In order to improve the efficiency of their wind power system's power transmission, our customer would like to monitor their power transformers, which respond to pull high/low power voltages at the same power level as the electrical power network. In addition, monitoring of the power transformers helps to ensure it operates correctly and prevents system breakdowns.

- Monitoring of each wind turbine's power transformer and connecting them by wired Ethernet
- Real-time monitoring, temperature display, and pressure and leak data to be available on the HMI in the central control room
- System must be stable, even when there are more than 100 devices installed

Wind power is an exceptional way to generate green power to reduce environmental pollution. In recent years, renewable energy such as wind power has become more ubiquitous than ever. Just as wind is unpredictable and unstable, so is the power generated from wind turbines, and such fluctuations and interruptions can cause instability in the power grid. A drop in power at one point can cause power surges elsewhere that cause switches to short circuit to counterbalance for the surges, which can result in blackouts. To neutralize these fluctuations, wind-generated electricity must first go through a transformer to even out the power voltage prior to transmission. Power transformers are indispensable to power systems since they ensure reliable operations. To avoid power failures, it is imperative to monitor the status of the transformers as well as the oil temperature, and gas pressure and leaks.

Inside the wind turbines, there is not enough room to house too many remote I/O modules because the installation space is very limited. Most I/O modules on the market are equipped with either analog inputs or digital inputs only; Moxa's E1242, however, provides both analog and digital inputs in the same module. Temperature transducers can be used to transfer 4 to 20 mA signals. The main benefit of this is that Ethernet IP address resources and overhead for additional modules are reduced.

In addition, the E1242 supports Moxa's unique Active Tags function, which does not poll data from the host PC, but rather the Active Tags “push” data to the host PC when there are changes. This type of event-driven tag status updates result in an I/O response time that is 7 times faster. Moxa's Active Tags, compared with the existing “polling” method, will not only provide stable and reliable communications, but will also significantly reduce Ethernet Traffic and the host PC's loading. With Moxa's Active Tags, I/O access is more precise, and the cost of communicating with remote I/O devices is substantially lower.

System Diagram:




Project Applied:
ioLogik E1242
- Analog Inputs and Digital Inputs in one compact module
- Wide Operating Temperature: -40 to 75°C
- Active Tags support MXIO to reduce the PC's loading

- A competitively priced all-in-one solution that's easy to deploy.
- Easy data collection and data updates to the central host via Active Tags that support MXIO