The modern electrical grid is under unprecedented pressure. Aging infrastructure, rapid grid expansion, integration of renewable energy sources, loss of expert knowledge and the increasing demand for data-driven operations are forcing utilities and large-scale facilities to rethink how they manage their assets and allocate budgets. In this landscape, the traditional “time based and reactive maintenance” and “run-to-failure” model is no longer a viable strategy; the financial and operational reliability stakes are simply too high.
Asset Performance Management (APM) has emerged as the critical solution for navigating these challenges. By moving beyond simple time based and reactive maintenance schedules to a unified, proactive and predictive approach, APM empowers organizations to maximize the lifespan of their electrical infrastructure, ensure safety, and maintain the high availability that modern society demands. This article explores the mechanics of APM, its specific application to electrical assets, and the tangible benefits of adopting a holistic management strategy.
What Is Asset Performance Management?
Asset Performance Management (APM) is a strategic solution ecosystem of software and services that optimizes the performance, reliability, and availability of physical assets. While traditional maintenance focuses on time based servicing and repairing what is broken, APM focuses on assessing asset health to recommend servicing when required and prevent unplanned outages and failures in the first place.
At its core, APM integrates data from various sources (monitors, sensors, historians, Enterprise Asset Management (EAM) systems, and inspection reports) to provide a comprehensive view of asset health across the entire fleet. It leverages built in advanced analytics based on expert industry knowledge, artificial intelligence (AI), and machine learning to predict failures before they occur, allowing maintenance teams to plan, prepare and intervene at the optimal moment.
For electrical infrastructure, this means moving away from time-based and reactive maintenance (fixing things on a calendar schedule regardless of condition or when they fail) to condition-based and predictive maintenance. This shift reduces unnecessary work on healthy assets while ensuring that degrading assets receive attention before they cause outages or it has a significant negative impact on the assets aging profile.
The Pillars of APM for Electrical Assets
A robust APM strategy for electrical infrastructure is built on three foundational pillars: data integration, analytics, and action.
1. Unified Data Integration & Fusion
Electrical grids generate massive amounts of data. Transformers, switchgear, circuit breakers, and relays all produce distinct measured signals related to thermal performance, dissolved-gas analysis (DGA), reaction time, component ware, capacitance, power factor, partial discharge, and load capacity to name but a few. However, this data often resides in system and departmental silos. An effective APM solution acts as a centralized hub, ingesting this disparate data to create a “single source of truth” data lake. By fusing the data to create digital twins, virtual representations of physical assets, operators can simulate and predict performance impacts and visualize the real-time condition of the entire fleet.
2. Advanced Analytics & Diagnostics
Data alone is noise and can be confusing and time consuming to interpret; analytics provide the key to transforming data into information. APM platforms utilize sophisticated algorithms to analyse historical trends, online inputs and recent inspection results. For example, in a transformer, an APM system can cross-correlate ambient temperature, load, oil temperature and DGA to detect anomalies that a simple threshold alarm would miss. It can also take into consideration the unique characteristics of the asset and its operation information automatically adjusting the analytic to factor in the impact on the analysis. These insights allow engineers to identify specific failure modes, such as insulation degradation or contact wear, with high precision as well as the likelihood of the asset experiencing such issues. The APM solution can also provide expert diagnostic tools that allow subject matter experts to perform their own evaluation of assets as a second opinion to validate the results of the system.
3. Actionable Intelligence & Situational Awareness
The goal of APM is to drive better decisions and deliver on targeted business outcomes. The solution transforms analytical insights into actionable information, alerts and key performance indicators (KPI’s) such as Risk Indexes, Probability of Failure and Consequence of Failure to name but a few. Instead of presenting a raw data stream, the APM dashboard can flag a specific substation as high-risk of failure over the next 30 days due to the condition of one or several assets within, prompting the creation of a work order in the EAM system, which can be automated. By integrating with network management modules, APM has situational awareness on the impact and consequence of an asset failure, thus ensuring this important information is factored in. This seamless end to end workflow ensures that insights lead directly to direct action and optimised risk mitigation.
Why Electrical Infrastructure Needs Specialized APM
Generic APM tools often struggle with the specific nuances of electrical assets. Electrical infrastructure operates under unique constraints and failure modes that require specialized attention. Often electrical assets have few to no moving parts, making the analysis of the components more complicated than simply measuring the number of mechanical operations that have occurred. Hence in order for APM to properly evaluate electrical assets it must consider chemical, electrical, thermal, visual and acoustic data. The analysis of such data requires in-depth knowledge to be built into the APM of what changes to these properties mean. As an example; when corona partial discharge is determined what does it means in terms of dielectric changes, insulation loss, loose connections etc. The APM solution can provide clear information using FMEA techniques on the root cause of the issue and provide recommended actions which can be remedial or instructions of further investigations required.
Managing Aging Infrastructure
Much of the world’s electrical infrastructure is nearing or has surpassed its intended design life. Replacing these assets en masse is financially impossible, as much as we would like to we cannot rip out what is there and start again. Furthermore, just because an asset is old or has surpassed its intended useful life does not mean it needs replaced. Many older assets used in the power grid were over engineered meaning they have the potential to reliably last longer than originally thought. APM provides the visibility needed to understand the remaining useful life of an asset, its reliability and help safely extend the life of these aging assets. By monitoring and assessing critical parameters like paper insulation aging in transformers, utilities can prioritize capital replacement for the assets that truly need it, while safely operating the assets that remain in good condition. Organisations can also take actions to help extend an assets life by evaluating the information provided in the APM. Using the example of a transformer, this can be done by taking actions such as removing moisture from oil if APM indicates it is excessive, changing the oil type to conserve older paper insulation or improving the cooling system if APM indicates its inefficient.
Integrating Renewables and Distributed Energy Resources
The grid is no longer a one-way street with consistent and predictable power flow. The influx of distributed power generation from renewable sources such as solar, wind, and battery storage creates bidirectional power flows and variable loads that stress legacy equipment in new ways. To meet their carbon footprint reduction targets, many countries are rapidly increasing their renewable energy generation capabilities and managing the impact on the existing grid is paramount. APM helps operators understand the impact of these fluctuating loads and stresses on asset health, ensuring that the integration of green energy does not compromise grid reliability. Integration with weather information systems and data fusion allows the APM software to consider potential increases in power flow and load due to renewable generation capability at any point. It can then use this information to predict the load expectation of the assets and potential impact on the assets aging profile or risks due to overloading.
Prioritizing Safety and Compliance
Electrical failures can be catastrophic, posing severe risks to personnel, the general public and the environment. APM promotes a safety-first mindset by identifying hazardous assets and conditions, such as arc flash hazards or potential explosions from severe dialectic breakdown of insulation, before they manifest. APM can categories the risk of such events happening based on the FMEA evaluation of the asset and the symptoms it is displaying. Ensuring that assets which pose a high risk of a catastrophic event have preventative measures and an exclusion zone around them until remedial action is taken. Furthermore, APM simplifies regulatory compliance by maintaining detailed, auditable records of asset health and maintenance activities. This information is vital in ensuring organisations do not face any regulatory penalties and fines if there are questions on compluance. Compliance with cyber security regulations and standards is also extremely important especially with the rise in cyber attacks targeted at a countries infrastructure. APM solutions must ensure they do not introduce a vulnerability within the utilities IT or OT networks. The APM software must be regularly evaluated using technics such as static code analysis, penetration testing and vulnerability scans to identify Common Vulnerabilities and Exposures (CVE’s). It must also include mitigations to prevent misuse such as access control, encryption, password complexity and traceable action audit logging to name but a few.
The Operational Benefits of APM
Implementing a holistic APM strategy delivers measurable operational, financial and reputational improvements aligned with business outcomes.
Increased Reliability and Uptime
By predicting failures, organizations can schedule maintenance during planned outages rather than reacting to emergency unplanned outages. This shift significantly improves system reliability metrics (such as SAIDI and SAIFI) and ensures a consistent power supply for end users, helping improve the organisations reputation. By understanding the current condition of assets and performing proactive maintenance, organisations can also reduce planned outage or service time of equipment. If an asset is showing symptoms of a problem, the earlier intervention and remedial action is taken the less time it takes to correct the issue. The longer an issue festers the worse it becomes leading to longer repair times, in some instances repairs that could have been done onsite now require assets to be brought into a repair facility at considerable cost to the organisation. Many organisations rely on network redundancy to ensure they can maintain power supply for their customers should an event occur. However as can be seen with recent events that attracted global attention the redundancy measures can also fail, hence it is better to maintain a reliable network by ensuring the health and condition of critical assets.
Optimized Maintenance Costs
Preventive time based maintenance often results in “over-maintaining” assets, wasting labour and parts on equipment that is functioning perfectly. In an effort to meet operational expenditure (OPEX) budget reductions and constraints, organisations are forced to do more with less. This can cause serious problems in an organisation as labour is stretched and visibility of the most important and impactful maintenance actions to be performed does not exist. APM enables condition-based proactive maintenance, ensuring OPEX budgets are optimized by maintaining the correct inventory and that labour resources are deployed only where necessary. This approach can reduce maintenance costs significantly by reducing stock inventory and eliminating unnecessary site visits and interventions. The time spent by labour performing maintenance is also optimised as the APM solution provides the recommended actions to be taken, reducing investigation time.
Improved Capital Planning
APM removes the guesswork from capital expenditure (CAPEX) planning, ensuring just in time asset replacement. Many organisations struggle to understand at what point to replace an asset or to continue to repair the asset. With precise information on the health and remaining useful life of every asset in the fleet, leaders can make evidence-based decisions about repair versus replacement. This ensures that capital is allocated efficiently to areas of highest risk and return. Long lead times for critical assets such as power transformers makes it extremely important to know when a replacement asset is required. By providing the residual life estimate for assets, organisations can be better prepared and plan when orders need to be placed and ensure labour resources are also scheduled and available.
Transitioning to a Predictive Future
Adopting APM is a journey, not a one-time software installation that requires input and consideration from many stake holders within an organisation. From the chief operating officer to the asset engineers, each unique persona has different requirements and expectations. It begins with identifying current challenges and key business outcomes the organisation wants to achieve. Followed by an evaluation of the critical assets to be assessed along with the data availability and source. The IT architecture and integration requirement is also extremely important to ensure the solution can be deployed, navigate the IT and OT infrastructure in order to engage with the various software and systems and finally flexibility to scale as the organisation progresses along its APM journey.
Organizations should start by focusing on areas of concern and assets with the greatest impact on reliability and safety, such as medium (MV) to high-voltage (HV) transformers, circuit breakers, switch gear and transmission lines.
As the ecosystem matures, the focus can expand to include lower-voltage (LV) and less critical assets along with integration into other systems to provide a more comprehensive and integrated view of the power grid. The key is to establish a unified digital foundation that enables data to flow freely among various departments such as operations, maintenance, and engineering teams ensuring everyone has access to the right information at the right time.
In a world where energy stability and reliability is paramount, APM provides the clarity and control needed to manage the increasingly complex electrical infrastructure. By leveraging data and built in expert analytics to predict outcomes, utilities and businesses can ensure their operations are safer, more efficient and reliable, and they are better prepared for tomorrow’s challenges.
Ready to take the first step towards a predictive future? Book a demo today to see how APM can transform your operations, enhance reliability, and prepare your organization for tomorrow’s challenges.