INTELLIX MO150 Hydran S2 gas sensor


One Intellix MO150 includes:
– 8 analog inputs (4 – 20mA or RTD PT100)
– 5 AC inputs (load and fan currents)
– 2 digital inputs (system alarms, cooling control & cooling alarms)
– Embedded functions complete with transformer models
– Historical data acquisition

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The Intellix™ MO150 transformer monitoring system, from GE Energy, is an intelligent, cost-effective solution which provides comprehensive monitoring and interactive transformer condition diagnostics, to provide early warning of incipient failure conditions. Based on field-proven technology, the Intellix MO150 uses various sensors such as the Hydran™ and state-of-the-art transformer mathematical models based on IEEE® or IEC® standards, to provide realtime information on the overall performance of the transformer to assist utility operations managers and system operators in making critical decisions.

On-line monitoring and performing real-time, transformer diagnostics can help reduce the risk of unexpected and sometimes catastrophic failures. This also helps you avoid expensive replacement and clean-up costs, unplanned downtime and overall improvement in asset. Reliability. Early detection of potential transformer problems is vital tothe lifespan extension of critical transformers and brings significant business and operational benefits:

• Reduce inspection and maintenance costs by confidently stretching out the time between routine maintenance activities

• Optimize equipment life by monitoring cooling system performance

• Reduce the probability of an unplanned outage with continuous condition monitoring

• Provides greater lifespan confidence through the use of on-line model computation providing realtime transformer condition information

• Defer major replacement costs by optimizing your transformer’s performance and extending its lifespan.

The most difficult issue in developing DCS is the development of controllers. One is the hardware, which uses a PC card and the operating system is also universal, such as Microsoft’s NT and Canada’s QNX, which are expensive and reduce profits. The second is the development of functional blocks. This is the most difficult. The number of functional blocks is almost infinite. It requires a lot of work, not only software personnel but also engineering personnel to cooperate in order to create useful functional blocks. Due to China’s previous implementation of a planned economy, there was a lack of emphasis on technical talents and a lack of private ownership in various units. It is difficult for a unit to gather so many excellent technical personnel. Not only is there a small number of software developers in our country, but they are also accustomed to programming independently and cannot communicate well with on-site technical personnel, resulting in unsatisfactory development of functional blocks. Domestic DCS not only has a small number of functional blocks, but according to user feedback, such as sequential controller functional blocks, its truth table is not as user-friendly as foreign ones. Another example is the self adjusting function block, which is generally not used on site and is not easy to use.

In short, due to the relatively small sales volume and insufficient tracking of user reactions, China still lacks a set of well-established and proprietary feature codes. This software is not for sale. Be sure to develop your own programs, as they will vary across different operating systems. This has nothing to do with the hardware of whether or not to use a controller. Using a fieldbus system also requires algorithms, while using a PC for both control and display also requires algorithms.

The configuration software used for control strategies has not yet found any issues. Another issue is the power supply system of controllers, which in China generally adopts integrated power supply. Due to the low price and low profit of DCS systems in China, DCS manufacturers do not have the funds to invest in developing power systems. The power redundancy of foreign DCS systems is shown in the following figure. When installing the two power supplies on the cabinet, it is necessary to adjust the load separately. When adjusting, the load of the two power supplies must be the same, adjusted to the same output, and then installed on the cabinet. There is a power detection board in the power system that can display the output status of two power supplies. Two can simultaneously supply power to the load. It is best to work in a balanced voltage state. After 20 years of operation, it has been proven that the power system is in good condition.
Two domestic DCS power supplies operate in redundancy, one in use and one as backup. One of the AC input power sources has a step down and can be switched to a backup power source. If the slope descends, it cannot be switched to a backup power source. This is one of the drawbacks of the power system.

The N+1 power supply scheme has not been integrated into China’s DCS system. The imported DCS adopts N+1 power supply, and there are also many problems. The meaning of N+1 power supply is that as long as the power of each inserted module is known, the required power of all modules is summed, and the power of each module power supply is fixed. The total required power is divided by the power of the module power supply to obtain the number of power supplies. If there are decimal places, they all need to be rounded to one place to become an integer. This integer is called N, and then added by one, which is called N+1.
The third issue is due to low sales. There are few third-party assistance in improving the system, such as expert systems, real-time databases, interfaces with digital instruments and PLCs, etc.