Role and Value of Pumped Storage Units in an Ancillary Services Market for Isolated Power Systems - Simulation in the Taiwan Power System

Wu, Chao; Lee, Wei-Jen; Cheng, Ching-Lung; Lan, Hong-Wei

doi:10.1109/icps.2007.4292102

Cited by 9 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The most effective approach for preventing a UFLS trigger is reducing the power gap during the arresting period. This can be achieved using the frequency response reserve such as a battery energy storage system (BESS) or demand response (DR) that can be procured from the ancillary service market [27][28]. However, FRR procurement is challenged by the different responses and time delays of various generating resources.…”

Section: Planning For Frr Capacitymentioning

confidence: 99%

A Supervised Learning Scheme for Evaluating Frequency Nadir and Fast Response Reserve in Ancillary Service Market

Chiu

Chang-Chien

2021

IEEE Access

View full text Add to dashboard Cite

Power system operators evaluate the frequency security of the system by predicting the frequency nadir, which is assumed to indicate the impact of a sudden loss of a generating resource. Recently, frequency nadir prediction has become more challenging because renewables have penetrated and significantly changed the generation portfolio within the system. Conventionally, the frequency nadir is determined using a frequency response model where the features-load damping, system inertia, and effective governor response-are assumed to be known. However, these key features are not easily obtained in a power system that continuously changes during daily operation. This study proposes a supervised learning scheme that traces these key features. It also proposes a new feature-the power gap rate-that better reflects the influence of the load on the system frequency than that of the load damping. Feature importance recognition and the construction of a frequency nadir model (FNM) are realized using the proposed supervised learning scheme. The proposed FNM achieved 54% higher accuracy than the conventional method. Finally, the FNM is implemented in a planning process that quantifies the capacity of the fast responsive reserve (FRR). In two renewable penetration cases, the proposed FRR procurement successfully secured the frequency nadir above the security criterion.

show abstract

Section: Planning For Frr Capacitymentioning

confidence: 99%

A Supervised Learning Scheme for Evaluating Frequency Nadir and Fast Response Reserve in Ancillary Service Market

Chiu

Chang-Chien

2021

IEEE Access

View full text Add to dashboard Cite

show abstract

“…EPB is of the lowest cost since it sheds no load. EDR 1 is cheaper than EDR 2 because it only slightly influences dispatching schedule of the pumped storage units rather than cut off industrial or domestic loads [22]. The threshold for STFS or Δ f T is set at −0.5 Hz.…”

Section: Simulation Studiesmentioning

confidence: 99%

Real‐time optimisation of short‐term frequency stability controls for a power system with renewables and multi‐infeed HVDCs

Wang

Xie

Xiang

et al. 2018

IET Renewable Power Generation

View full text Add to dashboard Cite

Short-term frequency stability (STFS) is becoming a great concern for a regional receiving-end power system such as the East China Power Grid (ECPG) mainly for two reasons: (i) the increasing percentage of power injected from multi-infeed (ultra-) high-voltage DCs (HVDCs) with the skyrocketed capacities; (ii) the replacement of traditional generation by the continuously growing inertia-less renewables. However, the existing emergency control is not adaptive enough to maintain STFS under varying operation conditions. In this study, a real-time optimised control is proposed to solve the issue more efficiently. It combines emergency power boosting (EPB) of HVDC and emergency demand response (EDR) in a coordinated way. The optimal control problem is formulated based on the online-updated models that reflect the current state of the system and the dynamic responses of multiple types of generators. By converting the non-linear constraint into a linear matrix inequality, the allocation of EPB and EDR can be optimised in a real-time and coordinated way. The performance of the proposed control and its advantages over the existing one are verified by simulation studies on the model of ECPG with low, normal and high penetrations of renewables.

show abstract

“…This is the case of Lu et al [7] that developed an algorithm to determine the optimal bidding strategy for day-ahead and ancillary services markets. The ancillary services market can complement the value of the PSH unit when it commits some capacity to improve the spinning reserve of the system [8], [9].…”

Section: Introductionmentioning

confidence: 99%

How market power affects the behavior of a pumped storage hydro unit in the day-ahead electricity market?

Teixeira

Sousa

Faias

2012

2012 9th International Conference on the European Energy Market

View full text Add to dashboard Cite

The integration of large amounts of wind energy in power systems raises important operation issues such as the balance between power demand and generation. The pumped storage hydro (PSH) units are seen as one solution for this issue, avoiding the need for wind power curtailments. However, the behavior of a PSH unit might differ considerably when it operates in a liberalized market with some degree of market power. In this regard, a new approach for the optimal daily scheduling of a PSH unit in the day-ahead electricity market was developed and presented in this paper, in which the market power is modeled by a residual inverse demand function with a variable elasticity. The results obtained show that increasing degrees of market power of the PSH unit correspond to decreasing levels of storage and, therefore, the capacity to integrate wind power is considerably reduced under these circumstances.Index Terms--Day-ahead electricity market, market power, price-maker, pumped storage hydro unit, wind integration.

show abstract

Role and Value of Pumped Storage Units in an Ancillary Services Market for Isolated Power Systems - Simulation in the Taiwan Power System

Cited by 9 publications

References 12 publications

A Supervised Learning Scheme for Evaluating Frequency Nadir and Fast Response Reserve in Ancillary Service Market

A Supervised Learning Scheme for Evaluating Frequency Nadir and Fast Response Reserve in Ancillary Service Market

Real‐time optimisation of short‐term frequency stability controls for a power system with renewables and multi‐infeed HVDCs

How market power affects the behavior of a pumped storage hydro unit in the day-ahead electricity market?

Contact Info

Product

Resources

About