How to deploy the appropriate installed capacity battery energy storage system based on modeling planning


  Author :Iflowpower – Portable Power Station Supplier

With the proportion of renewable energy power generation in the power system, the battery energy storage system has been an effective way to deal with renewable energy power generation, but it is still unclear how many installed capacity to be deployed can truly improve power reliability. When you asked how to plan to deploy battery energy storage systems in the future power combination, public utilities, resource planning consultants, and researchers' answers: this depends on detailed situations. Its key variables are the pre-renewable energy power generation facilities of the power system and the penetration rate of battery energy storage systems.

However, in future energy combinations that are dominated by renewable energy, planning deployment of appropriate installed capacity battery energy storage systems can reveal the key insights of energy storage systems supply power reliability. Danielsteinberg, Senior Researcher, US National Renewable Energy Laboratory (NREL), said at a web seminar held at the California Energy Association (CESA) on May 22 that planners are increasing reliability in obtaining battery energy storage systems Substantial progress has been made. Some planning is actively improving short-term energy storage technology, while long-term energy storage technology is also in development and detection.

Bradalbert, Vice President, Executive Vice President of Exporter's Public Administrator APS, said that the company plans to deploy solar energy + energy storage projects instead of natural gas power generation facilities, and use multiple approaches to plan its energy storage demand. He said, "There is no perfect way today, just like we can't predict the same new crown virus epidemic in 2020. Therefore, we must make a judgment of strategic planning.

"In some cases, more renewable energy may be more cost-effective than deploying energy storage systems. As the cost declines and renewable energy and energy storage systems are increasingly used in power systems, the reliability value of the battery energy storage system has changed significantly. Some stakeholders say that such precise decomposition can simplify scale decisions like effective load capacity (ELCC).

But some people think that this calculation is not able to replace expert judgment. (Note: Effective Carrier Capacity (ELCC) is an indicator of load carrying capacity describing renewable energy power generation facilities. From the tendering to planning although public utility companies have long recognized the value of pumping energy storage, compressed air storage, and aggregated solar heat storage power generation, these energy storage technology has not proved cost-effective and scalability.

Therefore, some of the US tendering activities turn the planner's attention to the battery energy storage system. Xcelenergy conducted a milestone energy bidding at 2016 to make the bidding price of the wind power + energy storage project as low as 21 US dollars / MWH, the bidding price of solar + energy storage project is as low as $ 36 / MWH. Jasonburwen, Vice President of the US Department of Energy Society, said, "At that time, due to expensive cost of battery energy storage system, planners did not even include them in the model.

The resource plan model of about 80% of utility companies today is eye-catching battery energy storage systems, and some are purely selected according to their cost competitiveness. Jonathanadelman, vice president of strategic resources and business planning, said that the company has recently adopted Anchorsolutions' include software that can build a "capacity and energy arbitrage value" of various battery energy storage systems in various scenarios. mold.

ADELMAN pointed out that Xcelenergy is modeling the battery energy storage system for each hour of the battery energy storage system by adopting this new tool. The company has built a 4-hour battery energy storage system for this purpose of the 2019 long-term energy storage program in Minnesota to help meet capacity needs. APS's Albert said that the company has opened a SOLANA aggregated solar heat storage project operated in 2013, which has six hours of thermal storage capacity.

To this end, see the peak power demand storage. Can system value. This is the APS company decided to choose the solar + energy storage project instead of the natural gas power plant in the bidding.

Albert emphasized that "the energy storage system has now become a long-term planning of utility companies, but the resource plan of utility companies should not only pay attention to one case. Natural gas peak power plants and battery energy storage systems can meet peak power demand, but through storage and transfer of solar power generation to meet peak power requirements, battery energy storage systems can save more costs for customers. Battery energy storage systems bring more value in the wholesale market, so this is also part of our plan.

"The Brattle Group published in a seminar at the Massachusetts Institute at May 13 pointed out that the cost of the lithium-ion battery energy storage system is so fast, so that this is currently related to other energy storage technology. It is not possible to compete with it in supply reliability and grid service. Brattle's report claims that the price of battery energy storage systems fell below $ 400 / kWh in 2010, or less than $ 200 / kWh or less to 2040.

However, some utilities companies and planning department supervisors said that prices are not the only considerations for deploying battery energy storage systems, and another feature is the reliability of energy storage systems, but it is difficult to determine. AutumnProudlove, Advanced Manager, Northern Carolina Clean Energy Technology Center (NCCETC), said that there is almost no desire to determine the value of battery energy storage system in public utility resource planning. She said: "Some states have recently requested utility companies to consider deploying energy storage systems during the planning process.

Washington State may be more in-depth in research on mode of modeling per hour, and this will break down the value of the energy storage system. "Proudlove added, North Carolina Clean Energy Technology (NCCCETC) has not yet been determined, including its energy storage elastic value or energy storage system for various grid services available during planning process. The leader of the Brattle Company said that the value claims of the energy storage system depends on whether it can be fully compensated, and this is largely dependent on the resources and net load of the energy storage system.

The utility company began to realize that their planning model does not answer the energy storage deployment problem very well. HLEDIK pointed out that the planning model of these utility companies divided the load into several similar load time groups and established planning decisions based on these groups. This approach is meaningful when using the utility company to operate fossil fuel power generation facilities, while wind power generation and solar power facility supporting deployment of cost-effective battery energy storage systems.

HLEDIK said that many of Brattle's utility companies are stepping to adopting long-term planning tools to better show the interior of energy storage systems and renewable energy power generation facilities on power systems. Janicelin, the founder and CEO of Strategen, which adopts the Planning Tools Energy Advisory Agency, said that the utility company develops future resource portfolios is a complex process, which is planned to predict power generation, transmission and other power system requirements. She added that since the battery energy storage system is both a power generation facility is also a load, it is possible to supply a number of value streams, so its accuracy requires fine modeling for each hour of the year.

The current modeling software has left a lot of space for its technological innovation. Resource Planning Authorities In this webinar in the California Energy Association (CESA), the emergence of modeling tools contributes to many factors that should be considered when determining the correct energy storage capacity in the future resource combination. Advanced Adviser and Technical Manager RoderickGo said in a webinar: "One basic problem with planning is short-live energy storage and long storage to meet much capacity to meet load demand.

"GO pointed out that the incentive measures, mandatory requirements, and cost decline in utilities are driving the needs of battery energy storage systems. For a long time, the changes in regulations, changes in technology, and the development of the market will bring more energy storage deployment space for power systems. Innovative modeling software is a very violent category of competition, while the rise of renewable energy power generation is increasingly added to the concept of effective bearing capacity (ELCC).

Effective load capacity (ELCC) is the specific calculation of resource reliability. Scandable fossil fuel power plant is likely to have 100% effective bearing capacity (ELCC), because in theory, almost whenever power system reliability is threatened. Modeling declaration, the value of the battery energy storage system increases with the new increase of renewable energy power generation in the power system, but its value has decreased with the peak demand.

Typically, the energy storage system reduces peak load to 15% allows the battery energy storage system to obtain an effective load carrying capacity (ELCC), as usual can usually be used during peak requirements. He added that as peak load reduces 15% to 30%, the effective load capacity (ELCC) of the battery energy storage system will also decline, because it is likely to be used to gently power demand, no longer meet electricity reliability Sexual demand. Advisory ASTRAPE CHASEWINKLER ANTERNESTERN SME is expressed by the research of the effective bearing capacity (ELCC) described by RoderickGo by research on Southwestern Electricity Association and California Power System.

Los Angeles Hydropower Bureau (LADWP) Speaker Caroltucker said that the National Renewable Energy Laboratory (NREL) and Los Angeles Hydropower (LADWP) are developing other stakeholders say "best practice" to help California in 2045 Implementing the goal of using 100% renewable energy power. Danielsteinberg, Senior Researcher, National Renewable Energy Laboratory (NREL), said in this webinar, NREL's scalable integrated infrastructure plan is developing a best practice kit to process energy storage system deployment. Steinberg said that NREL's iterative approach is beginning to scale, to determine "what is constructed, where is it to build".

The next step is to perform every hour of operating cost modeling. By every day, once a hour, it will be used through capacity extended modeling to achieve the most cost-effective and reliable resource combination. The resource full plan is the next step in the process, which can meet the reliability standards of 10 years.

If necessary, the NREL process will iterate all three steps to achieve the most cost-effective resource sufficient goals. Finally, the specific trend model ensures that the grid facilities are protected. And if there is a threat to power reliability, this process will be restarted.

The spokesperson of the online workshop pointed out that in order to accurately determine the value of the battery energy storage system during these planning, many people are advocating the use of effective bearing capacity (ELCC), but effective bearing capacity (ELCC) in planning Controversial. Disputes on Effective Benefaction Capacity (ELCC) When utility companies and other companies have strive to determine the installed capacity of the storage system, the effective bearing capacity (ELCC) should determine the energy storage value used for resource planning targets, but some people think It is not the best tool for achieving this goal. Edwardrandolph, an EDWARDRANDOLPH, an energy department director of the California Public Utility (CPUC), has become part of the California Public Utility Committee (CPUC) Integrated Resource Planning (IRP).

He said, "The most recent payload capacity (ELCC) calculation statement, all resources reliability may add energy storage system, solar + energy storage, demand, and other procurement that can better meet peak demand energy. "GridWorks experts, former California Public Utilities (CPUC) Energy Consultant Matthewtisdale, its dispute lies in effective carrying capacity (ELCC) whether it supports the lowest cost and most reliable resources to meet the needs and goals of the state, this dispute is currently California Public Utilities (CPUC) Comprehensive Resource Planning (IRP) Process. TISDALE believes that effective bearing capacity (ELCC) is a complex calculation process, but it may ignore the value of certain resources compared to cost, including energy storage system value.

At a seminar held on December 6, 2018, participants expressed concern about the energy storage capacity value proposed by the New York independent system operator (NYISO) on December 6, 2018. Some stakeholders This method of effective carrying capacity (ELCC) is proposed for this purpose. According to New York Independent System Operators (NYISO) responds in May 2019, stakeholders want balance and reliability services pricing and investment signals from New York wholesale energy market.

Although the effective bearing capacity (ELCC) can be used, the New York independent system operator (NYISO) found that it may be too relying too much administrative order, or more complex calculations, which makes the utility company's plan is too blur. Burwen, US Energy Society, said Astrape has put forward similar views on the effective bearing capacity (ELCC) of the Southwestern United Anti-Care Company of US Power. The US Federal Energy Management Committee launched a procedure in October 2019 to study the effective load carrying capacity of PJM Internet companies (ELCC).

He said, "This concept is developing. Even the fineness of the modeling of the model is not fully captured to the value of the flexibility in the actual world battery energy storage system. "The National Renewable Energy Laboratory (NREL) presents an alternative approach to effective bearing capacity (ELCC) in June 2019.

The research report claims that "Effective Benefaction Capacity (ELCC) simulation may have to conduct a large number of calculations when considering a large number of scenes. More simple but equally accurate approximate values ​​can decompose the installed capacity of the battery energy storage system required to reduce the 'net peak demand'. "GridWorks's Tisdale said," Due to the many competitive benefits, and on the basis of future uncertainties, the industry people have different opinions on the effective bearing capacity (ELCC), which is not enough.

Odd, because modeling does not replace expert judgment. "Brattle's HLEDIK pointed out that complex and specific modeling can determine that the incremental incremental increments brought by more energy storage system is equal to the cost of new energy storage systems in the power system. This may require deploying more energy storage systems.

Hledgeik added, "technology, resource price and other power system drivers are rapid development. In order to understand some major changes in the future, resource planning should carefully handle some seemingly reasonable and often updated issues. The installed capacity of the battery energy storage system has added these challenges, but it is no longer a hypothesis, we are understanding how to use the energy storage system to make tight progress.


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