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Muneer Ahmed Anjum

Maintenance Foreman Mechanical
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Utilizing maintenance tools is instrumental for precise task execution. The significance of software-based tools lies in their ability to aid in record-keeping, tracking, and setting as well as calculating targets.

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4 Maintenance frequency

The frequency of maintenance for protection schemes depends on several factors, such as the type, age, and technology of the protection devices, the operating environment and conditions, the system criticality and availability, and the regulatory and contractual requirements. Generally, maintenance should be based on a risk-based approach to prioritize protection schemes with the highest impact on system reliability and security, and a condition-based approach to monitor performance and degradation. Additionally, maintenance should be performed at regular intervals according to manufacturer's recommendations or historical data.

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5 Maintenance challenges

Protection scheme maintenance can be hindered by several challenges, such as resource constraints, outage limitations, technology changes, and data management. For example, there may not be enough personnel, equipment, or budget to perform maintenance activities for large and complex protection schemes. Additionally, it can be difficult to obtain and coordinate outages for critical and interconnected protection schemes. Furthermore, the rapid evolution and innovation of protection devices and technologies require constant updating and upgrading of the maintenance tools and skills. Finally, the huge amount of data generated by the protection devices must be stored, analyzed, and reported effectively.

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Muneer Ahmed Anjum

Maintenance Foreman Mechanical
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Overcoming maintenance challenges is possible through effective planning, unwavering commitment, seamless coordination, and robust support from management.

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Rami Al-Kurdy, FMA?

Facility Manager III at BGIS
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One of the biggest challenges of maintenance is constrained resources, especially financial resources. You will have to come up with maintenance plan and prioritize the tasks thats most crucial. You also need to understand the expectations of the stakeholders, this will help in budgeting.

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6 Maintenance benefits

Protection scheme maintenance offers several advantages for the power system and its stakeholders, such as improved reliability, enhanced safety, increased efficiency, and compliance. This type of maintenance reduces the probability and frequency of protection failures, misoperations, or false trips, which can cause system instability, equipment damage, or service interruption. Additionally, it prevents or minimizes the hazards and risks associated with protection faults, such as electric shock, fire, or explosion. Furthermore, it optimizes the performance and lifespan of the protection devices while reducing the maintenance costs and downtime. Finally, it helps to meet regulatory and contractual obligations and standards for protection scheme maintenance and avoid penalties or liabilities.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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LEOPAULD NDENKO TAMATCHEU

Pigging and Nitrogen Services / Electro Technician / Electrician
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La maintenance des systèmes de protection est là clé de toutes les maintenance pour assurer la protection des personnes et des équipements électriques tout en assurant la longévité des équipements.

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What are the most effective protection scheme maintenance practices?

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1 Maintenance objectives

2 Maintenance methods

3 Maintenance tools

4 Maintenance frequency

5 Maintenance challenges

6 Maintenance benefits

7 Here’s what else to consider

Power Engineering

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What are the most effective protection scheme maintenance practices?

1

2

3

4

5

6

7

1 Maintenance objectives

2 Maintenance methods

3 Maintenance tools

4 Maintenance frequency

5 Maintenance challenges

6 Maintenance benefits

7 Here’s what else to consider

Power Engineering

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