健康电厂由2台发电机组组成:
健康单元1
- 28-megawatt (MW)
- 自1967年开始运作
健康单元2
- 60兆瓦
- 1998年开始烧煤, but was placed in warm-layup status until it was purchased from Alaska Industrial Development and Export Authority (AIDEA) in December 2013 and came back online in May 2015
- 该工厂自2018年9月起投入商业运营
This 50-MW power plant increases our baseload of coal-fired generation and will provide long-term stability, since coal prices over time have proven to be significantly less volatile than oil or gas prices.
目前状况:2019年容量系数约为54%. We expect that to increase as we continue to make improvements as bugs are worked out.
允许
- 2012年11月, the joint Consent Decree between Golden Valley Electric Association (GVEA), AIDEA和美国环境保护署(EPA)获得批准
- At issue was the agency’s reissue of the air permit – the last major hurdle to restarting the 健康单元2 Power Plant
- 金谷公司选择了EPA的同意令选项, 否则, there was no defined end to the air permitting process – The Consent Decree avoids what the co-op believes would have been lengthy and costly litigation
同意令规定
- GVEA agreed to install the most rigorous emission controls available on 健康单元2, with an estimated cost of $30 million – This includes an estimated $5 million for installing additional nitrous oxide controls on 健康单元1
- GVEA同意支付250美元,000 to help fund the Fairbanks North Star Borough and Denali Borough Woodstove Change-out Program – This will help alleviate the particulate matter problems in the Interior.
- GVEA协商的最低付款额为115美元,000 to the EPA – 付款s to the EPA are required under the rules of a Consent Decree
The Consent Decree does not require any mandatory shutdown dates for neither 健康单元1 nor 健康单元2. GVEA’s board of directors retains full control of decisions regarding shutdown of either plant.
重新启动健康单元2将:
- 进一步多样化我们的燃料组合，这将有助于稳定利率
- 让这三亿的州和联邦资产发挥作用
植物的历史
1989年，美国加入了欧盟.S. DOE’s Clean Coal Technology Program selected Healy as a demonstration plant to use experimental technology to burn waste coal. 健康单元2 began burning coal in 1998 and generated power intermittently through 1999 in its testing phase. 当时该电站未能通过为期90天的商业运行测试, 2000年初，它被置于热上铺状态. AIDEA和GVEA之间解决争端的谈判没有成功. 2005年，AIDEA对GVEA提起诉讼. 收购电厂结束了这场诉讼.
1993年最后环境影响报告书:
建设资金
- 能源部- 1.2亿美元
- 阿拉斯加议会——2500万美元
- AIDEA - 1.5亿美元
- GVEA和Usibelli煤矿- 1000万美元外加实物捐助
时间轴
1989
- DOE selected 健康单元2 (formerly HCCP) as a Clean Coal Technology Program demonstration plant
1995 to 1997
- 健康2号单元建成
1997 to 2000
- Healy 2演示运行(失败)
2000
- 植物放置在暖铺状态
2009年2月
- GVEA和AIDA达成销售协议
2009 to 2013
- Negotiations were finalized in December 2013 when the purchase agreement was signed on December 4
2014 to 2015
- 经过18个月的改造和翻新，健康2号机组, 其中包括额外的污染控制措施, 更新系统和替换过时的控制, 5月28日, 2015, 8月4日，该工厂自2000年以来首次点火, 2015, 健康2号机组是烧煤的
2016 to 2017
- 3月3日, 2016, 当工厂处于启动状态时, 从石油转向煤炭, 健康2号机组的给煤系统发生火灾/爆炸
- 11月2日, 2016, 健康单元2 suffered damage to the coal feed system due to spontaneous combustion, 业内通常称之为“泡芙”
- 在GVEA的8月28日, 2017年董事会mg冰球突破豪华版下载, the directors authorized moving forward with proposed modifications to 健康单元2’s coal feed and fuel transport system
- Both Unit 1 and Unit 2 have undergone significant environmental upgrades – Unit 1 was successfully commissioned six months early – Unit 2’s environmental controls are installed and will be commissioned once the plant is back online, 预计在2018年秋季
2018
- January to June: Demolition of old fuel transport system and construction/installation of the redesigned system
- July 2: First-fire on oil (ignition fuel), followed by system startup and testing
- 7月28日:第一次在煤上点火，随后进行调试和测试
- August 16: Achieved full-load operation, followed by additional tuning and testing
- September 14: Successfuly completed 30-day 85%-availability run to achieve commercial operation/acceptance
- October 10: Planned outage to install SCR catalyst (the final emission control component)
- 11月12月:商业运营
2019
- 1 - 4月:商业运营
- 4月:计划停机，进行年度维护
- 阿美:恢复商业运作
- 6 - 8月:工厂正常运转, 虽然经常在减少负荷, due to issues with the baghouse and the Flue Gas Desulferization (FGD) system
- September: Plant offline for 2 weeks to replace baghouse bags and make repairs to slag drag chain
- October 9 to 15: Repairs made to slag drag chain and wet ash bucket elevator
- 10月21日至22日:斗式提升机维修
- November: Original system design led to lime contamination of boiler water while plant was offline – Required a week of flushing the boiler before re-firing
- December: Coal quality issues (wet coal with low BTU) and continued slag drag issues
2020
- 1月25日至2月6日:离线修渣拖
- 2月至3月:良好运行，52天在线
- 4月至5月:运营, 但继续与渣拖问题作斗争, 斗式提升机和烟气脱硫系统
- June 8 to 17: Dynamic classifier bearing failure; plant at half-load
- July to August: Planned outage – Benetech performed major upgrades and/or repairs to wet ash system, 其中包括拖渣输送机, 底灰输送机和斗式提升机- GVEA修复输送输送机
健康直到2个视频
煤灰处理系统
健康第一单元: 原煤灰处理系统, 建于90年代, 由一个初级沉淀池(灰池)组成, 再循环池, 紧急溢流池, 和灰干燥区(根据CCR规则定义为CCR堆填区). All three ponds were incised with storage volume less than 20 acre-feet and height less than 20 feet. Coal ash from the Ash Pond was placed in the Ash Drying Area where excess water drained and evaporated prior to transport and disposal at Usibelli Coal Mine (UCM). The ash settling ponds and the Ash Drying Area make up the four CCR units regulated under the CCR Rule. 2021年1号机组的煤灰沉淀池关闭后, coal ash generated by Unit 1 is directed to Unit 2’s mechanical drag conveyor systems. Combined coal ash from the 2 units is conveyed to silos for intermediate storage prior to offloading for transport and final disposal at UCM.
健康第二单元: A dry handling process and mechanical drag conveyor system is used to manage the generated coal ash. Unit 2’s coal ash is intermediately stored in silos prior to transport and disposal at the UCM.
Interties
北部联锁电力网
GVEA在2003年10月为北方互联注入了活力. This 97-mile, 230-kilovolt line is one of GVEA’s initiatives to improve system reliability. 这条输电线从希利到费尔班克斯. 金谷是阿拉斯加互联网络的北部控制点, 哪个mg冰球突破豪华版下载于大多数铁路带社区. This transmission line extends between Willow and Healy, along the Parks Highway corridor. Through the Alaska Intertie, GVEA is connected to Chugach Electric Association.马塔努斯卡电气协会.霍默电气协会. 以及苏厄德市的电力系统.
这两家公司都可以增加GVEA 296兆瓦的发电能力, 另外还有70兆瓦来自南方公用事业公司.