Optimal operation modes of photovoltaic-battery energy storage system based power plants considering typical scenarios

Gao, Yajing; Xue, Feng; Yang, Wenhai; Yang, Qiang; Sun, Yueheng; Sun, Yifei; Liang, Haifeng; Li, Peng

doi:10.1186/s41601-017-0066-9

Cited by 24 publications

(11 citation statements)

References 20 publications

(17 reference statements)

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“…Neglecting higher than second order, Taylor series can be employed to linearize (14), and the following equations can be obtained.…”

Section: ) Control Of Esss In Ac and DC Subgridmentioning

confidence: 99%

“…Thus, the impact of ESS on power balance is not emphasized in this operation mode, due to power support of utility grid. On the contrary, in the islanded operation mode, ESS will play a significant role in power balance and voltage/frequency regulation [12]- [14]. Based on this situation, this paper mainly focuses on the control of AC/DC hybrid microgrid with multi-energy storage systems (MESSs) operating in the islanded mode.…”

Section: Introductionmentioning

confidence: 99%

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A Hierarchical Self-Regulation Control for Economic Operation of AC/DC Hybrid Microgrid With Hydrogen Energy Storage System

Yang

Zhao

et al. 2019

IEEE Access

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The introduction of hydrogen energy storage system (HESS) as a potential form of energy storage systems (ESSs) has a significant impact on original control and operation. This paper presents a hierarchical self-regulation control method, which can be divided into the supervisory layer and local layer control. The supervisory layer control decides the output power of ESSs, according to the operation cost function so that the system can reach economic optimum during the operation process. The local layer control adopts virtual inertia control with global power support to improve system stability. First, a HESS model composed of an electrolyzer, hydrogen storage tank, and the fuel cell is established. SOCH of hydrogen tank is defined to express produced and consumed hydrogen. Then, aiming at supervisory layer control, operation cost functions of battery energy storage system (BESS) and HESS under different operation modes are built. Virtual inertia of ac ESS and virtual capacitance of dc ESS are introduced for local layer control. Finally, the simulation results based on the RT-LAB platform of both 24-h operation case and step power change case verify the correctness of the proposed method. The comparison with only droop control method shows that the proposed method can achieve the lowest operation cost and improve system inertia. INDEX TERMS AC/DC microgrid, hydrogen energy storage system (HESS), hierarchical control.

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“…Neglecting higher than second order, Taylor series can be employed to linearize (14), and the following equations can be obtained.…”

Section: ) Control Of Esss In Ac and DC Subgridmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Hierarchical Self-Regulation Control for Economic Operation of AC/DC Hybrid Microgrid With Hydrogen Energy Storage System

Yang

Zhao

et al. 2019

IEEE Access

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“…The data of the load in bus 29 and the TOU price in a day is shown in Table 6: 18 Based on the TOU price and load profile, the operation scheme could be obtained. That is, the ESD would charge in times 2, 3, 4, 5, and 7, with a charge rate of 2 MW/h, and would discharge in times 11,12,18,19, and 20, with a discharge rate of 2 MW/h. When the ESD is integrated in bus 29, the load profile becomes more flat, due to the ability of peak shaving and valley filling of the ESD, which is shown in Figure 15.…”

Section: Enrichment In Complex Systemmentioning

confidence: 99%

“…Reference [18] discussed how individual investors made profits with ESDs through random frameworks in the day-ahead electricity market. In [19], the optimization model for maximal revenue of the photovoltaic-battery energy storage system in typical scenarios, considering power generation revenue, assessing rewards or penalties, and peak shaving and valley filling, revenue of the battery energy storage system (BESS) was established. In [20], a profit model of energy storage based on a strategy in which the ESD charged when prices were low, and otherwise the ESD discharged, was proposed.However, these studies mainly focused on the benefits mode and actual possible benefits of ESDs, but the economic impact of ESD operation on distribution networks were not considered.…”

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confidence: 99%

Cost–Benefit Analysis of Energy Storage in Distribution Networks

Hou

Kou

et al. 2019

Energies

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Due to the challenges posed to power systems because of the variability and uncertainty in clean energy, the integration of energy storage devices (ESD) has provided a rigorous approach to improve network stability in recent years. Moreover, with the rapid development of the electricity market, an ESD operation strategy, which can maximize the benefits of ESD owners as well as the contribution to the electricity network stability, plays an important role in the marketization of ESDs. Although the benefits for ESD owners are discussed in many studies, the economic impact of ESD operation on distribution networks has not been commendably taken into account. Therefore, a cost-benefit analysis method of ESD which quantifies the economic impact of ESD operation on distribution networks is proposed in this paper. Considering the time-of-use (TOU) price and load demand, the arbitrage of ESD is realized through a strategy with low price charging and high price discharging. Then, the auxiliary service of ESD is realized by its capability of peak shaving and valley filling. In this paper, the long-run incremental cost (LRIC) method is adopted to calculate the network price based on the congestion cost. Based on the dynamic cost-benefit analysis method, the cost-benefit marginal analysis model in the ESD life cycle is proposed through the calculation of the present value of benefit. Subsequently, the optimal ESD capacity and charge/discharge rate is obtained to get the shortest payback period by analyzing different operation parameters. Finally, a case study is undertaken, where the ESD operation model mentioned above is simulated on a two-bus system and a 33-bus system, and the ESD cost-benefit analysis and the analysis of corresponding influence factors are carried out adequately.Energies 2019, 12, 3363 2 of 23 significantly. Hence, it is important to put forward an appropriate cost-benefit method of ESDs in distribution networks.Moreover, the electricity market reform has been carried out gradually around the world, and the pilot work of an incremental distribution network is on its way [2]. The incremental distribution network encourages multiple subjects, such as grid companies or individual users, to invest jointly, thus, there is no longer a single form of monopoly for system planning and construction. The permeability of clean energy, such as solar energy, wind energy, tidal energy, nuclear energy, and geothermal energy is increasing rapidly, and the number of ESD users in local power networks is also increasing year by year. Under the background described above, the power supply, network, and load construction are presented as a new mode of investment opening. Therefore, it is more practical to discuss the investment benefits of ESDs in the network under the mode.The motivation and incitement of this paper were discussed above.To keep abreast of current information and development in the field of ESDs, the literature reviews are introduced as follows.There are several relevant studies on the charge and discharge ra...

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“…The output of PV has strong randomness, volatility and intermittent. The large-scale PV's integration into grid would bring serious challenges for the safety and stability of the power system [4]. Hydropower has a wide range of output and strong adjustment capability, which can However, the above studies of sizing of the system were insufficient on economics, complementarity and uncertain factors.…”

Section: Introductionmentioning

confidence: 99%

Optimal Sizing of Hydro-PV-Pumped Storage Integrated Generation System Considering Uncertainty of PV, Load and Price

Liu

Xiang

et al. 2019

Energies

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Effectively using complementary property of various renewable energy sources by an integrated generation system is a concerned study. Considering the uncertainty of PV, spot price and load, the sizing of integrated generation system with combined market operation is a difficult problem. Based on the above uncertain factors, the sizing method of hydro-PV-pumped storage integrated generation system is proposed in this paper. The output characteristic model is established by utilizing the wide range of hydropower output and flexible schedulability of pumped storage. Then, the volatility ratio of the power exchange curve and load tracking coefficient are the evaluation index of the complementary effect, which ensures the stable and smooth output curve. Further, the uncertainty models of PV, spot price and load are established, considering that, the operation of the power generation system is optimized in the day-ahead market, and the predictive deviation of PV and load is balanced in a real-time market. Based on the above factors, the sizing model of the hydro-PV-pumped storage integrated energy system was proposed based on economics and complementary index. Finally, a case study was undertaken, the sensitivity analysis of the economy and complementarity indices was carried out, as the complementarity index is improved, the economy would be down. Further, the optimal sizing of hydro-PV-pumped storage integrated generation system was obtained, hydropower was a total of 165 MW, PV was 100 MW and pumped storage was 50 MW, that could ensure the economy while meeting the complementary index, the effectiveness of the model proposed was verified.Energies 2019, 12, 3001 2 of 23 compensate for PVs better, the pumped storage power station can suppress the fluctuation of output in a shorter time [5], which would improve the grid's ability to PV consumption and the schedulability of the total output of the system. For instance, in China the Longyangxia hydro-PV complementary power station has achieved better coordination operation and complementarity, which has greatly weakened the impact of PV's integration into the power grid [6]. The output model of hydropower is a relatively complex nonlinear function. The upstream and downstream water levels and the net water heads are variables changing over time, the output of hydropower is restricted by the available water resources, has strong seasonal characteristics, therefore, the compensation effect of hydropower on PV is obviously different in different scenarios [7]. Research on the sizing of integrated generation system is particularly important based on multiple typical scenarios.In the electricity market, the uncertain factors would bring more unknown challenges for the sizing of integrated generation system [8], cost from electricity purchase and profit from electricity sales profit are affected by fluctuating spot price, which would bring higher risks for the economy of the system. The higher the transacted electricity of the complementary system in the spot market is, the gr...

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Optimal operation modes of photovoltaic-battery energy storage system based power plants considering typical scenarios

Cited by 24 publications

References 20 publications

A Hierarchical Self-Regulation Control for Economic Operation of AC/DC Hybrid Microgrid With Hydrogen Energy Storage System

A Hierarchical Self-Regulation Control for Economic Operation of AC/DC Hybrid Microgrid With Hydrogen Energy Storage System

Cost–Benefit Analysis of Energy Storage in Distribution Networks

Optimal Sizing of Hydro-PV-Pumped Storage Integrated Generation System Considering Uncertainty of PV, Load and Price

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