Introduction
Geothermal power plants create electricity from geothermal energy. These power plants are similar to other steam turbine station; however their heat source is that of the earth's core. The created steam is used to turn the turbine for the production of electricity. Technologies include Dry steam, Flash steam and Binary cycle power stations with Binary cycle being the most common geothermal plant in current production. In the process of geothermal power generation the facility needs to monitor various processes, as in this case steam line pressure sits in remote from control room's location.

Benefits
- Reduced installation cost (CAPEX), high gain antennas allow remote monitoring up to 5km
- Improved future flexibility & scalability with ISA100 Wireless open and scalable network design
- Minimized infrastructure with long battery life (10 years with 30sec updates), reduced maintenance costs and effort based on flexible device functionality
- Reduced patrol rounds by monitoring steam pressure measurements located 2km away from control room
Requirements
To replace existing pressure gauges on production wells with wireless pressure transmitters for online monitoring back at the local control room which can be relayed to operations. Measurement points are located in dense forest where the terrain slope is 1:20 which increased the difficulty of wireless communication.
Challenges
- Long Communication Range in dense forest
- Antenna propagation angle

Solution
The YFGW410 / 520 was installed neat the control room, fitted with a 6dBi antenna to enable the long communication hop to the steam. The YTA510 wireless temperature transmitter also was fitted with a remote high gain antenna to act as a repeater in order to extend the coverage of the measurement points. The EJX110B wireless pressure transmitters were directly mounted at the required measurement points. Remote antenna cables were used for Sky Mesh approach to avoid forest obstacles with angled antennas for sloping signal propagation to match the grade of the environment.
Conclusion
- High gain antenna provided exceptional performance where only one repeater could achieve reliable communication with gateway covering the required distance.
- Field patrol interval was extended from daily monitoring to monthly in order to verify the site status and security.
- The wireless network enabled easy expansion of additional wireless measurement points.
Yokogawa has a proven track record of delivering reliable, scalable and open technologies for a century. ISA100 wireless solutions address the specific challenges of the industrial automation industry while lowering cost ownership for our end users and maximizing their return on the investment.
行业
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可再生能源
使用可再生能源可以保护环境,使社会和工业更接近实现可持续性发展的目标。然而与传统能源相比,在其快速发展的道路上存在着一些阻碍,如生产成本较高、电网供电不稳定等。作为控制系统和仪表行业的企业,横河电机一直致力于帮助各行业客户实现稳定运营、提高工厂生产效率。基于VigilantPlant实现平稳运营的理念,横河电机的解决方案可促进可再生能源的使用。
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地热发电
地热能不受天气条件的影响,整年都能进行稳定的电力供应。此外,由于没有燃料在地面上燃烧,并且只释放出极少量的二氧化碳,因此环保性非常高。沿着环太平洋带(也称为“太平洋火圈”),在日本、菲律宾、印度尼西亚、新西兰、墨西哥、哥斯达黎加和美国等国家以及位于其他地热活动区域的冰岛、土耳其和意大利等国家都有丰富的地热资源。截至目前,横河已在日本、东南亚等地参与了30个地热发电项目,提供了多种测量和控制技术,提高了地热发电系统的可靠性和维护效率。
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电力
在20世纪70年代中期,横河电机发布EBS电子控制系统,从而正式进入电力行业。从那时起,横河电机一直坚持不断发展技术和能力,旨在为客户提供更好的服务和解决方案。
横河电机凭借着电力解决方案网络,在充满活力的电力市场中发挥着积极的作用。通过结合资源和行业知识,使得团队合作更加紧密。横河电机的电力专业人员们将携手合作,为客户提供适合其复杂要求的解决方案。
相关产品&解决方案
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EJX110B无线差压变送器
高性能无线差压变送器 EJX110B 采用单晶硅谐振传感器,适用于测量液体、气体或蒸汽流量以及液位、密度和压力。
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YFGW410现场无线管理站
YFGW410现场无线管理站具备符合ISA100.11a标准的系统管理/安全管理/网关功能,与现场无线接入点(YFGW520)和/或现场无线媒介转换器(YFGW610)组合使用,可构建完整的现场无线系统。
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YFGW520现场无线接入点
YFGW520现场无线接入点具备基于ISA标准的骨干路由器功能,与现场无线管理站(YFGW410)和/或现场无线媒介转换器(YFGW610)组合使用,可构建完整的现场无线系统。
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YFGW710 Field Wireless Integrated Gateway
YFGW710 Field Wireless Integrated Gateway comply to the wireless communications standard ISA100.11a for industrial automation of International Society of Automation (ISA), and relays ISA100 Device data to the system via integrated backbone router. Single unit of YFGW710 has integrated functions of backbone router, system manager, security manage, and gateway.
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YTA510无线温度变送器
高性能温度变送器YTA510接收热电偶、RTD、欧姆或DC mV输入信号。该变送器通过无线信号传输过程变量以及设定参数。该变送器采用内置电池,由于无需硬接线,因此可降低安装成本。通信规格以ISA100.11a协议为基础。
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现场无线
无线解决方案的灵活性可减少对基础设施的投入,同时可以对工厂运营有更深入的了解。