Trans-regional power grid transaction settlement processing method based on deviation electric quantity responsibility judgment

Abstract

The invention discloses a trans-regional power grid transaction settlement processing method based on deviation electric quantity responsibility judgment. The method is established on a power grid deviation electric quantity responsibility confirmation model based on an area control error (ACE), and includes the following steps: a power grid transaction center obtains actual exchange electric quantity between areas according to time periods (days, hours) in each transaction period (month) through a power grid OMS system, and calculates a frequency deviation accumulation amount and deviation electric quantity in the time period and an ACE accumulation amount; and then a tie line deviation electric quantity responsibility judgment ''*'' area diagram is constructed using the accumulation amounts of two subitems of the ACE of each time period of the transaction period as coordinates, a deviation electric quantity responsible party is judged and the responsibility degree level is determined according to the positions of operating points according to time periods in the ''*'' area diagram, and then different punishment electricity prices are determined according to the deviation electric quantity responsibility party and responsibility degree, thereby realizing differential pricing and separated settlement of trans-regional power grid transaction contract electric quantity and deviation electric quantity.

Description

technical field [0001] The invention discloses a cross-area power grid transaction settlement processing method based on the determination of the responsibility of deviation electricity. The invention belongs to the technical field of electric power market transaction. Background technique [0002] In the transaction process of the electricity market, the contracted electricity is the electricity clearly stipulated in the electricity transaction contract, and the dispatching agency arranges the power generation and reception execution plan for the market players according to the contract. However, due to the particularity and complexity of power system operation, power grid security, unit operating conditions, automatic control equipment, and human factors will all affect the execution of the dispatch plan, so that the actual metered electricity at the gateway generally cannot be consistent with the contracted or planned electricity. The difference is the bias power. [00...

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Problems solved by technology

[0006] The above literature research is either based on rigorous theoretical calculations, such as power flow tracking algorithms, which can intuitively describe the physical flow direction of the actual grid power flow, so that the utilization share of each generator and each load to the line power flow can be accurately determined. Using the strict power flow method to calculate the transaction settlement electricity of each transaction party in the electricity market can ensure the accuracy and fairness of the calculation results, but the calculation process is complicated and the calculation amount is too large, and there are still problems in the application of large power grids. The actual operability of transaction electricity settlement is poor, and it is impossible to determine the responsible party for the deviation electricity

Although the relevant practical settlement methods consider different settlement methods for contract electricity and deviation electricity to different degrees, they have not put forward a clear criterion and method for determining the responsibility of deviation electricity, so it is impossible to differentiate pricing

At present, in my country's cross-regional power transactions, the deviation power is generally borne by a single transaction entity, and the deviation power price is settled according to the original contract price without distinction or through some weighted average pricing. Although this is simple and easy, it is obviously unfair and lacking. scientific basis

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