种提高电源外送型电网输电能力的方法

• Format: Patent
• Language: Chinese
• Published: 22.02.2019
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SYSTEMS FOR STORING ELECTRIC ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

种提高电源外送型电网输电能力的方法，本发明首先建立长距离高压架空输电线的分布参数下的无损模型，然后导出输电线路线路上的有功、无功与线路两端电压、相角之间的关系；再对模型进行改进，在输电线路的送端和受端加入等值电动势，推导出送受端系统等值电势与输电线路电压、送受端短路比的关系，得到系统传输的功率与送受端等值电动势、相角差、送受端短路比、输送距离的关系式；根据静态稳定储备系数的取值范围决定输电线路实际输送的极限功率；对线路进行容性补偿，依据补偿后改变的参数得到补偿后的输电功率的关系式。本发明具有提高交流长距离电能能力、能够确定某地区线路上投入固定串补装置的最优串补度的显著优点。 The invention discloses a method for increasing the power transmission of a power supply deliver type power grid. According to the invention, the method includes the following steps: firstly establishing an undamaged model with distribution parameters of a long-range high-voltage overhead power transmission line, then deducing the relationship between active and reactive on the power transmission line and the voltages and phase angles at two ends of the power transmission line; improving the model, adding an equivalent electromotive force to a transmitting end and a receiving end of the power transmission line, deducing the relationship between the equivalent electromotive force of a transmitting and receiving end and the v