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Solving Complex Reservoir Management Problems Related to Construction Activities

机译：解决与建设活动有关的复杂水库管理问题

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The Campbell River project is a hydroelectric project located on Vancouver Island in BritishrnColumbia. It is a part of the hydroelectric system that is owned and operated by BC Hydro. Thernproject consists of three reservoirs connected in series; each with an individual powerrngenerating station. A number of studies have concluded that the Strathcona Dam, the mostrnupstream dam, and its key appurtenant structures require upgrading to meet the current seismicrndesign criteria. The proposed construction activities relating to upgrading the intake towerrnrequire that water levels in the reservoir be lowered and generating units taken out of service.rnThere are a number of challenges related to evaluating the feasibility of drafting the reservoir.rnThe key issues can be attributed to the nature of operations of hydroelectric projects whichrninvolves the management of reservoir outflows in conjunction with loads, market prices, requiredrnoutages and consideration of environmental, social and plant constraints. Since some of thesernparameters fluctuate continuously and are time-dependent, it follows that certain operationalrnschemes will result in more efficient uses of the water resource than others. An added challengernfor this project is that Strathcona is the upstream-most reservoir. The operation of the entirernsystem is intricately linked and the requirements and constraints of all three reservoirs need tornbe satisfied. The complexity of the project required that an optimization model be used tornprovide the optimal reservoir operations that would minimize revenue losses caused by thernrequired unit outages while satisfying social and environmental constraints. The OperationsrnPlanning Tool (OPT) Model, an in-house developed reservoir and power generation optimizationrnmodel was used to accomplish the task. The outputs from the OPT model were used to facilitaterndecisions on constructability and outage scheduling by evaluating costs, reservoir levels, andrnwhether downstream flow constraints were met. Ten different scenarios were run with varyingrnconstruction start and end times, outages and reservoir levels. The reservoir level criteria werernsuccessfully met in four model runs, albeit with some effects on downstream flow constraints.rnAverage outage lost opportunity costs due to lost generation was minimized and estimated atrnseveral million dollars. This OPT model was successful in evaluating reservoir operationrnwindows for construction activities in a complex system.
机译：坎贝尔河项目是位于不列颠哥伦比亚省温哥华岛的水力发电项目。它是BC Hydro拥有和运营的水力发电系统的一部分。该项目包括三个串联的水库。每个都有一个单独的发电站。许多研究得出的结论是，最上游的Strathcona大坝及其主要附属结构需要进行升级，以满足当前的抗震设计标准。拟议的与进水塔升级有关的建设活动要求降低水库中的水位并使发电机组停运。评估水库起草的可行性存在许多挑战。关键问题可以归结为水力发电项目的运营性质，包括与负荷，市场价格，所需的水资源中断以及对环境，社会和工厂限制因素的考虑相结合的水库流出管理。由于一些参数不断波动并且与时间有关，因此可以得出结论，某些运行方案将比其他方案更有效地利用水资源。该项目的另一个挑战是Strathcona是最上游的水库。整个系统的运行错综复杂，需要满足所有三个水库的要求​​和约束。该项目的复杂性要求使用优化模型来提供最佳的水库运营，以在满足社会和环境约束的情况下最大程度地减少因所需单位停机而造成的收入损失。内部开发的水库和发电优化模型OperationsrnPlanning Tool（OPT）模型用于完成任务。 OPT模型的输出可用于通过评估成本，储层水位以及是否满足下游流量约束条件来简化可施工性和停运调度的决策。在不同的施工开始和结束时间，中断和水库水位下运行了十种不同的方案。尽管对下游流量限制产生了一些影响，但在四个模型运行中均成功满足了储层水准。rn由于发电量的损失，平均断电所损失的机会成本得以最小化，估计为数百万美元。该OPT模型成功地评估了复杂系统中用于施工活动的油藏操作窗口。

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